Network Engineer

PROGRESSION SEARCH PTE. LTD.; Singapore; On-site; SGD 90,000 - 150,000; Full time

Job summary

PROGRESSION SEARCH PTE. LTD. seeks a Senior / L3 Network Engineer to design, automate, and optimize enterprise network infrastructure across multi-client environments in Singapore. The role emphasizes a modern, code-centric approach to network operations and continuous improvement.

You will lead high‑level design, automate deployments, and mentor L1/L2 engineers while ensuring resiliency with F5 LTM, NetBox, Prometheus, and Grafana.

Qualifications

• CCNA mandatory certification; CCNP or equivalent preferred.
• Experience with enterprise network automation and IaC tooling.
• Proven track record in L2/L3 infrastructure environments.

Responsibilities

• Design scalable, fault-tolerant network topologies across multi-client environments.
• Automate provisioning and lifecycle management of core network hardware and virtual appliances.
• Develop and maintain CI/CD pipelines for network configurations.
• Maintain centralized Git repositories for configurations and scripts.
• Serve as escalation point for complex incidents and optimize performance.

Skills

L3 Networking

IaC

CI/CD pipelines

Network automation

Git repositories

Education

Bachelor's degree in IT/CS/Network Engineering

Tools

F5 LTM

Git (GitHub/GitLab)

NetBox

Prometheus

Grafana

Job description

CLIENT SUMMARY

Our client is a global technology services provider specializing in comprehensive, enterprise-grade IT infrastructure management and digital transformation solutions. Delivering robust managed services to a diverse portfolio of international organizations, they focus on driving innovation, operational resilience, and continuous service optimization across hyperconverged infrastructure, multi-cloud, and cross-technology environments.

RESPONSIBILITIES

The Senior / L3 Network Engineer is a subject matter expert responsible for the high-level design, provisioning, and optimization of enterprise network infrastructure across multi-client environments. This role moves away from traditional manual administration, championing a modern, code-centric approach to network operations.

As an L3 engineer, you will serve as the ultimate escalation point for complex network incidents , architect scalable network fabrics, and build continuous integration pipelines to automate network infrastructure deployment.

1. Network Infrastructure & Automation (IaC)

• Network Architecture: Partner closely with traditional network engineering and software development teams to design highly scalable, resilient, and fault‑tolerant network topologies.
• Infrastructure as Code (IaC): Automate the provisioning, configuration, testing, and lifecycle management of core network hardware and virtual appliances-including routers, switches, firewalls, and load balancers.
• CI/CD Deployment Pipelines: Develop, maintain, and optimize robust CI/CD pipelines engineered explicitly for deploying network configurations and operational code safely into production.
• Source of Truth & Version Control: Maintain and govern centralized Git repositories for all automated scripts, configurations, and network code, ensuring a secure audit trail.

2. Advanced L3 Network Operations & Support

• L3 Escalation Support: Act as the highest tier of internal technical escalation, diagnosing and resolving complex, multi‑domain network performance issues and outages.
• Load Balancing & Traffic Management: Configure, maintain, and troubleshoot enterprise load balancers (such as F5 LTM) to ensure optimized traffic distribution and maximum uptime.
• Proactive Performance Monitoring: Implement and tune advanced network monitoring and logging platforms to gain deep visibility into network health and preemptive fault discovery.
• Trend Analysis & Ticket Reduction: Conduct thorough trend analyses on recurring infrastructure alerts to engineer permanent automation fixes, systematically driving down manual ticket volume.

3. Change Governance & Operational Leadership

• High-Risk Maintenance: Plan, document, and execute critical network maintenance, firmware upgrades, patching windows, and disaster recovery simulation testing.
• Risk Mitigation: Author comprehensive change management records, identifying structural risks and establishing bulletproof rollback and mitigation strategies.
• Team Upskilling: Actively mentor and provide technical triage documentation and guidance to L1 and L2 engineers to improve initial line troubleshooting accuracy.

REQUIREMENTS

Technical Certifications (Highly Valued)

• Core Networking: CCNA is a mandatory technical requirement. CCNP (Enterprise, Routing & Switching) or equivalent professional certification is highly preferred;
• Firewalls & Security Edge: CCNP Security, PCNSE (Palo Alto), or advanced certifications in Fortinet (FortiGate/FortiManager) or Check Point architectures.

Tooling & Ecosystem Expertise

• Network Automation & IaC: Ansible (for network configuration management) and Terraform (Infrastructure as Code).
• Network Source of Truth: Experience with NetBox or equivalent IPAM tools.
• Version Control & Pipelines: Extensive hands‑on usage of Git, GitHub, or GitLab CI/CD systems.
• Monitoring Platforms: Experience utilizing open‑source or enterprise monitoring toolsets like Prometheus and Grafana.
• Core Network Services: Solid understanding of enterprise core services including F5 LTM/WAF, Cisco ISE AAA services, NTP, and Point‑to‑Point/Internet routing architectures.

Academic & Baseline Experience

• Education: Bachelor's degree or equivalent professional qualification in Information Technology, Computer Science, or Network Engineering.
• Experience: Proven track record operating in an L2/L3 infrastructure capacity, ideally within a Managed Services or large scale enterprise environment.