About Tenzai

Tenzai is building autonomous AI hackers that think like the world's best offensive security experts, act like them, and then help fix what they find before the real ones do. If this mission speaks to you, come defend the world's software: autonomously, continuously, and in-depth.

About the role

This is a rare opportunity to work at the intersection of offensive security and AI — and to have your expertise shape a platform used at enterprise scale. Your work will be deployed and used to hack into applications and systems in the real world.

• Build Tenzai’s Agent Harness - continuously deliver high impact features to improve the Tenzai Agent Harness - knowledge management. Context engineering and agentic tooling.
• Develop Data Systems for AI Memory - Build storage, retrieval and reasoning systems to enable agents to effectively use external knowledge and improve over time.
• Work on Experimentation and Evaluation Systems - Evals are key to everything we do, in this role you will build evaluation pipelines, design and build experiments and simulations.
• Working with Researchers and Scientists to deliver measurable improvements - repeatedly and consistently.

• Strong understanding of modern LLMs, including training, fine-tuning, and inference, with hands-on experience deploying LLM-based systems in production.
• Have built an agent, hands on. Experience with complex loops, context engineering, and long executions tooling.
• 5+ years of hands-on programming experience in Python or other backend languages. Strong fundamentals in system design, performance, and debugging.
• Experience in data systems, data modelling (databases, pipelines etc).
• Real world experience running experiments, measuring and iterating.
• Advanced Degree, research experience- An advantage
• Good understanding of modern, AI driven software development- An advantage