# HVAC Design Engineer (Principal) at Gem Technologies > Onsite · United States · Principal · Software engineering · open. Source: https://alderhq.app/jobs/ashby%3Agem-technologies%3A88c19d97-a136-43a6-bbc4-84a35adc8e60 (read 2026-11-08). ## Facts (observed) - Company: [Gem Technologies](https://alderhq.app/companies/gem-technologies) - Location text: Greenville, SC (SRPPF) - Where it can be done from (inferred): Onsite · United States (evidence: "Location: Greenville, SC (SRPPF)") - Posted: 2026-04-08 (214 days ago) - First seen by alder: 2026-11-04 · last verified: 2026-11-04 - Reposted: 0 times · edited: 0 times - Apply on the employer's site: https://jobs.ashbyhq.com/gem-technologies/88c19d97-a136-43a6-bbc4-84a35adc8e60 ## Pay and sponsorship - Posted pay: not posted - Market band for similar posted roles (United States, n 537): p25 $203k, median $235k, p75 $279k ## Description (the employer's text) ### ABOUT THE ROLE We are seeking a HVAC Design Engineer (Principal) to join our team supporting Fluor on their Savannah River Plutonium Processing Facility (SRPPF) project! This position is full-time and will be based out of Greenville, SC. The purpose of this position is to provide the essential administrative processes, technical knowledge and leadership as described below. This position has oversight of a specific area and acts as a representative of the engineering discipline ensuring technical accuracy in project execution in all phases. This is a lead position on assigned projects performing engineering assignments of advanced complexity. ### Responsibilities Serve as a Supervising Lead providing guidance / supervision to other engineers and designers. Analyze and make independent recommendations regarding technical solutions to problems of advanced complexity in accordance with project requirements. Develop and review specifications and design criteria. Perform and check engineering analyses and calculations; specify materials, equipment, and systems; and solve technical problems of advanced complexity. Coordinate technical issues with other disciplines, project management, vendors, and clients. Execute work in compliance with Project Quality Plan and procedures. Execute work in accordance with the approved project scope, cost, and schedule baselines. Develop and review estimates, schedules and progress reports including effort-hour estimating and staff forecasting. Establish, control, and report on material key quantities; provide analysis and forecasts. Provide technical support to activities associated with equipment and material procurement and subcontracting including scopes of work, technical bid evaluations, and review of vendor submittals. Provide technical support to activities associated with construction administration including response to construction requests-for-information and field changes. ### Requirements Education & Years of Experience – To be considered, you must have a Bachelor’s Degree in Mechanical Engineering and 15+ years of relevant experience. Citizenship – To be considered, you MUST be a United States (U.S.) citizen due to the federal nature of the work. Clearance – To be considered, you must be able to obtain and maintain a government issued clearance, if needed. Working knowledge of applicable federal (including Department of Energy orders), state, and local codes and standards. Ability to communicate effectively with audiences that include but are not limited to project management, coworkers, clients, vendors, and subcontractors. Job related technical knowledge necessary to complete the job. Advanced knowledge of discipline codes and standards. Ability to perform work in compliance with applicable local, state, and federal codes, statutes and guidelines. Ability to attend to detail and work in a time-conscious and time-effective manner. Intermediate computer and software skills to include proficiency in the use of word processing, e-mail, spreadsheet and electronic presentation programs. Significant experience providing Engineering, Procurement, and Construction (EPC) services on large industrial projects. Proficiency executing large EPC projects utilizing engineering analysis, 3D modeling and 2D Computer-Aided Drafting and Design (CADD) automation tools in a multi-discipline environment. Advanced engineering knowledge in the design of heating, ventilation and air-conditioning (HVAC) systems. Development of HVAC load calculations. Development of HVAC air flow diagrams and instrument diagrams. Development of HVAC system sequence of operation narratives. Sizing and specification of air handling units and other equipment. HVAC main duct and distribution duct sizing and routing. Development of black utility (chiller, boiler, custom AHU, air compressor and cooling tower) specifications based upon sizing data provided by Process. Development of HVAC specifications. ### Desired Skills Professional Engineer license, preferred. Experience with design of systems, structures and components for nuclear facilities under the requirements of ASME NQA-1. --- Data: alder (https://alderhq.app). Cite https://alderhq.app/jobs/ashby%3Agem-technologies%3A88c19d97-a136-43a6-bbc4-84a35adc8e60 and the date you read it. Observed facts come from the employer's own listing; location reach, level, family and skills are inferences.