Software Engineering Intern

The role

You will design, build, and refine RL tasks. You will own the full lifecycle of creating software engineering challenges, implementing grading infrastructure, and analyzing model failures.

What you will do

• Design, build, and refine RL tasks
• Implement grading infrastructure
• Run frontier models against tasks
• Analyze where and why models fail
• Iterate until tasks are rigorous and fair
• Use coding agents heavily
• Direct coding agents and evaluate their output

Required qualifications

• Graduating in 2026 or 2027
• Can code in Python
• Confident working independently
• Motivated by problems that require both technical skill and creative cleverness

Nice to have

• Candidates who have spent significant time working with frontier coding agents

Benefits

• 401k
• health
• dental
• vision
• life insurance

About the company

Mechanize is a ~20 person team in San Francisco that builds reinforcement learning environments for frontier AI labs to train and evaluate coding models.