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Senior AI RL Engineer — Systems & Infrastructure

Job in San Francisco, San Francisco County, California, 94199, USA
Listing for: Mechanize
Full Time position
Listed on 2026-09-09
Job specializations:
  • Software Development
    AI Engineer (Applied/Software)
Salary/Wage Range or Industry Benchmark: 180000 - 240000 USD Yearly USD 180000.00 240000.00 YEAR
Job Description & How to Apply Below

Mechanize, a San Francisco–based start-up building reinforcement learning environments for frontier AI labs, seeks engineers to design, build, and refine RL tasks. You will own the full lifecycle from ideation to grading and iteration, tackling multi-step workflows, large codebases, and real stakeholder interactions.

You will guide coding agents, evaluate outputs, and contribute to shared infrastructure. You should bring deep software engineering experience across domains and strong Python

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Position Requirements
10+ Years work experience
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