Principal Marine Engineer

Position: Principal Marine Engineer

Job ID: 3423/4

Location: Segensworth, Hampshire

Rate/Salary: £50,000 - £65,000 

Benefits: Competitive 

HSB Technical Ltd is a specialist recruiter within the Power & Propulsion, Shipbuilding, Maritime Shipping, Energy, and Subsea sectors – visit (url removed) for a full list of our current vacancies. We work with multiple leading businesses across the UK and overseas to recruit for both permanent and contract roles.

The below job description outlines the position of: Principal Marine Engineer

Typically, this person will be responsible for the specification, integration, and detailed design of primary onboard maritime systems for a portfolio of vessels ranging from 2 to 20 metres. These are cutting-edge power craft projects primarily for the Ministry of Defence, employing advanced technology inspired by Formula 1 and Formula 2 racing powerboats, resulting in innovative, high-performance platforms. The role combines technical expertise with hands-on design work using Siemens NX to contribute directly to system layouts, production data, and project documentation.

About the company:

HSB Technical’s client is a leading and innovative business recognised for delivering state-of-the-art high-speed power craft for the MOD. Their technology draws heavily on the high-performance principles of Formula 1 and Formula 2 powerboat engineering, setting the standard for next-generation defence maritime platforms.

Duties and responsibilities of the Principal Marine Engineer:

• Specify, integrate, and design primary onboard systems including propulsion, bilge, fire, hydraulics, and HVAC for vessels between 2 and 20 metres.

• Develop detailed cable and piping routing using Siemens NX master general arrangements (GA).

• Produce and maintain primary equipment lists, P&IDs (Piping and Instrumentation Diagrams), and input into Materials Resource Planning (MRP) Bills of Materials (BOM).

• Use initiative and expert judgement to devise effective solutions to technical challenges in system design and integration.

• Maintain proficiency with relevant IT and technical tools essential for detailed engineering design and documentation.

• Act with professionalism, integrity, and in the best interests of the business at all times.

• Collaborate closely with internal teams, sub-contractors, and suppliers to ensure design compliance and production readiness.

• Liaise directly with shipyard shop floors to manage design changes, updates, and as-built documentation for in-house and outsourced work.

• Manage time efficiently to maximise productivity and meet demanding project deadlines.

• Carry out additional duties as requested by senior management to support business growth and innovation.

Health & Safety responsibilities:

• Maintain a clean, safe working environment compliant with health and safety policies and best practices.

• Ensure all equipment used is safe, electrically tested, and has all necessary guards and interlocks in place.

• Adhere to company safety processes to protect personal and colleague wellbeing.

• Report any health and safety hazards or violations to line management or the QHSE Manager immediately.

• Use and maintain PPE/workwear, reporting replacements as required.

Qualifications and requirements for the Principal Marine Engineer:

Essential skills, knowledge and experience:

• Proven experience in maritime systems design and integration across propulsion, bilge, fire, hydraulics, HVAC, and related systems.

• Competence modelling systems and producing production information using Siemens NX.

• Experience liaising with relevant regulatory bodies to ensure compliance.

• Strong ability to work closely with shipyard shop floors to manage design changes and “as fit” updates both in-house and outsourced.

Desirable skills, knowledge and experience:

• 3D CAD modelling experience in Siemens NX.

• Electrical system design knowledge.

• Familiarity with Teamcenter Product Data Management (PDM).

• Experience in configuration control and documentation management.

• Mentoring and development of junior engineering staff.

This vacancy is being advertised by HSB Technical Ltd who have been appointed to act as a recruitment partner for this role