Subsystem Engineer (Communications) – Railway Transit Project

About the role

A global MNC specialising in large-scale engineering, infrastructure and advanced transportation systems is undertaking a major railway transit upgrading and depot expansion project in Singapore. It is looking for a Subsystem Engineer (Communications) to act as the primary technical lead for the project's communication and IT systems, taking full ownership of system integrators and subcontractors so that all deliverables meet strict railway and regulatory standards.

Key responsibilities

• Review and approve engineering designs, network architectures, capacity calculations and installation drawings.
• Ensure onboard and backend equipment complies with railway, telecommunications and regulatory safety requirements such as EN 50155, EN 45545-2 and EN 50121-3-2.
• Oversee deployment of networking, cybersecurity, edge computing and communication equipment, and validate high-availability server infrastructure.
• Manage integration of onboard sensors, PLC systems and wireless networks (Wi-Fi, BLE, Zigbee, LoRaWAN) for reliable data acquisition and transmission.
• Lead Threat, Vulnerability and Risk Assessments (TVRA) for OT and network infrastructure in line with IEC 62443.
• Lead system testing, commissioning and acceptance, including test plans, witnessing acceptance tests and validating vendor performance.
• Act as technical focal point for customers, transport operators, regulators and other stakeholders during inspections, testing and handover.

Required profile

• Bachelor's degree in Information Technology, Engineering or a closely related technical discipline.
• Minimum 3 years of experience in system integration, industrial networking or IT project engineering.
• Prior experience in railway systems (rolling stock, signalling or transit depots) is a major advantage.
• Proven capability in vendor and contractor management.

Required skills

• Industrial networking: switches, firewalls, VPN, TCP/IP
• 5G and wireless communications: Wi-Fi, BLE, Zigbee, LoRaWAN
• OT/IoT system integration and cybersecurity frameworks (IEC 62443, TVRA)

What we offer

• 2-year contract role, with possible renewal depending on project needs and performance.
• Remuneration package with base salary, Annual Wage Supplement (AWS) and variable bonus.
• Standard working hours Monday to Friday, 8:30 AM to 5:30 PM at the project site.