Junior Software Engineer
Mechanize, Inc.· Engineering
San Francisco$300kFull-timePosted 10mo ago
About the role
Junior Software Engineer responsible for designing, building, and refining reinforcement learning tasks and the infrastructure to evaluate frontier AI coding models.
Responsibilities
- Design, build, and refine RL tasks. Each task is a self-contained software engineering challenge with a prompt, an environment, and an automated grader.
- Own the full lifecycle: ideation, implementing the grading infrastructure, running frontier models against the task, analyzing failure points, and iterating until rigorous and fair results.
- Direct and manage coding agents; evaluate their outputs, guide them effectively, and identify subtle failures in models or graders.
Qualifications
- Have just graduated or are about to graduate
- Can code in Python
- Are confident working independently
- Are motivated by problems that require both technical skill and creative cleverness
- No prior ML or AI experience required
Skills
Required:PythonIndependent work
Benefits
- health, dental, vision, and life insurance
Last updated Sep 2, 2026. Interested? Apply on the company site.
About Mechanize, Inc.
We are a software company that builds RL environments and sells them to the leading AI labs.
Mechanize is a software company that builds RL environments and sells them to the leading AI labs.
AIRL environmentsautomationbessemer-ai-infrastructure-2026reinforcement-learning-platformssoftware
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