Ask HN: Who is hiring? (September 2025)

Justworks | Hybrid (US: New York City, Canada: Toronto) | Full-time | Multiple roles | https://justworks.com/careers

Justworks is helping businesses get off the ground by enabling them to focus on running their business. We solve HR issues. We’re data-driven and never stop iterating. And, we are hiring across the board! If you’d like to work in a supportive and entrepreneurial environment, are interested in building something meaningful, and having fun while doing it, we’d love to hear from you!

- Engineering Manager: https://grnh.se/yzes4b8l1us

- Senior Software Engineer: https://grnh.se/lluz9tup1us

- Software Engineer: https://grnh.se/6q95fndp1us

- Engineering Manager, Infrastructure: https://grnh.se/qa3m2hxt1us

- Senior SRE: https://grnh.se/b6es9bfa1us

- Infrastructure Engineer: https://grnh.se/qadh1e1v1us

- Group Product Manager: https://grnh.se/3jlr8o3c1us

- Product Manager: https://grnh.se/1nkz4qef1us

Class Central | Senior Full Stack Engineer | Remote | https://www.classcentral.com

I'm looking for a senior engineer to take ownership (from me) of Class Central's codebase and infrastructure.

We help tens of millions of learners find the best courses on any subject. Small team (6 people), profitable, independent, and around for 13+ years. No VC drama, just sustainable growth.

Stack: PHP 8+, Symfony 7+, MySQL, Elasticsearch, Google Cloud. We keep it simple and productive.

Own the full stack, help shape our product, and build pragmatic solutions for our current scale. I am looking for product-minded engineers who are focused on user experience and driven to understand the business.

I'm building a new cross-functional product team from scratch (engineering, product, design). Looking for a foundational engineer who can mentor, collaborate, and help define how we work together.

Remote-first, async, very few meetings. Real autonomy, real impact. Fair warning: being fully remote means no annual Halloween Heists.

While I don't have a formal job post up yet, if you're at that point where this feels like the right next step, I'd be happy to hear from you: [email protected]

RevEng.AI | London, UK | Full-Time | ONSITE+PART REMOTE | https://reveng.ai

RevEng.AI is building foundational AI models to identify malicious threats and security vulnerabilities inside software. We're a seed stage startup having raised $4.25m from top tier VCs across the US and Europe. You’ll play a key role in advancing our platform pushing the boundaries of AI-driven program analysis.

We're looking to hire security engineers and security researchers with experience in program analysis, reverse engineering, vulnerability research, machine learning, and malware analysis.

* 5+ years of experience

* Masters or PhD in a relevant area for the security researcher role

* Hybrid working environment but ideally commutable to London, UK

* Solid understanding of software engineering design

* Ability to thrive in a fast-paced start-up environment

To apply or learn more, email contact[at]reveng.ai with "hn" in the subject line.

CredCore | Engineering | Full-time | US/India | www.credcore.com

CredCore helps companies analyze Credit Agreements using AI. We are looking to hire an Engineering Lead with 10+ years of experience. You should be familiar with design patterns and software architecture, infra/kubernetes, and TypeScript/Python. If you’re interested, please reach out to us at [email protected].

A cover letter is not necessary. But please share your resume and links to your GitHub/GitLab/StackOverflow/other profile, or blog/papers, or other portfolio we can review before setting up the interviews.

*Maiven | Full-Stack Engineer & Energy Modeling Engineer | Remote (US) | Full-Time*

Maiven is the software platform automating home decarbonization. We’re a small, mission-driven team punching way above our weight: we have large utility customers, contracts in multiple states, and a growing pipeline of programs launching later this year. We’re venture backed and moving fast.

We’re hiring two engineers:

- *Full-Stack Engineer* – NestJS, React, Tailwind, TypeScript, Python, Postgres, AWS, Lambdas. Someone who cares deeply about UX and moving fast while delighting the user. - *Energy Modeling Engineer* – Python, pandas, AWS, modeling frameworks (ResStock, EnergyPlus, etc.). Experience with energy programs or building science is a huge plus.

Looking for builders who want real ownership, thrive in early-stage startups, and move with urgency and care.

More: https://www.askmaiven.com

To apply: email [email protected] with a resume and your links.

PlantingSpace | Full-time | Remote (EU time zone) + Quarterly Meet-ups | https://planting.space

We’re building an AI system for analysts and scientists, based on a fundamentally new approach to reasoning and knowledge representation. Our approach differs from LLMs in that we compose algorithms symbolically to represent complex knowledge, and perform probabilistic computations. This enables the AI-driven application of statistical models to different problems, while providing the user with a verifiable reasoning path, and an assessment of the uncertainty in each answer. We are developing applications for analysis and research in domains such as Finance, Strategy Consulting, Engineering, Material Sciences, and more.

Ready to push the frontier of automated structured reasoning? Check out our current openings for:

* Program Synthesis Engineer

* Product Software Engineer

* Senior Product Manager

See detailed role info, and apply: https://planting.space/joinus/

Questions welcome! Get in touch: [email protected]

Freetrade | London (ONSITE) | Full-time | https://freetrade.io | £75k-£140k

Freetrade is a commission-free investing app used by over 1 million people in the UK. Our team is expanding, and we’re seeking software engineers to evolve and scale our core investing platform. In this role, you will be instrumental in building and maintaining reliable and trustworthy systems for trade execution, clearing and settlement, asset servicing, and internal operational tools. You will also play a key role in shaping our technical direction and mentoring other engineers as our team grows.

Tech we use: TypeScript, Node.js, Postgres, and GCP

Note: We are three days in the office, located just around the corner from Old Street. We don’t sponsor visas at the moment.

We are hiring across the board in engineering, data, people, marketing, risk & compliance and finance. See all of our opportunities here:

https://freetrade.io/careers

FunnelStory | Principal Architect (Go) | REMOTE (India) | Bengaluru | Full-Time | 55-85 LPA | https://funnelstory.ai

I'm Preetam, co-founder and chief architect of FunnelStory. We're looking for a back-end engineer with a strong Go background to join our team.

FunnelStory is an AI-first customer superintelligence platform. We're a small (<20 people), fast-growing, VC-backed, early-stage startup, and we're gaining exciting traction with enterprise customers. We're looking for an architect/engineer for a team that's building next-generation AI platforms using Go.

This is a great fit if you have:

* Deep expertise in Go.

* A strong architectural background, with experience designing and scaling complex systems.

* Expertise with relational databases (PostgreSQL) and SQL

* Excitement about taking a high-impact, independent role in an early-stage environment, helping to mentor and uplift the team.

Who we're looking for:

* 8+ years experience in Go, SQL, AWS

* Bias to action, ability to execute independently

* Strong architectural and problem-solving skills

* Ability to communicate complex ideas simply

More details + apply: https://wellfound.com/l/2Bn5eQ

Interested? Email me at preetam @ funnelstory.ai with "HN" in the subject.

Base Power | Onsite | Austin | Full-time | https://www.basepowercompany.com/careers At Base we're rebuilding the nation's power grid. We build and manufacture power systems, deploy them across the grid, and build the algs, ingestion and commanding platforms that operate the fleet in response to real-time grid conditions. Our team is made up of engineers from top infrastructure and energy companies (Apple, Anduril, Starlink, etc) and we have several years of runway from top firms (a16z, Valor, Thrive, Addition). We are looking for: - platform engineers - firmware & controls engineers - embedded software engineers

Sampling of exciting upcoming problems include: - Home load prediction algorithms - Resilient factory execution software platform - Automated hardware-in-the-loop (HIL) test system

OpenRent | London, UK | Full-Time | ONSITE+PART REMOTE | https://www.openrent.co.uk

What sucked the last time you rented a house or flat? Come and fix it.

OpenRent is a force for good in an industry tarnished by rip-off agencies. Enabled by an unrelenting focus on technology, we now let more properties than any agency in the UK. In the last 12m we let over £50 billion worth of property, to over 7 million registered users, without ever charging any admin fees.

You'll be working on solving every aspect of the rental journey, from models to predict the right price of a property, to building the future of property management, all to help tenants find their dream home, and landlords their ideal tenant.

We're VC backed, profitable, and have plenty of ambition to maintain our fast growth in this absolutely massive market.

Roles currently available:

- Senior UX/UI Developer | Equity | 100k+ (based on experience) + quarterly bonus

All roles visible here: https://www.openrent.co.uk/jobs

*BLACKLANE IS HIRING!* (Berlin / Barcelona / London – HYBRID) https://www.blacklane.com/en/career/ped/

We are Blacklane, a global, premium chauffeur service company, operating in 50+ countries.

As part of our engineering teams, you will help develop the services that power the Blacklane, work on improving our back-office system, or solve problems around our products which allow business partners to integrate with the Blacklane platform.

We are looking for:

# Senior Software Engineer – Backend → Apply: https://grnh.se/3z4sljwi2us

# Software Engineer – Backend → Apply: https://grnh.se/lrj4si102us

Our stack includes Ruby, Go, TypeScript, and Java services (DDD) deployed on Kubernetes, communicating via SQS and Kafka. We use Postgres, MySQL, Elasticsearch, Redis, and DynamoDB, with AWS and Terraform for infrastructure.

Nova Credit | Remote (US, Canada)

We're building a unified platform for credit and financial data to power financial inclusion globally. Our mission is to unlock economic opportunities for consumers historically excluded from traditional credit systems by transforming diverse data into actionable risk insights. We are YC company backed by investors from Canapi Ventures, Kleiner Perkins, General Catalyst, and Index Ventures

-> Hiring software engineers from Mid-Level to Staff

-> Tech stack: Node.js, React, TypeScript, Python, PostgreSQL, AWS

You'll work on enterprise-grade APIs, data integrations, advanced analytics, and seamless user experiences. We're looking for engineers who thrive in fast-paced environments and want to make a meaningful impact on financial inclusion.

Apply at https://jobs.lever.co/neednova/ and mention HN.

Friendly Captcha | Data Engineer - Bot Protection | REMOTE within EU | PART-TIME or FULL-TIME | Office in Munich, Germany | https://friendlycaptcha.com

At Friendly Captcha we do one thing and we do it well: we protect websites from malicious actors and bots.

We provide privacy-friendly and accessible anti-bot solutions that don’t annoy users with tasks like clicking fire hydrants. We make the internet a bit better every day by winning over customers currently using Google reCAPTCHA.

We’re a growing, profitable, fully bootstrapped company. Our revenue mostly comes from medium to large European enterprise and governments.

We’re looking for an engineer whose focus will be on using data to improve our bot detection and protection. Telling apart bots from genuine users is vital to our product.

If possible, we prefer to keep things simple (perhaps boring is the right word even?) - choosing an if/else rule over a neural network. Good knowledge of the web is always useful in this company. At our scale we are looking for generalists more than specialists. The role is more about enabling for easy experimentation, data exploration and being creative in anti-bot approaches, than building the perfect ETL pipeline.

Our engineering team is fully remote across Europe, we meet up in person a few times per year. You can work either 4 or 5 days per week, fully remote or (partially) from our Munich office. Please note that we ONLY consider candidates located within the EU/UK/EEA/Switzerland.

Stack: Golang | Typescript | Clickhouse | Postgres | Redis | Python data science stack

Form with more information: https://friendlycaptcha.jobs.personio.com/job/2207852

April | https://www.tryapril.com | San Francisco /Gurgaon, India | ONSITE | Full-time

  Roles:
  1. Head of Growth (SF)
  2. Senior Software Engineer (Gurgaon, India)

Head of Growth - Own the 0→100K user journey. Build content-led growth across LinkedIn/X/TikTok, run viral B2C experiments, and craft our brand voice. We need a proven track record of growing consumer products, content creation chops, and unreasonable excitement about retention curves. Extremely competitive salary + equity + user milestone bonuses.

Senior Software Engineer - Build the core backend for our AI assistant. 2-6 years of experience, TypeScript/Python, with consumer product background preferred. Work directly with founders on architecture decisions. Must work from the office. Competitive salary + early equity + quarterly performance hikes.

If you're interested, send your profile to [email protected]

Elyos (https://elyos.ai) | London, UK | ONSITE | YC S23

Company: We're the UK's fastest growing AI voice company (~30% MoM) - very deeply focused on the trades industry right now (think your friendly neighbourhood plumbing company).

We're a small but experienced team hiring 3 more to join:

- Founding Engineer - Founding SDR - Founding Operations Lead (customer success)

Tech: GKE, python, postgres, telephony/media streaming, realtime LLMs, contextual eou detection, the occasional REST API.

https://careers.elyos.ai/ or message me - matt (at) elyos.ai

Mention bananas for extra kudos.

PostHog | Full-Time | Product engineers, developer who loves writing/marketing, Technical AEs | REMOTE (all remote) | Hiring GMT-8 to GMT+1

PostHog helps engineers build better products by combining product analytics, feature flags, session replay, a data warehouse, CDP and many more.

* we have a public handbook (posthog.com/handbook) if you want to learn how we work, pay and more in complete detail.

* we are growing through more autonomy and transparency not through process.

* we have a ton of scale and a bunch of super interesting technical problems to solve

* we're building 20 more products over the next couple of years, so you could end up building one of those

* we need: product engineers, developer who loves writing and a developer who can do marketing, sales ops backend engineer, clickhouse engineer, technical account executives and technical customer success managers.

posthog.com/careers

BCC | Platform Systems Engineers | Bethesda MD | ONSITE or REMOTE, VISA | Competitive compensation! | https://www.ncbi.nlm.nih.gov

Black Canyon Consulting (BCC) is hiring Platform Systems Engineers of all levels to join our team at the National Center for Biotechnology Information (NCBI). Our team is dedicated to building cutting-edge tools and systems. Our mission is to empower developers across NCBI to build, deploy, and manage software, data, and web services that make a real difference in the lives of millions of Americans.

Your contributions will play a crucial role in modernizing government technology infrastructure, fostering innovation, and ultimately making a tangible impact on communities across the country and globally. This is your chance to be part of a mission-driven team that’s shaping the future of digital government.

Tech: Linux, k8s, Service Mesh, Kafka, GitLab, ArgoCD, Elastic APM, Python, C++

DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/... Sr DevEx Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

DataOps Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/... Sr DataOps Eng: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

Plaform Eng Manager: https://job-boards.greenhouse.io/blackcanyonconsulting/jobs/...

Zetier | Multiple US locations (VA, PA, FL, TX, CA, NY) | ONSITE | Full-Time

Zetier develops real-world tools and capabilities to secure our nation in the short- and long-term. If you’re excited to delve deep into low-level systems, exploit dev, and more alongside a group of passionate hackers, then we’d love to hear from you.

Open-sourcing our work as much as possible is integral to Zetier and what we stand for. As folks who learned to hack on platforms like Linux, we aim to give back to the OSS community. Not only do we encourage our engineers to contribute, but we go a step further, adding monetary incentives to do so.

We’re looking to find the right people for a range of roles, including:

+ Vulnerability Researcher

+ Android Security Engineer

+ CNO Embedded Engineer

+ CNO Software Engineer

+ IT Security Engineer

+ Senior Technical Lead

+ Business Developer

All open positions: https://zetier.breezy.hr/

Our approach and benefits: https://zetier.com/careers/

Different skill set? Drop us a line at [email protected]

Citymapper by Via | London, UK | Onsite or Hybrid (London, UK and New York, USA) | VISA

We are building the ultimate technology for mobility in cities. We are hiring

- Engineering Manager (London): https://job-boards.greenhouse.io/via/jobs/8001882002 - Director of Engineering (London): https://job-boards.greenhouse.io/via/jobs/8074378002

More roles at https://job-boards.greenhouse.io/via

Backend tech stack includes: AWS, Python, some C++, some Rust, EKS, Terraform.

Rover | Barcelona, Spain & Seattle, USA | Software Engineers (Multiple Roles) | Full-time

Rover is the world’s largest online marketplace for pet care. We connect millions of pet parents with trusted sitters and walkers, and we’re building a global platform that combines technology, community, and love for animals. With offices in Seattle, Barcelona, and beyond, we’re scaling an engineering culture focused on high-quality code, data-driven product decisions, and customer empathy. Open Roles: Lead/Senior Software Engineer, Acceleration (Barcelona)

Lead/Senior Software Engineer, Client Platform (Barcelona)

Lead/Senior Software Engineer, Sitter Experience (Barcelona)

Software Engineer II, Orders (Seattle)

Apply: https://www.rover.com/careers/engineering

Kredit | .NET Engineer Roles | Remote (US) | Full-time Kredit (trykredit.com) is on a mission to resolve debt better. We provide tools to regular people to help them get the out of financial hardship, as well as provide tools for businesses to manage their processes. We are small (6 person dev team) and growing. Our stack: .NET Core, C#, PostgreSQL, Mediatr, CQRS, Events, Angular, GCP, Kubernetes, Terraform and much more.

We are a Event/CQRS stack and are looking for Engineers that fit that experience in this area.

If this sounds interesting to you, please reach out to [email protected]

Come build the data platform of tomorrow!

Company: Galaxy - The Cursor for SQL | NYC (IRL) | Full-time | Roles: Founding AI Engineer, Founding Front-end Engineer | Founding Full-Stack Developer

https://www.getgalaxy.io

We’re building Galaxy, a next-generation SQL workspace that serves as the foundation for the data platform of tomorrow. Today it’s a lightning-fast, elegant query client — soon expanding into orchestration, reporting, and proactive intelligence so every team (not just engineering) can trust and act on data. We’re hiring early engineers in NYC to help shape this future.

Email us at [email protected] or hit us on Linkedin:

https://www.linkedin.com/in/garrettawolfe https://www.linkedin.com/in/mitchbregs https://www.linkedin.com/in/leonkozlowski

Upway | Paris (Hybrid) | CTO & Software & Data Engineers | Full-time

Upway is the leading marketplace for refurbished e-bikes across Europe and the United States. In the last 3 years, we went from 0 to $200M GMV with a small senior team of 5 engineers and have been growing the tech team since the beginning of year.

We are looking for business driven problem solvers that will help us scale to $1B+ GMV in the coming years.

Stack: TypeScript | NestJS | React | Shopify | PostgresSQL | GCP

Offers: https://careers.upway.shop/

Reach out directly: https://www.linkedin.com/in/augustin-l-53912b144/

RentSpree | $185k-265k | Hybrid 2x/week | Seattle | Full-Stack / Frontend | Full-time

RentSpree is a series B startup simplifying every step of the rental process—from applications and tenant screening to payments and lease management. Our mission is to create a seamless, transparent experience that saves time, boosts earnings, and builds trust between agents, landlords, and renters.

I'm the hiring manager for most of these roles. Come help us build greenfield products for agents and for our embedded finance platform for rental property owners.

Staff Software Engineer, $200k-220k base, https://ats.rippling.com/rentspree/jobs/4ae81c52-a5f0-4096-8...

Senior Software Engineer (Frontend/full-stack), $185k-205k base https://ats.rippling.com/rentspree/jobs/1051b7fc-6e82-4d8b-b...

Senior Engineering Manager, 230k-265k base, https://ats.rippling.com/rentspree/jobs/970fea74-c6b5-485a-9...

We're in downtown Seattle and are typically in the office twice a week, and still flexible on top of that. We typically use node, TypeScript, React, Mongo, and Kotlin.

Neuralwatt | https://neuralwatt.com | REMOTE (US – Seattle/Denver/Boulder metros only) | Full-time | $180k–$220k DOE Energy is the #1 constraint in new datacenter buildouts. Neuralwatt is reshaping AI compute around energy efficiency to maximize revenue per kilowatt. We’re a VC-backed, early-stage startup building optimization tools for AI, HPC, and datacenter workloads.

We're hiring 2 experienced founding engineers to help architect our core systems and work directly with customers.

What you'll do:

Technically: Architect critical datacenter infrastructure - Write Rust and Python - Measure real-world energy impact - Design state-of-the-art AI-led optimizations

Non-technically: Help build the business and win customers - Present at conferences - Develop marketing and company materials

Requirements:

- 5–10+ years of software development experience

- Thrive in ambiguous, outcome-driven environments

- Experience working closely with customers

- Clear communication and strong leadership

- Familiarity with LLM/AI infrastructure

Location: Remote-first, but we meet regularly in Seattle/Denver metro areas.

To apply: Email: [email protected] Subject: HN Hiring Include: - Resume - GitHub profile - A short note on why you're interested.

Please note: At this time, we are unable to offer visa sponsorship.

ScribbleVet (https://scribblevet.com) | Full-stack, former technical founders | Full-time | Remote (must be able to work US timezones)

ScribbleVet is an AI-powered scribe for veterinarians. We save veterinarians two hours every day, reduce veterinary burnout and help animals get better care.

* We're generating real ($XM/yr) revenue

* Our users love the product

* We're fully remote but not asynchronous, so we have a lot of autonomy but it's easy to collaborate with someone when needed.

We're looking for:

* Senior engineers (former founders or early startup experience strongly preferred) who can work across the stack.

* Engineers with a product mindset. Customer-centricity or design skills are a plus.

Our tech stack: Postgres, Elixir (+ Ash framework), React Native/Expo, React/Nextjs

We’ve found that the engineers who are happy and successful at Scribble really enjoy technology (learning new frameworks, experimenting with cutting-edge platforms) and are very product-oriented.

If you're interested in building AI-driven features that help vets and the animals they care for, check us out here: https://excessive-grey-9af.notion.site/Senior-Full-Stack-Fro...

Proton | AI Engineer | Geneva, Paris, London, Barcelona, Prague, Taipei, EU Remote | Full time

We recently launched Lumo, a privacy-friendly ChatGPT alternative, by the makers of Proton Mail & Proton VPN.

We are looking for curious and talented people to help us grow Lumo with any of these skills: ML engineering, LLM inference, GPU infra & devops, Frontend (Typescript, React), Backend (Rust, PHP). Looking for senior-level or fast-growing juniors.

I'm one of Lumo's core devs, write to me directly at marc dot dupont, domain proton ch, with "HN" in the subject.

https://lumo.proton.me

Roundtable | https://roundtable.ai | On-site San Francisco, CA | Full-time

Roundtable is a research and deployment company building the proof-of-human layer in digital identity. Roundtable seeks to research and build real-world Turing Tests, and to productize these developments in bot detection, fraud prevention, and continuous authentication.

We're hiring a Member of Technical Staff. This is not a typical “Founding Engineer” position. In particular, this role will involve more research than similar positions. You should be prepared to spend around half of your time on research and half on engineering.

The ideal candidate has experience in both. However, we don’t strictly require research experience as long as you have a strong quantitative background and an eagerness to learn. We do require proficiency in both web development (Javascript, Node.js) and Python.

If you're interested shoot an email to [email protected] with your resume and a short blurb on why you're interested (note: we are unable to offer visa sponsorship at this time).

Rayni (https://www.rayni.ai) | Chicago - Hybrid or Remote | Full-time | Founding Full Stack Engineer

Mission: We accelerate scientific discovery. We are starting with helping scientists operate their instruments (like Mass Spectrometers) faster with our Gen AI-powered platform.

Impact: We help scientists develop new drugs faster, analyze diseased blood samples faster, study brain cancer faster, etc.

Funding (> $1.5M): Funded by tier-1 VCs, including winning the biggest academic accelerator program on the planet - New Venture Challenge at the University of Chicago. Past winners include Venmo and Grubhub, among others, over the last 25+ years.

Who are we hiring: 3+ YOE in full-stack engineering with a frontend focus (80%) and backend (20%).

You will: - Make fundamental decisions about the frontend stack and product vision - Work with scientists to convert their needs into features. - Long term: Help build the product engineering team, lead and mentor new engineers - Long term: Scale the product to millions of users

Complete job post: https://rayni.notion.site/Founding-Full-Stack-Engineer-2412a... More about the company, culture, and benefits: https://rayni.notion.site/Rayni-Careers-2312a8a0f8fe803ab5bb... Founding Story: https://polsky.uchicago.edu/2025/07/02/how-rayni-turned-scie...

Terrace Networks | Security Data Systems Engineer | REMOTE (US) | https://www.terracenetworks.com

We’re hiring engineers to build the next generation of large-scale network threat intelligence. Our distributed vantage point is one of the world’s most diverse, and we’re using AI to make sense of global attack data in real time.

I’m Eric, co-founder and CEO. Our founding team includes researchers with decades of security experience and multiple successful startup exits.

We’re looking for full-time engineers who thrive at the intersection of systems, security, and machine learning. Ideal candidates bring a strong background in systems engineering, familiarity with modern ML for text/log analysis, and interest in automated response systems (e.g. LLM-based agents for classification, triage, response). Proven success working remotely is a plus.

We've recently closed our seed round; pay+equity will be based on experience and fit.

*Tech:* Go, Linux, TCP/IP internals, Terraform, DynamoDB, LLMs (Claude, etc.)

Apply here → https://www.terracenetworks.com/careers

9 Mothers Defense | Robotics Eng. & Computer Vision / Data Scientist | Hybrid (Austin TX) | Full-time

Building AI-driven turrets that stop hostile drones. We need sharp, hands-on engineers:

Embedded Robotics: Python on Jetson, CAN (+ EtherCAN / EtherCAT) drive buses, high-speed cameras, real-time PID/servo control, ROS, TensorRT

Computer Vision / ML: detection + tracking, transformer-based visual models, TensorRT tuning on Jetson

US persons only (e.g. green-card, citizens). Shoot your résumé / GitHub and a quick note on why you're good fit to [email protected]

Talk Machine | Founding Engineers | Remote (or London, Dubai, San Francisco) | https://talkmachine.com/jobs

Hello. I’m the founder of Talk Machine, previously founded Citymapper.

We’re working on building a consumer voice product / platform using AI, driven by the mission to improve human communication.

Our application process is unique. Just go to https://talkmachine.com/jobs and send us a voice note and we can begin talking, just like we met in person.

We have 2 specific posts, https://talkmachine.com/jobs/engineer for full stack founding engineers and https://talkmachine.com/jobs/mobile for iOS/Android, but glad to hear from anyone that loves the product/category.

We’re seed funded and can pay competitively + quality stock options (EMI in UK).

You like: talking, consumer, voice, AI, small fast teams, building great products, chasing product market fit

You can also reach out to me at https://talkmachine.com/az. :)

Clio | Remote Canada if outside of Toronto, Calgary, or Burnaby. Hybrid 2 days/week if local | Full-time and permanent with benefits from day one, paid by us, CAD salary bands posted on job descriptions

Clio is the market leader in legaltech products and we recently raised a Series F round of 1.4B CAD to a valuation of 4B CAD, marking the largest Canadian tech funding in history: https://betakit.com/clio-tops-4-billion-cad-valuation-with-l...

We also intend to acquire AI legal research tech company vLex (Vincent AI) to build a data moat: https://betakit.com/clio-to-acquire-american-legaltech-vlex-...

Some stats: 300MM+ ARR with 90% retention and 30% growth YoY / no debts / fortunate to have never done any layoffs. 1500+ staff before acquiring vLex, 450+ engineers, 55 eng teams.

Security - currently ~20 engineers in 4 teams (offensive sec, defensive sec, infra sec, compliance) + standing up 1 net new team soon (product sec) --> Intermediate/Senior Infrastructure Security Engineers - infra is cloud-first on AWS with Kubernetes. 130K-137K CAD base salary for Intermediate, 165K-172K CAD base salary + equity for Senior.

Machine Learning - currently ~30 engineers in 4 teams (MLE, MLOps, AI product dev x2) + still evolving especially after this vLex acquisition

--> Senior Machine Learning Engineer - NLP, GenAI, fundamentals in statistical modelling and experimentation. Open to both Canada and US. 175K-182K CAD base salary + equity for Canada, ~200K USD base salary + equity for US.

--> Senior MLOps Engineer - Python/Ruby, AWS, Kubernetes and Terraform. 175K-182K CAD base salary + equity.

Others

--> Senior + Staff Database Engineers - 2 separate roles, MySQL at massive scale. 165K-172K CAD base salary + equity for Senior and 200K-206K CAD + equity for Staff.

--> Senior Data Engineer - leans data platform and infra at scale rather than analytics. Billions of documents/PBs of unstructured text data. 165K-172K CAD base salary + equity.

--> Intermediate Platform Engineers - moving to PaaS from IaaS, Azure infra with Kubernetes and Terraform, programming experience preferred. EST-AST regions only. Remote Canada available. 130K CAD base salary.

--> Software Development Managers - 60% performance management, 20% project planning (with dedicated PMs and Designers), 20% hands-on in the code building features with the team. Code is RoR but language agnostic in hiring process. Intentionally small teams to allow for managers to also code. 205K-215K CAD base salary + equity.

Message [email protected] and/or apply directly: https://www.clio.com/about/careers/engineering/

Stitch Fix | Data Platform Engineer | Full-time | Remote (though we do have an office in San Francisco) | https://www.stitchfix.com/careers/jobs

I'm the hiring manager for two roles on our Data Platform team at Stitch Fix, one at the lead level, one at the principal level. Here's the blurb from our job postings, but feel free to reach out to me directly if you have any questions! jim.kubicek AT stitchfix.com

> The Data Platform team builds the foundation that powers everything from Stitch Fix's signature personalization to our most cutting-edge AI innovations. We exist to make our data scientists and engineers wildly productive - by delivering fast, flexible, and trusted infrastructure that fuels experimentation, recommendations, insights, and a new generation of AI/ML-powered experiences.

* https://www.stitchfix.com/careers/jobs?gh_jid=6819981&gh_jid...

* https://www.stitchfix.com/careers/jobs?gh_jid=6750033&gh_jid...

Charge Robotics | Mechanical Engineer | Full-time | Onsite / Hybrid | SF Bay Area

Hi HN! We’re a YC-backed, Series-A startup building robots that build large-scale solar farms.

Check out a video of our first system here! https://youtu.be/ZZ2fP1Y5Z2E

It turns out that construction companies literally can't build solar fast enough, so what we're doing is a crucial part of switching the grid over to renewable generation.

You’ll be a key contributor, helping bring our next generation of mobile solar factory to life.

Come work with us if you love:

* Fast-paced prototype development with software and hardware components

* Making a positive climate impact through your work

* Hacking on massive construction equipment!

Mechanical Engineer: https://www.workatastartup.com/jobs/64008

Fold | Remote (US Only) | Senior Frontend Engineer, Senior Design Engineer, Lead QA Engineer | Full-time

Fold makes Bitcoin easy through great UX and rewards. We’re building the future of Bitcoin payments and need senior engineers to help us scale.

---

Senior Frontend Engineer – Work on our React Native apps, ship features and own architecture. • 5+ years exp, React Native, TypeScript, Expo • Bonus: Fold user, passion for Bitcoin

Senior Design Engineer – Build and scale our design system in React Native. • Strong in React Native, TypeScript, modern component libraries • Bonus: Storybook, Framer Motion, design system expertise

Lead QA Engineer – Own automation, quality strategy, and mobile release confidence. • 5+ years in QA, 2+ leading QA or owning strategy • Experience with iOs and Android automation, Maestro/Detox/Appium

Perks: competitive salary + equity, 401k match, unlimited PTO, full benefits, yearly vacation stipend, no Monday meetings, Bitcoin starter pack.

Email tiffany.sawhney (a) foldapp.com or apply here: https://ats.rippling.com/fold-inc/jobs

More: https://foldapp.com

CVector | Full Stack Software Engineer | USA | REMOTE | Full-time | $75k – $120/yr + 0.3% – 1%

CVector builds software to make energy systems smarter, more reliable, and autonomous. We integrate real-time data visualization and analytics to help power generation stations, chemical plants, and other critical infrastructure make informed decisions in rapidly changing environments. You'll help create intuitive, robust web apps and backend systems, shaping tools that directly impact industrial operations and energy reliability.

Remote-first team with occasional domestic travel to connect with users directly. Recent graduates may need to relocate.

Full Stack Software Engineer: We're looking for a passionate Full Stack Software Engineer comfortable working across our stack (Python, Typescript, React, Supabase, MQTT, TimescaleDB, PostgreSQL, AWS, FastAPI).

Reach out to me at [email protected]

CreativeMode (S24) | https://creativemode.net | On-site - San Francisco, CA

CreativeMode is building Lovable for video game mods, starting with Minecraft. In our first three months, we built the most powerful no-code modding platform ever for Minecraft and created a double digit percentage of all mods ever released. We're building an entirely new category of gaming tools. Minecraft is only the beginning.

We're hiring a Founding Engineer who wants to build at the intersection of tech and gaming. Ideal candidates have a passion for the category and have experience building production-level LLM/AI applications or are killer full-stack engineers who can own product features end to end.

Ideally 3+ years of experience

Email me at [email protected] with your resume and a short blurb on why you'd like to join the team.

eventfirst | Senior Full-Stack Engineer | Berlin, Germany | REMOTE (CET) | Full-time

We are applying AI to organize corporate events.

We are looking for a senior engineer with at least five years of full stack experience, a strong focus on product and UX, and optionally some experience building LLM based products. Currently we are focussed on building tooling that enables us to capture domain knowledge from experts to streamline prompt creation and evaluation. Our tech stack is Typescript, React, Next.js and Tailwind. On the backend we use Drizzle with Neon, deployed and monitored via Vercel. We have pre-seed funding from a major US VC and are experienced founders. You’ll be working alongside the founders (ex-Apple, ex-Airbnb, ex-Tulip, ex-Tourlane) and will have a chance to shape the company, product and of course the engineering culture.

Apply here: https://taskwise.jobs.personio.com/job/1646275

Foxglove | Onsite or Remote | Full Time or Contract | https://foxglove.dev/

Foxglove is observability for robotics and physical AI. We accelerate robotics developers with logging, data management, and multimodal visualization. We're well funded (Series A, ~40 people) and assembling the most talented team in the industry to build a platform for all robots. Sound interesting? Join us!

Hiring across a number of roles, in San Francisco and some remote.

- Senior/Staff Frontend Engineer (typescript, react, webgl, rust, wasm)

- Senior/Staff Backend Engineer (rust)

- Senior/Staff Backend Engineer (rust, remote - Australia/NZ time zone)

- Senior/Staff Product Engineer (full stack typescript)

- Account Executive

- Forward-Deployed Engineer, Frontend

- Forward-Deployed Engineer, Backend

- Solutions Engineer, Robotics

- Dev Relations, Physical AI

Bonus points if you have prior experience at a top AV or robotics company.

*Remote friendly*: All roles are open to remote for experienced candidates (staff-level or prior experience at a top AV or robotics company)

Customer-facing roles outside of SF are remote but we are looking for candidates in those cities who can travel to customer sites.

https://foxglove.dev/careers

Revere Defense Technologies - Autonomous Networks and Infrastructure

San Francisco (Dogpatch) | On-site w/ flexibility | Full-time | Multiple Roles, $120k–220k + equity + benefits

Why: Comms are contested. Radios make you a target, satellites aren’t guaranteed, and brittle legacy networks won’t survive future fights.

What: We’re building an autonomous maritime network — think distributed systems in the ocean—extending resilient comms, sensing and compute to the edge in high-threat remote environments.

Who we are looking for:

- Software Engineers: large-scale distributed systems, networking, system design, embedded software, DevOps rollouts. Python, C++, Rust. Bonus: SDR, mesh, security.

- Electrical Engineers: PCB layout, embedded, RF, circuits, power/batteries, electro-mechanical. Bonus: DSP.

- Marine/Mechanical Engineers: pressure vessels, subsea robotics, gliders, ruggedized design; DFM, reliability, field deployment.

You will: ship code to robots, test on the water, move fast, own big surface area, and work directly with military operators.

About Us: Our founding team includes a Navy SEAL veteran, defense industry engineers, builders, hackers, and watermen (sailors, boaters, divers, fishermen). We’re focused on real future missions — not legacy requirements. Venture-backed; public launch soon.

Eligibility for a TS/SCI security clearance is a plus. Please send a short note + resume/portfolio to [email protected] with subject HN – Engineering.

Channel3 | NYC | $120–200K + 0.5–1.5% equity | Full-time

Channel3 is hiring a Founding Engineer to help us build a database of every product on the internet.

Our API lets any AI app or agent add shopping capabilities and earn commission on sales. As commerce moves from in-store, to online, to AI-native, this universal product catalog becomes critical infrastructure. We see Channel3 becoming as foundational to AI commerce as Stripe is to payments or Plaid is to fintech.

We just closed a $6M seed round led by Matrix (Apple, FedEx, AfterPay) with participation from Ludlow (Honey, StockX), Y Combinator, and Paul Graham. We're live with 500+ developers on our API and millions of products processed daily.

We're looking for engineers who want direct ownership of technical decisions, love solving hard problems at scale, and want to help build our team and culture from the ground up.

This role is in person, 5 days a week, in NYC. Unfortunately, we cannot sponsor visas.

Apply at https://bookface.ycombinator.com/company/30695/jobs/80837 or email [email protected], sharing a few bullets on a project you built 0-1 and your resume/LinkedIn.

Zeven | Senior Backend Developer | ONSITE in Zurich (Switzerland) | Full-time | Competitive salary + stock options

We're a newly-founded and well-funded startup that is seeking to revolutionize the sports industry with AI-powered solutions. Our mission is to unlock human potential and redefine the sports experience through innovation and technology.

We are looking for an experienced Senior Backend Developer and sports enthusiast to join our on-site team in Zurich, Switzerland. This is a hands-on, high impact role. We use Typescript for web, Python for ML, PostgreSQL, React + TanStack, AWS and SST.

Please see the Full Job Description [https://tinyurl.com/sw-zeven] for requirements and more details about our Tech Stack.

We are offering full-time employment with a competitive package:

• Competitive salary and stock options.

• Pension plan bonus and 25 days of paid vacation plus public holidays.

• Charming office next to the lake of Zurich with fully-equipped kitchen.

• Top-notch equipment (MacBook Pro laptops, standing desks, etc.).

• We love to organize company outings and sport events.

If you're a motivated and experienced backend engineer who is crazy about sports and looking for a new challenge, we'd love to hear from you! Please email CVs to [email protected]

We do not consider remote candidates, agencies and candidates located outside the EU/UK/EEA/Switzerland

Formal | Multiple Positions | REMOTE | Full-Time | $100k - $250k + Equity

At Formal [0], we’re rethinking serverless from scratch: we’re building a new computing stack for instant, globally available, truly elastic, soundly isolated execution. We leverage formal methods and languages to build OS interfaces with low overhead, formally verified isolation without containers or VMs. Our immediate goal is to write a new programming language to replace eBPF and build the world's first serverless networking infrastructure.

We are a 5-person, VC-funded team with PhDs from Stanford, UW, OSU, and Brown, advised by professors from MIT and UWaterloo. We are currently hiring for the following four positions:

- [1] Staff Software Engineer: Compilers, Programming Languages, and Verification (≥ $200k + ≥ 0.5%)

- [2] Formal Verification Engineer: Formal Methods and Programming Languages ($120k - $200k + ≥ 0.25%)

- [3] Software Engineer: Compilers and Programming Languages ($100k - $175k + ≥ 0.2%)

- [4] Formal Methods PhD Intern: Formal Methods and Programming Languages (≥ $5k / month)

Please see [5] for general information. To apply, email us at (work at formalstack dot com) and let us know how your experiences fit the role and its requirements.

[0]: https://formalstack.com [1]: https://formalstack.com/jobs/09-2025/staff-software-engineer... [2]: https://formalstack.com/jobs/09-2025/formal-verification-eng... [3]: https://formalstack.com/jobs/09-2025/software-engineer-v.pdf [4]: https://formalstack.com/jobs/09-2025/formal-methods-phd-inte... [5]: https://formalstack.com/jobs/09-2025/info.pdf

Braden Health | Boise (ONSITE) | Full-time

We are writing and maintaining health software for rural hospitals in Tennessee and Virginia. Small team, products in active development.

We are looking for a full stack developer, comfortable in backend and frontend.

Tech we use: C#, ASP.NET, TypeScript, React, Sql Server. Nice to have: knowledge of HL7, general familiarity with how hospitals work

Email resume to [email protected]

Nebula | Multiple roles | Remote/Onsite NYC preferred | Full-time

Nebula is building a modular blockchain stack to make on-chain finance faster, fairer, and more efficient than off-chain. The stack has 3 parts:

1. Execution environment – combines Rust + Sovereign SDK for highly performant, expressive private apps (e.g. solving latency asymmetry in exchanges). 2. Privacy protocol – blends cryptography + privacy hardware for verifiable, fast programmable privacy. 3. Nebula Exchange – a hyper-performant exchange using batch auctions + private orders to eliminate latency asymmetry and guarantee best prices. We’re hiring ambitious engineers to join the core team:

- Frontend (React/TS/Next.js) – focus on architecture, design systems, interactivity, realtime apps, Figma → production.

- Backend (Rust/Go) – core infra + SDK integration.

Requirements: detail-obsessed, independent problem solver, thrives in chaos, good communicator, can work ET hours. Nice to have: exp. in financial exchanges, realtime data-heavy apps, web3. Note: workload can be intense (sometimes 80+ hrs/wk).

If this challenge excites you, send CV → [email protected]

Stainless | Engineers, EMs, Former Founders, GTM, Business, more | NYC & SF ONSITE | Full-time

Stainless is building the platform for high-quality, easy-to-use APIs.

When you `npm install openai` or `pip install anthropic` or `go get …cloudflare`, for example, you’re downloading code that we generated.

We’re ~3y old, ~35 people, have strong revenue, several years of runway, and great customers (including OpenAI, Anthropic, and Cloudflare). We’re backed by Sequoia & a16z.

As one of our first 30 engineers, you’ll get autonomy to build great products, skilled peers, opportunity for tremendous impact, and competitive salary, benefits, and equity.

We’re looking for exceptionally productive, thoughtful, tasteful, and kind people with a passion for making software development better for everyone.

Want to build the future of API tooling? See more at stainless.com/jobs

Fundamental Research Labs | Fullstack, Product, + Software Engineers, Ex-founders, Researchers | Menlo Park, CA | https://fundamentalresearchlabs.com

We're an applied research company building autonomous, collaborative, and socially intelligent agents. Our small team includes computational neuroscientists, AI researchers, engineers, and builders from MIT EECS, Stanford NLP Group, Google X, Citadel, and beyond.

Our latest product, tryshortcut.ai, just launched over the summer to amazing reception and we’re just getting started.

We compensate well above market and provide generous equity.

We’re looking for:

—> Engineers and ex-founders to build Agent-first products. We have an organizational structure where product leaders are given great autonomy to experiment and ship fast.

—> Researchers to develop frontier technologies in the Agents domain. We do everything from sophisticated Agent orchestration to SFT/RL post-training of foundation models.

https://jobs.ashbyhq.com/fundamentalresearchlabs