Overview

Communications Engineer (Voice), Intelligent Transport

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Date: 7 Nov 2025

Location:

Singapore, Singapore

Company:
Singtel Group

NCS is a leading technology services firm that operates across the Asia Pacific region in over 20 cities, providing consulting, digital services, technology solutions, and more. We believe in harnessing the power of technology to achieve extraordinary things, creating lasting value and impact for our communities, partners, and people. Our diverse workforce of 13,000 has delivered large-scale, mission-critical, and multi-platform projects for governments and enterprises in Singapore and the APAC region.

We are seeking a knowledgeable and proactive Voice Communication System Engineer to deploy, maintain, and support our enterprise voice communication infrastructure. This role is critical in ensuring reliable, scalable, and secure voice communication services, including VoIP, PBX systems, and unified communications platforms.

Responsibilities

  • Configure, deploy and maintain enterprise voice communication systems including VoIP, PBX, SIP trunks and other communication platforms.
  • Install, upgrade, and troubleshoot voice hardware and software components.
  • Manage voice network infrastructure, including QoS, SIP routing, and voice gateways.
  • Monitor system performance and voice quality; resolve voice-related incidents and outages.
  • Collaborate with network, security, and infrastructure teams to ensure integrated and secure voice services.
  • Plan and execute voice system migrations, upgrades, and expansions.
  • Develop and maintain documentation for voice system architecture, processes, and user guides.
  • Provide Level 2/3 support for voice communication issues.
  • Evaluate new voice technologies and recommend improvements.
  • Ensure compliance with regulatory and security standards related to voice communications.

Essential Qualification

  • Diploma/Degree in Electronic & Electrical Engineering, Telecommunications, Computer Science, Information Technology or related field.
  • 5+ years of experience in voice communication systems engineering.
  • Strong knowledge of VoIP protocols (SIP, RTP), PBX systems, and digital/analog voice systems.
  • Experience with radio communication systems (e.g., VHF/UHF and SATCOM).
  • Familiarity with network protocols and infrastructure (TCP/IP, QoS, VLANs).
  • Proficiency in system integration and troubleshooting tools.

We are driven by our AEIOU beliefs—Adventure, Excellence, Integrity, Ownership, and Unity—and we seek individuals who embody these values in both their professional and personal lives. We are committed to our Impact: Valuing our clients, Growing our people, and Creating our future.  

Together, we make the extraordinary happen.   

Learn more about us at ncs.co and visit our LinkedIn career site. 

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.