Senior Network Engineer [CCIE/Team Lead]

NCS is a leading technology services firm that operates across the Asia Pacific region in over 20 cities, providing consulting, digital services, technology solutions, and more. We believe in harnessing the power of technology to achieve extraordinary things, creating lasting value and impact for our communities, partners, and people. Our diverse workforce of 15,000 has delivered large-scale, mission-critical, and multi-platform projects for governments and enterprises in Singapore and the APAC region.

We are seeking an experienced Senior Network Engineer to take a leadership role in managing and optimising our enterprise and data center networks. In this position, you will lead problem management, oversee high-complexity network issues, and drive infrastructure improvements while mentoring junior engineers. This is a key role for professionals looking to shape network strategy, influence design decisions, and ensure resilient, high-performance network operations.

Responsibilities

• Diagnose complex technical problems and underlying issues that cause incidents or disruptions in infrastructure and network operations.

• Lead problem management procedures to identify root causes, implement permanent fixes, and prevent recurrence.

• Manage all technical escalations from engineers, ensuring timely resolution and knowledge transfer.

• Monitor the full lifecycle of problems, documenting findings, workarounds, and long-term solutions.

• Perform high-level configuration, support, and troubleshooting for network infrastructure.

• Develop action plans and timelines for major upgrade activities, ensuring smooth execution with minimal impact.

• Propose infrastructure improvements and future upgrades to align with evolving business and user needs.

• Test systems in advance of upgrades or updates to evaluate performance impact and risks.

• Review and analyse network performance, identifying opportunities to optimise capacity, stability, and efficiency.

• Evaluate and approve high complexity change requests in compliance with standard change management processes.

• Direct recovery and resolution efforts during network faults or downtime, ensuring alignment with SLAs.

• Recommend and implement adjustments to traffic flow, redundancy, or system design to improve resilience.

• Configure and program basic rules into SDN applications, controllers, and network components.

• Monitor the health and performance of SDN solutions, recommending adjustments to rules and policies as needed.

• Implement traffic flow adjustments across the network to support evolving operational needs.

• Create, refine, and enforce Standard Operating Procedures (SOPs) for engineers to follow.

• Document infrastructure problems, solutions, and preventive measures for organisational knowledge.

• Organise technical knowledge into user guides and training materials to upskill teams.

• Provide mentorship and guidance to engineers, ensuring best practices in operations, troubleshooting, and escalation.

The ideal candidate should possess
Due to government project sensitivity, we will only consider Singapore Citizen

• Education: Degree or Equivalent

• Experience: 6–10 years of IT or networking experience.

• Technical / Professional Skills: Certification – CCNP (min), CCIE (Preferable)

• Networking Knowledge:

• Enterprise Network Design

• Data Center Network Design

• Network Security Design

• Specialization breakouts 1-2 domains

Exposed in multiple areas below, expert in one area:

• Data Center Network

Nexus Switches (7K, 9K) & NX-OS technologies:

• OTV, vPC, Fex, VxLAN

• Fabric-Path, Anycast Gateway

• Multicast

Cisco ACI Technologies (SD-DC):

• L-2, L-3 Fabrics, VxLAN, Single-POD Design

• L-2 Out, L-3 Out networks

• vPC, Anycast Gateway

• VMM Domain Integration

• L4-L7 Services Integration

Others (Good to have):

• Application Delivery Controllers, LSLB, GSLB

• NGFW, NGIPS, Application Detection Engines, Anti-virus Anti-Malware Engines

• Bandwidth Management Systems

• Secure Proxy Systems

• DNS Technologies

• Enterprise Network

Wired Network:

• 2-Tier, 3-Tier Architectures

• MCE, SSO, NSF, Stack Switching

• MP-BGP, MPLS-VPN, Vrf-lite

• Network Access Control, 802.1x, Posturing, Profiling

Wireless Network:

• Radio Design, Heat Map, Site Survey Tools

• Wireless Security, Rouge AP detection & isolation

• Wireless Network Analytics

• Antenna Design and Signal Strength, data throughput

Software Defined Access Network:

• VxLAN, AutoQoS, QoS Anywhere

• APIC-EM, Cisco DNA Center

• SD-WAN

• Security

• PKI Intrastructure

• NGFW, NGIPS, Application Detection Engines, Anti-virus Anti-Malware Engines

• Stealth Watch & AMP

• Cisco ISE

• Security Baseline of Network Equipment

• Vulnerability Assessment

• Programmability

• Ansible, Python, Rest API

• OpenStack, OpenShift, UCSD