Proliferate, the Y Combinator S25 startup, is hiring founding engineers to build its AI-powered engineering platform. The company aims to create an operating system where humans and coding agents collaborate, automating software development while maintaining human oversight. Engineers will work directly with the team in San Francisco on high-ownership roles spanning product, systems, and user experience.

The startup offers a unique vision for software automation, avoiding the "agents replacing engineers" approach. Instead, Proliferate focuses on enhancing engineer capabilities through agents that can take action, maintain context, and work in realistic environments. The company provides competitive compensation with top-of-market salaries, meaningful equity, and comprehensive benefits including health coverage, meals, and wellness stipends.

Candidates for the founding engineering roles should have experience shipping products from 0 to 1 and desire an unusually dense learning environment. The team values urgency, taste, truth-seeking, and high standards. Proliferate's tech stack includes TypeScript, React, Next.js, Python, Postgres, Redis, AWS, and Rust, indicating a focus on modern web development with AI integration.