Senior IT / Network Engineer - Enterprise Infrastructure

GMP RECRUITMENT SERVICES (S) PTE LTD; Singapore; On-site; SGD 110,000 - 170,000; Full time

Job summary

GMP Technologies (S) Pte Ltd in Singapore seeks an experienced Senior IT / Network Engineer to oversee and secure its enterprise IT infrastructure. The role focuses on reliability through network design, system deployment and upgrades.

You will work across network, systems and facilities teams on critical projects, leading NAC deployments, firewall administration, and AD/Entra ID management while coordinating with vendors and IT ops.

Qualifications

• Bachelor’s or Diploma in CS/IT/Network Engineering.
• 5–8+ years of hands-on enterprise network administration.
• Experience with Cisco/Aruba/Huawei switches and Fortinet firewalls.

Responsibilities

• Design, deploy, and maintain high-availability network infrastructure.
• Lead NAC deployments for RBAC across wired, wireless, VPN.
• Administer, audit, and troubleshoot firewalls, IPS/IDS, EDR, DLP.
• Manage Active Directory, GPO/OU, and Entra ID.
• Maintain backup, DR readiness, and VDI environments.
• Direct vendors, ISPs, and hardware suppliers with SLAs and budgets.
• Create technical docs, topology diagrams, and SOPs; conduct vulnerability assessments.

Skills

Network admin

Systems engineering

Vendor management

Technical leadership

Stakeholder comms

Security awareness

Education

Bachelor’s/Diploma in CS/IT/Network Eng

Tools

Cisco devices

Aruba/HPE switches

Fortinet firewalls

SD-WAN

SASE

IPsec VPN

802.1X

Windows Server

Active Directory/Entra ID

VMware/Hyper-V

VDI

Job description

Our client, a Singapore-based organisation, is seeking an experienced Senior IT / Network Engineer to oversee and secure its enterprise IT infrastructure. This full-time permanent role offers the opportunity to lead network design, systems deployment and infrastructure upgrades with a focus on reliability. You will work across network, systems and facilities teams on critical projects.

Responsibilities

• Design, deploy and maintain high-availability network infrastructure, including core switches, firewalls, routers, SD-WAN and SASE solutions
• Lead NAC deployments to enforce role-based access policies across wired, wireless and VPN networks
• Administer, audit and troubleshoot firewalls, IPS/IDS, EDR and DLP agents
• Manage Active Directory, Group Policy, Microsoft 365 and OU restructuring to maintain strict access control
• Maintain enterprise backup systems, disaster recovery readiness and VDI environments
• Lead IT and structured cabling requirements for office renovations and expansion fit-outs
• Direct vendors, ISPs and hardware suppliers through quotation reviews, SLA evaluations and budget tracking
• Author technical documentation, network topology diagrams and SOPs, and conduct vulnerability assessments

Requirements

• Minimum 5 to 8+ years of hands‑on experience in enterprise network administration, systems engineering and IT infrastructure management
• Bachelor's Degree or Diploma in Computer Science, Information Technology, Network Engineering or a related discipline
• Hands‑on experience with HPE Aruba ClearPass, Cisco, Aruba or Huawei switches, Fortinet firewalls, SASE, SD‑WAN, IPsec VPN and 802.1X
• Experience with Windows Server, Active Directory/Entra ID, GPO/OU management, VMware/Hyper‑V and VDI
• Knowledge of BitLocker, DLP, KnowBe4, PDPA and endpoint security compliance
• Strong vendor management, stakeholder communication and technical leadership skills
• Certifications such as CCNP/CCNA, HPE Aruba, CISSP/CISM, Fortinet NSE 4+ or MCSE are preferred

We regret that only shortlisted candidates will be notified.

GMP Technologies (S) Pte Ltd | EA License: 09C3051 | EA Personnel: Arcus Ang | Registration No: R1985843