# Research Engineer, Developer Experience, Tinker

**Company:** [Thinking Machines Lab](https://hotfix.jobs/companies/thinking-machines-lab)
**Location:** San Francisco, CA
**Role:** Developer Relations
**Salary:** $350k – $475k/yr
**Skills:** LLMs, supervised learning, Reinforcement Learning, hyperparameter tuning, Python, software libraries, Open Source, developer experience, Model Training, Fine-Tuning, model inference, jupyter
**Posted:** 2026-04-27

> Research Engineer focused on helping developers use a fine-tuning platform through cookbook recipes, libraries, integrations, demos, and technical guidance. The role requires hands-on experience with LLM fine-tuning, software library development, and communicating technical concepts to users.

## Job Description

## Responsibilities
- Write, test, and maintain high-quality code examples, recipes, and documentation in the Tinker cookbook.
- Work directly with users to debug technical issues and optimize fine-tuning pipelines.
- Partner with research and infrastructure teams to identify and prioritize developer experience improvements.
- Build tools, integrations, and demos that reduce user friction and simplify model experimentation and deployment.
- Share user insights through posts, guides, and talks.
- Help develop Tinker’s near-term roadmap and long-term product strategy.

## Requirements and Preferred Qualifications
- Experience fine-tuning large language models with supervised and reinforcement learning.
- Experience tuning hyperparameters for fine-tuning algorithms.
- Experience developing software libraries, especially open-source libraries.
- Thoughtful approach to developer experience, developer ergonomics, onboarding flows, and usability.
- Passion for engaging with open-source communities through code contributions, technical support, or knowledge sharing.
- Experience writing public or internal code examples, tutorials, or papers that help others understand and apply technical concepts.
- Ability to reason about model training, fine-tuning, and inference, including tradeoffs between approaches.

## Compensation and Benefits
- Expected annual salary: **$350,000–$475,000 USD**, depending on background, skills, and experience.
- Visa sponsorship available.
- Health, dental, and vision benefits.
- Unlimited paid time off.
- Paid parental leave.
- Relocation support as needed.

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