Engineer - Field Services
Ohmium
Company Overview
Ohmium International
Fremont, CA, United States
2019
Approximately 550 employees (source: linkedin.com). Total funding raised of $311.2 million as of 2023 (source: cbinsights.com).
What They Do
Ohmium specializes in the production of green hydrogen through advanced Proton Exchange Membrane (PEM) electrolyzers. These electrolyzers utilize water and renewable energy sources to generate high-purity hydrogen without relying on fossil fuels (source: ohmium.com). Their flagship product, the Lotus Mark 2 electrolyzer, features a hyper-modular design that includes a centralized water purification unit, glycol-based cooling, and proprietary power electronics, all integrated into a compact footprint that allows for vertical stacking and deployment in various climates (source: ohmium.com). The company offers services such as global remote monitoring and maintenance, ensuring scalability from megawatt to gigawatt levels through standardized designs manufactured in India (source: ohmium.com). Target markets include industrial applications, power generation, and transportation fuels, focusing on sectors that are challenging to decarbonize across the U.S., Europe, India, and the Middle East (source: ohmium.com). Ohmium's competitive edge lies in its high current density, dynamic ramping capabilities, and superior iridium utilization, positioning it favorably against industry competitors like ITM Power and Siemens Energy (source: ohmium.com).
Projects & Track Record
Ohmium has established a robust global project pipeline exceeding 2 GW, demonstrating its reliability in extreme conditions (source: ohmium.com). Among its notable projects is the supply of a 10 MW PEM electrolyzer for Croatia's INA Rijeka Refinery, which aims to decarbonize operations and fuel transport, supported by the EU Recovery and Resilience Facility (source: advancedbiofuelsusa.info). In Spain, Ohmium has committed to supplying up to 52 tons of green hydrogen annually for the EFFI SOLAR GREENH2 PORTUARIO project, which will replace methane in gas flares, significantly reducing CO2 emissions (source: ohmium.com). Additionally, the company signed a term sheet for 300 MW PEM electrolyzers for the OFFSET offshore floating green hydrogen and ammonia project in Southern Europe, with production expected by 2029 (source: canvasbusinessmodel.com). Ohmium's partnerships include collaborations with Invenergy for turbine cooling at the Nelson Energy Center and involvement in India's first green methanol plant (source: cbinsights.com).
Recent Developments
In 2023, Ohmium successfully raised $250 million in Series C financing led by TPG Rise Climate, aimed at scaling manufacturing to 2 GW annual capacity and expanding R&D efforts (source: esgtoday.com). This followed a $45 million Series B round in April 2022, bringing total funding to $311.2 million by late 2025 (source: cbinsights.com). The company also inaugurated a PEM electrolyzer gigafactory in India, which is expected to abate 4 million tons of CO2 annually (source: ohmium.com). In 2024, Ohmium secured a term sheet for a 300 MW project in Southern Europe and partnered for India's first green methanol plant, showcasing its commitment to expanding its footprint in the green hydrogen sector (source: canvasbusinessmodel.com). By 2025, Ohmium achieved UL Solutions' first industrial certification for hydrogen generators using water electrolysis, further solidifying its position in the market (source: ohmium.com).
Working There
Ohmium offers a diverse range of roles across engineering, manufacturing, operations, R&D, compliance, and executive positions, attracting talent from various sectors including electrolyzer and fuel cell technology (source: ohmium.com). The company is primarily hiring for its Fremont, California headquarters, with additional opportunities linked to its gigafactory in India and projects across the U.S., Europe, and the Middle East (source: builtin.com). Ohmium's culture emphasizes innovative problem-solving, speed of execution, and a commitment to human rights compliance, reflecting its mission to advance efficient PEM technology (source: ohmium.com). While specific employee benefits are not publicly documented, the company promotes operational perks through roles in global remote monitoring and performance guarantees (source: ohmium.com). Job seekers are encouraged to visit their careers page for current openings (source: ohmium.com).
Last updated on Feb 23, 2026 | Report an issue
Job Description
The Engineer - Field Services cares for a fleet of deployed electrolyzers. Specifically tasked with all installation, commissioning, and ongoing maintenance activities, the individual utilizes an array of tools, documentation and programs to execute field work.
Duties and Responsibilities
- Overview the Installation, commissioning, and field tests activities of Hydrogen Generating Equipment performed by 3rd parties meet Ohmium's safety and quality standards and are accomplished in a timely manner
- Execute any assigned task (regular maintenance, troubleshooting, commissioning, etc..) following the most strict safety and quality standards.
- Work safely (outdoors) in accordance with company, governmental, and local jurisdiction standards.
- Shift and site operations, troubleshooting and maintenance.
- Execute maintenance activities in accordance with available documentation and standards.
- Coordinate with contractors, customers and ROC to assure all the maintenance activities take place in a safe and timely manner following specific technical procedures.
- Basic knowledge to handle and utilize electrical test equiments like Multimeter, Clamp meter and insulation meter. Understand both electrical and Mechanical parts of the electrolyser system.
- Support the development of documentation and standards.
- Complete diagnostics of electrolyzers, RO water and filter system, Gas dryer and High pressure piping.
- Drive constant process and documentation improvements to eliminate waste and increase reliability.
- Manage complex workflows, including the efforts of sub-contractors & EPC Partners / customers.
- Manage spare part and tool kit inventories & reduce operation cost. Ensure Clean and lean Site.
- Register Defect and Material requirements. Have good working knowledge with MS Office.
- Exceed and follow customer facility standards and policies.
- Interface with customers and support their needs. First technical point of contact.
- Produce timely and detailed service reports.
- Support an on-call watch bill (standby status) and maintain watch list.
- Operate a service vehicle safely and maintain a driving record in good standing.
- Operate H2 Gas Compressor at site.
Location, Travel and Work Environment
- Ability to travel domestically and internationally to support global product locations (Includes : Middle East, Europe,USA). Traveling requirements up to 50-60% of the time. Long periods (1-2 months) required for commissioning and start up activities.
Formal Education, Certifications or Equivalent
- Bachelor's degree or Diploma in Electrical/Mechanical/Electronics Engineering in science, technology
- A combination of education, training, and experience.
Competencies
- Strong safety mindset
- Strong hands-on capability
- Strong general engineering principles
- Good craftsmanship in all work
- Ability to lead by example, multitask, and delegate as needed
- High level of candor - ability to speak up, and do the right thing
- Ability to create positive energy and "Together We Win" mindset with team
- Excellent Customer Focus
- Well organized and detail oriented
- High level in English, both written and spoken. Another European language will be a plus. (Especially Croatian, Italian or Spanish)
Work Experience
- 5-10 years of experience working on complex, deployed systems with Erection, commissioning, testing, Installation, maintenance, and operations exposure.
- Those candidates who have the maintenance/service/operation experience in oil&gas maintenance (as conctractor), industrial gases, Solar Plant/Power plant/DG set installation/ Compressor/Gas/Chemical/RO/DM plant will be given preference.
- Experience of HMI, SCADA will be an added advantage.
- Experience working in international and multicultural environments
Ohmium is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
Apply now
Job expired?Please let Ohmium know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
Apply now
Job expired?Please let Ohmium know you found this job on Rejobs. It helps us grow and get more people working in renewable energy.
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About the role
July 9, 2026
July 10, 2026
Full time
Flexible
Company
- Croatia
5-10 years
UTC+01:00