- Design, implement, and maintain secure, high-availability network infrastructure across global data centers
- Lead and contribute to data center buildouts and migrations
- Manage and optimize Cisco routing and switching environments, including Catalyst, Nexus, and ASR platforms.
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: R24123530, Ng Xuan
Allegis Group Singapore Pte Ltd, Company Reg No. 200909448N, EA License No. 10C4544
