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

8+ years of engineering experience, with a significant portion dedicated to shipping ML/LLM features to millions of active users. Proficient in Python/PyTorch and comfortable with the modern LLM stack (vLLM, HuggingFace, fine-tuning pipelines, eval frameworks). Comfortable working with NSFW content and understanding the technical rigor required to moderate it effectively. Intuition for Alignment: Understands LLM physics and how various parameters affect chatbot behavior. Doer Mindset: Values velocity and can distinguish between academic and shippable production solutions. Owner Mindset: Obsesses over metrics, regressions, and user experience.

Act as a Player/Coach: Architect system and mentor team, while spending significant time hands-on in codebase (Python/PyTorch). Own the core chat loop: Optimize context windows, memory/RAG retrieval, and inference latency. Drive strategy for SFT (Supervised Fine-Tuning) and RLHF/DPO (Preference Optimization). Manage the "Data Engine": oversee sourcing, labeling, and cleaning of diverse datasets. Design and train custom classifiers for moderation within an explicit environment.