Overview
Join to apply for the Mechanical CAD Designer role at SII Group UK
The opportunity is to join a team responsible for developing and maintaining mechanical designs for an established product line within a multinational Defence company. The role involves creating new designs and updating existing ones. The position is based at the Client's site in Crawley with a hybrid working arrangement.
Let’s Tech Together is our promise to encourage innovation and teamwork, supporting engineers with development opportunities in a collaborative, inclusive environment where every voice is valued.
Responsibilities
* Create and modify detailed 3D models and 2D drawings in line with project and defence standards
* Ensure updates are correctly integrated into the design baseline, supporting configuration management
* Interpret requirements and translate them into mechanical design solutions
* Investigate legacy design data to support rework, updates, or enhancements
* Support prototype builds and design verification activities
* Maintain and update Bills of Materials (BOMs) as required
* Liaise with suppliers and internal teams to resolve design-related issues
* Attend daily stand-ups and report progress and blockers
* Support the integration of mechanical designs with other disciplines (electrical, systems)
Experience and Skills
Essential:
* 3–5 years of experience in a mechanical CAD engineering role
* Experience in Defence, Aerospace, or other regulated industry sectors
* Proficient in at least one mainstream 3D CAD tool (e.g., NX, SolidWorks, Creo)
* Familiarity with configuration and change control processes
* Comfortable working with legacy data and reverse engineering techniques
* Understanding of mechanical tolerancing and material properties
* Autonomous and organised, with strong attention to detail
* Familiar with relevant standards
* Team-oriented, communicative, and professional in a client-facing environment
Desirable:
* Current or recent UK Security Clearance (SC); security-cleared candidates will be well-positioned for this role
* Exposure to design verification and validation activities
* Knowledge of manufacturing processes (CNC, sheet metal, casting, etc.)
* Awareness of thermal, shock, and vibration considerations in mechanical design
* Familiarity with drawing control and release processes in defence programmes
* Experience with FEA or design analysis tools
Values, Diversity & Inclusion
We are committed to building an inclusive and diverse workplace. Applications are strongly encouraged from women, individuals from minority backgrounds, and candidates from non-traditional engineering routes. If you meet most but not all of the listed criteria, we still welcome your application.
Benefits
* Competitive Basic Salary
* 6% Employers Contribution + 6% as a salary sacrifice
* Private Medical Insurance, Life Cover and Income Protection
* 25 days holiday
* 5 days full sick pay per year
* Flexible working
* Cycle to Work & TechScheme
* Continuous professional development
* Corporate access to the Udemy platform
For roles requiring security clearance, note that foreign or dual nationality is not an automatic bar, but certain posts may have restrictions which could affect those who do not have sole British nationality or who have personal connections with certain countries outside the UK.
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