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

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). Understand the 'Uncensored' challenge and technical rigor for moderation. Intuition for LLM alignment (prompt conditioning, temperature, sampling). Doer mindset valuing velocity and shippable production solutions. Owner mindset obsessing over metrics, regressions, and user experience.

Act as a Player/Coach, architecting systems and mentoring the team. 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': oversee sourcing, labeling, and cleaning of diverse datasets. Design and train custom classifiers for content moderation.