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IdlerIdlerSan Francisco, CA

Senior Software Engineer

Designs and builds scalable agentic systems for generating and QA'ing reinforcement learning environments that teach AI models to code. Collaborates with AI researchers using TypeScript, React, NodeJS stack in a tight-knit founding team.

180k – 280k/yr
On-siteML Engineering

About the role

Responsibilities

  • Design and build scalable systems that generate RL environments
  • Create automated QA systems to validate environment quality and fairness
  • Work directly with AI researchers at leading labs to understand what makes training data effective
  • Support new product lines as we expand beyond coding environments

Requirements

  • Build agentic systems that create and QA coding environments at scale
  • High agency and philosophical thinking alongside technical execution

Tech Stack

  • TypeScript
  • React
  • NodeJS
  • Postgres
  • Redis
  • Vercel
  • Cursor

Benefits

  • Healthcare coverage
  • 401(k)
  • 15 days PTO
  • Meals, coffee, and snacks during working days
  • Latest MacBook Pro and equipment
  • Relocation assistance
  • Team offsites and events

Skills

TypeScriptReactNode.jsPostgresRedisVercelCursorReinforcement LearningRl EnvironmentsAi Systems

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