RF Test Technician, Portsmouth

SII Group delivers Digital Services, IT, Engineering, and Consulting to diverse industries, enabling digital transformation through our commitment to Growth, People, and CSR. With over 16,000 professionals across 21 countries, we’re recognised as a “Great Place to Work” for fostering a high-trust culture. Our core values of Trust, Transparency, and Quality drive our work package delivery, ensuring we meet and exceed client expectations as a committed partner.

Since 2016, SII UK has supported top Aerospace & Defence, Aviation, Transportation, and Finance clients, empowering digital transformation with industry‑leading engineering expertise.

Let’s Tech Together is our promise to encourage innovation and teamwork. We support our engineers with development opportunities and a collaborative, inclusive environment where every voice is valued and empowered.

We are seeking an RF Test Technician to support the delivery of complex, mission‑critical systems within a highly regulated engineering environment. You will play a key role in the integration, validation, and testing of RF systems, supporting both development and qualification activities.

• Perform RF testing activities in line with defined procedures and requirements
• Conduct measurements including return loss and insertion loss
• Set up and test RF harnesses and associated hardware
• Support integration and validation of RF systems and sub‑systems
• Operate and configure RF test equipment (e.g. spectrum analysers, signal generators, network analysers)
• Carry out calibration activities on test equipment and systems
• Capture, analyse, and document test data using data acquisition systems
• Assist in fault finding, diagnostics, and root cause analysis of RF issues
• Produce and contribute to Test Plans, Test Procedures, and Test Reports
• Ensure all testing activities comply with quality and safety standards
• Collaborate with systems, design, and manufacturing teams

• Hands‑on experience in RF testing within a lab or production environment
• Experience measuring return loss and insertion loss
• Experience testing RF harnesses and cable assemblies
• Understanding of RF principles (frequency, impedance, signal behaviour, etc.)
• Experience with RF test equipment and calibration processes
• Ability to interpret technical drawings, test specifications, and procedures
• Strong fault‑finding and problem‑solving skills
• Good communication skills and ability to work within a multi‑disciplinary team

• Experience within aerospace, defence, or space sectors
• Familiarity with environmental or qualification testing
• Experience with tools such as Dewesoft, DASYLab, or LabVIEW
• Understanding of system‑level integration and testing

• Competitive Basic Salary
• 6 % Employer Contribution + 6 % as a salary sacrifice
• Private Medical Insurance, Life Cover and Income Protection
• 25 days holiday
• 10 days full sick pay per year
• Flexible working
• Cycle to Work & TechScheme
• Continuous professional development
• Corporate access to the Udemy platform

If you are applying for a role that requires security clearance, please be aware that foreign or dual nationality is not an automatic bar, however certain posts may have restrictions which could affect those who do not have sole British nationality or who have personal connections with certain countries outside the UK.