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Principal Cybersecurity Engineer, Telco

3 Locations💼 Full-time💰 $127,800–$127,800🗓 2026-06-29 → 2026-07-30

Core

Securing critical telecommunications technologies including 3GPP standards, IMS, packet core, messaging, e911, and 5G networks using zero-trust architecture and advanced threat detection.

Role type

Principal Cybersecurity Engineer (Telecommunications)

Builds

Secure enterprise applications, IoT, mobile devices, and next-generation networks for T-Mobile.

Domain

Telecommunications / Cybersecurity

Deliverable

production ML models | product features | infrastructure

Required skills

3GPP standards, 5G architecture, IMS core, packet core security, Artificial Intelligence, Cybersecurity, Escalation Management, Security Automation, Security Engineering, Security Incident Management, Threat Modeling

Preferred skills

CISSP, CISM, CRISC

Technologies

3GPP, 5G, IMS, LTE, EPC, UPF, Diameter, SIP, HTTP/2

Responsibilities

Conduct security assessments, code reviews, and vulnerability testing; Develop proactive security measures and strategies; Collaborate with engineering teams to integrate security practices; Serve as a subject matter expert providing guidance and leadership; Ensure security of 3GPP-compliant systems; Evaluate new technologies for vulnerabilities; Develop cybersecurity solutions for packet core infrastructure; Drive strategic security initiatives; Lead security design for critical services like e911, VoLTE, RCS, and SMS/MMS; Secure signaling protocols and mitigate risks like signaling fraud and DoS attacks.

Seniority

Principal, hands-on IC with strategic leadership

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