Senior Software Engineer (AI)

TL;DR

Senior Software Engineer (AI): Designing and building reinforcement learning environments for frontier AI labs to train coding models with an accent on complex workflows and system design. Focus on creating high-complexity tasks involving large codebases and evaluating AI agent behavior to identify subtle capability gaps.

Location: San Francisco, USA

Salary: $400,000 base + Equity + Bonus

Company

hirify.global builds reinforcement learning environments that frontier AI labs use to train and evaluate their coding models.

What you will do

• Design, build, and refine RL tasks from ideation through grading and iteration.
• Develop complex environments involving multi-step workflows and large codebases with real-world technical debt.
• Direct and evaluate coding agents to identify subtle failure modes and capability gaps.
• Contribute to shared infrastructure and tooling for the team.
• Provide mentorship and guidance to newer team members.

Requirements

• Deep software engineering experience across multiple domains.
• Proficiency in Python.
• Extensive experience working with coding agents.
• Ability to work independently on complex and ambiguous problems.
• Strong intuition for AI model behavior, specifically in areas like infrastructure, distributed systems, or security.

Culture & Benefits

• High-ownership environment with direct impact and regular feedback.
• Rapid recognition and promotion tracks for strong performers.
• Comprehensive health, dental, vision, and life insurance.
• Backed by high-profile investors and industry leaders.