Senior Information Security Specialist

Singtel; Singapore; On-site; Confidential; Full time

Job summary

Singtel Singapore is seeking a Senior Information Security Specialist to join our Cyber Security Engineering team. You will partner with business stakeholders to understand access requirements and ensure alignment with security controls across on‑prem and multi‑cloud environments.

You will validate security tools, expand the security stack, and drive cost‑effective improvements while documenting SOPs and acting as SME for your technology stacks.

Qualifications

• Bachelor’s degree in CS, cyber security, or related field.
• 3+ years in cybersecurity, 2+ years in telco/enterprise IT.
• Experience designing, administering or deploying IT infrastructure with secure hardening.
• Experience hosting apps on on‑prem and multi‑cloud (AWS/Azure).
• IAM knowledge such as Active Directory and MFA.
• Strong analytical and communication skills.
• Initiative and customer-service orientation.
• Knowledge of CIS Controls or cyber security frameworks.

Responsibilities

• Validate effectiveness of security tools managed by CISO Singtel Singapore.
• Ensure adequacy of Cyber Security posture across tools.
• Review current technology stack for fit and cost effectiveness.
• Deploy new security stack to ensure fit‑for‑use and cost effectiveness.
• Expand scope of security systems (EDR, DAM, SIEM, SOAR, UEBA, PAM).
• Deliver new security tools to uplift overall security posture.
• Ensure SOPs are documented and compliant with policies.
• Act as SME for assigned technology stacks.
• Collaborate with IT and Enterprise to uplift coverage.
• Engage teams or vendors to diagnose issues.
• Support design of technology stack ensuring best practices.

Skills

Cybersecurity

Telco security

IAM

Analytical skills

Communication skills

Initiative

Education

Bachelor’s degree in CS/Cyber

Tools

Active Directory

Azure

AWS

VMware

Hyper-V

Windows Server

Job description

Singtel is where Technology meets Purpose.

We're building an AI-first telco for the future—connecting people, businesses and communities through trusted networks, intelligent digital services and next-generation technology.

From transforming everyday experiences in mobile, broadband, entertainment and lifestyle services to enabling enterprises with AI, 5G+, cloud, cybersecurity, data centres and digital platforms, we create the technology that powers how millions live, work and connect.

At Singtel, your work creates real impact. You'll solve meaningful challenges, shape critical digital infrastructure and help build secure, resilient and AI-enabled solutions that serve businesses, digital ecosystems and communities across the globe.

This is where BIG Possibilities become reality. Whether you're engineering intelligent networks, advancing sovereign AI cloud platforms, strengthening cybersecurity, designing seamless customer experiences or driving sustainable innovation, you'll be part of teams shaping the future of technology.

Backed by decades of expertise and driven by a culture of continuous learning and innovation, Singtel offers the scale, opportunities and support to help you grow your career while making a difference where it matters most.

Be a Part of Something BIG!

The Senior Information Security Specialist will play a key role in supporting Singtel Singapore Cyber Security ecosystem through hands‑on technical execution. This role partners with business stakeholders to understand access requirements and ensure alignment with security controls.

Make an Impact by:

• Validate effectiveness of security tools managed by CISO Singtel Singapore, Cyber Security Engineering


• Supporting and ensuring adequacy of Cyber Security posture for security tools managed by CISO Singtel Singapore, Cyber Security Engineering


• Continuous review of current technology stack being managed is fit for use and cost effective.


• Deploy new technology stack managed by the team where applicable to ensure fit for us and cost effectiveness.


• Expand scope of various security systems such as but not limited to EDR, DAM, SIEM, SOAR, UEBA and Privileged Access Management where required to increase visibility of the tools


• Deliver new security tools to uplift overall security posture of Singtel Singapore


• Ensure that SOPs are documented, performed and in compliance with relevant security policies and standards


• Subject matter expert for assigned technology stack(s), providing guidance to the team on managing the technologies including optimizing performance and capacity.


• Work with stakeholders in IT and Enterprise to uplift coverage for assigned technology stack(s) where applicable


• Work with the various SMEs of the various security systems managed by Cyber Engineering or other technical SMEs to ensure delivery of outcomes including tracking of the tasks required to meet the outcome


• Engage relevant teams and/or vendors to diagnose and rectify technical problems where necessary


• Ensure documents or processes required as part of project delivery methodology is adhered to


• Support and provide inputs to design of technology stack(s) as subject matter expert so that it is fit-for-use, conforms to security best practices and is cost effective.

Customer Experience and Teamwork

• Demonstrate professional, pro‑active qualities in dealing with internal clients and stakeholders.


• Work with all stakeholders to meet operation and security requirements.


• Promote knowledge sharing, effective communication and teamwork with peers.


• Maintain strategic vendor partnerships, relevant education and certification.


• Complete relevant education and training as required.


• Keep abreast of relevant technology and cyber threat landscape.

Skills for Success:

• Bachelor’s Degree in Computer Science, Cyber Security, Computer Engineering, or a related discipline


• Minimally 3 years of relevant working experience, with at least 2 years focused on cybersecurity in telco operations, network environments, or enterprise IT within the telecommunications domain


• Minimally 3 years hands‑on experience in designing, administration or deployment of IT infrastructure components including implementing best practices like security hardening


• Experienced in application hosting and operations across both on‑premises systems and multi‑cloud environments including AWS and Azure


• Working IAM knowledge such as Active Directory, Multi‑factor authentication


• Good analytical and communication skills


• Possess initiative with positive working attitudes and customer services oriented


• Strong teamwork, communication and interpersonal skills


• Independent and goal‑oriented


• Knowledgeable on CIS Controls or other Cyber Security frameworks.


• Good understanding of Change Management processes

Good to have:

• CRISC, CISSP or CISA


• Microsoft Hyper‑V, VMWare


• Windows Server


• .NET, Java or Python


• Basic network knowledge such as routing and switching


• Azure and AWS IAAS

Are you ready to say hello to BIG Possibilities?

Join Singtel to shape what's next and accelerate your career through meaningful work, continuous learning, and real impact.

Take the leap with Singtel to shape what’s next and accelerate your growth.