Hiring: Staff Mechanical Engineer — Thermals, BESS Company: Enphase Energy Location: Austin, TX Job Posted Time: 2026-09-10 13:58:02 Employment Type: Hybrid Target Skills & Keywords : Airflow, Systems Design About the job Experience: •8+ years of hands-on experience, including experience with utility-scale BESS thermal architectures. Required Skills: •Drive thermal architecture, cooling strategy, and safety design for cabinet-level and containerized BESS platforms, from concept through production and field deployment. •Design Chiller-based, liquid-cooled, air-cooled, and hybrid thermal systems for power electronics — including heat exchangers, chillers, cooling plates, pumps, valves, manifolds, fans, ducting, and venting devices. •Perform system-level and detailed thermal and CFD analysis, and translate results into production-ready, compliant designs. •Lead arcing analysis, containment design with sensors, venting, pressure-relief mechanisms, and propagation-mitigation strategies. •Drive DFMEA, root-cause analysis, and corrective actions based on test data and field feedback. •Support supplier selection and technical design reviews, balancing performance, reliability, manufacturability, and cost (CAPEX/OPEX). •Provide technical guidance and mentor junior engineers. •Strong proficiency in thermal and CFD simulations — system-level and detailed analysis, including airflow and system-flow simulations and transient and steady-state thermal analysis using tools such as Icepak, Fluent, COMSOL, and FLACS. Qualifications: •Support certification efforts and AHJ interactions across global safety and compliance standards. •Bachelor's or Master's in Mechanical or Thermal Engineering with 8+ years of hands-on experience, including experience with utility-scale BESS thermal architectures. Compensation: •$100,000 - $151,000 / year •This position is also eligible for bonus, RSU stocks in equity, premium health insurance and 401k matching benefits Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!