Senior Process Engineer

Senior Process Engineer

£60,704 to £76,000

Warwick - Hybrid (2/3 days a week)

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

As a Senior Process Engineer, you’ll play a critical role in shaping the technical integrity of some of the UK’s most significant energy transformation programmes. Operating as part of the Design Authority within our Net Zero portfolio, you’ll provide expert process engineering leadership and assurance to ensure our new and repurposed assets are safe, compliant and fit for the future.

You’ll support flagship hydrogen initiatives such as Project Union and East Coast Hydrogen, helping convert existing infrastructure into a low‑carbon energy network that will support the UK’s decarbonisation ambitions for decades to come.

What you'll be doing

• Acting as the process engineering technical authority for assigned projects and assets, ensuring designs meet internal standards, regulatory obligations and industry best practice.
• Reviewing, verifying and approving process engineering deliverables produced by internal teams and external design houses.
• Providing technical assurance across concept, FEED, detailed design, construction and commissioning phases.
• Approving process calculations and documentation, including line sizing, pressure drop, heat and mass balances, relief and blowdown design, valve sizing and process datasheets.
• Leading the development and application of corporate process engineering standards, particularly for hydrogen systems.
• Developing and reviewing key process documents such as PFDs, P&IDs, control and operating philosophies, simulations and basis of design reports.
• Collaborating closely with projects, operations, safety specialists and regulators to deliver robust, fit‑for‑purpose solutions.
• Capturing lessons learned from operational feedback and embedding them into future designs.

About you

You’re a confident, technically credible process engineer who enjoys solving complex problems and influencing decisions in high‑stakes environments. You communicate with clarity, build trust quickly with stakeholders, and take ownership for delivering safe, compliant and high‑quality engineering outcomes.

Key requirements & experience

Essential

• Chartered Engineer status (e.g. IChemE), or actively working towards chartership
• Degree‑qualified in Chemical Engineering or Process Engineering
• Significant experience in process engineering design within gas transmission, oil and gas, utilities or similar process industries
• Proven experience delivering or assuring engineering design packages across the full project lifecycle
• Good working knowledge of UK regulatory and technical frameworks, including GSMR, COMAH, PSSR, COSHH and DSEAR
• Strong analytical and problem‑solving skills, with the confidence to influence engineering decisions
• Experience using process simulation and analysis tools such as Aspen HYSYS

Desirable

• Exposure to large‑scale hydrogen or net zero infrastructure projects

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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