Principal Engineer - Mechanical Engineering (Platform Systems)
Confirmed on the employer's own hiring board on Nov 4, 2026. First seen by Alion on Nov 3, 2026. Matchtech scores A on the Alion truth index.
Principal Mechanical Engineer
Location: Coventry
Contract: 6-Month Contract
Hours: 37 hours per week
Working Pattern: Hybrid (2-3 days on site)
The Opportunity
We're looking for an experienced Principal Mechanical Engineer to support the delivery of complex platform systems within a leading Defence & Security organisation.
This role offers the opportunity to work across the full engineering lifecycle, from requirements definition and design through to integration, commissioning and customer acceptance. You'll play a key role in developing mechanical solutions for mission-critical systems while working closely with multidisciplinary engineering teams and customers.
What You'll Be Doing
- Develop mechanical design solutions in line with project timescales, budgets and quality requirements
- Define, manage and verify system, product and platform requirements and acceptance criteria
- Support design, build, integration, installation and commissioning activities
- Produce technical documentation including specifications, calculations, diagrams and design justifications
- Maintain design evidence and requirements traceability within engineering management tools
- Ensure compliance with contractual, safety, environmental and engineering standards
- Lead design reviews and present technical solutions to customers and stakeholders
- Support equipment, system and platform acceptance activities
- Provide technical guidance across the wider engineering team
What You'll Need to Succeed
Essential
- Extensive experience delivering mechanical systems through the full engineering lifecycle
- Strong background in mechanical design, integration, verification and acceptance
- Experience producing engineering calculations, technical specifications and design documentation
- Strong understanding of requirements management and systems engineering principles
- Ability to engage confidently with customers and technical stakeholders
- Experience working within highly regulated engineering environments
Desirable
- Experience specifying diesel generators and associated mechanical systems
- Defence, naval, aerospace or complex platform systems experience
- Experience supporting customer acceptance and commissioning activities
Why Apply?
- Work on complex defence engineering programmes
- Hybrid working arrangement
- Opportunity to influence mechanical system design and delivery
- Exposure to the full engineering lifecycle
- Collaborative and technically challenging environment
What's My Next Step?
If you're a Principal Mechanical Engineer with experience delivering complex mechanical systems in a defence, aerospace or similarly regulated environment, apply now to be considered.