Zealot is deploying AI systems at the center of western cyber operations , backed by tier-1 US VCs and industry leaders. Our team includes alumni of Anthropic, xAI, and Anduril. Soon live with close U.S. allies abroad.
APPLIED AI RE VR SIEMENS SCHNEIDER ABB
Compensation 100K-195K + skin in the game equity
Location London, United Kingdom On Site
Stage Early-stage startup backed by tier 1 investors. Small, growing team with exceptionally high ownership.
- + Build AI-driven systems that discover vulnerabilities in SCADA/ICS environments (PLCs, RTUs, HMIs) and gain access at scale.
- + Reverse engineer proprietary industrial protocols and control system firmware to feed the models that find the next entry point.
- + Develop the AI tooling that bridges IT/OT boundaries at scale, not one target at a time, but across entire classes of industrial systems.
- + Turn your deep IC knowledge into training data, heuristics, and system understanding that makes machines as good at finding access as you are.
- + Strong experience with SCADA/ICS vulnerability research and exploit development focused on gaining access.
- + Familiarity with industrial protocols: Modbus, DNP3, OPC-UA, EtherNet/IP, IEC 61850.
- + Experience reverse engineering PLC firmware (Siemens, Allen-Bradley, Schneider, ABB).
- + Understanding of OT network architectures, Purdue model segmentation, and IT/OT boundary weaknesses.
- + Strong C/C++ or Python skills for tooling and exploit development.
Nice to Have
- + Published CVEs or advisories against IC/SCADA products.
- + Experience with HMI security (WinCC, FactoryTalk, Ignition).
- + Familiarity with safety instrumented systems (SIS) and their attack surfaces.
- + Experience with IC-specific fuzzing and protocol analysis tools.
- + Experience building with LLMs and AI agents.
- + Background in red team operations against critical infrastructure.
- + Motivated by the challenge of breaking into the systems that run critical infrastructure.
- + Clearly interested in stepping away from purely manual research and moving toward the development of AI systems.
- + Building something massive matters more to you than comfort, titles, or predictability.
- + You want to be early at a company that will change an industry, and you're ready to do what that actually takes.
Note to recruiting firms: SCADA/ICS vulnerability research focused on gaining access is the core requirement. This role is about finding and exploiting entry points, not effects delivery. Industrial protocol and PLC reversing experience are essential.
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SCADA / ICS Security Engineer APPLIED AI RE VR SIEMENS SCHNEIDER ABB New York, NY / On Site → employer: Zealot Labs, Inc.
Zealot is an exceptional employer for Solutions Engineers, offering a dynamic and innovative work environment where you can directly impact the deployment of cutting-edge AI-driven cyber systems. With a competitive compensation package and equity options, employees enjoy a culture of high ownership within a small, growing team that values collaboration and personal growth. The hybrid work model allows for flexibility while providing opportunities to engage with customers across the UK and Europe, making it a rewarding place for those looking to advance their careers in a meaningful way.
