Principal Mechanical Design Engineer

Company: Marcus Webb Associates Limited

Location: Southampton

Posted: April 28th, 2026

Principal mechanical Design Engineer Hampshire, UK (hybrid)

This role is focused on the design of large steel structures for marine applications.

As principal mechanical / structural engineer you will take ownership of the design or large-scale mechanical systems for ship based sustainable marine technologies. The mechanical / structural engineer will be able to work effectively in a start-up environment. Exciting prospects for growth and development lay ahead.

About the Role:

This is an exciting opportunity to lead the development of sustainable product technologies within a growing and forward-thinking start-up. The company has developed cutting-edge systems to aid ship propulsion whilst reducing emissions and fuel consumption.

The role will involve the design and analysis of large-scale steel structures - concept analysis. 3D / 2D design, FEA, structural analysis and supporting product development through test, validation and into production.

Skills / Knowledge Required: Principal Mechanical / Structural Design Engineer

Others (beneficial):

This role will be based in Southampton, Hampshire, and the company offers hybrid working (min 3 days in the office). People located in and around Southampton, Basingstoke, Fareham, Portsmouth, Guildford, Farnborough, etc, could potentially make this work.

Relocation and work visa support could be available for the right person.

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