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Make the world's AI systems more reliable

Citadel AI builds products to test and monitor the quality of AI systems. Our mission is to make the world’s AI systems more reliable and trustworthy.


Our company is located in Tokyo, but we have an international team and global customers. We’re building a world-class engineering team here – our engineers have previously worked at leading tech companies including Google, Waymo, PayPal, Stripe, Apple, and Toyota.


This is a unique opportunity to build new products for a global market from Tokyo. As an early engineer at Citadel AI, you’ll have significant impact and ownership over our startup’s trajectory. We’re well funded and backed by the best investors in Japan: The University of Tokyo, Coral Capital, ANRI, Mitsubishi UFJ Capital, and more.

Open Roles

Currently, we’re not actively hiring for specific roles, but we’re always looking for talented individuals to help build the future of Citadel AI.

If you’re interested in joining our team, please submit your resume and a brief note on what role you’d be a great fit for here.

(For reference, here are a few of our past openings: Backend Engineer, Frontend Engineer, Computer Vision Engineer, DevOps Engineer.)

Open Roles

Computer Vision Engineer
Backend Engineer
Frontend Engineer
DevOps Engineer