Ask HN: Who is hiring? (September 2025)

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

*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.

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

Undetect.io | Counter-Security / Reverse Engineer | Full Time / Part Time | Remote, Global

We're looking for a TypeScript engineer to join our team with a tight focus on stealth browser automation tools and RE / adversary intelligence pipelines.

You should have:

• Strong TypeScript, Node.js, CDP (Chrome Devtools Protocol) experience.

• Interest in C++ and Chromium internals.

• Experience evading or analyzing anti-bot and WAF systems.

• Practical experience reverse engineering & deobfuscation of heavily obfuscated / defended JavaScript.

• Intermediate / advanced understanding of browser fingerprinting and distributed proxy systems (or eagerness to learn).

• Able to provide examples of clean, maintainable code.

• Familiarity with Docker, Cloudflare Workers, and basic devops.

We're a lean, fast-moving team working on hard problems with real-world impact for enterprise clients, including many Y-Combinator success stories.

Email us: [email protected]

*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.

We are LIFEPOWR! Antwerp (Belgium) | Full-time | Remote (Europe) or hybrid (Antwerp) | https://www.lifepowr.io/en/about-us/career

A young and dynamic company, active in energy transition and scaling up!

We are looking for a OPS Application & AI Developer

Your role will be:

-Customizing and maintaining our ERP platform hosted on Odoo.sh

-Developing custom modules, integrating third-party tools, optimizing workflows

-Supporting our internal teams with technical solutions

Send your back-end development expertise and your understanding of Odoo.sh!

Make sure to send your resume, GitHub profile (if available), and examples of past Odoo customizations to [email protected], including “OPS Application & AI Developer - Hacker news” in the subject line.

ELI Beamlines (ELI ERIC) | Dolní Břežany (Prague), Czech Republic | Onsite (with HO) | Full‑time

We operate one of the world’s leading high‑power laser research facilities (up to 10 PW) and support an international user community. We’re hiring:

• Director for Technology Lead the Technology Division (laser beam transport, instrumentation, engineering services, control systems, data infrastructure). Set the technical roadmap, grow teams, and ensure reliability and integration across the facility. Apply: https://www.eli-beams.eu/careers/director-for-technology/

• SW Control Systems Developer Join the Controls Hardware Integration team. Build and maintain device control & data‑acquisition for lasers/beamlines (EPICS). Write IOCs/services in C/C++/Python, integrate hardware, and collaborate with scientists on Linux. Apply: https://www.eli-beams.eu/careers/sw-control-systems-develope...

• Web Developer for Data Visualization Build interactive tools and UIs that help researchers visualize experiment data and plan setups (from dashboards to 3D/WebGL). Work across Python backends & modern JS frontends; design clean APIs; familiarity with Jupyter/three.js/D3 a plus. Apply: https://www.eli-beams.eu/careers/web-developer-for-data-visu...

• Safety Systems Engineer (PLC / Interlocks) Own the PLC‑based Personal Safety Interlock (PSI): define state logic, supervise installation/upgrades with suppliers, commission new areas, and keep documentation, testing and availability tight. Apply: https://www.eli-beams.eu/careers/safety-systems-engineer-152...

How we hire: CV → HR pre‑screen → interviews (in‑person or Webex). Questions? Email HR: [email protected] Or me with technical ones [email protected]

About us: ~350 people from 38+ countries; easy public‑transport commute from Prague. Keywords: EPICS, Python, Linux, PLC/Safety, JavaScript/TypeScript, Git.

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

Composio | Senior Backend Engineers + Product Engineers (Frontend + SDKs) | Full-Time | In Office (SF and Bengaluru, India)

Hi HN, we’re building https://composio.dev — the fastest way for AI agents and developers to take action across apps like GitHub, Gmail, Slack, and more. Our SDKs (TypeScript + Python) and APIs let developers connect and execute tools in just a few lines of code.

We’re a small, fast-moving team obsessed with developer experience. Our stack is TypeScript-heavy: backend in TS/Go/Python, frontend in React/Next.js, SDKs in TS/Python. You’ll work across product and engineering to define APIs, craft abstractions, and ship features used by thousands of developers.

We’re early stage, small team and looking for engineers who want ownership and impact.

Feel free to reach out to me with your resume and links of your work: [email protected]

EAGL | Ghent, Belgium | Onsite | Full-Time

EAGL is a fintech startup that unifies controlling and accounting with AI-powered agents that automate close processes, flag anomalies, and clean P&L so finance teams can focus on strategy, not spreadsheets.

https://www.geteagl.com [email protected]

We're looking for full-stack (Frontend, Backend, AI) profiles that want to dive into the fintech world. Node, react, postgres, ...

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.

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

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.

fleming.de | Full Stack Engineer | Magdeburg, Berlin, Hybrid (Germany) | Full Time | German required

Fleming (www.fleming.de) is digitalizing financing for health professionals. We are building and maintaining a React-Native / Nestjs based bank account frontend and a Salesforce base loan sales platform with a Ruby on Rails frontend. We are looking for a well-rounded engineer. You don't have to know the technologies we are using if you bring the conceptual knowledge and the drive to learn.

Some German language knowledge is required since you are going to build German UIs

more info: https://fleming.de/jobs/

Contact [email protected]

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/...

ARound (web-based augmented reality for sports) https://aroundar.com - a Stagwell company - https://www.stagwellglobal.com | Backend Engineer | Remote (Based in UTC -8/-7/-6/-5/-4 timezones only) | 20-40 hours a week TBD | Contract or contract-to-hire

Backend development in support of web-based augmented reality experiences and games for mobile devices. API integration and development. Management of cloud infrastructure and services.

Key technologies are Node.js, Rust, PostgreSQL, Digital Ocean. Experience with video streaming (RTMP, WebRTC). Some degree of familiarity with TypeScript, Vue.js, and Babylon.js is desirable.

Strong interest in sports is ideal (although fandom is optional).

I’m the hiring manager, no intermediaries. I’m not interested in hearing from outsourcing agencies or recruiters. Candidates only, please. Thank you. : )

[email protected]

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

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]

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.

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]

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

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...

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/

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

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).

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]

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...

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...

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

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

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

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

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.

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]

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]

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

Deep Film inc. — SF, CA (Hybrid → Onsite) Senior Founding Engineer (AI/ML)

You’re here to reshape the film industry with AI. At Deep Film Inc., you’ll take multimodal diffusion and transformer models from research to production—mastering quantization and pruning to make them leaner and faster. Your CI/CD pipelines and MLflow integrations won’t just keep us running they’ll redefine how stories are told. You’ll scale training across GPU clusters with Horovod and Optuna and build resilient data pipelines with Kafka, tf.data, or whatever it takes to get the job done.

You’ll join with founding-level equity and access to state-of-the-art hardware. Optional relocation to California will be available post-launch in January 2026.

Why You? You thrive on hard problems, are obsessed with deep learning, and see AI as a way to transform storytelling. Whether you’re a seasoned expert or emerging talent, show us your impact: a GitHub repo with production grade systems, optimized ML models, or a demo that leaves us speechless.

Send us a 3-sentence pitch explaining: 1 Your passion for AI and storytelling 2 Your standout achievements 3 How you’ll shape our platform Include proof of work No résumés. No cover letter fluff.

We move fast—expect a reply within 12 hours.

[email protected]

Pex - part of Vobile Group | US | Full-time [1]

We serve everyone who uses the Internet to view, share, or create content - from the largest platforms and rightsholders, to independent creators. Pex automated content recognition technology identifies uses that other tools can’t detect, including modified audio with speed, pitch, tempo, language, and other distortions.

We are hiring for the Senior Site Reliability Engineer (on-site, Gainesville, FL) [2]

We offer:

    - Generous pay range based on skills and experience
    - Unlimited PTO + 10 paid holidays
    - Medical, dental, and vision insurance with FSA options, 401(k) plan
    - A supportive culture and excellent work-life balance

—

    [1] https://pex.com/
    [2] https://pex.com/senior-site-reliability-engineer-07-2025/

Shorebird | Mid-Senior across Web, Dart, Full Stack or C++ | Remote (North America) | Full-time | $150-230k + equity | https://shorebird.dev

Flutter/Shorebird founder here. Flutter is used by millions of devs (and nearly ⅓ of free apps submitted to AppStore), but is missing services for businesses. We sell Flutter-related Saas to 1000s businesses globally, on track to profitability early 2026. Need your help to build more products for Flutter developers.

We’re a small, senior team, making something people want. Tech: Dart, GCP, Cloudflare, React, C++. Shorebird operates almost entirely in the public over Discord. https://discord.gg/shorebird

https://shorebird.dev/jobs

ClickHouse | Senior Software Engineer - Distributed Systems / Cloud Data Infrastructure / Kubernetes | Remote

(US preferred right now, EU is technically fine but I'm looking to ramp up in US atm)

ClickHouse is a popular, Open-Source OLAP Database. We are ClickHouse Inc, the company behind the database aiming to build the best in class real time data warehouse.

What we are looking for:

Distributed Systems / Cloud Engineers to build the AutoScaling Systems for a Cloud Database.

We also maintain our own ClickHouse-based Data Infrastructure. Bonus points if you've worked on auto-scaling or other data-driven forecasting challenges in the past.

    Can work in an early stage startup environment. Proactive and hands on.

    You must be independent and self-organised.

    Good at Go, Kubernetes (Understanding how to manage stateful services in a multi-cloud environment)

    We have a Python service in our Recommendation pipeline, so some ML/Data Science knowledge would be good.

    SQL / ClickHouse SQL (goes without saying)

    You'll need to be able to do On-Call - debugging production infra or db issues

    If you can do low-level database programming (C++, ClickHouse) that's added bonus.

Send me an email: manish.gill [at] clickhouse [dot] com

[0] https://www.youtube.com/watch?v=AFoMsLMZKik [1] https://www.youtube.com/watch?v=ufY_JFPpzRI

PS: If you're a pure DevOps person or a pure Data Engineer who wrangles data tools, please consider the above requirements before firing off an email. This role is an intersection of a lot of sub-roles, not a particular specialization.

VeritusAgent | https://www.veritusagent.ai | Full Stack Software Engineer | Hybrid - San Francisco | Full-time | $200k + 0.5% - 1%

We started two months ago and our AI agents are already live and making calls! We're scaling fast and hiring a full stack engineer to join our team in-person in SF

https://www.ycombinator.com/companies/veritus-agent/jobs/cvH...

Reach out to me directly!

Charlie Labs | Remote (Global) | Full-time | TypeScript code agent

We’re building an AI teammate that fixes bugs, writes features, and reviews PRs asynchronously. Small team, big surface area.

Open roles

Full-Stack Product Engineer (TS/React, Next.js, design-system chops)

Backend Engineer (event/queue systems, GCP, BigQuery, observability)

AI Engineer (LLM agents, eval-driven iteration, tool use, reliability)

Developer Relations (TypeScript demos, fun stuff, talks, OSS)

Our stack TypeScript across the stack - GCP (Cloud Run, Pub/Sub, BigQuery, IAM, Secrets)

Why Charlie? Tiny team → outsized ownership and velocity Remote-first, async-native; few meetings, lots of shipping Real runway (seed $10M) and meaningful equity

Email [email protected] with your GitHub + LinkedIn (or resume)- https://charlielabs.ai/careers

Rinse | IT Manager / Network Administrator / System Administrator | Hybrid in SF Bay Area, Los Angeles, New York (Brooklyn), Boston, Chicago, Seattle, Washington DC, or Newark. (Primarily remote with some on-site responsibilities.) | Full-time | https://www.rinse.com

Rinse provides dry cleaning and laundry delivery services to customers in eleven metropolitan areas in the US. We have sophisticated logistics optimization software, a polished consumer product, and firm business fundamentals. We're now over a decade old - this is a stable, yet consistently growing and innovating, company.

Given our distributed nature, we have growing network and workstation infrastructure, and it's time to hire our first full-time leader to manage this system. The ideal candidate can:

- Operate with autonomy and integrity across network, server, infrastructure, and desktop environments

- Communicate cross-functionally, to internal stakeholders at all levels

- Navigate our (primarily Linux) technical environment

- Spearhead projects to improve our technology's security, reliability, and functionality

- Facilitate our corporate efficiency via desktop administration

Because this role has some physical hardware responsibilities, we'd prefer it be filled by someone in the above localities, even though the vast majority of the role can be performed remotely.

We're open to both newly-graduated or more senior technically-minded individuals and managers, provided they meet our bar.

Search term bingo: Logistics, Linux, Python, Ansible, Systems Administration, Network Administration, Information Technology, Amazon Web Services, AWS, Cloudflare, Automation, Security, Systems Engineer.

https://www.rinse.com/careers/it-associate/

https://www.rinse.com/careers/it-manager/

Greenline | Founding Engineer Roles | Remote (U.S. only) | https://www.greenline.ai/careers

Greenline unlocks mortgage lending for self-employed borrowers.

We just closed our seed round led by Bowery Capital and Uncork to tackle this messy problem. More importantly, we're launching with the largest lenders and investors in the mortgage-backed securities market.

We're growing our founding team:

- product/ full stack engineer: own and accelerate customer-facing feature development

- backend: lead core, data-centric systems and infrastructure

- platform/ API: architect and build a public-facing ergonomic API for scalable integrations with enterprise systems, critical to unlocking key customers and partner-driven growth.

Sourcetable.com | Product Marketing (contract) | San Francisco We're building a spreadsheet-based operating system for the web, although on first touch Sourcetable feels more like Excel Copilot or "Cursor for spreadsheets".

We're looking for one Product Marketer to join our team in a part-time contract capacity in the Bay Area (San Francisco preferred). The requirement are that you need to be great at video storytelling and also be strong at spreadsheets & analysis.

Everyone on our team codes, and you should too. There's no technical requirement for the role, per-se, but we have found it is better this way.

Email me if this sounds interesting.