Network Engineer

Tek Systems; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

A leading technology solutions provider is seeking an experienced Network Engineer to design and implement high-availability network infrastructure. The role requires in-depth technical expertise in firewall management, Cisco routing, and data center migration, along with a proactive problem-solving approach. Candidates should thrive in collaborative environments and have a strong record of managing complex network projects.

Qualifications

• Strong expertise with Juniper SRX firewalls and Cisco infrastructure.
• Experience in data center migration projects.
• Ability to manage priorities independently and work in distributed teams.

Responsibilities

• Design and maintain network infrastructure across global data centers.
• Manage firewall platforms and ensure high availability.
• Collaborate with cross-functional teams for project delivery.

Skills

Firewall Management

Cisco Routing and Switching

Network Troubleshooting

Packet Analysis

Education

Bachelor's Degree in Computer Science or related field

Tools

Wireshark

Cisco Prime

SolarWinds

Job description

• Design, implement, and maintain secure, high-availability network infrastructure across global data centers
• Take full ownership of firewall platforms
• Lead and contribute to data center buildouts and migrations

Job Summary

We are seeking an experienced Network Engineer with a strong background in firewalls, Cisco routing and switching, and data center build and migration projects. The ideal candidate will demonstrate deep technical expertise, a proactive approach to problem-solving, and a collaborative mindset for working across technology and business teams.

Key Responsibilities

·Design, implement, and maintain secure, high-availability network infrastructure across global data centers.

·Take full ownership of firewall platforms, including configuration of security policies, NAT rules, high availability (HA) clustering, and advanced troubleshooting.

·Lead and contribute to data center buildouts and migrations

·Manage and optimize Cisco routing and switching environments, including Catalyst, Nexus, and ASR platforms.

·Configure and troubleshoot core network protocols at Layer 2 and Layer 3 (VLAN, STP, OSPF, BGP, EIGRP).

·Work closely with cross-functional teams to ensure seamless project delivery.

·Ensure network reliability through proactive incident management and thorough root cause analysis.

·Oversee and deliver multiple projects concurrently, ranging from hardware upgrades to complex migration initiatives.

·Collaborate with external vendors and service providers for implementation support, issue resolution, and performance tuning.

·Maintain up-to-date documentation, including detailed network diagrams, configurations, and operational runbooks.

Key Qualifications

·Strong expertise with Juniper SRX firewalls, including complex security policy development, chassis clustering (HA), and deep packet inspection.

·Extensive hands-on experience with Cisco network infrastructure, particularly Nexus 5k/7k/9k switches, Catalyst series, and ASR routers.

·Strong grasp of data center networking principles, including Layer 2/Layer 3 segmentation, redundancy, and scalable architecture.

·Proven track record in delivering data center migration and build projects, with experience in change control processes, rollback strategies, and cross-functional coordination.

·Advanced knowledge of routing protocols (OSPF, BGP, EIGRP) and Layer 2 technologies (VLANs, STP, VTP).

·Skilled in troubleshooting and diagnostics, utilizing CLI tools, system logs, and packet analysis tools (Wireshark, flow capture)

·Experience with network management platforms, including Cisco Prime, SolarWinds, and Junos Space.

·Strong communication and documentation abilities, capable of translating complex technical issues into clear, actionable insights.

·Self-motivated and reliable, with the ability to manage priorities independently and thrive in a globally distributed team under time-sensitive conditions.

Good to Have

·Exposure to network automation using Python, Ansible, or REST APIs.

·Experience with virtualization technologies and fabric networks (vPC, VXLAN, VMware NSX).

We regret to inform that only shortlisted candidates will be notified / contacted.

EA Registration No.: CHOI RACHAEL , R25129167

Allegis Group Singapore Pte Ltd, Company Reg No. 200909448N, EA License No. 10C4544