Novelus

Core Network Security Engineer (Signaling & Roaming)

📍 Location
Remote, Remote
⏰ Job Type
Full-time
📅 Posted
June 03, 2026
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Job Description

Overview

Design and implement signaling-security controls (SS7/Diameter/SIP) to reduce roaming exposure, fraud risk, and attacks, delivering evidence and operational handover to SOC/NOC.

Responsibilities

  • Define signaling-security architecture and baseline policy/rule sets (permit/deny, anomalies, rate limits)
  • Analyze roaming vulnerabilities and risks; design mitigations and validate effectiveness
  • Coordinate security tests (abuse cases, simulations) and fine-tune rules to minimize false positives
  • Integrate events/telemetry with monitoring/SIEM platforms and define actionable alerts
  • Develop MOPs with rollback and operational runbooks for the security team
  • Support cutovers and post-implementation validations (hardening, route verification)

Requirements (Must-Have)

  • Strong practical experience in SS7, Diameter, and/or SIP in telecom environment
  • Experience in ro...

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