{"id":773607,"url":"https://alion.io/job/hgen-senior-commissioning-field-engineer","title":"Senior Commissioning & Field Engineer","company":{"id":679575,"name":"Hgen","domain":"hgen.com","url":"https://alion.io/company/hgen","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Lever","truth_index":{"grade":"B","score":75,"open_postings":6,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-11-09T06:03:00Z"}},"role":"Field & Service","role_family":"Field & Service","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Los Angeles, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":60000,"max_usd":116000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":3574},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-08-04T20:29:00Z","employer_posted_date":"2026-08-04","last_verified_at":"2026-11-09T16:21:24Z","board_verified":true,"closed_at":null,"days_open":96,"trust":{"level":"stale","repost_count":0,"flags":["stale"],"days_open":96},"description":"Hgen's mission is to achieve a clean and renewable energy future through providing foundational molecules for critical industries. By enabling cheap and abundant clean hydrogen, Hgen aims to help decarbonize the more than 10% of global emissions that are best addressed with hydrogen. Learn more about why clean hydrogen is critical for achieving zero-emissions.\nDescription\nAs a Senior Commissioning & Field Engineer, you will lead the commissioning and deployment of the electrolyzer modules in our factory and at the customer sites around the country. Your testing will ensure that our systems are ready for delivery and that we have a clear plan for how to deliver and integrate the electrolyzer modules at our customers' facilities. This role offers the opportunity to work in a fast-paced, collaborative startup environment, where your contributions will have a direct impact on the future of decarbonization.\nResponsibilities\nDevise, author, review, and execute test plans for factory acceptance testing, certification, and checkouts at customer sites\n\nDevelop clear plans for transit, including preparation and lifting operations\n\nResolve technical issues with innovative and resourceful solutions\n\nCoordinate mechanical, fluid, and electrical work at customer sites in advance of and during deployment, including sourcing and managing remote vendors and contractors\n\nDevelop and execute maintenance procedures and schedules at customer sites\n\nCreate and maintain piping and instrumentation diagrams (P&IDs) and the component and instrumentation lists for deployments and key test configurations\n\nTrack, organize, and manage spare parts inventory for maintenance\n\nSupport development testing and test stand upgrades as needed\n\nOther duties as assigned\n\nBasic Qualifications\nBachelor's degree in a relevant engineering discipline (mechanical, aerospace, electrical, etc.)\n\n5+ years of experience developing and commissioning control systems in hydrogen production, fuel cells, oil and gas, chemical plants, energy infrastructure or other relevant industries\n\nStrong understanding of fundamental principles in mechanical, fluid, power, and control systems\n\nAbility to lift up to 50 lbs unassisted\n\nAble to work on-site in Hawthorne, CA\n\nAbility to travel to sites around the US (approx 20% time), including extended travel (about 1 month) for deployments\n\nPreferred Skills & Experience\nProven ability to interface with multidisciplinary functions of mechanical, electrical, and fluid systems\n\nExperience and demonstrated proficiency in developing and implementing comprehensive work instructions and test procedures\n\nA history of working directly with hardware and subsystems including, instrumentation, power systems, hazardous fluids, and structures in a controlled environment\n\nFamiliarity with industrial controls & data acquisition systems including Beckhoff TwinCAT and Ignition HMI platforms\n\nExperience with Class I Div 2 hazardous environments, high and low voltage AC and DC systems\n\nKnowledge of fluid components and instruments (pumps and motors, valves, regulators, heat exchangers, flow meters) and high power electrical systems (switchgear, transformers, rectifiers, VFDs)\n\nProfessional Qualities\nWhen given a set of guiding objectives and principles, you can identify, prioritize, and execute on tasks with minimal supervision\n\nA willingness to jump in and work side-by-side with technicians\n\nYou have strong organizational, documentation follow-through skills and take pride in the quality of your work\n\nYou are passionate about decarbonization and addressing climate 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