Salary: £48,000 - 60,000 per year Requirements: 3–7 years of manual testing experience in EUC and network/security environments Hands-on knowledge of Zscaler components, Citrix, VDI, Windows/Mac OS, and M365 applications Understanding of TCP/IP, DNS, DHCP, VPN, routing, and network troubleshooting Familiarity with test management tools (JIRA, Azure DevOps, ALM) Strong analytical, problem-solving, and communication skills Must be eligible for UK SC security clearance (active SC preferred but not required) Responsibilities: Perform manual testing of EUC components: laptops/desktops, VDI, Citrix, mobile devices. Validate application packaging, distribution, and performance across EUC environments. Test Windows OS upgrades, M365 applications, collaboration tools, and enterprise software. Conduct Zscaler testing (ZIA, ZPA, Client Connector), authentication, SSO, and policy validation. Execute network testing, including firewall policies, VPN, LAN/WAN connectivity, and routing rules. Document test cases, results, defects, and collaborate with cross-functional teams to resolve issues. Technologies: Azure Citrix DevOps Firewall JIRA LAN Mobile Network Security TCP/IP VPN Windows Cloud More: We are seeking experienced Manual Test Engineers to join our high-performing IT team in Wokingham / Warwick, UK. This is a 6-month office-based contract with a competitive rate of £400/day (Inside IR35). You will focus on End User Computing (EUC), Zscaler security and network access. In our collaborative and innovative environment, you will work on challenging projects and gain exposure to cutting-edge enterprise security and network technologies. last updated 9 week of 2026