Signaling Security Specialist (REF5226T)

Signaling Security Specialist responsible for security and fraud monitoring in telecom signaling. Tasks include conception of security and fraud anomaly monitoring, detection, analyses and mitigation of attacks, conception and implementation of countermeasures, coordination with stakeholders, and development of security policy focusing on signaling threats. Responsibilities also cover configuration of new detection filters, analysis of alerts, discussing findings with stakeholders and implementing countermeasures, and evaluating new telecom signaling and signaling-based fraud scenarios. Requires very good written and spoken English (C1) and good German (min. B2) with expertise in signaling protocols (SS7, Diameter, GTP, 5G HTTP2, SIP), knowledge of operational mobile and roaming services, experience in anomaly detection and fraud management solutions, and strong analytical and problem-solving skills. Willingness to pass privacy, security and risk management training and maintain high confidentiality. Remote work is available only within Hungary; hybrid arrangement in Budapest, Debrecen, Pécs, and Szeged.