Job Description

Principal Mechanical Engineer - Low Carbon

Location: Remote with occasional visits to the office for project meetings

Team: Energy Transition

Shape the future of low‑carbon energy!

We're looking for a Principal Mechanical Engineer to join our client's growing Energy Transition Team and play a leading role in delivering the next generation of low‑ and zero‑carbon energy projects. If you thrive on solving complex engineering challenges and want to influence the UK's transition to cleaner energy, this is a role where your impact will be felt for decades.

About the Role

As a senior member of a multidisciplinary engineering group, you will lead the development of mechanical designs across a diverse portfolio of energy projects - from early‑stage concept work through to construction, operation and eventual decommissioning.

The work spans:

Conventional power generation

Energy‑from‑waste facilities

Industrial energy systems

Carbon capture, utilisation and storage (CCUS)

Future fuels and first‑of‑a‑kind low‑carbon technologiesYou'll collaborate with private developers, utilities, government bodies, lenders, EPC contractors and OEMs to deliver safe, efficient and innovative engineering solutions.

What You'll Be Doing

Developing cost‑effective, practical mechanical engineering solutions to complex problems

Working across all project stages: Feasibility, Concept, FEED, Value Engineering and Detailed Design

Producing mechanical deliverables including calculations, equipment specifications and datasheets for turbines, compressors, pumps, pressure vessels and heat exchangers

Collaborating with process engineers on PFDs and P&IDs

Supporting plant layout development and 3D model reviews

Working with equipment vendors and evaluating technical proposals

Providing engineering advice on plant integrity issues for operational assets

Contributing to mechanical discipline bids and wider multi‑disciplinary proposals

What We're Looking For

Degree in Mechanical Engineering or a related discipline

Chartered Engineer (or working towards IEng/CEng) with a relevant professional institute

Post‑graduate experience in Power Generation or Oil & Gas

Strong knowledge of industry codes and standards for plant equipment and piping design

Experience in pressure vessel and piping design, including stress analysis

Familiarity with plant 3D modelling, working alongside designers and pipe stress engineers

Proficiency in MS Excel for schedules/datasheets and MathCAD for engineering calculations

Experience with operational thermal plant, troubleshooting and integrity assessments

Knowledge of gas turbine systems; reciprocating engine experience is an advantage

Experience with OEMs, EPC contractors or similar organisations; O&M experience highly desirable

You'll be part of a team at the forefront of the energy transition, working on projects that push the boundaries of engineering innovation. We offer flexible working locations, opportunities for professional growth, and the chance to influence major low‑carbon infrastructure across the UK and beyond