Senior Pipeline Mechanical Engineer

National Gas; Radford Semele; On-site; GBP 50,000 - 70,000; Full time

Job summary

A leading energy provider in the UK seeks a Senior Pipeline Mechanical Engineer to ensure the integrity and safety of gas transmission pipelines while supporting major hydrogen projects. The role demands significant pipeline experience, technical expertise in high-pressure environments, and strong knowledge of relevant regulations. Excellent benefits include an annual bonus and flexible working hours.

Benefits

Annual bonus of 6% based on performance

Company car

26 days' holiday plus statutory holidays

Double-match pension scheme

Flexible benefit scheme

Free gym and exercise classes

Career progression and professional training

Qualifications

• Significant experience in pipeline engineering, ideally in high-pressure gas environments.
• Strong understanding of relevant UK and international codes and standards.
• Familiarity with pigging operations and pipeline inspection.

Responsibilities

• Act as the technical authority for pipeline engineering.
• Review and approve mechanical and pipeline design submissions.
• Evaluate mechanical integrity and conduct route optioneering.

Skills

Pipeline routing

Mechanical design principles

Stress analysis

Material selection

Corrosion protection

Welding

Excellent report writing

Communication skills

Education

Degree in mechanical engineering, pipeline engineering, or a related discipline

Chartered Engineer (IMechE or equivalent)

Tools

Design software/tools for stress analysis

Job description

Overview

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 will 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 will 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.

What you’ll be doing

• 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 optioneering and pipeline alignment studies, 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.

Qualifications (Essential)

• 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.

Desirable Skills

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

Security Clearance

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.

Benefits

• Annual bonus of 6% based on personal and company performance
• Company car
• 26 days' holiday plus statutory holidays – option available to buy extra or sell days
• Overtime at 1.5× normal and then 2× 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 10× 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
• Flexible working hours
• Free gym and exercise classes, subsidised canteen and coffee shop onsite at our Warwick office
• Free parking

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.