Principal Mechanical Engineer

Salisbury, Wiltshire

Callen Lenz
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Principal Mechanical Engineer

Vacancy Reference: CLA- 340

Position:
Full-time Part-time

Location:
Salisbury,
Wiltshire,
UK

Salary
Range:
£60-65,000 per annum depending on relevant experience

At Callen-Lenz, we are expanding the limits of what is possible. We specialise in
crewed
and
uncrewed aircraft
operations
and
technology, and h aving 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

Teamwork

Commitment

Initiative

Creativity

Agility

Integrity

Enjoyment

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

As a Principal Mechanical Engineer, you will report to a Team Leader and work within a multi-disciplined project team. You will lead teams of multidisciplinary engineers to deliver solutions to complex design and integration problems to meet project requirements. You will take ownership of internal capability development and continuous improvement activities within the department.

Lead a multidisciplinary engineering team to undertake challenging air vehicle design, integration and test activities throughout the engineering lifecycle in one or more of the following:
  • Structural design and / or mechanical system design
  • Composite design and analysis
  • System / payload integration and test
  • Propulsion integration covering electric / ICE / small gas turbine
  • Loom design and integration (including routing & clipping)
  • Design For Manufacture and production support activities
Responsibilities

Communicate effectively with colleagues, customers and suppliers, efficiently planning / allocating tasks to team members, identifying / resolving complex issues
  • Mentor junior staff ensuring an appropriate level of technical direction and guidance is provided commensurate with their experience
  • Own the capture and derivation of requirements, developing overall solutions that meet internal and external customer needs within required timescales
  • Prepare material for, and lead / Chair, internal and customer facing design reviews as required, coordinating and collating multidisciplinary inputs
  • Maintain Configuration Management of project-level design data and written documentation to satisfy internal and external requirements
  • Review and approve engineering artefacts including design data and technical documentation, providing feedback for improvement as required, working to required standards e.g. BS:8888 and good GD&T principles
  • Support supply chain with identification and technical management of suppliers, including devising packages of work for outsourcing
  • Support manufacturing and build teams with engineering queries through close liaison and approving of updates to design data
  • Plan and execute item, sub-system, and air vehicle-level test activities, resolving issues and producing formal test reports
  • Guide team members in the production of design concepts that remove or minimise hazards, identifying and incorporating industry good practice
  • Champion improvements in our company culture in areas such as Health and Safety, Quality, Continuous Improvement
  • Lead project resourcing discussions and planning based on own team members workload and development needs
  • Work with Team Leader / Engineering Manager to define recruitment needs, supporting candidate review, interview and onboarding activities
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.
  • Perform other related duties as required
About You

Qualifications

Bachelor's or Master's degree, with Honours, in an Engineering or Science subject

Skills and competencies

Ownership of projects, adept at working with customers, partners and suppliers, taking a holistic view of issues, appreciating complexity.
As a Subject Matter Expert or in a more generalist capacity, can lead and mentor others.

Essential:
  • Excellent communicator, able collaborate and influence effectively at all levels
  • Provision of effective technical leadership of cross-functional engineering teams
  • Self-starting with demonstrable project-level organisational and planning skills
  • Ability to provide on-the-job mentoring of team members
  • Demonstrable problem-solving ability, working with others to tight timescales
  • Demonstrable experience of working within an engineering life cycle(s)
  • Substantial experience of using SolidWorks or a comparable CAD package
  • Demonstrable application of design for manufacture principles
  • Experience of developing and enhancing customers / supplier relationships
  • Excellent technical writing and compelling presentation skills
  • Experience of checking and approving technical reports and design data
  • Routine application of first-order calculations to support design decisions
  • Experience of applying Configuration Management in an engineering environment
Desirable:
  • Structural design, analysis and test, including composite materials
  • Design, integration and test of electro-mechanical systems, including powerplants
  • Electrical and avionics systems integration experience
  • Experience of 3D printing, CNC milling and composite manufacture
  • Experience of tool / jig design for composite moulds (or similar)
  • Experience of full design cycle for volume production
  • Knowledge and application of civil / military aerospace standards
  • Systems Engineering experience, preferably within an aerospace context
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

Date Posted: 16 May 2025
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