Software Test Engineer - SC Cleared Location: Portsmouth | Hybrid (3 days on-site) Clearance: SC Clearance Required Duration: 12 Months Rate: £60 / hr A world class technology company are seeking a Software Test Engineer to join a specialist team, developing a cutting-edge satellite communications Software Defined Radio (SDR) modem. You'll be integral to testing the software aspects of this complex system, designing, implementing, and automating integration tests within a multi-disciplinary environment (Software, Firmware, Systems). Key Responsibilities: Architect, document, and implement integration tests for SDR modem software. Define and execute verification & validation activities. Automate testing using Linux tools and device interfaces (SNMP, HTTP). Diagnose software issues in a lab environment. Essential Skills: Proven integration testing experience (architecting & implementing). Experience with test frameworks (e.g., Robot Framework, GoogleTest, Catch2). Strong Linux command-line & scripting skills for test automation. Device automation via management interfaces (SNMP, HTTP). Proficiency with Git. Desirable: SysML/UML; Agile/Scrum (Jira); Jenkins; UI testing (HTML/CSS/JS); Node.js/Python automation