Quality Assurance Tester

Company: Gazelle Global
Apply for the Quality Assurance Tester
Location: Greater London
Job Description:

Manual Test Engineer (SC Cleared / Eligible)

Contract: 6 to 12 months

Hybrid: 3 days onsite

End-to-end testing role covering application and network layers within a secure environment. You will own test execution across complex systems, ensuring stability, performance and compliance.

Key Responsibilities

• Design and execute functional, regression, integration and UAT testing

• Validate APIs, workflows, UI and data integrity across platforms

• Perform LAN, WAN, Wi-Fi and VPN testing including DNS, DHCP, routing

• Assess firewall rules, proxy behaviour and network performance under load

• Capture defects with clear evidence and drive resolution with engineering teams

• Produce test plans, RTM, reports and maintain artefacts in JIRA or ADO

• Support change and release cycles aligned to ITIL processes

Requirements

• 3 to 7 years manual testing experience across web, mobile or desktop

• Strong SDLC, STLC and defect lifecycle knowledge

• Solid understanding of networking fundamentals TCP/IP, DNS, VLANs

• Experience analysing logs, network traces and backend data (SQL)

• Eligible for SC clearance, active clearance highly advantageous

For more information and direct contact with me, please send me an email and call only if required. I will be sure to check responses daily and shortlist the best candidates; if you are shortlisted, you will hear from me.

Robert@gazellegc.com

+44 7506151904

Posted: April 22nd, 2026