Lead Enterprise Network & Systems Engineer

talent trader group pte. ltd.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Talent Trader Group Pte. Ltd. seeks a Senior Network & Systems Engineer to maintain and enhance enterprise IT infrastructure, including network, security and server services.

You will manage Windows Server, Active Directory, Microsoft 365 and virtualization while leading infrastructure projects and coordinating with vendors. The role emphasizes hands-on networking, firewall management, system administration and IT governance to ensure secure, reliable and scalable operations across the business

Qualifications

• Diploma or Degree in Information Technology, Computer Science, Network Engineering or a related discipline.
• Minimum 5–8 years of relevant experience in IT infrastructure, network engineering or systems administration.
• Strong hands-on knowledge of enterprise networking, firewall administration and network security.
• Experience with Active Directory, Group Policy, Microsoft 365 and Windows Server administration.
• Familiarity with network access control, wireless infrastructure, VPN, SD-WAN and enterprise switching.
• Exposure to virtualisation, VDI solutions, backup systems and endpoint security management.
• Experience managing IT infrastructure projects and coordinating external vendors or contractors.
• Good troubleshooting, communication and stakeholder management skills.
• Able to work independently and take ownership of technical matters.

Responsibilities

• Manage and improve enterprise network infrastructure, including switches, routers, firewalls, wireless networks and VPN connectivity.
• Oversee network security configurations, access controls and monitoring to ensure reliable and secure connectivity.
• Manage network segmentation, VLANs, routing and traffic management across enterprise environments.
• Monitor and troubleshoot network performance, security alerts and connectivity issues.
• Implement and maintain network access management solutions to ensure only authorised users and devices can access company resources.
• Administer Windows Server environments, Active Directory, Group Policy and Microsoft 365.
• Manage user accounts, access permissions and enterprise directory structures.
• Oversee data backup, recovery procedures and business continuity readiness.
• Support virtualisation and virtual desktop environments for business and technical users.
• Maintain endpoint security standards, including system updates, device encryption and security compliance.
• Lead IT infrastructure setup for office expansion, renovation and workplace improvement projects.
• Coordinate network cabling, server room arrangements, equipment installation and IT hardware deployment.
• Work with facilities teams and external contractors on infrastructure requirements and technical implementation.
• Manage IT vendors, service providers and suppliers, including quotations, service agreements, project schedules and cost considerations.
• Ensure projects are delivered according to technical requirements and operational timelines.
• Maintain IT policies, procedures, technical documentation and network diagrams.
• Conduct routine infrastructure reviews, security checks and vulnerability assessments.
• Support internal audits and ensure IT systems comply with relevant data protection and security requirements.
• Identify opportunities to improve IT processes, infrastructure reliability and overall system performance.

Skills

Enterprise networking

Network security

Windows Server

Active Directory

Microsoft 365

VLANs

VPN

SD-WAN

Vendor management

Education

Diploma or Degree in IT/CS/Network Engineering

Tools

Cisco

HPE Aruba

Fortinet

VMware/Hyper-V

Windows Server admin

Job description

Talent Trader Group Pte. Ltd. seeks a Senior Network & Systems Engineer to maintain and enhance enterprise IT infrastructure, including network, security and server services.

You will manage Windows Server, Active Directory, Microsoft 365 and virtualization while leading infrastructure projects and coordinating with vendors. The role emphasizes hands-on networking, firewall management, system administration and IT governance to ensure secure, reliable and scalable operations across the business