Job Title: Subject Matter Expert (SME) – HVAC & Liquid Cooling (AI Data Centers)

Location: Mumbai

Department: AI Datacenter Design Engineering & Technical Architecture Team

Reports To: Head of Design

Position Overview
We are seeking a top-tier Subject Matter Expert (SME) – HVAC & Liquid Cooling to serve as the ultimate technical authority on thermal engineering, liquid cooling innovation, and HVAC architecture for our next-generation AI data centers.
You will lead the design standards, fluid dynamics modeling, vendor benchmarking, and technical validation for high-density cooling infrastructure. This role is responsible for ensuring our facilities reliably support 100 kW to 150 kW+ per rack GPU deployments using direct-to-chip, immersion, and advanced hydronic cooling loops.

Key Responsibilities
1. Advanced Liquid Cooling Architecture & Innovation
Direct-to-Chip & Immersion Topology: Define the global technical standards for direct-to-liquid cold plate loops, single/two-phase immersion cooling, Coolant Distribution Units (CDUs), and Rear Door Heat Exchangers (RDHx).




Fluid Dynamics & Thermal Modeling: Lead Computational Fluid Dynamics (CFD) modeling, hydronic network calculations, pressure drop analysis, and thermal capacity planning for high-density GPU clusters (e.g., NVIDIA H100/B200/GB200).
Coolant Chemistry & Fluid Management: Establish strict fluid quality guidelines, dielectric/glycol chemical specs, water treatment protocols, filtration standards, and corrosion prevention controls.
2. HVAC & Central Plant Optimization
Primary Heat Rejection Systems: Architect low-PUE primary cooling systems, including magnetic-bearing chillers, adiabatic dry coolers, free-cooling economizers, and cooling towers.
Hybrid Air & Liquid Systems: Design balanced thermal environments where liquid cooling handles 80–90%+ of rack heat load while supplementary CRAH/CRAC units maintain ambient data hall humidity and air distribution.
Energy & Sustainability Optimization: Drive indu

📌 HVAC & Liquid Cooling (AI Data Centers) - SME (Mumbai)
🏢 HCLTech
📍 Mumbai