Senior Network Architect & Infra Reliability Engineer

Land Transport Authority (LTA) Singapore; Singapore; On-site; SGD 70,000 - 100,000; Full time

Job summary

Land Transport Authority (LTA) Singapore seeks a Senior/Executive Engineer to design, implement and support AFC network infrastructure underpinning Singapore’s rail and bus ticketing systems. You will work on on-premises, datacentre, and cloud environments, turning project needs into detailed network designs and secure configurations.

You will lead hands-on installation, testing, and commissioning of network gear, plus ongoing optimization, backups and security controls aligned with

Qualifications

• At least 3 years of experience in designing and implementing IT/OT networks.
• CCNA certification preferred.
• Knowledge of TCP/IP, HTTP/S, FTPS, SFTP and OSI model as applied to enterprise design.
• IP addressing, CIDR, subnets, firewalls, routers, MPLS and cloud design.

Responsibilities

• Design secure and resilient AFC networks across LAN, WAN, WLAN, fibre and cloud.
• Create IP plans, security controls, configuration standards and implementation/rollback plans.
• Install, configure, integrate and commission network equipment and servers in test and live environments.
• Plan changes, upgrades and migrations, including patches and firmware updates, with minimal disruption to services.
• Monitor network health, troubleshoot faults using logs and tools; implement lasting fixes.
• Implement and maintain security controls, network segmentation, and access management per public-sector requirements.
• Maintain backups of critical configurations and data; test restoration and recovery procedures.
• Keep network diagrams, records, and SOPs accurate and up-to-date.
• Collaborate with project teams, system engineers, cybersecurity specialists, operators, vendors and service providers.
• Look for automation opportunities and standardize configurations to improve reliability.
• Support planned cutovers and on-site incident recovery outside office hours when required.

Skills

Independent work

Team player

Problem solving

Education

Engineering/CS/IS degree or related field

Tools

AWS

Azure

Linux

Windows

AIX

Networking hardware

Job description

Land Transport Authority (LTA) Singapore seeks a Senior/Executive Engineer to design, implement and support AFC network infrastructure underpinning Singapore’s rail and bus ticketing systems. You will work on on-premises, datacentre, and cloud environments, turning project needs into detailed network designs and secure configurations.

You will lead hands-on installation, testing, and commissioning of network gear, plus ongoing optimization, backups and security controls aligned with