Senior Mechanical Engineer - Testing

About Mojave Energy Systems, Inc. Mojave is changing the nature of air conditioning. Air conditioning consumes ~9% of total global electricity production and results in the emissions of 1 billion tons of carbon dioxide annually. It is time for a change, and Mojave’s liquid desiccant air conditioning systems are doing just that. If you want to change the world, starting with the world of air conditioning, then you may belong at Mojave. We are looking for purpose-driven team members who enjoy problem solving, teamwork, and personal growth in a high-performance, driven culture to join our venture-backed company. We are seeking an innovative Senior Mechanical Engineer - Testing to join our Engineering team, reporting to the VP of Engineering. This on-site role will work closely with engineering, design, and manufacturing teams to design, develop, test, and commercialize our third-generation liquid desiccant HVAC systems and subsystems. The successful candidate will have experience designing and testing vapor compression systems for building applications or related fields, including refrigerant-to-air coil selection, system design and modeling, and deep expertise in psychometrics, thermodynamics, testing, and Python-based modeling. This individual will play a key role in developing industry-changing commercial HVAC products, taking ownership of projects from concept through validation, designing and executing robust test plans, collaborating across local and remote teams, and engaging hands-on in laboratory testing under demanding timelines. This is a unique opportunity to join a newly launched and funded company at the ground floor, helping bring cutting-edge climate technologies to market. We offer a competitive salary and benefits package, along with a meaningful equity opportunity. This job is an on-site position in the Anderson/Greenville, SC area. RESPONSIBILITIES: • Design and oversee construction of a psychrometric chamber; Manage the commissioned psychrometric chamber, owning test scheduling, operation, calibration, and maintenance • Develop test plans and execute them on end-of-line and prototype units or subsystems utilizing psychrometric chamber for performance validation and quantification • Develop test plans and execute them on end-of-line and prototype units or subsystem utilizing psychrometric chamber for performance validation and quantification, analyzing results against model predictions to support manufacturing and engineering" • Manage a project across multiple stakeholders to meet required deadlines • Contribute to design reviews internally and externally with suppliers • Provide performance input and design experiments to support product development QUALIFICATIONS: • BS in Mechanical Engineering or directly adjacent field of study • >5 years' experience in mechanical engineering or equivalent academic work post-BS. • Experience testing hardware and validating/developing models with test data • Experience with unit-level performance testing of HVAC or similar thermal equipment, including test planning, instrumentation, and data analysis • Strong analytic and programming (python) skills • Strong critical thinking skills: ability to deep dive into cause-effect and complex diagnostics • Demonstrated history of working independently, demonstrating ownership of projects, and attention to detail/ checking/ controlling quality and accuracy of their work • Strong understanding of thermodynamics and heat transfer Preferred Qualifications: • Masters degree, preferably with focus on heat transfer and thermodynamics • Experience managing or operating a psychrometric chamber or similar environmental test facility, including calibration and upkeep • Strong understanding of heating and air conditioning including psychometric calculations • Strong understanding of refrigeration systems and their components • Experience with liquid desiccant or solid desiccant air conditioning systems • Experience selecting components common to HVAC including fans, pumps, heat exchangers, and refrigeration components • Ability to travel to R&D location in California up to four weeks per year Mojave is a mission-driven company focused on advancing air conditioning technology. We manufacture our products in the United States at our Anderson, South Carolina facility and our engineering lab is based in Sunnyvale, California. We are committed to a workplace grounded in integrity, excellence, collaboration, and meaningful work. The anticipated compensation range for this position is $105,000 - $135,000 with an equity award (4-year vest) on hire. Final compensation will be determined based on relevant experience, qualifications, skills, and work location, consistent with applicable law. We offer a benefits package that may include annual bonus eligibility (equity award) health and welfare benefits, paid time off, company holidays, short/long-term disability and life insurance (subject to plan terms, eligibility requirements and applicable law). Equal Opportunity Employer This employer is required to notify all applicants of their rights pursuant to federal employment laws. For further information, please review the Know Your Rights notice from the Department of Labor. Working Conditions • Ability to work in an independent environment with moderate supervision • Ability to work under a moderate noise level (i.e. working on an open floor office with printers, telephones, computers, etc.) • Ability to be flexible and successfully respond to multiple work pressures • Sitting or standing for extended periods of time • Dexterity of hands and fingers to operate computer keyboard, mouse and other computer components