Senior Mechanical Systems Engineer

Nostromo develops and deploys the most advanced Thermal Energy Storage (TES) system on the market for commercial and industrial facilities. Our patented IceBrick® technology integrates with chilled water HVAC infrastructure to shift cooling demand from peak to off-peak hours increasing and accelerating data center IT capacity, reducing energy costs, improving resiliency, and supporting grid stability. We are a fast-growing technology company with large-scale deployments and demand across data centers, commercial real estate, and mission-critical facilities. THE ROLE We are looking for a Senior Mechanical Engineer based in the Dallas-Fort Worth area with deep HVAC and chilled-water expertise and hands-on experience in data center environments. The selected candidate will lead the mechanical integration of TES systems into existing and new cooling plants — from design through commissioning across the U.S. Highlights Title: Senior Mechanical Systems Engineer Reporting to: Senior VP Engineering & Operations Location: Home-based Travel: Domestic, 20% of time Compensation: Base, benefit, stock options KEY RESPONSIBILITIES Lead mechanical design and integration for TES and chilled water systems Develop and review P&IDs, hydronic piping layouts, equipment arrangements, valve schedules, and control integration interfaces Integration with chillers, cooling towers, heat exchangers, pumps, and BAS/BMS systems Interface with data center operators, MEP firms, mechanical contractors and design engineers, controls integrators, and commissioning teams Support field activities: site surveys, startup, commissioning, functional testing Provide technical input during presales and proposal activities Collaborate with global R&D and product teams to refine system design and deployment methods Mentor junior engineers as the team grows REQUIRED QUALIFICATIONS B.Sc. in Mechanical Engineering; PE license preferred 8+ years of experience in HVAC, chilled water systems, or energy infrastructure Prior experience in data centers or mission-critical facilities - Advantage Strong working knowledge of hydronic systems, thermodynamics, cooling plants, and BAS/BMS integration Experience coordinating across mechanical, controls, and electrical disciplinesץ Proficiency with AutoCAD, Plant 3D, and Revit Familiarity with commissioning and field execution processes PREFERRED QUALIFICATIONS Experience with Thermal Energy Storage systems Familiarity with data center cooling architectures (air-side, water-side economization, etc.) Experience with industrial refrigeration or low-temperature glycol systems Knowledge of ASHRAE, ASME, IPC, NEC, and U.S. building codes Experience in retrofit or operational facility environments Startup or fast-growth company experience is a plus WHY JOIN US Be part of deploying high-profile, ground-breaking technology, working with industry leaders and top-brand names Engage in the fast growing data center market Work on high-impact clean energy infrastructure at hyperscale and mission-critical facilities Combine hands-on field execution with advanced engineering design High-visibility role with a clear path to technical leadership Competitive salary, bonus potential, and full benefits package #J-18808-Ljbffr