Mechanical Building Services Design Engineer Job Type: Full-time, Permanent Location: Cardiff Area Benefits: Company pension, health insurance, on-site parking About the Role We are seeking a Mechanical Building Services Design Engineer with at least 3 years’ UK experience to join our growing team in the Cardiff area. You’ll be part of a collaborative, friendly practice delivering innovative and sustainable M&E design solutions for projects across the commercial, industrial, government, and healthcare sectors. With a strong reputation for quality and reliability, we work on high-profile projects nationwide alongside leading architects, designers, and contractors, with a focus on low-carbon and sustainable design. Key Responsibilities Develop and deliver mechanical building services design solutions, ensuring compliance with current legislation and engineering standards. Carry out detailed calculations, analysis, and design reviews. Prepare and review mechanical design drawings and related technical documentation. Coordinate with BIM teams to ensure design packages meet required quality and deadlines. Support project managers throughout design, installation, commissioning, and testing stages. Liaise with clients, consultants, and contractors, maintaining strong professional relationships. Ensure adherence to health, safety, environmental, and quality management policies. Work across multiple projects simultaneously, managing priorities and deadlines. About You Qualifications & Experience: Degree in Mechanical/Building Services Engineering (or equivalent relevant experience). Demonstrable experience in detailed building services design. Working towards or already holding a CIBSE-accredited qualification (e.g. BEng/BSc). Experience in both design office and site/construction environments. Proficient in Revit and other industry-standard engineering software. Essential Skills: Ability to create and modify mechanical documentation, drawings, and schematics. Strong organisational and time management skills, with meticulous attention to detail. Effective communicator, both written and verbal, with a collaborative approach. Self-motivated, enthusiastic, and able to take responsibility for project outcomes. Comfortable working under pressure in a fast-paced environment