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Telecom / ISPExploitation Engineer

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, NSA, USCYBERCOM, Anduril, 8200, and the Mossad. Soon live with the U.S. Department of War and close U.S. allies abroad.

APPLIED AIREVRERICSSONHUAWEINOKIAZTE
Doc // ZL.SUR.TELE
Rev // 2026.04
Classification // OPEN

§What You'll Do

  • Build AI systems that find and exploit vulnerabilities in carrier-grade telecom and ISP infrastructure: core routers, BRAS/BNG, GPON/EPON, DSLAM, CMTS, and mobile packet core.
  • Reverse engineer firmware and management planes on equipment from Nokia, Ericsson, Huawei, ZTE, Calix, and similar vendors to train models that generalize across platforms.
  • Target subscriber-edge infrastructure (BRAS, BNG, AAA systems, and RADIUS/DIAMETER stacks) where authentication, session control, and policy enforcement converge.
  • Develop AI-driven tooling that discovers attack paths through SS7, GTP, DIAMETER, and carrier routing infrastructure at scale.
  • Turn deep telecom domain knowledge into the systems and data that let machines operate at the backbone level autonomously.

§Requirements

  • Strong experience with telecom or ISP infrastructure security: core networks, access networks, or carrier routing.
  • Familiarity with carrier-grade platforms: Cisco IOS-XR, Juniper Junos, Nokia SR OS, Huawei VRP, or similar.
  • Understanding of telecom protocols: SS7/SIGTRAN, GTP, DIAMETER, RADIUS, MPLS, BGP at carrier scale, GPON/EPON.
  • Experience reverse engineering network equipment firmware or proprietary network operating systems.
  • Strong C/C++ or Python skills for tooling and exploit development.

§Nice to Have

  • Experience with mobile core network elements (MME, SGW, PGW, HSS, or 5G equivalents).
  • Familiarity with BRAS/BNG, DSLAM, CMTS, OLT, or other access and subscriber-edge network equipment.
  • Published CVEs or advisories against telecom or ISP equipment vendors.
  • Experience with TR-069/CWMP, NETCONF/YANG, RADIUS/DIAMETER AAA, or carrier management protocols.
  • Experience building with LLMs and AI agents.
  • Background in CNO, SIGINT, or government telecom operations.

§You Are

  • 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.
For Recruiters

Note to recruiting firms: Telecom or ISP infrastructure security experience is the core requirement. Carrier-grade routing, mobile core, or access network experience is essential. Candidates from telco vendor security teams, CNO backgrounds, or ISP engineering are ideal.

Ready?

Apply for Telecom / ISP Exploitation Engineer

Email team@zealotlabs.com with a resume and a paragraph on what you want to build with us.

Apply now

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