Graduate Software Engineer

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 Vitality
• 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

We are seeking a talented and passionate Engineering Graduate to join our expanding Software Engineering function. In this role you will report to one of our Software Engineering Team Leads and play a key part in the team working across our Autopilot, Mission Systems and Ground Control Station products, supporting a variety of unmanned platforms. Depending on your background and areas of interest, you could contribute to embedded firmware, mission system applications, guidance, navigation and control, or testing and verification. You will support the wider team as well as having the autonomy to work alone and will be provided with in‑house training and on‑the‐job training & development.

Responsibilities

• Contribute to the development of proprietary and open‑source flight control software.
• Assist those within your team and manage your own output to ensure tasks are completed in required timeframes.
• Assist with ground and flight testing.
• Ensure quality is maintained by contributing to peer reviews.
• Ensure solutions meet requirements, standards and timescales.
• Communicate effectively with colleagues ensuring difficulties are identified and resolved quickly.
• Contribute to planning, demos and retrospectives.
• Perform other related duties as required.

Health and 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

An upper second‑class (2:1) or above BSc or Master Honours degree in an Engineering or Science subject.

Essential Skills and Experience

• Experience in one or more of the following areas of software development:

• Embedded firmware development using C, Rust or similar.
• Real Time Operating Systems.
• Web application development using TypeScript, Go, React or similar.
• Model based development using MATLAB Simulink or similar.
• Embedded or application testing & verification using tools such as Python, Playwright or similar.
• Working collaboratively in a team.
• Experience of the software development lifecycle.
• Creating software from requirements, including design, implementation and testing.
• Proficiency in spoken and written English.

Desirable

• Exposure to version control tools such as GitHub or Gitlab.
• Experience with issue tracking tools such as Jira or Trello.
• An understanding of development methodologies.
• Working to coding and/or certification standards.
• Requirements verification and validation experience.
• An interest in drones or aviation.

Personal Attributes

• Must be a British Citizen or must have an existing right to work in the UK.
• Ability to live near and work in Salisbury, Wiltshire UK.
• UK driving licence and ability to commit to occasional national travel.
• 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 Callen‑Lenz 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.