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Engineer, Mobile Security Operations

Singapore Telecommunications Limited

D19 Hougang, Sengkang, Serangoon Garden, PunggolPermanentS$4,500 – S$6,500/mo

Posted 15 Jul 2026

About this role

Responsible for supporting the daily operation of Mobile Network Security system. Install, configure, troubleshoot, and maintain security systems. Identifying potential vulnerabilities and implementing security measures Maintaining up-to-date knowledge of the latest cyber threats, vulnerabilities, and security systems Support Networks audits to ensure that systems and networks are operating securely Work with all stakeholders to meet operation and cyber security requirements. Lead to conduct regular Network cybersecurity exercise. Activate and perform disaster recovery plan in times of service disruptions so as to minimize service downtime and revenue loss. Develop cybersecurity playbooks, business continuity plan and Incident Response plan. Responsible for coordinating Network Vulnerability Assessment and Penetration Testing (VAPT) Review and program manage the mitigation of VAPT findings. May require working outside normal working hours to carry out upgrades and patch loading as such activities may disrupt services. Engage with vendor’s support to diagnose and rectify technical problems. Identifying automation use cases in the area of network security. System administrator for Mobile Security systems Provisioning and deprovisioning of Mobile network 2FA and PIAM accounts. Skills for success: Willingness to work outside of normal working hours Degree in Engineering majoring in Computer Science, IP networking or Telecommunications/Mobile Communication. Good to have certifications in Automation, Networking (i.e. CCNA/CCNP) & Network Security. Basic knowledge in Cybersecurity fundamentals, NIST cybersecurity framework. Basic knowledge in Linux Operating System. Ability to communicate and conduct presentation effectively in both verbal and written English. Positive attitude, eager to learn, critical thinking, problem solving skills, good team player and highly collaborative.

What they're looking for

Cyber Threat HuntingTroubleshootingAutomation TechnologyComputer Engineering

About Singapore Telecommunications Limited

Industry: Information & communicationsWebsite ↗

Frequently asked questions

What does a Engineer, Mobile Security Operations at Singapore Telecommunications Limited do?

Responsible for supporting the daily operation of Mobile Network Security system. Install, configure, troubleshoot, and maintain security systems. Identifying potential vulnerabilities and implementing security measures Maintaining up-to-date knowledge of the latest cyber threats, vulnerabilities, a…

What skills does this Engineer, Mobile Security Operations role need?

Key skills for this role include Cyber Threat Hunting, Troubleshooting, Automation Technology, Computer Engineering.

How much does a Engineer, Mobile Security Operations at Singapore Telecommunications Limited pay?

This role lists a salary of S$4,500 – S$6,500 per month.

Is this Engineer, Mobile Security Operations role remote, hybrid, or on-site?

The listing is based in D19 Hougang, Sengkang, Serangoon Garden, Punggol. Check the posting for remote or hybrid options.

How do I apply for this Engineer, Mobile Security Operations role?

You can apply directly on Singapore Telecommunications Limited's careers page. ApplyLah can tailor your résumé and cover letter to this exact role in seconds first.