Senior Software Engineer (Agentic Coding RL Environments)

Surge AI partners with the world's leading AI labs to build the benchmarks and RL environments that train and evaluate frontier models. They are seeking a Senior Software Engineer to build coding RL environments and benchmarks, design tasks based on real engineering work, and provide feedback to improve future models.

Responsibilities:

• Build coding RL environments and benchmarks that test how agents perform on realistic software engineering tasks
• Design tasks based on real engineering work
• Review and red-team model output to surface meaningful failures
• Write the tests, rubrics, and success criteria that separate good work from slop
• Give structured feedback that improves future models

Requirements:

• Professional software engineering experience shipping real, scaled production systems
• Expertise in at least one common tech stack (TypeScript, Python, Ruby, PHP, Java, Rust, Go, or C++)
• Strong judgment about what 'good code' and a 'meaningful model failure' look like
• Comfort working independently, and giving direct, code-review-style feedback
• Availability for a meaningful commitment (most contributors work 20 to 40+ hours per week)