Mechanical Design Engineer

Mechanical Design Engineer

£55,744 to £70,000 + £3k annual Market Supplement

Warwick or Nottingham, Hybrid (3 days office/site, 2 days remote)

About us

National Gas is securing Britain’s energy. We transport gas throughout Great Britain, repair and maintain gas pipelines, and manage the meters that allow millions of homes and businesses to access the energy they need. We are the national gas network, providing secure energy to power Britain, achieve net zero, and maintain our industrial competitiveness.

About the role

We're delivering critical infrastructure projects that keep energy flowing safely and reliably across the country. We're looking for an experienced Mechanical Design Engineer to provide technical leadership, coordinate complex engineering activities, and ensure the successful delivery of major capital projects from concept through to commissioning.

You'll play a pivotal role in the successful delivery of major infrastructure projects. Acting as the mechanical engineering focal point within project teams, you'll provide expert technical guidance, coordinate multidisciplinary design activities, and ensure engineering solutions are safe, compliant, and fit for purpose.

You'll work closely with project managers, operational teams, design consultants, contractors, and supply chain partners to drive projects forward while maintaining the highest standards of safety, quality, and engineering governance.

What you'll be doing

• Acting as the mechanical engineering subject matter expert across major capital projects.
• Coordinating design activities and deliverables to ensure projects remain aligned with schedules, stage gates, and key milestones.
• Managing external design consultants, contractors, and delivery partners to achieve high-quality outcomes.
• Reviewing, challenging, and assuring engineering designs against National Gas standards, specifications, and industry best practice.
• Leading multidisciplinary design reviews, constructability assessments, technical assurance activities, and risk reviews.
• Ensuring compliance with CDM Regulations, process safety requirements, environmental standards, and engineering governance processes.
• Managing engineering change processes, including technical queries, design modifications, concessions, deviations, and change controls.
• Reviewing and approving engineering documentation such as P&IDs, mechanical layouts, drawings, specifications, technical calculations, and reports.
• Supporting procurement activities through the preparation and review of technical scopes, specifications, and tender documentation.
• Providing technical support during construction, commissioning, project handover, and close-out phases.
• Identifying opportunities to improve engineering standards, project delivery processes, and ways of working.

About you

You're a collaborative and influential engineering professional who can build strong relationships across multidisciplinary teams and external partners. Comfortable working in complex project environments, you combine technical expertise with excellent communication skills, sound judgement, and the ability to manage competing priorities while maintaining a strong focus on safety and delivery.

Key requirements & experience

Essential:

• Degree qualified in Mechanical Engineering or a related engineering discipline.
• Significant experience in mechanical engineering design and/or design coordination within gas transmission, utilities, energy, pipeline, petrochemical, or process industries.
• Experience coordinating multidisciplinary design activities and managing external design organisations and contractors.
• Demonstrable experience applying engineering change management processes and design control procedures.
• Knowledge of CDM Regulations, process safety principles, engineering assurance, and risk management practices.
• Ability to review and interpret engineering documentation including P&IDs, general arrangement drawings, mechanical layouts, fabrication drawings, specifications, and technical calculations.
• Strong stakeholder management, communication, and influencing skills.
• Experience supporting projects throughout the full lifecycle, from concept and design through to construction, commissioning, and handover.

Desirable:

• Working knowledge of National Gas engineering standards (G35), specifications, policies, and governance processes.
• Previous experience delivering major infrastructure or capital projects within regulated utility environments.
• Experience working closely with operational, asset management, process safety, and commercial teams

The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role. Many of the positions within our company are subject to national security clearance and Trade Control restrictions. This means that your eligibility for certain roles may be affected by your place of birth, nationality, current or former citizenship, and any residency you hold or have held. Further details are available at United Kingdom Security Vetting: clearance levels - GOV.UK (www.gov.uk).

What we offer

• Annual bonus of 6% based on personal and company performance 
• 26 days’ holiday plus statutory holidays - option available to buy extra or sell days 
• Overtime at x1.5 normal and then x2 on Sunday
• Double-match pension scheme - for every £1 you put in, we'll add £2 (max company contribution 12%) 
• Opt-In flexible benefit scheme, including salary sacrifice private healthcare, dental insurance, technology plans and more 
• Financial protection with 10x salary death in service and financial support if you're unable to work due to long term illness or injury 
• Excellent family friendly provisions - maternity/paternity/adoption/surrogacy/shared parental leave 
• Career progression, professional training and development – including access to LinkedIn Learning 
• Employee assistance programme offering free confidential professional counselling 24/7 
• Financial support to help you cover the cost of professional membership subscriptions 

Inclusive recruitment

At National Gas, we are disability confident and we are signatories of the Armed Forces Covenant, committed to building a workforce that represents the communities we serve. We celebrate the different experiences our colleagues bring to our organisation, and strongly encourage applicants of all backgrounds to apply. Please let us know of any reasonable adjustments you need to perform your best.

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