Staff Mechanical Engineer

Staff Mechanical Engineer | Greenville, SC | On-Site | Full-TimeIf you've owned mechanical design from concept through production on complex power systems and are ready to be the technical authority in the room, this role was built for you.Must-Haves- 10+ years of mechanical design engineering experience- Bachelor's in Mechanical Engineering; M.S. preferred- Working knowledge of pressure systems design, fittings, tubing practices, and material compatibility for gaseous service- Strong fundamentals in structural and thermal analysis including hand calcs and FEA- Proficiency in 3D CAD (SolidWorks, Creo, or NX) and GD&T per ASME Y14.5- Experience with formal engineering change control (ECO/CCB) and configuration management- Experience leading design reviews and mentoring engineers- Strong written and verbal communication with the ability to critically analyze data, processes, and technical documentsNice to Have- Experience with hydrogen systems, fuel cells, or compressed gas- Familiarity with NFPA 2, UL 2267, or IEC 60079- Experience with powered industrial trucks (forklifts) or comparable motive applications- Experience with DFMEA, root cause analysis methods (5 Whys, fishbone, 8D), and reliability engineeringAbout the CompanyThis Greenville, SC-based company is on a mission to lead the next generation of industrial power through hydrogen fuel cell technology. They bring together top engineering talent from high-demand industries and green energy experts to develop best-in-class fuel cell power systems for the world's most demanding applications. Headquarters are located minutes from Greenville Spartanburg International Airport.What You'll Do- Lead mechanical design of fuel cell power systems including structural frames, enclosures, thermal management, and hydrogen storage and delivery hardware- Own mechanical work products through the phase-gate process including design reviews, drawing releases, and engineering change control- Develop and maintain 3D CAD models, 2D drawings with GD&T, BOMs, and engineering documentation to release-quality standards- Perform and review structural (FEA), thermal, vibration/shock, tolerance stack-up, and pressure system analysis- Design hydrogen-wetted components and plumbing in compliance with NFPA 2, UL 2267, IEC 62282, and CGA guidance- Lead root cause analysis and corrective action for mechanical failures in test and field units- Define and support DV test plans; participate in design verification and production readiness reviews- Interface with suppliers to drive design improvements- Mentor and technically guide mechanical engineers and designersWhy This RoleThis is not a support role or a seat on a large team where your work gets lost. You will be the mechanical discipline's technical authority on a growing fuel cell program, with direct influence over design decisions, team standards, and product outcomes. If you want ownership and impact in the clean energy space, this is a rare opportunity to have both.Equal Opportunity Employer.