Principal Mechanical EngineerLocation: Gloucestershire Head Office (Office-based)Salary: Competitive + BenefitsJob Type: Full-time, PermanentAre you a visionary Mechanical Engineer ready to lead the next generation of modular data centre design? Our client, a respected SME with a strong industry reputation is seeking a Principal Mechanical Engineer to drive technical excellence across high performance infrastructure projects. This newly created role offers the opportunity to shape design from concept to commissioning, working closely with the corporate team and a grounded, hands-on Technical Director. Location Requirements:Candidates must live within a commutable distance of Junctions 8-20 of the M5 or near Junctions 15/16 of the M4. This is an office-based role with very occasional travel, ideal for engineers seeking stability and meaningful collaboration without constant site work.Why This Role Stands Out:Be a key player in a forward thinking technical team, not just a numberCollaborate directly with senior leadership on live operational environmentsInfluence product innovation and design strategy from day oneEnjoy a grounded, supportive culture with minimal travel and maximum impactWhat You''ll Be Doing:Leading mechanical design for cutting edge modular data centre solutionsCollaborating with internal teams, consultants, and contractors to ensure compliance and qualitySupporting product testing, CFD modelling, and technical documentationDriving concept development and valu