About Horizontal: Established since 2003 in the US, Horizontal solves complex challenges across two distinct businesses: Horizontal Digital and Horizontal Talent. We are consistently recognized for being a top workplace and one of the fastest growing private companies. Horizontal Talent specializes in staffing for IT, Digital & Creative and Business & Strategy markets. We have global offices in US, UAE, India, Malaysia and Australia. Job Summary Oversees and leads the mechanical engineering design for large-scale data centre projects, ensuring high-performance, reliable, and energy-efficient mechanical systems. This role manages the design of critical cooling infrastructure-including chilled water, DX systems, CRAC/CRAH, ventilation, heat rejection, and mechanical plant rooms-while coordinating with architects, electrical teams, civil/structural engineers, and hyperscaler/client requirements. Ensures all mechanical designs meet Tier III/IV standards, Uptime Institute guidelines, and the fast-track delivery demands typical of mission-critical data centre construction. Key Responsibilities Lead and manage the full mechanical design process for data centres from concept to detailed design. Develop mechanical design strategies based on cooling load, redundancy (N+1, N+2), energy efficiency, and client specifications. Ensure systems comply with relevant standards (ASHRAE, Uptime Institute, local codes). Oversee design of chilled water systems, direct expansion systems, CRAH/CRAC units, adiabatic/evaporative cooling, and heat rejection systems. Perform load calculation, equipment sizing, and system optimization for mission-critical cooling. Coordinate closely with electrical, architectural, C&S, fire protection, and ICT teams for seamless MEP integration. Work with BIM teams to validate mechanical design accuracy in federated models. Align design deliverables across consultants, contractors, and vendors. Review design drawings, equipment selections, specifications, and technical submissions. Conduct value engineering to optimize performance and cost efficiency. Ensure mechanical systems provide required maintainability, accessibility, and reliability. Evaluate and approve mechanical equipment from OEMs (chillers, cooling towers, pumps, CRAH/CRAC, AHUs, etc.). Ensure vendor designs integrate properly into the overall project. Provide technical support during installation, testing, and commissioning phases. Respond to RFIs, coordinate design clarifications, and resolve site issues. Ensure installation follows mechanical design intent and meets commissioning requirements. Prepare and manage mechanical design reports, basis of design (BoD), and technical documentation. Ensure all design documentation aligns with client/hyperscaler standards and project BEP. Support final handover, as-built documentation, and operational readiness.