Principal Mechanical Design Engineer

We’re looking for a Principal Mechanical Engineer to lead the mechanical design of water and wastewater treatment projects, ensuring innovative, cost-effective, and safety-compliant solutions.



You’ll collaborate across disciplines, support project bids, mentor junior staff, and help drive continuous improvement in design practices. This is a great opportunity to make a real impact in a high-performing, forward-thinking environment.



What we’re looking for:



Degree-qualified Mechanical Engineer (Chartered or working toward)



Strong understanding of water/sewage treatment systems



Experience managing design teams



Skilled in layout optimisation and design coordination



Strong communicator and problem solver



Full UK driving license



Only those with proof of right to work in the UK should apply for this role. 



Apply today or get in touch with  for more information