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Ohmium Tech Stack

PEM electrolyzer manufacturer for distributed green hydrogen production

Renewable Energy Semiconductor Manufacturing Fremont 501–1,000 employees Founded 2019 Privately Held

Ohmium manufactures modular proton exchange membrane (PEM) electrolyzer systems for on-site green hydrogen generation. The tech stack is tightly focused on power electronics (MATLAB Simulink, ETAP, TI C2000 microcontrollers, CAN protocols) and embedded systems, reflecting the hardware-first nature of electrolyzer design and control. Active projects span electrolyzer platform power electronics, stack assembly, and diagnostics—paired with pain points around cost-competitive power conversion and scaling manufacturing—indicating a company in transition from prototype to volume production.

Tech Stack 14 technologies

Core StackMATLAB MATLAB Simulink Multimeter Microsoft Office FMEA ETAP C/C++ TI C2000 CAN CAN-FD I2C GPIO EEPROM

What Ohmium Is Building

◆Challenges

Cost-effective, scalable power conversion
Reduce operation cost
Eliminate waste
Increase reliability
Scaling up cost-competitive alternatives
Streamlining contract lifecycle
Optimizing commercial legal processes
Emi compliance
Cost reduction in build and testing
Tester allocation optimization

▲Active Projects

Installation of hydrogen generating equipment
Data-driven hr dashboards
Workplace safety initiatives
Electrolyzer platform power electronics
Diagnostics of electrolysers and associated systems
Process and documentation improvement initiatives
Electrolyzer stack build activities
Core hr process optimization
Documentation and standards development
Workflow management with sub-contractors

Hiring Activity

Decelerating20 roles · 5 in 30d

Department

Engineering

15

HR

2

Logistics

1

Sales

1

Seniority

Mid

4

VP

4

Staff

3

Director

2

Lead

2

Junior

1

Manager

1

Principal

1

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About Ohmium

Ohmium designs and manufactures vertically-stackable PEM electrolyzer systems that produce green hydrogen at industrial scale. The product is deployed across North and South America, Europe, India, and the Middle East, serving commercial and industrial customers seeking cost-competitive hydrogen for decarbonization. Founded in 2019, the company employs 501–1,000 people and is headquartered in Fremont. The engineering-heavy department mix (15 engineering roles out of 21 active postings) reflects the hardware development and manufacturing optimization focus, with concurrent investment in HR process scaling and supply-chain coordination.

HeadquartersFremont

Company Size501–1,000 employees

Founded2019

Hiring MarketsIndia, Germany

Frequently Asked Questions

What does Ohmium's technology do?

Ohmium manufactures modular PEM electrolyzer systems that produce green hydrogen on-site for industrial and commercial applications. The systems are vertically stackable, integrate advanced power electronics, and are designed for rapid deployment and cost-effective operation.

What tech stack does Ohmium use?

Ohmium's stack centers on power electronics and embedded systems: MATLAB Simulink for simulation, ETAP for electrical design, TI C2000 microcontrollers, CAN/CAN-FD protocols, and C/C++ for firmware. FMEA and multimeters support design validation and testing.

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