About Patronus AI

Patronus AI is a frontier lab developing simulation research and infrastructure to accelerate progress toward human-aligned AGI. We are on a mission to simulate all of the world’s intelligence.

We are the team behind some of the earliest and most influential research in AI evaluation like FinanceBench, Lynx, SimpleSafetyTests, CopyrightCatcher, Humanity’s Last Exam, and more. We are formerly AI researchers and engineers from companies like Meta AI, Amazon AGI, and Google. Our customers include foundation model labs and Fortune 500 enterprises like Adobe. We are backed by top-tier investors like Lightspeed Venture Partners, Notable Capital, Stanford University, Noam Brown, Gokul Rajaram, and more.

Responsibilities

As an Engineer at Patronus AI, you will build high-quality simulations used to train, evaluate, and improve AI agents. These environments model real-world applications and workflows, producing the interaction data frontier labs need to improve their models.

You will own complex agent environments end-to-end,



working with Applied Researchers to turn specifications into robust software, subject-matter experts to deepen realism, and platform engineers to improve the tooling we build on.

Your work will help frontier labs stress-test and improve the next generation of AI agents, advancing progress toward protected, human-aligned general intelligence.

In this role, you will:

• Build RL environments end-to-end — frontend interfaces, backend services, APIs, data models, and workflows — using technologies like React/TypeScript, Next.js, Python, and SQLite.

• Own delivery of the environments, working closely with Applied Researchers, subject-matter experts, and QA specialists to ensure our simulations are realistic and recognize when something feels wrong in a simulation. Catch seed data that is suspiciously tidy, a workflow with no contradictions, or a UI with none of the accumulated scar tissue of real software.

• Maintain a high bar for the

📌 Member of Technical Staff (India)
🏢 Patronus AI
📍 India