Subsystem Engineer (Communications) - Global Engineering Firm

Randstad Singapore; Singapore; On-site; SGD 80,000 - 120,000; Full time

Job summary

Randstad Singapore seeks a Subsystem Engineer (Communications) to lead the project's communications and IT systems, overseeing integrators and subcontractors to ensure compliance with railway standards.

You will manage network architectures, capacity calculations, and installation drawings, ensuring equipment adheres to EN standards and leading tests and handovers with key stakeholders.

Qualifications

• Bachelor's degree in IT, engineering or related technical field.
• Minimum 3 years of system integration or IT project engineering experience.
• Experience in railway systems is a major advantage.
• Strong OT/IoT integration and cybersecurity knowledge (IEC 62443).

Responsibilities

• Lead system integrator and subcontractor activities; review designs and drawings.
• Ensure onboard and backend equipment meet railway and safety standards.
• Oversee deployment of networking, cybersecurity, edge computing and comms gear.
• Integrate onboard sensors, PLCs, and wireless networks (Wi-Fi/BLE/ZigBee/LoRaWAN).
• Lead TVRA for OT and network infra per IEC 62443.
• Develop test plans; witness acceptance tests and verify vendor performance.
• Serve as technical focal point during inspections and handovers.

Skills

System integration

Industrial networking

5G/wireless communications

Vendor & contractor management

Regulatory compliance

Education

Bachelor's degree in IT/Engineering

Tools

Switches

Firewalls

VPN

TCP/IP

5G/Wireless tech

Job description

Company Overview

Our client is a global Multinational Corporation (MNC) specializing in large-scale engineering, infrastructure, and advanced transportation systems. They are currently undertaking a major railway transit upgrading and depot expansion project in Singapore.

Role Overview

We are seeking a dedicated Subsystem Engineer (Communications) to act as the primary technical lead for the project's communication and IT systems. In this role, you will take full ownership of overseeing system integrators and subcontractors, ensuring that all technical deliverables meet strict railway and regulatory standards.

Key Responsibilities

• Serve as the technical lead overseeing system integrator and subcontractor activities, which includes reviewing and approving engineering designs, network architectures, capacity calculations, and installation drawings.
• Ensure all 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 the deployment of networking, cybersecurity, edge computing, and communication equipment while validating high-availability server infrastructure.
• Manage the integration of onboard sensors, PLC systems, and wireless communication networks (including Wi-Fi, BLE, Zigbee, and LoRaWAN) to guarantee reliable data acquisition and transmission.
• Ensure strict compliance with cybersecurity requirements by leading Threat, Vulnerability & Risk Assessments (TVRA) for operational technology (OT) and network infrastructure in accordance with IEC 62443 standards.
• Lead system testing, commissioning, and acceptance activities by developing test plans, witnessing acceptance testing, and validating vendor performance against project requirements.
• Act as the technical focal point for customers, transport operators, regulatory authorities, and external stakeholders during inspections, testing, and system handover activities.

Requirements

• Bachelor's Degree in Information Technology, Engineering, or a highly related technical discipline.
• Minimum 3 years of experience in system integration, industrial networking, or IT project engineering.
• Prior experience in railway systems (such as rolling stock, signaling, or transit depot environments) is a major advantage.
• Strong technical proficiency in Industrial Networking (Switches, Firewalls, VPN, TCP/IP) and 5G/Wireless Communications (Wi-Fi, BLE, Zigbee, LoRaWAN).
• Solid understanding of OT/IoT System Integration and Cybersecurity frameworks (IEC 62443, TVRA).
• Proven capabilities in vendor and contractor management.

What's on Offer

• A 2-year contract role (with the possibility of renewal based on project requirements and performance).
• A competitive remuneration package featuring a base salary, Annual Wage Supplement (AWS), and a Variable Bonus.
• Standard working hours (Monday to Friday, 8:30 AM to 5:30 PM) at the project site.