Explore Proliferate (formerly Keystone) careers and hiring status. Find jobs at Proliferate (formerly Keystone) and official application links when roles are open. Funding stage: Seed. Headcount: 1-10. Proliferate (formerly Keystone) is an open-source IDE for running multiple AI coding agents (Claude Code, Codex, Gemini, etc.) in isolated cloud sandboxes, originally launched as an autonomous on-call AI engineer that triages and fixes production bugs. Founded in 2025 by Pablo Hansen and part of YC Summer 2025.
This page summarizes open roles, company profile signals, and official application paths so candidates can quickly evaluate fit before applying. Use the role list below to identify team focus, review location patterns, and jump to source listings. For broader comparison across the market, continue to the full company directory and jobs explorer.
Proliferate (formerly Keystone) is a Seed stage AI startup, founded in 2025, with $500K in total disclosed funding. Its most recent round was a $500K Seed in Sep 2025. It has no open roles listed at the moment; new Proliferate (formerly Keystone) openings are tracked daily. Source: Fast AI Jobs company dataset, updated Sep 2026.
Company profile last updated on Sep 8, 2026.
Proliferate (formerly Keystone) careers and hiring status: no open roles are currently listed here, but you can review the company profile and check the official career page for the latest openings. Official careers page
Proliferate (formerly Keystone) is an developer tools company. Proliferate (formerly Keystone) is an open-source IDE for running multiple AI coding agents (Claude Code, Codex, Gemini, etc.) in isolated cloud sandboxes, originally launched as an autonomous on-call AI engineer that triages and fixes production bugs. Founded in 2025 by Pablo Hansen and part of YC Summer 2025.
Open positions
Check the official career page, browse adjacent companies, or subscribe for new openings.
Candidate questions
Proliferate (formerly Keystone) is an open-source IDE for running multiple AI coding agents (Claude Code, Codex, Gemini, etc.) in isolated cloud sandboxes, originally launched as an autonomous on-call AI engineer that triages and fixes production bugs. Founded in 2025 by Pablo Hansen and part of YC Summer 2025.
Proliferate (formerly Keystone) does not have open roles listed on our platform right now. Visit the official company website or career page for the latest openings, or subscribe to get notified when new roles are posted.
Proliferate (formerly Keystone) has raised $500K in total. The latest known stage is Seed.
Proliferate (formerly Keystone) reports an employee count of 1-10.
Proliferate (formerly Keystone) was founded in 2025.
Proliferate (formerly Keystone) is associated with Agents, Developer Tools, DevOps, Generative AI, Machine Learning, Infrastructure, and other related technologies.
Company context
Proliferate (formerly Keystone) is a Seed stage AI startup, founded in 2025, with $500K in total disclosed funding. Its most recent round was a $500K Seed in Sep 2025. It has no open roles listed at the moment; new Proliferate (formerly Keystone) openings are tracked daily. Source: Fast AI Jobs company dataset, updated Sep 2026.