Network Security Engineer- F5

OPENSOURCE TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 60,000 - 80,000; Full time

Job summary

A leading tech company in Singapore is seeking a Network Security Engineer with over 3 years of experience in implementing and managing F5 and firewall solutions. Candidates should have a strong understanding of the Azure cloud platform and security principles. Key responsibilities include deploying and maintaining security systems and collaborating with teams to align security policies with business objectives. Preferred certifications include Microsoft Certified Azure Security Engineer and CCNP Security.

Qualifications

• 3–5 years of hands-on experience in network security or engineering roles.
• Strong understanding of Azure cloud platform and security principles.

Responsibilities

• Implement and manage F5 and firewall solutions.
• Deploy and maintain Azure Cloud security.
• Integrate and configure security solutions for application delivery.

Skills

F5 BIG-IP platforms (LTM, WAF/ASM, API)

Azure cloud security (NSG, APIM)

Network firewall solutions (FTD, FMC)

Network protocols (TCP/IP, DNS, HTTP/S)

Security principles (firewalls, IDS/IPS, VPNs)

Automation and cloud security

Job description

Role Overview

We are seeking a Network Security Engineer with 3+ years of hands‑on experience in implementing and managing F5 and firewall solutions, with a strong understanding of the Azure cloud platform and security principles.

Key Responsibilities

• Security Implementation & Management
• Deploy and maintain F5 systems with experience in LTM, WAF, API.
• Deploy and maintain Azure Cloud security, with experience in APIM gateways.
• Implement and maintain firewall management and security solutions.
• Security Policy & Configuration
• Implement and enforce granular security policies on F5, firewall solutions, and Azure APIM gateways.
• Perform regular policy rule base reviews, cleanups, and optimizations to maintain a strong security posture and network performance.
• Integrate and configure F5, firewall, and security solutions to enforce application delivery and security policies.

Documentation & Collaboration

• Prepare and maintain diagrams, configurations, and standard operating procedures.
• Collaborate with cross‑functional teams to ensure security policies align with business objectives.

Qualifications

• Experience: 3–5 years of hands‑on experience in network security or engineering roles.

Technical Skills

• Hands‑on experience with F5 BIG‑IP platforms (LTM, WAF/ASM, API).
• Proven experience with Azure cloud security (NSG, APIM).
• Implementation knowledge of network firewall solutions (FTD, FMC).
• Strong understanding of network protocols (TCP/IP, DNS, HTTP/S).
• Knowledge of security principles (firewalls, IDS/IPS, VPNs).
• Familiarity with automation and cloud security is a plus.

Preferred Certifications

• Microsoft Certified: Azure Security Engineer Associate
• Cisco Certified Network Professional (CCNP Security)
• F5 Certified Administrator or F5 Certified Technology Specialist (CTS)
• Other relevant security certifications (CISSP, CompTIA Security+)