https://jobs.co.uk/job/senior-or-principal-mechanical-engineer-harper-harrison--dda152e8-b444-4613-a254-c03ebd86e767 RSS feed for Senior or Principal Mechanical Engineer at Harper Harrison. en-gb Thu, 13 Aug 2026 18:10:09 GMT https://jobs.co.uk/job/senior-or-principal-mechanical-engineer-harper-harrison--dda152e8-b444-4613-a254-c03ebd86e767 https://jobs.co.uk/job/senior-or-principal-mechanical-engineer-harper-harrison--dda152e8-b444-4613-a254-c03ebd86e767 Wed, 12 Aug 2026 23:00:00 GMT Location: London | Salary: £50000 - £80000/annum | Type: Permanent | Data centres are one of the fastest moving spaces in engineering right now, and this is a genuine chance to be part of a consultancy that''s thriving in it. Our client is a multi disciplinary building services consultancy with a growing, highly regarded Mission Critical team, delivering complex, high profile data centre projects for major international clients. They''re expanding fast and looking for a Senior or Principal Mechanical Design Engineer to join a talented, close knit MEP team. You''ll get real ownership of design work, exposure to some of the most technically demanding cooling and HVAC challenges in the sector, and a clear path toward Principal and Associate Director level. What you''ll be doing Producing conceptual and detailed mechanical design solutions in line with client briefs Carrying out mechanical services design calculations using Hevacomp and IES software Supporting CFD briefing and reviews with the supply chain Working across heating, ventilation, air conditioning, cooling and domestic hot and cold water services for mission critical facilities Getting involved in large scale liquid cooling scheme design Working with HVAC systems including Fan Wal... Permanent