Telecom Security Engineer (2G/3G/4G/5G networks, RAN, EPC/5G Core, IMS/VoLTE)

October 19, 2026

Telecom Security Engineer Location : Noida Employement Type : Contract Salary : Pay will be on hourly basis Job Summary We are looking for a Telecom Security Engineer with strong hands-on knowledge of 2G/3G/4G/5G networks, RAN, EPC/5G Core, IMS/VoLTE, telecom signaling protocols, and telecom security. The candidate should understand telecom network elements, their security requirements, and logging capabilities. The role will work closely with Telecom Network/OEM, Cybersecurity, SOC, and SIEM teams to enable centralized security monitoring of telecom infrastructure. Role positioning: SIEM knowledge is highly preferred; however, the primary requirement is strong Telecom domain expertise with an understanding of security monitoring and log integration. Key Responsibilities <ul><li> Understand end-to-end 2G/3G/4G/5G architecture, including RAN, EPC, 5G Core, IMS/VoLTE, and OSS/BSS.</li><li> Work with telecom network elements including HLR, HSS, MSC, MME, SGW, PGW, AMF, SMF, UPF, PCRF/PCF, SBC, and IMS components.</li><li> Apply knowledge of SS7, Diameter, GTP, SIP, and 5G Core/SBA protocols.</li><li> Assess telecom security threats and vulnerabilities across Core, RAN, IMS, signaling, roaming, and interconnect environments.</li><li> Identify security-relevant logs and events generated by telecom network elements and applications.</li><li> Coordinate with OEM/vendor teams to enable appropriate security logging on telecom devices.</li><li> Support onboarding of telecom devices and applications into the SIEM platform.</li><li> Coordinate connectivity, routing, firewall, and log-forwarding prerequisites with relevant teams.</li><li> Work with SIEM engineers on log validation, parsing, normalization, field mapping, and integration troubleshooting.</li><li> Identify security-logging gaps and support remediation of missing, delayed, or incorrectly parsed events.</li><li> Assist SOC/SIEM teams in defining telecom-specific security monitoring and detection use cases.</li><li> Maintain telecom device inventory, logging requirements, integration details, and supporting technical documentation. </li></ul>Mandatory Skills <ul><li> Strong understanding of 4G LTE and 5G architecture, including EPC and 5G Core.</li><li> Knowledge of RAN architecture, IMS/VoLTE, and major Telecom Core network elements.</li><li> Strong working knowledge of SS7, Diameter, GTP, and SIP.</li><li> Understanding of telecom signaling security, network security, and security events.</li><li> Hands-on telecom device and network troubleshooting experience.</li><li> Knowledge of IP networking, TCP/IP, routing, DNS, and firewall fundamentals.</li><li> Understanding of telecom network-element logs and device logging capabilities.</li><li> Ability to collaborate across Telecom Network, OEM, Cybersecurity, SOC, and SIEM teams. </li></ul>SIEM Knowledge - Highly Preferred The candidate does not need to be a dedicated SIEM administrator, but should preferably understand: <ul><li> SIEM architecture and security-monitoring concepts.</li><li> Telecom log-source onboarding and log collection/forwarding.</li><li> Syslog and API-based integration concepts.</li><li> Log parsing, normalization, validation, and security-event field mapping.</li><li> Log-integration troubleshooting and data-quality validation.</li><li> SIEM correlation, detection-use-case requirements, and SOC monitoring needs.</li><li> Working knowledge of Splunk, Microsoft Sentinel, QRadar, FortiSIEM, or an equivalent SIEM platform. </li></ul>Preferred OEM Experience Ericsson | Nokia | Huawei | Cisco | Mavenir | Oracle Preferred Qualifications <ul><li> Bachelor's degree in Telecommunications, Electronics, Computer Science, IT, Cybersecurity, or an equivalent discipline.</li><li> 5-10 years of relevant Telecom or Telecom Security experience.</li><li> Experience in Telecom Core, Network Security, Telecom SOC, or security-monitoring environments.</li><li> Telecom 4G/5G, networking, cybersecurity, or SIEM-related certifications are advantageous. </li></ul>Skills: telecom,4g,integration,security,siem,soc

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