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 roaming/fra...