The opportunity has arisen to join an industry leader in UK’s & Ireland’s Building Services sector. Alternative Heat design, develop and deliver a wide range of offsite-prefabricated, innovative, and sustainable building service solutions throughout the UK & Europe. We specialise in the design, supply, and installation of a wide range of prefabricated energy solutions, typically built in NI and shipped throughout the UK & Europe. We also offer turnkey design, build, and operate solutions for commercial energy centres and large-scale district heating solutions and have experience with successfully procuring and delivering many similar packages to a wide range of public bodies throughout UK & Europe. Are you looking for an opportunity to work with a dynamic, multi-award-winning company at the forefront of the building services industry? Do you want to be part of a progressive team delivering cutting-edge designs for large-scale data centre projects across the UK, Ireland, and Europe? If so, we want to hear from you Alternative Heat is a specialist MEP contractor renowned for its expertise in designing and installing offsite mechanical and electrical prefabricated products. We are expanding our talented team and looking for a Building Services Design Engineer – Data Centres to join us in Banbridge, Belfast, or Dundalk. This role offers an exciting opportunity to work in an innovative and supportive environment where you can grow and thrive in your career. Location: Banbridge, Dundalk or Mallusk Hours: 38 hours per week, Mon-Thurs: 8:00am – 5:00pm, Fri: 8:00am – 3:00pm Salary: Competitive based on experience Reporting to: Building Services Manager Key Responsibilities As a Building Services Design Engineer, you will play a crucial role in delivering high-quality design solutions for modular chilled water pipework systems and turnkey plantroom packages. Your key responsibilities will include: Designing and developing chilled water pipework systems for data centre cooling, incorporating modular skid-based construction for offsite fabrication. Engineering turnkey prefabricated plantroom solutions, including chillers, pumps, heat exchangers, buffer vessels, and MEP infrastructure. Conducting thermal & hydraulic load analysis to ensure optimal system sizing and efficiency. Performing pre-site feasibility assessments and site surveys for seamless integration of modular solutions. Preparing detailed mechanical system designs, including flow, pressure loss, and expansion calculations. Developing mechanical schematics, layout drawings, and fabrication drawings for offsite assembly. Coordinating with electrical and BMS teams for seamless integration of power distribution and automation systems. Ensuring full BIM coordination for clash-free, fully coordinated project execution. Collaborating with structural, architectural, and MEP consultants to optimize space, weight, and access requirements. Selecting high-performance MEP equipment, balancing technical excellence with cost-effectiveness. Preparing technical submittals and liaising with clients, suppliers, and subcontractors for design validation and approval. Overseeing fabrication and commissioning strategies, ensuring compliance with ASHRAE, EN 50600, CIBSE, and Uptime Institute Tier Standards. Staying updated on industry advancements, including modular construction and offsite fabrication techniques. Attending project coordination meetings to provide technical input and design updates. Essential Criteria Degree in Mechanical Engineering or Building Services Engineering (or equivalent). Minimum 3 years of relevant experience in building services design. Strong knowledge of modular construction methodologies and offsite fabrication. Experience in BIM coordination, working with multidisciplinary teams for a clash-free frozen model. Proficiency in mechanical system calculations, including pump sizing, pressure loss analysis, and redundancy planning. Excellent time management and communication skills for collaborating with various stakeholders. Strong working knowledge of Microsoft Office Suite (Outlook, Excel, Word, PowerPoint, Project, Teams). Desirable Criteria Experience with AutoCAD, Navisworks, and Revit for 3D MEP coordination. Familiarity with BIM Level 2 processes and common data environment (CDE) workflows. Knowledge of prefabrication techniques, including modular skids, multi-service racks, and packaged plantroom assembly. Experience using thermal modelling software for data centre cooling assessments. Employee Benefits Full in-house training and career development opportunities. Competitive pension scheme. Life assurance scheme. Health cash plan. Full access to smart wellbeing platform. Annual flu vaccine Free annual health check during working hours. Annual leave increasing in line with length of service. Lavish Long service awards Generously funded social events organised for all employees throughout the year via our Social and Wellbeing committee. Electric vehicle charging ports Full access to car emergency kit. Annual Christmas raffle Yearly allowance for AH Branded clothing merchandise Secure, free onsite parking. Dedicated departmental budget allocated annually for team building events during working hours Free Barista Style Coffee, Hot Chocolate, Tea, and Fruit provided daily. Friendly and supportive working environment in state-of-the-art facilities.