Principal Mechanical Design Engineer

Principal Mechanical Design Engineer Location: Birmingham (Solihull) Salary: Competitive DOE Hours: Mon-Thu 8am-5pm | Fri 8am-3pm Reports to: Head of Design The Company A leading organisation in the commercial decarbonisation sector is seeking a Principal Mechanical Design Engineer. The company specialises in the design, development, and delivery of offsite‑prefabricated energy systems and provides sustainable, low‑carbon solutions across public and commercial sectors. The Role The Principal Mechanical Design Engineer will take ownership of mechanical design delivery from concept through to commissioning. You will work closely with fabrication, project management, BIM, and commissioning teams to ensure accurate, coordinated, and build‑ready solutions. Key Responsibilities Managing the mechanical design delivery for a range of commercial decarbonisation projects Producing mechanical design outputs including: Schematics Engineering calculations Plant selections Bills of materials Project specifications Developing and validating BMS control strategies, from design through to on‑site verification Working with internal teams to ensure seamless integration from planning to construction Supporting and mentoring junior engineers within the design team About You Experience & Skills Required Strong background in mechanical design engineering Experience delivering full mechanical design packages Understanding of commercial mechanical systems and decarbonisation‑focused solutions Ability to manage design delivery across multiple project stages Strong collaboration and communication skills Ability to support and mentor junior team members Why This Role? Senior‑level position within a growing design department Work on a wide range of commercial decarbonisation projects Opportunity to help shape design standards and best practice Competitive salary and early finish on Fridays Apply Now If you're an experienced Mechanical Design Engineer looking to step into a principal‑level role, please apply with your CV today