Machine Learning Engineer

📋 Job Overview

About Coframe: At Coframe, we are building a future where user and agent interfaces can adapt, evolve, and personalize themselves. We are generating revenue, growing rapidly, and trusted by companies you definitely know. Coframe is a primarily in-person company based in San Francisco, well-capitalized with backing from Khosla Ventures, Nat Friedman, the founder of Android, and others. Our team is small and talent-dense, consisting of competitive programmers, former founders (including our founder who previously co-founded a unicorn), and AI researchers from top institutions who have created some of the most popular open-source code generation projects.

🏢 About Coframe

As a Machine Learning Engineer, you’ll build the models that power performance optimization at Coframe. You’ll train both foundation models and customer-specific models that predict and improve how users engage, click, and convert, and you’ll own each model’s lifecycle end to end: from initial idea, through research and training, to the infrastructure that deploys it.

🎯 The Role

You’re a great fit if you have:

✅ Key Responsibilities

• 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 that guide what Coframe generates and ships
• 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 that tie model performance to real customer outcomes
• Build feedback loops that let models continuously improve from real-world experiment results
• Work with technical and non-technical teams to turn customer goals into models, metrics, 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

⭐ Desirable Experience

• 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

🛂 Visa & Eligibility

Coframe is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other characteristic protected by applicable federal, state, or local law.