RL environments Jobs - March 2026

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Mechanize

Senior SWE

Posted 3 months, 2 weeks ago

Mechanize builds RL environments that frontier AI labs use to train their models on real-world software engineering. Team of ~20. High demand and hiring quickly. Backed by Nat Friedman, Daniel Gross, and Patrick Collison. Applying takes <2 min: https://jobs.a…

Roles

Senior SWE Junior SWE

Tech stack

Reinforcement Learning AI Software Engineering RL environments Machine Learning

Location

San Francisco, CA

Compensation

Junior SWE ($250k + equity), Senior SWE ($375k + equity)
Surge AI

Software Engineer (full-stack/product)

Posted 7 months, 2 weeks ago

Surge AI is hiring senior engineers and other roles to build human infrastructure for AI and LLMs. They operate a large human data platform and work on RL environments, agentic workflows, and RLHF data collection (examples: GSM8K dataset, Anthropic Claude RLH…

Roles

Software Engineer (full-stack/product) Strategic Project Lead

Tech stack

RLHF Data collection Large Language Models (LLMs) Dataset construction RL environments Agentic workflows Machine Learning Full-stack development

Location

San Francisco, New York City, Remote