MEP Design Engineer

About the role We are hiring a MEP Design Engineer for our client — a company building a large-scale AI data center (with a planned capacity of 300 MW) in Poland, on a site currently undergoing active reconstruction into modern technological infrastructure. The first phase, with a capacity of 50 MW, is planned to go live this year. Role description The MEP Design Engineer is responsible for the design and technical development of mechanical, electrical, and plumbing systems for the company's data centers. The engineer ensures design solutions meet reliability requirements, target energy efficiency metrics, and applicable regulatory requirements. Responsibilities - Develop and review electrical distribution design (MV/LV distribution, UPS, diesel generators, BESS) - Design cooling systems, including high-density/DLC (direct liquid cooling) architecture, dry coolers, chillers, water towers, CDUs - Coordinate modular architecture and its integration with MEP infrastructure - Develop gas fire suppression, ventilation, and OT-IT integration (BMS/DCIM) systems - Review design documentation from suppliers and partners, flag risks and discrepancies - Ensure design compliance with regulatory requirements - Prepare and maintain the Basis of Design document and technical specifications - Participate in tender processes and vendor proposal evaluation (generators, UPS, chillers, switchgear) - Coordinate with the IT Infrastructure team to align cooling and power requirements Required experience - 5+ years of MEP design experience specifically for data centers - Hands-on experience with Tier III/IV systems - Experience with power architecture design (MV/LV distribution, UPS, backup power) - Experience designing high-density liquid-cooled (DLC) systems or clusters - Proficiency with AutoCAD/Revit and engineering calculation software - English proficiency sufficient for international project documentation Nice to Have - Experience with NVIDIA GB200-GB300 infrastructure - Knowledge of EU/Polish electrical and fire safety codes - Polish language skills - Experience on greenfield/brownfield construction-phase projects