# Software Engineer, Full Stack, Tinker

**Company:** [Thinking Machines Lab](https://hotfix.jobs/companies/thinking-machines-lab)
**Location:** San Francisco, CA, New York, NY
**Role:** Fullstack Engineering
**Salary:** $350k – $475k/yr
**Experience:** 4+ years
**Skills:** Python, Rust, React, TypeScript, APIs, Sdk, Cli, Distributed Training, Gpu Scheduling, Job Orchestration
**Posted:** 2026-07-02

> Full stack engineer building Tinker's fine-tuning platform. Develop backend APIs and orchestration in Python/Rust, frontend console in React/TypeScript, improve developer experience and system reliability for ML training users.

## Job Description

## Responsibilities
- Build and extend Tinker's APIs and backend services in Python and Rust, from job submission and orchestration to billing and usage tracking.
- Ship user-facing product surfaces — console and future tools — with React and TypeScript.
- Improve the developer experience for Tinker users: SDK ergonomics, error messages, API design, onboarding flow.
- Improve system reliability, observability, and security across Tinker's production environment; participate in on-call.
- Build internal tooling that accelerates the Tinker research and infrastructure teams.

## Requirements
- Bachelor's degree or equivalent experience in computer science, engineering, or similar.
- Proficiency in at least one backend language (Python and Rust).
- Some familiarity with React, TypeScript, or mobile platforms.
- Thrive in a highly collaborative environment involving many different cross-functional partners and subject matter experts.
- A bias for action with a mindset to take initiative to work across different stacks and different teams where you spot the opportunity to make sure something ships.

## Preferred Qualifications
- 4+ years building backend systems in production.
- Experience designing and maintaining backend APIs at scale, especially for developer-facing platforms.
- Experience building tooling or products for ML training, fine-tuning, or inference workloads.
- Familiarity with distributed training infrastructure, job orchestration, and GPU scheduling.
- Ability to build high-quality, production-level UIs from prototype to polish.
- Experience with developer experience work — SDK design, CLI tooling, API ergonomics, documentation.

## Compensation and Benefits
- Expected annual salary range: $350,000 - $475,000 USD.
- Generous health, dental, and vision benefits.
- Unlimited PTO, paid parental leave, and relocation support as needed.

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