Sr. MEP Design Engineer

Location: Houston, TX [Hybrid] OR Bay area, California About Submer: Submer designs and delivers end-to-end AI datacenter infrastructure built around industry-leading liquid cooling. We help organizations scale AI beyond the limits of traditional datacenters by enabling higher density, greater efficiency and lower environmental impact – accelerating time-to-AI from first deployment to full production. What impact you’ll have: We are seeking a specialized MSenior MEP Design Engineer to lead the research, prototyping, and execution of modular, hyperscale data center units. You will translate client and IT capacity requirements into efficient, scalable, and code-compliant modular packages. Your focus will be optimizing equipment layout in a modular data center (MDC container to survive physical transport, rigging, and rapid on-site deployment while reducing deployment timelines and cost. What you’ll do: Modular Integration: Engineer and optimize physical layouts for server racks, cable routing, and containment while eliminating spatial conflicts using BIM. Ensure structural enclosures maintain integrity during transport, lifting, and field installation. Direct Liquid Cooling Architecture: Design secondary fluid networks inside the container, including Cooling Distribution Units (CDUs), manifolds, and dripless quick-disconnect lines. Electrical System Design: Architect electrical paths capable of delivering 100 KW + per rack, detailing high-capacity busways, intelligent PDUs, and localized power protection. Create and audit single-line diagrams, schematic wiring, and cable schedules. Thermal Management: Design precise HVAC and cooling systems (e.g., in-row cooling, hot/cold aisle containment, liquid cooling). Use Computational Fluid Dynamics (CFD) to validate cooling performance under maximum thermal loads. Controls & Telemetry: Architect monitoring and telemetry systems, including DCIM (Data Center Infrastructure Management) networks and BMS (Building Management Systems). Manufacturing & Testing: Drive prototype development, create standard fabrication instructions, and conduct Factory Witness Testing (FWT) to ensure manufacturability. Compliance & Standards: Ensure designs comply with mission-critical industry and regulatory standards (e.g., NFPA 70, UL, ASHRAE guidelines). What you’ll need: BS or MS in Mechanical Engineering, Electrical Engineering, or a highly technical equivalent discipline. Experience: 8+ years in mission-critical data center design, with a strict emphasis on liquid cooling (Direct-to-Chip or Immersion) and hyperscale facilities. Fluid Dynamics Mastery: Deep knowledge of closed-loop fluid dynamics, structural piping design, materials compatibility, and anti-corrosion/filtration chemical treatments. Software Toolset: Mastery of Autodesk Revit, CREO or SolidWorks, and specialized structural or piping software. Proficiency in thermal-fluid systems design, mechanical packaging, and system-level integration. Excellent communication and project leadership skills across cross-functional engineering disciplines. Preferred Qualifications Licensure: Active Professional Engineer (PE) status or Chartered Engineer (CEng) equivalent. Hyperscale Credentials: Certified Mission Critical Professional (CMCP) or UptimeInstitute Accredited Tier Designer (ATD). OEM Experience: Direct history integrating server architectures from Tier 1 AI hardware providers (e.g., NVIDIA DGX, AMD Instinct, or Intel Gaudi systems). Fluid loop expertise: Deep knowledge of ASHRAE Liquid Cooling Guidelines (W1 to W5 water temperature classifications). Manufacturing Knowledge: Experience working inside a prefabricated modular assembly factory or automotive/aerospace packaging plant. What we offer Attractive compensation package reflecting your expertise and experience. Medical Insurance Plan. A great work environment characterized by friendliness, international diversity, flexibility, and a hybrid-friendly approach. You'll be part of a fast-growing scale-up with a mission to make a positive impact, offering an exciting career evolution. Our job titles may span more than one job level. The actual base pay is dependent on a number of factors, such as transferable skills, work experience, business needs and market demands. Our inclusive responsibility Submer is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected category under applicable law. #J-18808-Ljbffr Submer