Principal Mechanical Design Engineer (Hybrid)

Marstep Resourcing Solutions

Wallingford

Hybrid

GBP 59,000 - 72,000

Full time

3 days ago

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Benefits offered by this job

Pension scheme

Structured career development

Professional accreditation support

Training & development investment

Twice-yearly salary reviews

Life assurance & health cover

Hybrid working

Travel opportunities

Job summary

Marstep Resourcing Solutions is seeking a Principal Mechanical Design Engineer to join a high‑calibre engineering team hybrid working arrangement. You will act as technical authority across multiple projects and shape engineering excellence.

The role offers a highly enhanced package with structured development, accreditation support and a clear progression path, as you mentor engineers and engage with clients and suppliers.

Qualifications

Degree or Master’s in Mechanical Engineering (or equivalent) with design delivery experience.
Extensive 3D CAD experience using Creo or SolidWorks.
Significant GD&T, limits & fits, and design for manufacture knowledge.
Strong fundamentals in mechanics, dynamics and materials.
Experience with motors, rotating machinery, actuation systems, bearings and seals.
Experience leading technical decisions and providing specialist guidance.
Chartered Engineer status or working towards registration.
Proactive, innovative and solution-focused.
Strong analytical and problem-solving capability.
Able to work independently and exercise sound judgement.
Strong communication skills and a hands-on approach.
Flexible across multiple projects and mentoring engineers.

Responsibilities

Act as the technical authority within areas of recognised expertise.
Lead the development, review and approval of complex mechanical designs, analyses, specifications and documentation.
Provide expert technical guidance and support throughout the engineering lifecycle.
Lead and participate in technical, design and gate reviews.
Ensure compliance with legislation, standards, codes of practice and procedures.
Identify, assess and mitigate technical risks and implement mitigation measures.
Support project planning, estimation and decision-making with specialist knowledge.
Develop and promote engineering standards and best practice.
Mentor and develop engineers and transfer knowledge.
Engage with clients, suppliers, contractors and internal stakeholders on complex technical matters.
Support business development, bidding and strategic initiatives.
Act as escalation point for significant technical issues and provide recommendations.

Skills

Creo

SolidWorks

GD&T

Rotating machinery

Mentoring

Leadership

Problem solving

3D CAD

Communication

Education

Degree or Master’s in Mechanical Engineering

Chartered Engineer status or working towards

Tools

Creo

SolidWorks

Job description

Principal Mechanical Design Engineer

Hybrid | Salary up to £65,000, Excellent Benefits + Structured Career Development Programme

An outstanding opportunity has arisen for a Principal Mechanical Design Engineer to join a highly skilled engineering team as a recognised technical authority. This senior role offers hybrid working, a highly enhanced benefits package, and a clear, structured career development pathway with full accreditation support.

If you're an experienced engineer who thrives on technical leadership, complex problem‑solving and shaping engineering excellence, this role provides the platform to make a significant impact.

The Role

As a Principal Mechanical Design Engineer, you will act as a technical authority, providing expert engineering leadership, governance and strategic direction across multiple projects.

Key responsibilities include:

Acting as the technical authority within areas of recognised expertise
Leading the development, review and approval of complex engineering designs, analyses, specifications and technical documentation
Providing expert technical guidance and support throughout the engineering lifecycle
Leading and participating in technical, design and gate reviews
Ensuring compliance with legislation, standards, codes of practice and company procedures
Identifying, assessing and managing technical risks, implementing mitigation measures
Supporting project planning, estimation and decision‑making with specialist knowledge
Developing, maintaining and promoting engineering standards and best practice
Mentoring and developing engineers, supporting competency growth and knowledge transfer
Engaging with clients, suppliers, contractors and internal stakeholders on complex technical matters
Supporting business development, bidding and strategic initiatives
Acting as an escalation point for significant technical issues and providing recommendations for resolution

About You

Essential Skills & Experience

Degree or Master's in Mechanical Engineering - Will consider HND or equivalent with a proven track record in the design, development and delivery of complex mechanical systems.
Extensive 3D CAD experience (ideally Creo or SolidWorks), including generating, reviewing and approving designs
Significant experience in GD&T, limits & fits, and design for manufacture
Strong knowledge of mechanical engineering principles (mechanics, dynamics, materials)
Extensive experience with electric motors, rotating machinery, actuation systems, bearings and seals
Experience leading technical decision‑making and providing specialist guidance
Experience reviewing and approving engineering designs, calculations and documentation
Chartered Engineer status or working towards professional registration
Technically inquisitive, innovative and solutions‑focused
Strong analytical and problem‑solving capability
Able to work independently and exercise sound engineering judgement
Strong communication skills with the ability to convey complex technical information
Practical, hands‑on approach
Flexible and adaptable across multiple projects
Committed to mentoring and developing engineers