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SubSea Craft

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Associate Mechanical Design Engineer

Portsmouth, HampshireFull-timePosted Nov 5, 2026

Job description

Salary: £35,000- £40,000DOE Full Time Permanent Who we are: Sub. Sea Craft is a fast growing, privately-funded, UK-based innovative maritime technology company specialising in next-generation, high-performance watercraft and systems. We operate at the intersection of advanced engineering, cutting-edge design, and user-centric innovation, delivering safe, effective, and enabling solutions for both commercial and defence applications.

What we offer

Annual Leave – Entitlement to 25 days of annual leave plus bank holidays Wellbeing Day

  • An additional Wellbeing Day each year to focus on personal health and wellbeing. Private Healthcare – Access to comprehensive private healthcare coverage to support your physical and mental wellbeing. Life Assurance and Critical Illness Cover – Comprehensive protection including Life Assurance (4x salary) and Critical Illness Cover for added financial security. Family Leave – Enhanced maternity and paternity pay Christmas Leave – A Christmas shutdown is typically observed. Professional Development – Commitment to ongoing learning and career growth, supported by training programmes and access to LinkedIn Learning. Pension Contribution – pension scheme with the option to contribute via salary sacrifice Flexible Working – Opportunities for flexible working arrangements to promote work–life balance. Inclusive Culture – A professional environment that values diversity, innovation, and collaboration.

Responsibilities

Assist in creating 2D and 3D CAD models of mechanical parts and assemblies. Work with engineers to carry out basic design calculations and simulations under supervision. Engage in peer reviews, team meetings, and multidisciplinary collaboration. Learn through hands-on experience, mentoring, and continuous feedback. Maintain accurate and up-to-date design records.

Participate in material selection processes, testing and prototype builds. Support the team in developing and reviewing design documentation, specifications, and reports.

Qualifications

A degree in Mechanical Engineering or a related discipline or a completed modern apprenticeship would also be of interest. Ability to communicate design ideas clearly through sketches and presentations. Good understanding of engineering principles, materials, and manufacturing processes. Right to live and work in the UK.

An interest in working in the maritime or defence sectors. A proactive, curious mindset with a willingness to learn. Proficiency in CAD tools such as Solid. Works or Inventor. Note : Due to the nature of work undertaken at Sub. Sea Craft, the selected candidate must be capable of meeting the security requirements of the position, which would include as a minimum existing right to live and work in the UK, Baseline Personnel Security Standard (BPSS), with UK National security clearance required for certain roles.

  • Values: Our people are our greatest asset, we continually strive to provide an excellent working environment to enable our team to do their best work. We have an agile professional workforce: we are founded on the belief that our people are valued and our business is trusted, inclusive and commercially-adept. What we expect from you: Teamwork, mutual respect and collaboration Initiative and independent working Honesty and integrity Business and commercial awareness Agility, adaptability and continuous development We are committed to building an inclusive, diverse workplace where everyone can thrive.

If you require any support or adjustments to interact with us, please let us know. * Please note that all offers of employment are conditional and subject to satisfactory DBS, driving licence and reference checks. A criminal record will not automatically disqualify candidates from employment. We will consider criminal record information alongside the wider range of evidence gathered at the application, interview, and pre-employment checking stages.

Due to the high volume of applications, we are unable to respond to everyone. If you are shortlisted, we will aim to contact you within 14 days of your application or the closing date (if stated). We may retain your details for future suitable roles unless you advise us otherwise. For details of how we process your personal data, please refer to our Privacy Notice .

Description copied from SubSea Craft's careers page. Read the full posting before you apply.

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