Senior Network Security Infra Specialist

Date: 05-Sep-2022


Singapore, Singapore

Singtel Group


Singtel, Asia’s leading communications technology group, provides an extensive range of telecommunications and digital services to millions of consumers and businesses across Asia, Australia, Africa and the USA. With over 140 years of innovation behind us, we continue to push boundaries in our networks and services, to enrich lives and transform businesses.


Our core values – Customer Focus, Challenger Spirit, Teamwork, Integrity, and Personal Excellence – shape the way we work. We are passionate about making a difference and have an open and inclusive culture where everyone is empowered to do their best. Our diverse business means you will enjoy unique opportunities and rewarding experiences to learn and grow your career in a dynamic industry.


Join us and experience what it’s like to be with an Employer of Choice*. Together, let’s create a brighter digital future for all. *Awarded at the HR Fest Awards 2020




  • Producing an integrated solution covering all areas and in line with the TI strategy
  • Gathering the Infrastructure requirements for all projects with infrastructure deliverables.
  • Working closely with the Infrastructure Project Team (IPO) on project engagements.
  • Working with Infrastructure Planners to provide a consensus-based enterprise outcome that is scalable, adaptable and in line with ever changing business needs. Working closely with the Infrastructure Project Team (IPO) on project engagements.
  • Producing an infra diagram that identifies all infrastructure components including Network infrastructure, Security requirements and Compute/Storage requirement for the solution.
  • Ensure the solutions proposed is in compliance with security and best practices adopted by the industry.
  • Proper documentations and communicate Enterprise Infrastructure strategies & standards.
  • Ensure the solutions are in compliance and integration with enterprise architecture & Infosec policy for Infrastructure and Security systems by reviewing and advising on new and existing Information Technology projects.
  • Provide advice and guidance to management during planning phases to ensure that non-functional requirements are included in the overall specifications.
  • Provide advice and guidance to all areas of IT and Business Management, analysts, planners, designers and developers on all aspects of Network Security infrastructure.
  • To ensure the deliverables meet all related engineering, planning, and operational standards.
  • To identify potential network issues and risks, and to provide workable technical solutions to mitigate such risks.
  • To document network performance in order to take proactive and corrective action as needed.
  • Playing a major role in the selection of any new IT, infrastructure or technology solution.
  • To configure and support network projects such as MPLS, Ethernet, Ethernet access, Layer 2 switching, wireless, network security, and others.
  • Maintaining a knowledge base to ensure network intellectual property is retained.
  • Create and document the solution using the existing Infrastructure Standard Platforms and Design Patterns.
  • Maintaining a knowledge base to ensure network intellectual property is retained.
  • To lead meetings and produce presentations as needed for Supervisor and Top management.


The Ideal candidate should possess:

  • Degree in Computer Science/ Information Technology, Network Industry certification (e.g CCNA, CCNP) and Professional Security certification is highly desirable.
  • 6-8 years of experience on Corporate Network & Security.
  • 2-4 years of experience managing a team on Design, Delivery and Operations.
  • Experience and knowledge in area of Network (CISCO), Firewalls (Checkpoint, Fortinet), Security Orchestration (Algosec), IPS (Palo Alto), Load balancers (F5, Radware, Nginx), VPNs and Authentication Systems.
  • Knowledge of LAN, WAN and Data Centre network & Security industry standards relevant to data communications / networking and computing.
  • Knowledge of Software Defined Networking (SDN) on Cisco ACI will be advantageous.
  • Knowledge on Security best practices and experience in Network solutioning, Operations and Project Management.
  • Ability to direct project design and planning activities associated with complex or large sized network infrastructure development projects.
  • Experience in dealing with vendors on technology and services.



We believe in the strength of a vibrant, diverse and inclusive workforce where backgrounds, perspectives and life experiences of our people help us innovate and create strong connections with our customers. We strive to ensure all our people practices are non-discriminatory and provide a fair, performance-based work culture that is diverse, inclusive and collaborative.

About Singtel

Headquartered in Singapore, Singtel has 140 years of operating experience and played a pivotal role in the country’s development as a major communications hub. Optus, our subsidiary in Australia, is a leader in integrated telecommunications, constantly raising the bar in innovative products and services.

We are also strategically invested in leading companies in Asia and Africa, including Bharti Airtel (India, South Asia and Africa), Telkomsel (Indonesia), Globe Telecom (the Philippines) and Advanced Info Service (Thailand). We work closely with our associates, leveraging our scale in networks, customer reach and extensive operational experience to lead and shape the communications industry.

Together, the Group serves over 700 million mobile customers around world. Singtel is one of the largest listed Singapore companies on the Singapore Exchange by market capitalisation.

The Group has a vast network of offices throughout Asia Pacific, Europe and the USA, and employs more than 23,000 staff worldwide.