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Salary
$67k – $87k per year
Location
In office (Salisbury)
Seniority
Senior · 5+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 27, 2026. First seen by Alion on Oct 13, 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.

Senior Systems Engineer

Vacancy Reference: CLA- 294

Position: Full-time

Location: Salisbury, Wiltshire, UK

Salary: £50,000 - £65,000

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, the Senior Systems Engineer shall deliver systems engineering outputs across the full engineering lifecycle, including requirements management, system architecture, integration, verification and validation, risk management and stakeholder engagement. The role will work across multidisciplinary teams encompassing software, electronics, mechanical, payload and platform engineering to develop and assure complex UAS capabilities.

Responsibilities

  • Capture, analyse and manage stakeholder, customer and regulatory requirements.

  • Develop and maintain system requirements, architectures, interfaces and design artefacts.

  • Define and execute systems engineering processes across the development lifecycle.

  • Lead system decomposition, functional analysis and allocation of requirements to subsystems.

  • Develop and maintain verification and validation strategies, plans and compliance evidence.

  • Define test requirements and acceptance criteria, supporting integration, qualification and flight test activities.

  • Support system integration activities and resolution of cross-functional technical issues.

  • Conduct requirements traceability, change impact assessments and configuration management activities.

  • Contribute to safety, reliability and risk assessments throughout system development.

  • Produce and maintain technical documentation, including requirements specifications, interface definitions, verification reports and compliance evidence.

  • Support project managers with technical planning, estimating and risk management activities.

  • Interface with customers, suppliers and certification authorities as required.

  • Support manufacturing, test and operational teams with engineering investigations and issue resolution.

  • 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, BEng or Masters Honours degree in an Engineering or Science subject.

Skills and Experience

Essential:

  • Demonstrable experience applying systems engineering principles on complex multidisciplinary systems.

  • Experience of requirements capture, management and traceability.

  • Experience developing verification and validation strategies and plans.

  • Experience supporting system integration, qualification and acceptance activities.

  • Understanding of the systems engineering lifecycle and associated processes.

  • Experience working with requirements and configuration management tools.

  • Excellent problem-solving, communication and stakeholder management skills.

  • Experience producing high-quality technical documentation.

  • Ability to work effectively across multidisciplinary engineering teams.

Desirable:

  • Experience within aerospace, defence, automotive, or other safety-critical industries.

  • Experience in safety engineering, reliability engineering or certification activities.

  • Experience supporting UAS, autonomy, mission systems or airborne systems development.

Personal Attributes

  • Good communicator.

  • Excellent problem-solving ability.

  • Ability to work well in a team.

  • Enthusiastic and self-motivated.

  • 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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