Network Engineer (A10)

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

Job summary

A leading recruitment agency is looking for an experienced A10 Network Engineer for a 6-month contract in City Of London. The role involves working on complex network infrastructure, primarily with A10 Networks Application Delivery Controllers. Candidates must have proven experience with A10 Networks and be SC or DV cleared. Skills in load balancing, traffic optimization, and network protocols are essential for this position.

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.
• Experience with load balancing, application delivery, and traffic optimisation.
• Active SC (Security Check) or DV (Developed Vetting) 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.
• Collaborate with cybersecurity, DevOps, and infrastructure teams.
• Support firewall, VPN, and intrusion prevention configurations where relevant.
• Document all configurations and processes in line with security compliance standards.

Skills

A10 Networks experience

Networking protocols (TCP/IP, HTTP/S, DNS, SSL/TLS, BGP, OSPF)

Load balancing

Application delivery

Traffic optimisation

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