ML Engineer, Generative Video - AI Video Startup

You've trained image or video generation models and shipped them to real users. Now own the models behind a fast-growing creative product.

A young AI lab in San Francisco makes video creation as easy as AI made coding, with a desktop app that brings a large library of AI models, search, motion graphics and editing into the AI assistant people already use. The product has strong traction, and the team is now building its own compact models to make it quicker and more capable. As their ML engineer, those models are yours: how they're trained, how they're tested, and which data makes them better.

What you'll own

• Training and testing every model that runs in the product
• Benchmarks and feedback cycles for the video models they use
• Converting real user behaviour and creative taste into high-quality training and test data
• Compact in-house models that speed the product up

Must-haves

• You've personally trained or fine-tuned diffusion, flow-matching or similar generative models for images or video (using them via an API doesn't count)
• You've taken models all the way into production. This is a builder role, not one for pure researchers or evaluation specialists.
• A strong track record on the video, vision or generative-media side at a major tech company or a leading generative-media lab
• A strong feel for which data actually improves a model, and how to gather and clean it
• On-site in San Francisco every weekday; happy to help you relocate
• Roughly 3-6 years of experience

Bonus points

• A specific image or video model or feature with your name on it
• Benchmarks, evaluation tooling or data pipelines you built for generative models
• Publications or open source, on top of what you shipped

What's in it for you

• $200k-350k base + 0.1-0.7% equity
• Full ownership of the proprietary models on a team of fewer than ten
• Visa sponsorship available

Good to know

• Full-time, on-site in San Francisco, 9-9-5
• Process: first call with the CTO, a day working together on site, culture conversation with the CEO, references, offer