Telecom / ISP Exploitation 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, and Anduril. Soon live with close U.S. allies abroad. APPLIED AI RE VR ERICSSON HUAWEI NOKIA ZTECompensation 100K-195K + skin in the game equity Location New York, NY On Site Stage Early-stage startup backed by tier 1 investors. Small, growing team with exceptionally high ownership.+ 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.+ 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.+ 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: 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?