Senior Security Tester (Penetration Testing)

We are seeking a research-minded Senior Security Tester who sits at the intersection of three disciplines: operational technology (OT/ICS) security, exploit development and zero-day discovery, and offensive testing of AI and agentic systems. This is not a scanner-driven role — you will break real industrial environments safely, write working exploits for vulnerabilities you find yourself, and attack LLM applications and autonomous agents the way a capable adversary would. You will deliver client engagements end-to-end, contribute original research to the customer's zero-day program, and help build the AI-driven tooling that scales our offensive capability.

Responsibilities

• Plan and execute safety-first penetration tests of OT/ICS environments (water and wastewater, energy, manufacturing, building systems), including passive asset discovery, Purdue-model segmentation testing and IT-to-OT pivot analysis
• Assess PLCs, RTUs, HMIs, SCADA