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Salary
$80k per year
Location
In office (Salisbury)
Seniority
Principal · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Nov 9, 2026. First seen by Alion on Sep 18, 2026.

Overview
Company
Impact
Profile match
Callen-Lenz is an aviation technology company that specialises in crewed and uncrewed aircraft operations and technology and is in a period of rapid growth after recent investment. Its postings cover flight control and autopilot software engineers, front end developers, data architects, database administrators and unmanned aircraft training managers, mostly at Salisbury with roles in Bristol. The company is headquartered in Salisbury, England, United Kingdom.

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 Systems Engineering Manager, you will deliver avionic systems engineering outputs as part of a wider systems 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

  • Support the definition and delivery of key company programmes to ensure technical compliance with specification and to maintain excellent engineering practice.

  • Lead engineering involvement to projects, interfacing with internal and external stakeholders.

  • Work with the Systems Engineering Manager to create and improve internal processes and procedures.

  • Supervise, guide and support other engineers across involved projects.

  • Support the implementation of airworthiness, safety and certification requirements applicable to the design and at the appropriate level for the project and/or product.

  • Capture, derive and manage requirements to the appropriate level.

  • Design and development of avionics systems for unmanned air systems, including, navigation, 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.

  • Generate resource and budget estimates for engineering activities, working with project management and business development teams.

  • Perform other related duties as required.

Health & Safety

  • Demonstrate in daily activities a commitment to health and safety in the workplace by always ensuring tasks are performed in the safest possible manner.

  • Report all hazards and incidents that the individual is party to, or observes, in the correct manner.

  • When required or directed, participate in any health and safety training.

Qualifications

  • A BSc or Masters Honours degree in an Engineering or Science subject.

Skills and Experience

Essential:

  • Proficiency in spoken and written English.

  • Demonstrable knowledge of systems engineering, preferably in aerospace.

  • Knowledge of applied system engineering principles.

  • Competent in practical integration tasks either using software or hardware-based rigs.

  • Excellent communication and presentation skills.

  • Report writing and information dissemination/presentation.

Desirable:

  • Design or systems engineering experience in UAS and associated systems.

  • Systems engineering experience through the whole lifecycle in an aerospace or related environment.

  • Familiarity with common engineering tools, for example DOORS, Solidworks, MATLAB or equivalents.

  • Knowledge of related aerospace and equipment qualification standards, including Mil-Stds, RTCA or equivalent.

  • Knowledge of safety critical systems.

Personal Attributes

  • Has a strong interest in aviation.

  • Excellent communication skills and problem-solving ability.

  • Enthusiastic, self-motivated and able to work well in a team.

  • Must be a British Citizen or have an existing right to work in the UK.

  • Ability to commit to occasional national and international travel.

  • A full valid UK driving license.

  • Ability to hold Security Clearance - 5 years residence in the UK.

Callen-Lenz is an equal opportunities employer, committed to building an inclusive working environment. We welcome applications from all suitably qualified persons regardless of their race, sex, disability, religion/belief, sexual orientation, or age. It is essential that the successful candidate must, by the start of their employment have permission to work in the UK. Proof of identity and eligibility to work in the UK will be required prior to commencement of employment.

Please be aware that many roles at BAE Systems are subject to both security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation. All applicants must as a minimum achieve Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting where applicants must typically have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.

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