Developer Experience Engineer (AI)

Location: San Francisco, California, United States; work arrangement: on-site

Annual salary: $300,000–$350,000 USD

Company

Thinking Machines Lab builds AI systems intended to extend human judgment and agency, including frontier models, the Tinker fine-tuning API, and interfaces for human-AI communication.

What you will do

• Build Tinker while using it directly, turning user challenges into product improvements.
• Write, test, and maintain code examples, recipes, and documentation for the Tinker cookbook.
• Debug technical issues with users and optimize their fine-tuning pipelines.
• Develop tools, integrations, and demos that simplify model experimentation and deployment.
• Partner with research and infrastructure teams to prioritize developer experience improvements.
• Share user insights through blog posts, guides, talks, and code examples while contributing to product strategy.

Requirements

• Experience fine-tuning large language models using supervised and reinforcement learning, including tuning algorithm hyperparameters.
• Experience developing software libraries, particularly open-source libraries.
• Strong understanding of developer experience, developer ergonomics, onboarding, and usability issues.
• Experience engaging with open-source communities and creating code examples, tutorials, or technical papers.
• Ability to reason about model training, fine-tuning, and inference and explain tradeoffs between approaches.
• Ability to work on-site in San Francisco, California.

Culture & Benefits

• Health, dental, and vision benefits.
• Unlimited paid time off and paid parental leave.
• Visa sponsorship is available.
• Relocation support is provided as needed.