Machine Learning Engineer

The role

You will build foundation and customer-specific models for performance optimization. You will own the full model lifecycle from research and training to deployment infrastructure.

What you will do

• Build foundation models and customer-specific models for performance optimization
• Fine-tune VLMs and LLMs to understand and improve digital experiences
• Train ranking, CTR, conversion, and engagement models
• Own the full model lifecycle from idea and research through training, evaluation, and deployment
• Build and scale the ML infrastructure for training, serving, and monitoring models in production
• Develop online and offline evaluation systems
• Build feedback loops for continuous model improvement
• Work with technical and non-technical teams to turn customer goals into models and product improvements

Required qualifications

• Experience fine-tuning vision-language models (VLMs) or large language models (LLMs)
• Experience training ranking, click-through rate (CTR), conversion, or engagement models
• Strong ML infrastructure experience, including training pipelines, data systems, and model serving
• The ability to own models end to end, from research and experimentation to production deployment
• Strong software engineering fundamentals and experience shipping reliable production systems
• The ability to translate business metrics into modeling objectives and rigorous evaluations
• Curiosity, pragmatism, and excitement about working on problems with no established playbook
• A track record of exceptional achievement, whether in industry, research, or academics

Nice to have

• Experience building agent loops, edge or low-latency model serving, and working with e-commerce, growth, or experimentation teams

Benefits

• Flexible (Unlimited) Paid Time Off
• Top-of-the-line Medical, Dental, and Vision benefits for you and your family
• Life Insurance and Disability Benefits
• 401k Plan with Coframe match
• All meals fully covered in-office
• Gym membership

About the company

Coframe is building a future where user and agent interfaces can adapt, evolve, and personalize themselves. The company is primarily in-person based in San Francisco and is backed by Khosla Ventures, Nat Friedman, and the founder of Android.