Senior Mechanical Design Engineer

About the Organisation

An established engineering company is seeking a Senior Design Engineer to join its team in Portsmouth. The organisation delivers specialist engineering solutions to high-performance sectors such as aerospace and defence, offering a full end-to-end service from concept development through to production.

With a strong reputation for quality, innovation, and dependability, the company fosters a collaborative environment where engineers can contribute to cutting-edge projects while developing their professional skills.

Role Overview

The Senior Design Engineer will take ownership of design activities across a range of projects, ensuring solutions meet technical, safety, environmental, and regulatory requirements. The role involves participation in design reviews, close collaboration with cross-functional teams, and providing mentorship to junior engineers. You’ll help ensure that all outputs are robust, manufacturable, and aligned with customer and industry standards.

Key Responsibilities

* Lead design and development work from initial concept through to production and post-production support.

* Ensure compliance with contractual, regulatory, and quality standards.

* Produce and maintain drawings, specifications, and documentation in line with relevant standards (e.g., BS8888, DEF STAN 05-10).

* Review and sign off engineering documentation as part of the design approval process.

* Participate in and contribute to design reviews.

* Work collaboratively with analysis, manufacturing, integration, safety, and trials teams.

* Support the preparation of technical publications and deliverable documents.

* Mentor and guide junior engineers to support their development.

* Process engineering change requests and concessions in line with internal procedures.

* Contribute to continuous improvement and optimisation of design processes.

What We’re Looking For

* Degree in Mechanical, Aerospace, or a similar engineering discipline (or equivalent experience).

* Proven design engineering experience within a regulated sector (aerospace, defence, medical devices, etc.).

* Strong CAD capability (Solid Works preferred but not essential).

* Excellent problem-solving skills and strong communication abilities.

* A motivated, conscientious individual with leadership potential.

What’s on Offer

* Competitive salary and comprehensive benefits package.

* Pension contributions (4% employer / 4% employee).

* Discretionary annual bonus scheme.

* Opportunities for career development and professional growth.

* Supportive and collaborative team environment.

* Holiday entitlement: 185 hours annually (including Whitsun and Christmas shutdowns; excluding bank holidays).

* Working hours:

* Mon–Thu: 07:30–16:00

* Fri: 07:30–12:30