Senior AI/ML Engineer

About this role

About the role Our client is a well-funded AI startup building production-grade ML infrastructure used by enterprise customers. They are looking for a Senior AI/ML Engineer to own model training pipelines, evaluation systems, and inference serving at scale. Full-time, on-site in San Francisco.

WHAT YOU WILL DO

- Design and ship end-to-end ML systems: data pipelines, training, evaluation, deployment

- Own model performance, latency, and cost trade-offs in production

- Build evaluation harnesses and offline benchmarks for fast iteration

- Work directly with product to translate ambiguous goals into measurable model improvements

- Mentor other engineers on ML best practices and code quality

WHAT WE ARE LOOKING FOR

- 4+ years of applied ML engineering in production environments

- Hands-on experience with LLMs, fine-tuning, RAG, or large-scale recommender systems

- Strong Python and PyTorch (or JAX) fundamentals

- Experience with distributed training, GPU optimization, or inference serving

- Pragmatic about trade-offs between research-grade and ship-grade work

This role is presented by a recruiting partner. Company name shared after an initial conversation.

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