Mechanical Test Engineer in Portsmouth

Salary: £40,000 - £50,000 DOE

Full Time Permanent

Who we are

SubSea 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

• Leading the development and execution of engineering prototype test activities
• Manage the development of prototype test procedures, ensuring that all test procedures are developed in line with the system requirements
• Creation and management of comprehensive test documentation to fully capture and communicate all test activities, non‑compliances, results and recommendations, to feed into the design cycle and quality management system
• Development of bespoke test solutions, in order to validate prototype products meet customer requirements
• Working flexibly with the engineering and operations teams to ensure test results and documentation is delivered on time
• Identify and propose solutions to address gaps in prototype testing capabilities
• Leading the implementation of the highest safety standards for test and evaluation
• Working collaboratively with established partner organisations to deliver robust integration of test plans within defined timelines

Qualifications and Experience Required:

• Degree level qualification in Mechanical / Electrical Engineering or similar
• Any additional qualifications or certifications in the areas of safety, lifting, process control, fluid power, technical documentation, pressure systems, environmental testing, high and low voltage electrical assembly / test are all desirable
• Professional registration (e.g. CEng) or progression towards is advantageous
• Test and validation experience, both physical test and theoretical analysis
• Comfortable using hand tools to assemble and test prototype equipment.
• Demonstrable history of excellent technical communication, both written and verbal
• Maritime experience is a plus, but whatever your track record, high levels of technical expertise, personal drive and strong communication skills are particularly important.
• Experience of safe assembly and testing of pressure systems, including fluid power, would be beneficial.
• Knowledge and experience of data acquisition and instrumentation
• Experience in the use of CAD / CAM software and the operation of CNC machines would be beneficial.

Note: Due to the nature of work undertaken at SubSea 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.