Staff Hardware Engineer, Thermal Cooling Systems, BESS

Description

Enphase Energy is a global energy technology company and leading provider of solar, battery, and electric vehicle charging products. Founded in 2006, Enphase transformed the solar industry with our revolutionary microinverter technology, which turns sunlight into a safe, reliable, resilient, and scalable source of energy to power our lives. Today, the Enphase Energy System helps people make, use, save, and sell their own power. Enphase is also one of the fastest growing and innovative clean energy companies in the world, with approximately 80 million products installed across more than 160 countries.  
 
We are building teams that are designing, developing, and manufacturing next-generation energy technologies and our work environment is fast-paced, fun and full of exciting new projects.  

Must be available to work on-site at our Bangalore office 5 days per week.

About the role:

As a Staff Hardware Engineer, you will contribute to thermal cooling system development alongside other mechanical and embedded firmware engineers for MW/MWh-scale utility Battery Energy Storage Systems (BESS) serving data centers, spanning outdoor cabinets and containerized platforms.

This role requires deep, hands-on expertise in system design, thermal engineering, power supply, and BESS safety compliance. You will work closely on thermal controls, sensor/safety, and mechanical engineering to ensure the product meets performance, reliability, manufacturability, serviceability, compliance, and cost targets — delivering production-ready designs from concept through deployment while optimizing BOM cost, CAPEX, and long-term OPEX.

• What will you do: 
  
  Develop new products for utility-scale systems using liquid cooling, chillers, and heat exchangers across the full product lifecycle.
• Work in cross-functional teams of system integration, test automation, and inverter hardware engineers.
• Specify, design, verify, and debug complex circuits for various cooling methods (liquid cooling, chillers, and heat exchangers).
• Generate high-value ideas and transform them into platform-level designs.
• Support system architecture, cost-reduction proposals, and failure root-cause analysis.
• Engage with internal technical communities and contribute to cross-team knowledge sharing.
• Mentor and grow junior engineers; provide guidance to PCB layout and compliance engineers.
• Lead efforts to meet thermal safety requirements for BESS applications (UL and IEC) serving data centers.
• Define engineering requirements, develop test plans, and deliver proofs of concept (POCs).
• Champion technical excellence, rigorous documentation, and scientific discipline.
• Serve as a subject matter expert for current and next-generation platforms.

• Who You Are and What You Will Bring:
  
  B.E. with 8+ years of relevant industry experience, or a Master's degree with 6+ years of relevant industry experience.
• Proven track record developing high-density thermal solutions from concept to market launch in commercial/industrial settings.
• Experience developing device models for IGBTs, MOSFETs, and diodes, with accurate loss estimation using simulation tools.
• Proficiency in tolerance analysis, worst-case analysis (WCA), DPPM, DFMEA/AFMEA, and root-cause analysis for field failures.
• Strong knowledge of circuit schematics, multi-layer PCB layout, EMI mitigation, and related simulation tools.
• Demonstrated electronics and electro-mechanical hardware design, troubleshooting, and problem-solving skills.
• Hands-on experience with Python and embedded software for inverter controls development, within a test automation environment.
• Strong system-level understanding of inverter losses, battery rooms, DC- vs. AC-coupled systems, and thermal coordination with BMS, site energy management systems, and PCS derating logic.
• Power supply and thermal solutions.
• End-to-end electronics and electro-mechanical design and development for high-volume manufacturing.
• Field quality improvement and cost reduction through Value Analysis/Value Engineering (VAVE).
• Sensors, safety, and controls.