Ideally 7+ years of software engineering experience, with 3+ years building ML/AI-powered features in production. Proven experience shipping production AI/GenAI features end-to-end. Strong background as a Staff-level product software engineer (not data science or ML-research-only). Experience iteratively improving GenAI-powered features based on quantitative and qualitative signals. Ability to design, run, and evaluate experiments for AI features. Prior on-call experience supporting production systems. Deep expertise in LLMs, prompt engineering, retrieval-augmented generation, and evaluation methods. Proficiency in backend development using Python, Go, Ruby, TypeScript or a similar language. Strong cross-functional skills and a track record of collaborating closely with PMs and designers. Comfort navigating ambiguity and driving clarity in fast-paced environments.