Senior Mechanical Engineer (Mission-Critical - Data Centers)

Submer • Village of Highland Falls, NY

1d • Hybrid

About The Position

We are seeking a Senior Mechanical Engineer to lead the design and delivery of critical mechanical systems for high-density data centers, including both conventional air-cooled facilities and direct liquid cooling (DLC) environments. This role ensures the safe, efficient, and resilient operation of cooling and mechanical infrastructure; from chillers to fan wall, CRAC/CRAH units, CDU loops and rack-level liquid cooling; enabling next-generation compute platforms and mission-critical operations. The ideal candidate brings a proven track record in mechanical design for data centers and thrives in collaborative, fast-paced, multidisciplinary projects.
This role offers you a great opportunity to:
Lead a landmark AI data center project: Phase 1 of a 100 MW “AI factory” in Georgia, fast-track, hyperscale, high-density - not a traditional colocation or enterprise facility.
Work at the forefront of AI infrastructure: Gain unique, marketable experience designing state-of-the-art power, cooling, and compute systems.
Work in a fast-paced, high-impact environment: Contribute to a project that pushes the boundaries of scale, density, and next-generation data center design.

Requirements

• Bachelor’s or Master’s degree in Mechanical Engineering (or related field).
• Minimum of 8 years of proven experience in mission-critical electrical design with a strong exposure to (at least 6 years) in large‑scale, high‑density, fast‑track data center project delivery.
• Strong knowledge of HVAC, chilled water, and liquid cooling systems (DLC, CDU, RDHx, etc.).
• Proficiency in mechanical design and analysis tools (e.g., Revit, AutoCAD MEP, HAP, Pipe-Flo, CFD).
• Familiarity with Tier certification requirements, ASHRAE guidelines, and international standards.
• Proven analytical, problem-solving, and troubleshooting skills.
• Strong communication and collaboration skills in cross-disciplinary teams.
• Ability to manage complex projects under tight deadlines in client-facing environments.

Nice To Haves

• AI infrastructure experience is a plus.

Responsibilities

• Develop detailed designs for mechanical and cooling systems (chillers, cooling towers, CRAC/CRAH units, pumps, piping, valves, CDUs, FW, RDHx, and DLC loops).
• Define control strategies for primary and secondary cooling loops, supporting both air and DLC environments.
• Produce design documentation including schematics, layouts, hydraulic diagrams, specifications, and equipment schedules.
• Evaluate and select equipment suppliers, ensuring compliance with project performance requirements and client standards.
• Perform load calculations, hydraulic modeling, and energy efficiency analysis.
• Optimize chilled water, glycol, and DLC systems to meet PUE and WUE targets.
• Assess redundancy schemes (N, N+1, 2N) and their impact on system performance and resilience.
• Integrate mechanical design with electrical and IT infrastructure, ensuring alignment across disciplines.
• Support procurement processes, technical reviews, and submittal evaluations.
• Oversee factory acceptance tests (FATs), site acceptance tests (SATs), commissioning, and system validation.
• Lead troubleshooting and root cause analysis for thermal or mechanical issues, implementing corrective actions.
• Ensure designs comply with international standards, local building codes, ASHRAE, and Uptime Institute best practices.
• Develop and maintain documentation including test protocols, O&M manuals, and method statements.
• Contribute to risk assessments and ensure safety compliance for fluid handling systems.
• Partner with clients, architects, electrical engineers, and IT teams to deliver integrated solutions.
• Provide subject matter expertise on high-density and DLC cooling strategies.
• Mentor junior engineers and contribute to knowledge sharing within the organization.

Benefits

• Attractive compensation package reflecting your expertise and experience.
• Medical Insurance Plan.
• 401k Employee volunteer contribution 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.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior