Location: Szczecin, Poland (EU)
  Remote: Yes
  Willing to relocate: No
  Technologies: iOS (Swift, SwiftUI, Objective-C), Metal, OpenGL, CoreData, CoreML, LLM fine-tuning, on-device AI deployment
  Experience: 19 years software development, 14+ years iOS
  Email: [email protected]
  LinkedIn: https://www.linkedin.com/in/greg-ligierko/

Senior iOS developer and technical co-founder specializing in high-performance applications with AI integration. Expert in graphics optimization (Metal/OpenGL), real-time visualizations, and embedding ML models for on-device inference. Experience with LLM fine-tuning, vector search optimization, and converting large models to compact on-device implementations. Led development of multiple App Store-featured apps including WikiNodes. Currently built a system navigating 1.5M+ words with 110M+ relationships using Metal shaders at 60fps. Seeking remote senior/lead role.

Personal site: https://www.pgligierko.com/

Recent project: A pathmaking wordplay game: https://www.inotherwords.app