Location: Remote, U.S. (Dallas-Fort Worth area preferred) Employment Type: Full-Time Travel: Approximately 20% domestic travel required About the Opportunity Join a fast-growing clean-energy technology company developing advanced thermal energy storage solutions for commercial, industrial, and mission-critical facilities. This role will focus on integrating high-impact chilled-water and cooling-plant systems that help improve data center capacity, energy efficiency, resiliency, and grid stability. We are seeking a Senior Mechanical Systems Engineer with strong HVAC, hydronic, and chilled-water expertise to lead mechanical integration projects from design through commissioning across the United States. What You’ll Do • Lead the mechanical design and integration of thermal energy storage and chilled-water systems. • Develop and review P&IDs, hydronic piping layouts, equipment arrangements, valve schedules, and controls integration interfaces. • Perform hydraulic and pipe-stress analyses and support code-compliant engineering documentation. • Integrate systems with chillers, cooling towers, heat exchangers, pumps, and BAS/BMS platforms. • Collaborate with data center operators, MEP firms, contractors, design engineers, controls integrators, and commissioning teams. • Support site surveys, startup, commissioning, and functional testing activities. • Provide technical input for presales efforts, proposals, and RFP responses. • Create or apply automation tools, such as Python or Excel/VBA, to improve engineering analyses and documentation. • Partner with global R&D and product teams to refine system designs and deployment methods. • Mentor junior engineers as the engineering team expands. What We’re Looking For • Bachelor’s degree in Mechanical Engineering; PE license preferred. • 5+ years of experience in HVAC, chilled-water systems, or energy infrastructure. • Strong knowledge of hydronic systems, thermodynamics, cooling plants, and BAS/BMS integration. • Experience coordinating work across mechanical, controls, and electrical disciplines. • Proficiency with AutoCAD, Revit, Plant 3D, or similar design tools. • Familiarity with commissioning, startup, and field-execution processes. • Ability to travel domestically up to 20% of the time. Requirements • Bachelor’s degree in Mechanical Engineering; PE license preferred. • 5+ years of experience in HVAC, chilled-water systems, or energy infrastructure. • Strong knowledge of hydronic systems, thermodynamics, cooling plants, and BAS/BMS integration. • Experience coordinating work across mechanical, controls, and electrical disciplines. • Proficiency with AutoCAD, Revit, Plant 3D, or similar design tools. • Familiarity with commissioning, startup, and field-execution processes. • Ability to travel domestically up to 20% of the time. Preferred Qualifications • Experience in data centers or other mission-critical facilities. • Exposure to thermal energy storage systems. • Familiarity with data-center cooling architectures, including air-side and water-side economization. • Experience with industrial refrigeration or low-temperature glycol systems. • Knowledge of ASHRAE, ASME B31.3, IPC, NEC, and applicable U.S. building codes. • Experience with hydraulic or pipe-stress analysis software, such as Pipe-Flo or AutoPIPE. • Familiarity with energy/load modeling tools, including TRACE or HAP. • Experience using Python, VBA, Dynamo, or AI tools to automate engineering workflows. • Experience preparing technical narratives, proposals, or RFP responses. • Background in retrofit projects, operational facilities, or fast-growth environments. Benefits • Work on advanced clean-energy infrastructure supporting the fast-growing data center market. • Combine hands-on field execution with sophisticated engineering design. • Contribute to high-visibility, mission-critical projects with meaningful environmental impact. • Build a path toward technical leadership within a growing engineering organization. • Receive a competitive compensation package including base salary, bonus potential, benefits, and stock options. • Military veterans are encouraged to apply; leadership and field-operations experience are highly valued.