Senior Infrastructure Engineer (Network) - #1132522

About the role

We are seeking an experienced Senior Infrastructure Engineer (Network) to join our team at ES Recruitment Pte Ltd on a Yearly contract renewable basis. You are responsible for the daily operations, maintenance, and performance optimization of the Customer’s enterprise network infrastructure. This includes configuration, monitoring, incident response, change management, and reporting in compliance with SLA and security policies. The role will be based in Ang Mo Kio, North-East Region.

What we offer: Up to 13 850 Gross Monthly + Completion Bonus & Performance Bonus + Group Insurance + Leave & Medical Claims

What you'll be doing

1. 2. Key Responsibilities

   2.1 Operation & Administration

   - Perform daily log reviews to detect abnormal network behaviors or faults.

   - Administer user authentication, authorization, and accounting.

   - Maintain IP address schema, firewall rule sets, and encryption settings.

   - Apply firmware/software upgrades and critical security patches.

   - Manage cable patching, re-patching, and labeling.

   - Conduct incident troubleshooting, diagnostics, and documentation.

   - Maintain configuration backups, patch records, and audit logs.

   2.2 Network Configuration & Optimization

    - Configure routers, switches, firewalls, and load balancers.

    - Optimize throughput, latency, and load distribution across links.

   - Clean up obsolete configurations, ACLs, and firewall rules.

    - Maintain updated network topology and configuration documentation.

   2.3 Network Maintenance

   - Plan and execute scheduled maintenance with prior approval.

    - Conduct risk and impact assessments for changes.

   - Provide on-site support and verification during Customer-led preventive maintenance. - Ensure graceful shutdown/startup of networking equipment.

   2.4 Monitoring & Threshold Management

   - Monitor:- Link health, bandwidth usage, interface errors

    - Device performance (CPU, RAM, memory)

   - Detect and respond to:- Threshold breaches (e.g., 60% warning, 80% critical) - Bottlenecks, flapping routes, and degraded performance

   - Utilize tools such as Cisco Catalyst Center, SNMP-based NMS, and OpenText.

   2.5 Reporting

   - Submit monthly reports covering:- Fault summaries and incident metrics - Configuration changes and policy updates

   - Network utilization (CPU, link usage, latency trends)

   - Support ad hoc reporting via PSS or dashboard queries.

What we're looking for

1. Minimum 5 years of experience as a Senior Infrastructure Engineer or Network Administrator

2. Minimum Qualification: Diploma / CCNP, PCNSE, CCSA
   Clearance: Cat 2 (You are required to clear this for this project)

3. Technical Skills

   - Strong hands-on knowledge of Layer 2/3 switching, routing (OSPF/BGP), VLANs, ACLs, VPNs

   - Experience with Cisco, Fortinet, or Palo Alto devices preferred

   - Familiarity with log analysis, SNMP traps, syslogs, and SIEM integration

    - Scripting (Python, Ansible) is a plus for automation tasks

   Certifications

   - CCNP, Fortinet NSE, or equivalent

About us

ES Recruitment Pte Ltd is a leading provider of IT recruitment solutions in Singapore. With over a decade of experience, we have built a strong reputation for delivering high-quality talent to our clients across a range of industries. Our mission is to connect exceptional candidates with the right opportunities, helping both our clients and candidates achieve their goals.

If you're ready to take the next step in your career, we'd love to hear from you. Apply now to be considered for this exciting opportunity.

EA License No: 09C4235 I EA Reg: R1103307 (Hong Mei Lin)