Tech Lead, LLM & Generative AI (Full Remote - Ukraine)

8+ years of engineering experience Significant portion dedicated to shipping ML/LLM features to millions of active users Proficient in Python/PyTorch Comfortable with the modern LLM stack (vLLM, HuggingFace, fine-tuning pipelines, eval frameworks) Comfortable working with NSFW content Understanding of technical rigor for NSFW moderation Intuition for LLM alignment (prompt conditioning, temperature, sampling) Doer mindset: value velocity and shippable production solutions Owner mindset: obsess over metrics, regressions, and user experience

Act as a Player/Coach for the LLM team Architect the system and mentor engineers Spend significant time hands-on in the codebase (Python/PyTorch) Own the core chat loop: optimize context windows, memory/RAG retrieval, and inference latency Drive strategy for SFT and RLHF/DPO Manage the 'Data Engine' for sourcing, labeling, and cleaning datasets Design and train custom classifiers for content moderation Create nuanced, context-aware moderation systems