Senior / Principal Mechanical Design Engineer

AtkinsRéalis; Derby; On-site; GBP 50,000 - 75,000; Full time

Job summary

A global consultancy seeks a Senior / Principal Mechanical Design Engineer for diverse energy projects in Derby. The role involves leading teams, managing complex engineering challenges across nuclear and renewable sectors, and delivering innovative solutions. Ideal candidates are degree-qualified engineers with expertise in design codes and project leadership, committed to contributing positively to UK's energy security.

Benefits

Flexible total reward package

Support for career planning

Health benefits

Qualifications

• Degree qualified mechanical engineer (or relevant qualification).
• Experience with design codes such as ASME, Eurocodes, BS EN13001.
• Ability to liaise and influence stakeholders at all levels.

Responsibilities

• Lead projects and teams, ensuring delivery on time and within budget.
• Manage design activities, including CAD designs and calculations.
• Oversee technical documents and support commercial matters.

Skills

Design codes

Requirements capture

Supervising studies

Technical documentation

Stakeholder influence

Project leadership

Education

Degree in Mechanical Engineering

Job description

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Senior / Principal Mechanical Design Engineer, Derby

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EU work permit required:

Yes

Job Reference:

5f6fd2a2e610

Job Views:

12

Posted:

22.06.2025

Expiry Date:

06.08.2025

Job Description:

Job Description

Are you a Mechanical Design Engineer who thrives on leading the way on solving difficult engineering problems? Are you drawn to complex projects and excited by the opportunity to rapidly progress your technical leadership skills to the next level, heading up multi-disciplinary projects?

If so, you might enjoy solving the energy industry’s most important mechanical engineering conundrums for a multitude of energy systems across a variety of clients. You could be managing exciting projects designing test rigs in support of the development of the UK's nuclear fusion capabilities, carrying out structural integrity assessments of primary plant (for both civil and defence applications) to keep existing fleet generating, designing high integrity structures for new nuclear establishments, or leading renewable energy projects across a growing carbon net zero portfolio. You’re likely to be juggling several projects simultaneously, so enjoying being adaptable is a must! The constant in this role is the complex nature of the jobs and the chance to provide innovative solutions to a range of problems for several clients.

Whichever energy-related projects you get involved in, you’ll be engaged in developing engineering solutions to industry’s most challenging problems, making an important contribution to UK energy and environmental security.

If you are a self-starter who can deliver multiple projects, working closely with clients and internal teams to capture requirements, set up projects, and deliver right-first-time solutions, then we’d love you to apply.

Read more about how you can thrive with us.

Role Requirements:

You will deliver projects, lead teams and programmes, or work directly for our clients embedded into their major programmes. To benefit from the collective experience of the team and our clients, and drive innovative thinking, you’ll work in a collaborative and supportive office/site environment for at least half of your working week. You will bring sound commercial awareness when supervising teams to effectively deliver tasks across multiple workstreams, ensuring delivery on time, within budget, and to quality standards.

Your work will be diverse and challenging, including overseeing and checking code-compliant calculations, reviewing and approving technical documents, managing design activities and outputs (CAD designs and drawings), and liaising with project managers and directors to support commercial matters and bidding activities.

We succeed by working closely with our clients, matching our skills to their needs, being flexible, and using resources efficiently. Whether delivering engineering services or programme management, we always aim to provide the right solution.

• Degree qualified mechanical engineer (or relevant qualification).
• Experience with design codes such as ASME, Eurocodes, BS EN13001, RCC-M, HS&E legislation.
• Experience in requirements capture, including functional, non-functional, stakeholder, and regulatory requirements.
• Experience supervising optioneering studies to generate design solutions.
• Experience reviewing mechanical engineering substantiation for new designs or existing plant.
• Experience writing, reviewing, and approving technical reports and documentation (e.g., design calculations, safety case reports).
• Ability to liaise, present, and influence stakeholders at all levels internally and externally.
• Proven track record of leading successful engineering projects with varying team sizes.
• Experience in delivering mechanical engineering solutions responsibly.

Additional Experience (desirable but not mandatory):

• Experience in bids within safety-critical and regulated environments.
• Nuclear industry knowledge and safety case understanding.
• Experience with hazard/fault identification studies such as HAZOP, FMEA.
• Chartered status or nearing application with a relevant professional institute.

Why work for AtkinsRéalis?

The UK aims for Net Zero by 2050. Our nuclear and clean energy teams ensure a mix of sustainable energies to meet future demands. We work on innovative projects across nuclear power, renewables, decarbonisation, and energy efficiency, creating safe and resilient systems.

Learn more about our Vision for Women.

Meeting your needs:

Our 'Total Reward' package is flexible to suit your lifestyle and career needs, including holidays, health benefits, and career planning. Please inform us of any disability or adjustments needed before your interview.

We are AtkinsRéalis, a global consultancy with over 100 years of expertise. Join us to work on projects with a positive, sustainable impact.

Additional Information:

This role may require security clearance, dependent on UKSV vetting, which may involve proof of residency in the UK for 5 years or more. Do not mention current or previous clearances in your application.

We promote diversity and inclusion, offering policies and networks to support staff from all backgrounds. Applications from all are welcome.