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Yettel Bulgaria

Senior Telecom and Network Security Expert

SofiaPosted 2 weeks ago
Full-timesenior

Job Description

  • Design and implement security architecture across 2G/3G, 4G EPC, and 5G (NSA/SA).
  • Lead security governance across 5G Core (AMF, SMF, UPF, PCF, NRF, AUSF, UDM), VAS platforms, Open/vRAN, Edge/MEC, IMS, interconnect/roaming, and API layers.
  • Embed Secure-by-Design and Zero Trust principles, ensuring authentication, micro-segmentation, API security, signaling protection, inter-slice isolation, and secure service-to-service communication.
  • Support telecom and cloud transformation initiatives from design to operational acceptance, following ENISA, 3GPP, GSMA, ETSI, NIS2, and EU 5G Security Toolbox guidelines.
  • Conduct threat modeling, risk assessments, and attack surface analysis, including supply chain and high-risk vendor evaluation.
  • Ensure compliance with telecom and cybersecurity standards, emphasizing resilience, availability, and incident reporting.
  • Develop cloud-native hardening standards, container security baselines, API security guidelines, and resilience controls for distributed and edge deployments.
  • Support audits, vulnerability assessments, penetration testing, and security reviews.
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    1001-5000 employees
    Sofia, Sofia, BG
    Website
    Senior Telecom and Network Security Expert at Yettel Bulgaria | Renata