Mechanical Engineer

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

Job summary

United Infrastructure Energy Limited is seeking an experienced Mechanical Project Engineer to lead mechanical design and coordination across the full project lifecycle. You will oversee compressor packages, gas process systems, piping, and associated equipment, ensuring safe, compliant, and on-schedule delivery.

The role requires a minimum of 10 years in mechanical engineering within design and project management, with Natural Gas Infrastructure experience and familiarity with UK and

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 experience.
• 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.

Responsibilities

• Lead and coordinate mechanical engineering activities during all project phases.
• Review and approve mechanical design deliverables including compressor packages and gas process systems.
• Coordinate design interfaces between mechanical, civil, structural, electrical, control, and process engineering disciplines.
• Review PFDs, P&IDs, mechanical layouts, GA drawings, equipment specifications, and datasheets.
• Manage mechanical deliverables against project schedule and budget.
• Provide technical leadership during procurement, fabrication, construction, and commissioning activities.
• Coordinate Factory Acceptance Tests (FATs) and vendor inspections.
• Support contractor and vendor management throughout project execution.
• Review vendor documentation and ensure compliance with project specifications.
• Coordinate design reviews and risk mitigation throughout the lifecycle.

Skills

Mechanical design

Piping systems

Contractor management

Vendor management

Rotating equipment

Project engineering

Communication

Education

Bachelor’s degree in mechanical engineering

Chartered Engineer status

Job description

Purpose of the Role

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

• 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.

Company Culture

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. Here at United Infrastructure, we invest in our people and firmly believe that our workforce is our most valuable asset. A driving force for success and the core to achieving our vision of creating a connected and sustainable future, our team is the heart of our organisation. Are you looking to be part of an exciting journey within an evolving business? Want to learn something new, every single day? Then you’ve come to the right place. A fast-paced, diverse, and hugely ambitious business, we welcome challengers, innovators and people who embrace change. Establish yourself in a creative environment that champions freedom of expression, and supports you in your personal and professional development – because together, we achieve more.