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Principal Avionics Engineer

Callen-Lenz · Salisbury, United Kingdom · Hybrid

Posted Sep 18, 2026

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Principal Avionics Engineer Vacancy Reference: CLA- 440 Position: Full-time Location: Salisbury, Wiltshire, UK Salary: £60,000+ DOE At Callen-Lenz, we are expanding the limits of what is possible. We specialise in crewed and uncrewed aircraft operations and technology and having recently received investment into the business we are going through a period of rapid growth and development and are looking for key roles to assist with these changes. Callen-Lenz offers innovative and customer-focused UAS solutions through our 4 key business strands: technical services, products, platforms and operational services. We are looking for individuals to help drive forward our expansion, placing you at forefront of UAS development in the UK. Our Values Innovation Integrity Collaboration Excellence Why Work for Us Based in the heart of rural Wiltshire, close to the Historic city of Salisbury you will join our rapidly growing, friendly and multi-disciplined team, working on a range of diverse and interesting projects, leading the way in this exciting field and witnessing the full lifecycle of our products. The Callen-Lenz team are passionate about what we do, and we are searching for individuals to grow with us as we expand into the aerospace industry. Our benefits include: 25 days annual leave per year (plus bank holidays) Buy/Sell holiday policy up to 5 days either way Pension Scheme via Royal London Company contributed Share Incentive Plan. Green Car Scheme Life assurance scheme (6x basic salary) Income protection policy (75% of basic salary) Private Health Insurance via Bupa Private Dental insurance via Bupa Enhanced Maternity and paternity 1 Professional membership reimbursed per year 1 paid volunteering day per year Access to an independent financial advisor year round Training & development opportunities About the role Reporting to the Avionics & Test Engineering Manager, you will deliver avionic systems engineering outputs as part of a wider avionics & test engineering team. Providing technical leadership over all aspects of design, development and integration engineering associated with control, navigation, communication, aircraft management and C2 systems. Responsibilities Design and development of avionics systems for unmanned air systems, including navigation, power, communication, payloads, aircraft management, and command & control (C2) systems. Integration of systems, including other air vehicle systems such as power plant, fuel systems and payloads. Lead engineering involvement to projects, interfacing with internal and external stakeholders. Work with the Avionics & Test Engineering Manager to create and improve internal processes and procedures. Supervise, guide and support other engineers across involved projects. Support the definition and delivery of key company programmes to ensure technical compliance with specification and to maintain excellent…