Machine Learning Engineer

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 THE ROLE:

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.

YOU’RE A GREAT FIT IF YOU HAVE:

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

WHAT YOU’LL 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 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

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

WHY COFRAME:

Elite Team: Our founder is a serial entrepreneur who previously co-founded a $2B+ unicorn with Tom Brady and guest lectures AI at Stanford. Our team includes researchers from top institutions who created some of the world's most popular open-source code generation projects.

OpenAI: We’re the only marketing technology company officially partnered with OpenAI. Our engineers and researchers work directly with their team to co-train a model specifically for our use case, which is a differentiator, and a testament to the technical caliber of our team.

Inbound Leads: We’re currently growing at 120% QoQ with a consistent flood of inbound demand. We’re looking for the right saleshumans to capture this demand and market opportunity.

Top VCs: We’re backed by tier-1 investors including Khosla Ventures, Nat Friedman (former GitHub CEO), and Rich Miner (Android co-founder). Joining now means getting a seat on the rocket ship before our Series A: a once-in-a-lifetime opportunity to join in the early innings.

Already Crushing It: For our first product, we built proprietary generative AI technology that enables our Agents to autonomously design, code, debug, and deploy A/B tests, Landing Pages, and Personalization experiences. We effectively 10x testing velocity, replacing agencies, legacy tools, and the need to pull in-house designers and engineers for testing. In the last 6 months, we have already driven $221.4M in incremental revenue for our customers like Dropbox, Replit, and Intuit.

“You guys are insane.” - OpenAI team

“Coframe makes you feel like you have a team of 100 people.” - Replit team