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Wolviston Recruitment partners

Senior Mechanical Engineer

Wolviston Recruitment partners, Location, West Virginia, United States

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Senior Mechanical Tank Engineer – Darlington, Co Durham Contract Type: Permanent / Full Time

Closing Date: Nov 12th, 2025

Location: Darlington, Co Durham

We are exclusively recruiting for a senior mechanical tank engineer for Whessoe Engineering Ltd, a world-renowned leader in engineering, procurement, and construction (EPC) services, with over 200 years of excellence in the industry, based in Darlington.

As a Senior Mechanical Tank Engineer, you will play a key role in the mechanical design and analysis of tanks, pressure vessels, and heat exchangers for large-scale oil, gas, and LNG projects.

Based in Darlington, with opportunities to travel to UK and international sites, you will lead design activities, supervise engineering teams, and contribute to major infrastructure programmes across the energy sector.

Key responsibilities:

Deliver mechanical design of ambient and cryogenic storage tanks, pressure vessels, and heat exchangers

Conduct engineering calculations, stress assessments, and finite element analysis (ANSYS, STAAD, Caesar II)

Prepare and check technical documents including design reports, specifications, and datasheets

Apply design codes such as API 620/650, ASME VIII, and Eurocodes

Lead and mentor other engineers and interface with design draughting teams

Support tender development, including labour-hour estimation and technical input

Ensure compliance with client requirements, project schedules, and internal quality procedures

What we’re looking for:

Degree-qualified in Mechanical Engineering (BEng or MEng)

Chartered Engineer status (or working towards) is desirable

Strong experience in mechanical design within oil & gas, LNG, or petrochemical projects

Proficient in design and analysis of storage tanks, vessels, and thermal equipment

Working knowledge of FEA and stress analysis tools (ANSYS, STAAD, Caesar II)

Familiar with AutoCAD, and ideally 3D tools such as SmartPlant 3D, PDMS, or Inventor

Experience applying major design codes (API, ASME, Eurocodes)

Benefits:

Flexible working: choose between a 40 or 37‑hour work week, adjusting your hours around core office times (Mon‑Thurs: 10am‑3pm, Fri: 9am‑1pm) to suit your lifestyle

Hybrid working: after a familiarisation period, employees can work 2 days per week from home

Career development: work on complex, multi‑disciplinary projects where you will take the lead on process design, simulation, and safety reviews, gaining invaluable experience in the field

Strong company benefits including 25 days holiday (rising to 28), a holiday purchase scheme, 10% employer pension contributions, free secure parking, life insurance (4x salary), and access to wellbeing initiatives such as regular yoga classes

Want to know more about this role? Say hello to Martin.

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