Electrolysis and electrolyser jobs

Electrolysis and Electrolyser Jobs in Renewable Energy

Electrolysis splits water into hydrogen and oxygen using electricity, and the jobs under this tag cover the stack itself, the balance of plant around it, the factories that build them, and the technicians who commission and service them on site. Three chemistries compete and they are not interchangeable career tracks. Alkaline is the oldest and cheapest per kilowatt but dislikes rapid load changes. PEM tolerates a variable solar or wind input, at the cost of iridium and platinum catalysts. Solid oxide runs hot, reaches the highest efficiency, and only makes sense where waste steam is already available.

China set the economics

Anyone entering this field should understand where the manufacturing sits. China accounts for 65% of global electrolyser capacity that has been installed or reached a final investment decision and holds nearly 60% of global electrolyser manufacturing capacity. Chinese factories alone can build more than 20 GW a year, far above what the world currently orders.

Overcapacity of that size changes what European and American manufacturers hire for. The work has shifted from adding production lines to lowering cost per kilogram and proving stacks survive their warranty. Current listings make that plain: Director of Stack Reliability, Staff Engineer for Stack Projects, formation and process engineering roles, electrochemistry scientists, and a machine learning intern working on electrolyser data. Degradation is the commercial problem. A stack that loses efficiency faster than modelled destroys a project's economics long before it fails outright, and nobody has twenty years of field data on modern designs.

Where the roles are

Bengaluru carries more listings under this tag than anywhere else, because Ohmium builds its PEM systems in India and exports them. Dresden follows, where Sunfire develops solid oxide and alkaline plant. Beyond those sit Wallingford in Connecticut and Rochester in New York on the American side, Oslo for Nel, Bourbourg in northern France, Hamburg and Berlin, and Napajedla in Czechia.

Ohmium and Plug Power post the most roles, followed by Nel Hydrogen, Sunfire, and H-TEC SYSTEMS. Twelve in Berkeley applies the same electrochemistry to carbon dioxide rather than water, which is the crossing point into power-to-X and e-fuels. Verkor appears here too, for a reason worth noting: cell formation in a battery gigafactory and stack conditioning in an electrolyser factory draw on the same electrochemical process knowledge, and people move between them more easily than either industry expects. Aarhus University rounds out the list with research posts, a reminder that catalyst and membrane work is still partly academic.

What employers screen for

Two profiles dominate. The first is electrochemistry proper: membrane electrode assemblies, catalyst loading, current density, and the diagnostics that separate a membrane problem from a contamination problem. The second is manufacturing and field engineering, which is where volume actually gets built, and which recruits from chemical and process engineering, automation, and industrial gas backgrounds. Field service engineer and commissioning specialist are the most frequently advertised titles under this tag, ahead of any research role.

The demand-side caveat belongs in any honest account. The IEA now expects 37 million tonnes a year of low-emissions hydrogen by 2030 from announced projects, down from 49 Mtpa a year earlier, with only 9% of that pipeline past final investment decision. Electrolyser makers have lived through one cycle of cancelled offtake already.

What survives is the equipment that is running. Service contracts, spare stacks, and uptime obligations follow every unit sold, which is why technician and commissioning work under this tag and in hydrogen infrastructure has stayed steady while project development has not.