Mechanical Engineer

United Infrastructure Ltd; Warrington; On-site; GBP 70,000 - 110,000; Full time

Job summary

United Infrastructure Ltd in Warrington is seeking a Senior Mechanical Engineer to lead the design, procurement, construction and commissioning of a Design & Build Natural Gas Compressor Station project. You will coordinate mechanical engineering across lifecycle, ensuring safety, compliance, and on-time delivery.

The role requires a Bachelor’s in mechanical engineering with Chartered status preferred and at least 10 years of experience in mechanical engineering for gas infrastructure, with

Qualifications

• Bachelor’s degree in mechanical engineering or equivalent.
• Chartered Engineer status (or working towards chartership) preferred.
• Minimum 10 years' experience in mechanical engineering within design and project management.
• Experience with natural gas infrastructure and compressor stations is desirable.

Responsibilities

• Lead and coordinate mechanical engineering activities through all project phases.
• Review and approve mechanical design deliverables (compressor packages, gas process, piping, etc.).
• Coordinate interfaces between mechanical and other disciplines (civil, electrical, process).
• Manage project deliverables against schedule and budget; provide technical leadership in procurement, fabrication, construction and commissioning.
• Coordinate FATs and vendor inspections; support site construction teams; respond to technical queries and changes.
• Assist in commissioning, handover and preparation of as-built documentation.
• Promote safety and ensure compliance with HSE requirements and permit-to-work systems.

Skills

Mechanical design

Project engineering

Compressor package knowledge

Piping & pressure systems

Contractor/vendor management

Cost/schedule/risk management

Stakeholder management

Problem solving

Multidisciplinary teamwork

Education

Bachelor’s degree in mechanical engineering

Chartered Engineer status (or working towards)

Job description

Purpose of the Role

To support the successful delivery of a Design & Build Natural Gas Compressor Station Project. The role will be responsible for managing and coordinating the mechanical engineering aspects of the project throughout the full lifecycle, from concept and detailed design through procurement, construction, commissioning, and handover.

The successful candidate will ensure that all mechanical systems are designed, installed, tested, and commissioned safely, in accordance with applicable standards, specifications, project requirements, and regulatory obligations.

Key Responsibilities

Engineering & Design

• Lead and coordinate mechanical engineering activities during all project phases.
• Review and approve mechanical design deliverables including:
• Compressor packages
• Gas process systems
• Pressure vessels
• Piping systems
• Fuel gas systems
• Cooling systems
• Vent and blowdown systems
• Fire protection systems
• Review PFDs, P&IDs, mechanical layouts, GA drawings, equipment specifications, and datasheets.
• Ensure compliance with relevant industry standards and codes including:
• ASME
• API
• PD5500
• EN Standards
• IGEM Standards
• Pressure Equipment Regulations
• ATEX requirements
• Coordinate design interfaces between mechanical, civil, structural, electrical, control, and process engineering disciplines.
• Participate in HAZID, HAZOP, Design Reviews, Constructability Reviews, and Value Engineering workshops.

Project Delivery

• Manage mechanical engineering deliverables against project schedule and budget.
• Provide technical leadership during procurement, fabrication, construction, and commissioning activities.
• Monitor design progress and identify technical risks and mitigation measures.
• Support contractor and vendor management throughout project execution.
• Review vendor documentation and ensure compliance with project specifications.
• Coordinate Factory Acceptance Tests (FATs) and vendor inspections.

Construction Support

• Provide technical support to site construction teams.
• Review installation methodologies and construction work packs.
• Respond to site technical queries and engineering change requests.
• Ensure mechanical installations meet design intent and quality requirements.
• Conduct site inspections and witness testing activities.

Commissioning & Handover

• Support pre-commissioning, commissioning, and performance testing activities.
• Develop and review commissioning procedures and mechanical completion documentation.
• Participate in system walkdowns and punch-list management.
• Ensure all commissioning records and as-built documentation are completed and submitted.
• Assist in final project handover to the client and operations teams.

Health, Safety, Environment & Quality

• Promote a strong safety culture throughout the project lifecycle.
• Ensure compliance with project HSE requirements and permit-to-work systems.
• Participate in risk assessments and incident investigations when required.
• Support Quality Assurance and Quality Control processes.
• Ensure designs and installations achieve the highest standards of safety, reliability, and operational performance.

Required Qualifications

• Bachelor’s degree in mechanical engineering or equivalent.
• Chartered Engineer status (or working towards chartership) preferred.
• Minimum 10 years' experience in mechanical engineering within design and project management
• Natural Gas Infrastructure
• Compressor Stations (desirable)
• Gas Transmission Networks
• Energy Infrastructure
• Oil & Gas Facilities
• Experience delivering EPC or Design & Build projects.
• Strong understanding of rotating equipment and compressor systems.
• Knowledge of pressure systems and gas process facilities.
• Familiarity with relevant UK and international engineering standards.

Essential Skills

• Mechanical design and project engineering expertise.
• Compressor package knowledge.
• Piping and pressure systems engineering.
• Technical specification development and review.
• Contractor and vendor management.
• Cost, risk, and schedule management.
• Strong communication and stakeholder management skills.
• Problem solving and analytical skills.
• Ability to work effectively within multidisciplinary project teams.

Desirable Experience

• Gas transmission or gas distribution infrastructure projects.
• High-pressure natural gas facilities.
• Compressor station upgrades or greenfield developments.
• Knowledge of IGEM standards and UK gas industry practices.
• Experience with gas engine-driven or electric motor-driven compressor systems.
• Familiarity with hazardous area classification and ATEX compliance.
• Knowledge of pressure equipment design and hazardous area classification.

Join us at United Infrastructure and be part of our mission to deliver innovative and sustainable solutions to the complex infrastructure needs of the UK.