Senior Pipeline Mechanical Engineer

National Gas

£60,704 to £76,000 + Company car

Warwick – Hybrid (2/3 days a week)

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.

Join National Gas as a Senior Pipeline Mechanical Engineer and play a pivotal role in securing Britain’s energy and driving the transition to a cleaner, greener future. You’ll be at the heart of major hydrogen projects like Project Union and East Coast Hydrogen, helping to decarbonise the UK’s energy system and power millions of homes and businesses.

As a Senior Pipeline Mechanical Engineer, you’ll provide technical expertise, assurance, and leadership in the design, modification, and integrity assessment of gas transmission pipelines. Your work will ensure our network remains safe, reliable, and efficient, supporting the UK’s journey to net zero and maintaining our industrial competitiveness.

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• Act as the technical authority for pipeline engineering, ensuring designs meet the highest standards and regulatory requirements.
  
• Review and approve mechanical and pipeline design submissions across all project stages—from concept to commissioning.
  
• Provide expert input for new high‑pressure pipelines and modifications to existing systems, including connections, crossings, and reroutes.
  
• Evaluate mechanical integrity, wall thickness, pressure containment, stress analysis, and material selection.
  
• Conduct and review route option studies and pipeline alignment, considering constructability, land constraints, and operational risks.
  
• Support and review design documentation, including alignment sheets, pipeline calculations, and valve station designs.
  
• Lead or contribute to risk assessments, HAZOPs, constructability reviews, and design assurance workshops.
  
• Ensure integration of pipeline design with related systems (AGIs, pigging facilities, valves, CP systems, geotechnical interfaces).
  
• Collaborate with land, civil, process, and control teams to deliver holistic engineering solutions.
  

You’re a confident communicator and a natural collaborator, able to translate complex engineering concepts into clear language for both technical and non‑specialist stakeholders. Your proactive approach and commitment to continuous improvement will help drive engineering excellence across our pipeline projects.

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• Degree in mechanical engineering, pipeline engineering, or a related discipline.
  
• Chartered Engineer (IMechE or equivalent), or close to submission.
  
• Significant experience in pipeline engineering, ideally in high‑pressure gas environments (utilities, energy, petrochemicals).
  
• Strong understanding of pipeline routing, mechanical design principles, material selection, welding, corrosion protection, and stress analysis.
  
• Working knowledge of relevant UK and international codes and standards (IGEM/TD/1, PD8010, ASME B31.8, API, ISO).
  
• Understanding of UK regulations (Gas Safety, Pipelines Safety, COMAH, CDM).
  
• Experience with design software/tools for stress analysis, alignment sheets, and material specification.
  
• Familiarity with pigging operations, pipeline inspection, and pressure testing.
  
• Excellent report writing and communication skills.
  

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• Experience mentoring or coaching colleagues.
  
• Proven ability to lead technical reviews and assurance workshops.
  

The successful candidate must be able to achieve and maintain Security Check (SC) security clearance for this role.

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• Annual bonus of 6% based on personal and company performance.
  
• Company car.
  
• 26 days’ holiday plus statutory holidays – option to buy extra or sell days.
  
• Overtime paid at 1.5 × normal rate and 2 × on Sunday.
  
• Double‑match pension scheme – employer match up to 12 % of your contribution.
  
• Flex‑benefit scheme, including salary sacrifice private healthcare, dental insurance, technology plans and more.
  
• 10× salary death in service and financial support if you’re unable to work due to long‑term illness or injury.
  
• Family‑friendly provisions: maternity, paternity, adoption, surrogacy and shared parental leave.
  
• Career progression, professional training and development – including LinkedIn Learning.
  
• Employee assistance programme offering free confidential counselling 24/7.
  
• Financial support to cover professional membership subscriptions.
  
• Flexible working hours.
  
• Free gym and exercise classes, subsidised canteen and coffee shop onsite at Warwick office.
  
• Free parking.
  

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

National Gas – Armed Forces Network Co‑Chair – Ex‑Royal Air Force