Network Engineer

Pearson Whiffin Recruitment Ltd; City Of London; On-site; GBP 60,000 - 80,000; Full time

Job summary

A technology recruitment agency is seeking an experienced A10 Network Engineer for a 6-month contract in London. The role involves managing complex network infrastructure and A10 Networks' solutions, requiring hands-on experience with high availability and load balancing. Essential is a solid background in networking protocols and active security clearance (SC or DV). This position offers a unique opportunity to work in a high-security environment.

Qualifications

• Proven experience working with A10 Networks (Thunder ADC, CGNAT, SSL Insight).
• In-depth understanding of networking protocols – TCP/IP, HTTP/S, DNS, SSL/TLS, BGP, OSPF.
• Active Security Check (SC) or Developed Vetting (DV) clearance is essential.

Responsibilities

• Configure, deploy, and manage A10 Thunder Series devices (ADC, CGNAT, SSLi, etc.).
• Perform system integrations, upgrades, and troubleshooting within live network environments.
• Design and implement network solutions tailored for performance, resilience, and security.

Skills

A10 Networks experience

Networking protocols knowledge

Load balancing

Job description

A10 Network Engineer (DV/SC Cleared)

We are seeking an experienced A10 Network Engineer for a 6 month contract, inside IR35, supporting high-security environments. You’ll be working on complex network infrastructure, primarily focused on A10 Networks’ Application Delivery Controllers (ADCs) and security solutions.

This role demands a hands-on engineer with a solid understanding of high availability, load balancing, and Layer 4-7 traffic management, ideally within secure, mission-critical environments.

Key Responsibilities:

• Configure, deploy, and manage A10 Thunder Series devices (ADC, CGNAT, SSLi, etc.)
• Perform system integrations, upgrades, and troubleshooting within live network environments
• Design and implement network solutions tailored for performance, resilience, and security
• Collaborate with cybersecurity, DevOps, and infrastructure teams to ensure seamless operations
• Support firewall, VPN, and intrusion prevention configurations where relevant
• Document all configurations and processes in line with security compliance standards

Essential Skills & Experience:

• Proven experience working with A10 Networks (Thunder ADC, CGNAT, SSL Insight)
• In-depth understanding of networking protocols – TCP/IP, HTTP/S, DNS, SSL/TLS, BGP, OSPF
• Experience with load balancing, application delivery, and traffic optimisation
• Active SC (Security Check) or DV (Developed Vetting) clearance is essential