Telco and Network Security SME

Tata Elxsi; Chennai, Bengaluru; On-site; INR 3,200,000 - 5,200,000; Full time

Job summary

Tata Elxsi, Inc. is seeking an experienced Cybersecurity Lead with deep Telco security expertise in Chennai, India.

You will guide the security posture of telecom infrastructure, including mobile networks and cloud-based services, and drive risk assessments, threat modeling, and incident response. You will collaborate with cross-functional teams to implement SDN/NFV security, ensure regulatory compliance, and mentor a growing cybersecurity team.

Qualifications

• 8-10 years of cybersecurity experience with 4-6 years in telecom security.
• Strong grasp of telecom architectures, protocols (SS7, Diameter, SIP, GTP), and threats.
• Experience with major vendors (Ericsson, Nokia, Huawei, Cisco) and security tools (firewalls, SIEM).
• Knowledge of 5G core, edge computing, and cloud-native telecom architectures.
• Certifications such as CISSP, CISM, CCSP, CEH, GIAC or GSMA Security preferred.

Responsibilities

• Design, implement, and govern cybersecurity controls for telecom infrastructure (4G/5G).
• Work with SDN, NFV, and cloud-based telecom services.
• Develop Telco-specific cybersecurity strategy aligned with standards (NIST, ISO 27011, GSMA).
• Configure and manage firewalls, VPNs, IDS/IPS, and encryption tech.
• Conduct risk assessments, threat modeling, and vulnerability management.
• Use data analytics for network monitoring and anomaly detection.
• Implement cloud security measures for telecom modernization (AWS, Azure).
• Collaborate to ensure secure deployment of NFV, SDN, MEC, and 5G slicing.
• Lead incident response for telecom threats (SS7/SIGTRAN, SIM swap, DDoS).
• Ensure GDPR and local data privacy and telecom regulatory compliance.
• Mentor a cybersecurity team and engage with vendors/regulators.

Skills

Cybersecurity leadership

Telecom security

Regulatory compliance

Risk assessment

Education

Bachelor's or Master's in Cybersecurity/CS/Telecom

Tools

Firewalls

SIEM

Endpoint protection

Cloud security

Job description

Tata Elxsi offers comprehensive services in Media and Communications, including research, strategy, design, software development, validation, and deployment. With our global presence and deep expertise, we specialize in 5G services, Edge computing, and connectivity solutions.

We are looking for an experienced and strategic Cybersecurity Lead with deep expertise in Telecommunications (Telco) Security to strengthen our security posture across critical Telco infrastructure and services. The ideal candidate should have hands‑on experience in 5G/4G network security, telecom systems, and regulatory compliance, along with proven leadership in managing cross‑functional cybersecurity initiatives.

Key Responsibilities:

• Design, implement, and govern cybersecurity controls for telecom infrastructure including mobile networks (4G/5G), fixed‑line, core, and edge systems.
• Work with emerging paradigms such as Software Defined Networking (SDN), Network Function Virtualization (NFV), and cloud‑based telecom services.
• Develop and maintain the Telco‑specific cybersecurity strategy and roadmap aligned with business goals and global standards (NIST, ISO 27011, GSMA, ENISA).
• Configure and manage firewalls, VPNs, IDS/IPS, and encryption technologies to protect telecom data.
• Conduct risk assessments, threat modeling, and vulnerability management for telecom systems.
• Use data analytics tools for network monitoring and anomaly detection to strengthen network defense.
• Implement cloud security measures for telecom modernization (AWS, Azure, hybrid environments).
• Collaborate with internal teams to ensure secure deployment of NFV, SDN, MEC, and 5G slicing.
• Lead incident response for telecom‑related threats (SS7/SIGTRAN, SIM swap, DDoS, etc.).
• Ensure regulatory compliance with GDPR, local data privacy laws, and telecom mandates.
• Manage and mentor a cybersecurity team; collaborate with vendors, regulators, and government agencies.
• Stay updated on emerging threats, vulnerabilities, and technologies in the telecom sector.

Required Qualifications:

• Bachelor's or Master's in Cybersecurity, Computer Science, Telecommunications, or related fields.
• 8-10 years of experience in cybersecurity, with 4-6 years focused on telecom security.
• Strong understanding of telecom architectures, protocols (SS7, Diameter, SIP, GTP), and associated threats.
• Experience with telecom vendors (Ericsson, Nokia, Huawei, Cisco) and security solutions (firewalls, SIEM, endpoint protection).
• Knowledge of 5G core, edge computing, and cloud‑native telecom architectures.
• Expertise in security testing, adversary simulation, and risk evaluation.
• Experience with ISO/IEC 27011, NIS Directive, GSMA NESAS, and other telecom regulations.
• Relevant certifications such as CISSP, CISM, CCSP, CEH, GIAC, or GSMA Security preferred.

Nice to Have:

• Experience in security automation (SOAR) and Zero Trust architectures.
• Familiarity with AI/ML‑based telecom threat detection.
• Strong leadership, communication, and project management skills.
• Ability to handle high‑pressure security incidents with analytical thinking.