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This job expired on 01/09/2026. It no longer accepts applications.
Telco Cyber Security Specialist
Vodacom · Kinshasa
Job description
About the role
We are seeking a skilled Telco Cyber Security Specialist to protect our mobile and IP network infrastructure from cyber threats, unauthorized access, service disruptions, and data breaches. The role covers security for voice, data, wireless, internet, and enterprise communication systems across 2G/3G/4G/5G environments.
Key responsibilities
- Conduct regular network vulnerability assessments and implement remediation strategies.
- Monitor network traffic for anomalies and respond to security incidents.
- Participate in network security drive‑tests and develop security policies for mobile and IP networks.
- Lead incident‑response efforts for breaches affecting telecom and IP services.
- Assess risks of new technologies, services, and third‑party vendors.
- Collaborate with technology teams to integrate and maintain security controls.
- Deliver training on mobile and network security best practices.
- Stay current on cybersecurity trends and recommend infrastructure enhancements.
- Review and approve firewall rule changes and communication matrices.
- Prepare management reports on incidents, vulnerabilities, and firewall posture.
Required profile
- 3‑5 years of experience in mobile network security.
- Bachelor’s degree in Computer Science, Telecommunications, IT, Cybersecurity or a related field.
- Relevant certifications such as CISSP, CISM, or equivalent.
- Strong understanding of 2G/3G/4G/5G core components and signaling security (SS7, Diameter, SIP).
- Experience with security of RAN, back‑haul, VoLTE/VoWi‑Fi, and network slicing.
Required skills
- Core IP protocols: IPv4, IPv6, ICMP, ARP, DNS, DHCP.
- Routing & control: OSPF, BGP, EIGRP, RIP, VRRP, HSRP, GLBP, MPLS.
- Transport & session: TCP, UDP, TLS/SSL, DTLS.
- Network management: SNMP, Syslog, NetFlow/IPFIX, NTP.
- Remote access: SSH, RDP, VNC, HTTP/HTTPS.
- Email protocols: SMTP, POP, IMAP.
- Directory services: LDAP, Kerberos, NTLM, SAML.
- File transfer: FTPS/SFTP, TFTP, SMB, NFS.
- VPN & tunneling: IPsec, GRE, L2TP, PPTP, SSL/TLS.
- Authentication: RADIUS, TACACS+, OAuth2/OpenID Connect.
- Voice & media: SIP, RTP, MGCP, SRTP.
- Mobile core components: MSC, SGSN, GGSN, MME, HSS, PCRF, AMF, SMF, UPF, eNodeB/GNodeB.
- Signaling security: SS7, Diameter, SIP firewalls.
- SIM/identity management: SIM provisioning, IMSI/IMEI, EAP‑AKA, USIM, eSIM lifecycle.
- 5G/LTE security: SA/NSA, SBA, SEPP, network slicing, virtualization risks.
- RAN security: back‑haul encryption, physical site protection.
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Vodacom
Kinshasa