MERITUS are recruiting for a Software Tester (SFIA 4) to join a leading Central Government defence organisation in Portsmouth, supporting the assurance, automation, and validation of complex, mission critical software systems.

SOFTWARE TESTER (SFIA 4) - PORTSMOUTH - Contract - UP TO £700pd - ACTIVE DV CLEARANCE REQUIRED - 3 DAYS ONSITE

This role sits within a highly regulated engineering environment where software quality is critical to operational confidence and system reliability. You will be responsible for designing and maintaining automated test frameworks, strengthening regression coverage, and ensuring that every release is supported by clear, repeatable and auditable validation evidence. The work is hands on and technical, requiring a strong understanding of both functional and non functional testing in complex software environments.

Key Responsibilities
Own and maintain automated regression test suites across key system components
Design and implem...