L3 Network Engineer - 12 months agency contract
7000 - 9200 SGDTemporary
PERSOL SINGAPORE PTE. LTD.
Duration: 1 year
Working Hours: 8.30am - 6pm, Monday - Fridays. Standby and shift work may be required
Location: Central - Roaming may be required
Key Responsibilities
1. Project Delivery & Implementation
- Lead end-to-end delivery of network and security projects (LAN, WAN, DC, Hybrid Cloud)
- Execute deployment, configuration, migration, and cutover activities
- Develop MOPs, implementation plans, and rollback procedures
- Ensure smooth transition from project delivery to managed services/NOC operations
2. Network Design & Architecture
- Design scalable, resilient, and secure network architectures (Campus, Data Centre, Multi-site)
- Produce HLD and LLD documentation
- Implement segmentation, zoning, and high-availability (HA) designs
- Support hybrid environments integrating on-prem and cloud
3. Monitoring, Observability & NetGain Integration
- Deploy and integrate monitoring platforms such as NetGain Systems (Cloud Vista, EMedge)
- Configure SNMP, credential polling, and telemetry collection across network and server infrastructure
- Define alert thresholds, policies, and tuning strategies aligned with operational baselines
- Integrate monitoring with incident workflows and escalation models in NOC environments
4. Security Implementation
- Implement and manage firewalls (e.g., Palo Alto Networks, Fortinet, Check Point)
- Configure VPNs, NAT, IDS/IPS, and Zero Trust access controls
- Support SIEM integration (e.g., QRadar) and log forwarding strategies
- Ensure compliance with security frameworks (e.g., ISO 27001)
5. Managed Services & NOC Alignment
- Align project deliverables with managed services operating models (L1/L2/L3 support)
- Define monitoring KPIs, SLAs, and alerting thresholds for steady-state operations
- Support onboarding of devices into NMS platforms and ensure observability readiness
- Work closely with NOC teams for knowledge transfer and operational acceptance
6. Automation & Optimization
- Develop automation scripts (Python, Bash, Ansible) for:
- Configuration deployment
- Monitoring onboardingHealth checks and reporting
- Improve operational efficiency through automation of repetitive tasks
- Integrate APIs from network devices and monitoring tools where applicable
7. Troubleshooting & Performance Optimization
- Provide L3 support for complex network and security issues
- Conduct root cause analysis (RCA) and implement preventive improvements
- Perform failover testing, performance tuning, and validation
8. Documentation & Reporting
- Maintain detailed network diagrams and system documentation
- Prepare project status reports, risk logs, and technical write-ups
- Deliver as-built documentation and operational handover materials
Technical Requirements
Core Networking
- Strong hands-on experience in Routing & Switching (BGP, OSPF, VLANs, STP)
- Strong hands-on experience with WAN technologies (MPLS, SD-WAN, IPsec VPN)
- Hands-on experience with Data Centre networking (VXLAN, Spine-Leaf architecture)
Security
- Hands-on experience with at least one enterprise firewall platform, preferably Palo Alto Networks, Fortinet, or Check Point
- Experience with IDS/IPS, NAT, segmentation, and network hardening
- Practical understanding of secure access and Zero Trust concepts
Monitoring & NMS
- Experience with NetGain Systems Cloud Vista / EMedge is preferred
- Hands-on experience with SNMP (v2c/v3), Syslog, and NetFlow
- Experience with enterprise monitoring/NMS tools such as ManageEngine or SolarWinds is an advantage
Automation
- Practical scripting experience with Python, Bash, or PowerShell
- Hands-on experience with automation tools, preferably Ansible
- Experience with API integration across network/security platforms
- Experience in infrastructure-as-code is a plus
Systems & Cloud (Good to Have)
- Working knowledge of Microsoft Azure / AWS networking
- Linux (RHEL/Rocky) and Windows Server fundamentals
- Virtualization (VMware / Hyper-V)
Experience & Qualifications
- Bachelor’s degree in IT, Computer Engineering, or related field (or equivalent practical experience)
- 5–10 years of hands-on network engineering experience, with
- at least 5+ years of direct network project delivery and implementation experience, beyond day-to-day operations/support
- Hands-on experience delivering network infrastructure projects across enterprise or multi-site environments
- CCIE certifications are required for this role
- Strong experience working across multi-vendor network and security environments
- Experience with network design, implementation, migration, and cutover activities
- Experience in large-scale environments (multi-site, 100+ devices), onboarding infrastructure into monitoring platforms, and with network automation and API integrations
- Experience in managed services or NOC environments
- Experience providing L3 troubleshooting and technical support
- Strong troubleshooting and analytical skills
- Project delivery and execution mindset
- Client-facing communication and stakeholder management
- Ability to operate in fast-paced, multi-project environments
- Leadership and mentoring capability
Interested candidates, please click on the following link to begin your job search journey and submit your curriculum vitae (CV) directly.
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For more information on how we collect, use, disclose and protect your personal data, please refer to our Privacy Policy: If you wish to withdraw your consent, including consent relating to the use of your personal data for AI-enabled recruitment activities and AI development activities, please email us at View email address on mycareersfuture.gov.sg.
PERSOL Singapore Pte Ltd • RCB No. 200007268E • EA License No. 01C4394• Reg. R26159701 (Noor Eliza Chai Binti Ibrahim Essini Chai)
Vacancy posted 1 day ago
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