What departments does Proton OnSite have?

Proton OnSite has employees across 5 departments including Marketing, Arts & Design, Engineering, Sales, Administrative.

What is the largest department at Proton OnSite?

The largest department at Proton OnSite is Engineering with 2 employees.

Where are Proton OnSite employees located globally?

Proton OnSite has employees across 4 continents and 5 countries including Nigeria, China, Saudi Arabia, United States Of America, Brazil.

How has Proton OnSite's team size changed over time?

Proton OnSite's team has decreased from approximately 89 to 38 employees based on available data.

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Proton OnSite Employee Directory

Oil & EnergyConnecticut, United States51-200 Employees

Proton OnSite designs and delivers hydrogen production and gas-generation systems for a range of industrial needs. The equipment is deployed globally, with installation and ongoing support ensuring reliable operation across continents, and the company has expanded its offerings to include broader gas generation and packaged solutions.

Headquartered in Wallingford, Connecticut, the company has operated since 1996, serving power plants, semiconductor manufacturers and laboratories. It maintains relationships with the U.S. military, aerospace, fueling and renewable energy industries, reflecting a diversified customer base across defense and energy markets. Since 2017, Proton OnSite has been part of Nel Hydrogen US, following Nel ASA's acquisition of Proton Energy Systems.

Proton OnSite Global Highlights

North America
43

United States Of America
43

Asia
3

China
2
Saudi Arabia
1

South America
2

Brazil
2

Africa
1

Nigeria
1

Proton OnSite's Leadership

C. V.
Director Of Corporate Marketing
Mobile Phone
Email
V. T.
Senior Manager
Mobile Phone
Email
J. M.
Piping Designer
Mobile Phone
Email
A. M.
Electrical Engineer
Mobile Phone
Email
G. J.
It Executive
Mobile Phone
Email
J. E.
Sales Laboratory Domestic Market
Mobile Phone
Email
L. M.
Executive Assistant
Mobile Phone
Email
M. O.
Information Technology Enterprise Engineer
Mobile Phone
Email

Proton OnSite Employee Metrics

100%

50%

2026

2025

Engineering
Finance
Sales
Marketing
Program & Project Management
Other
Customer Success
Accounting
Manufacturing
Administrative
Community & Social Services
Entrepreneurship
Arts & Design
Business
Civil Engineering & Construction
Business Development

Contact profiles from Proton OnSite

Name

Title

Contact

Location

Last Update

C. V.
Director Of Corporate Marketing
Mobile Phone
Email
May 29, 2026
V. T.
Senior Manager
Mobile Phone
Email
Oct 23, 2024
J. M.
Piping Designer
Mobile Phone
Email
Sep 08, 2026
A. M.
Electrical Engineer
Mobile Phone
Email
Oct 17, 2024
G. J.
It Executive
Mobile Phone
Email
Oct 21, 2024
J. E.
Sales Laboratory Domestic Market
Mobile Phone
Email
Oct 17, 2024
L. M.
Executive Assistant
Mobile Phone
Email
Oct 17, 2024
M. O.
Information Technology Enterprise Engineer
Mobile Phone
Email
Jan 20, 2026
M. G.
Mbr
Mobile Phone
Email
Jun 27, 2025
J. N.
Mobile Phone
Email
Oct 23, 2024

Frequently Asked Questions

What is Proton OnSite known for?

Proton OnSite was founded in 1996 and operates in the Oil & Energy industry. You can contact Proton OnSite's main corporate office by phone at

+1-203-678-****

. Explore Proton OnSite's company overview page for more information.

What is Proton OnSite's most common email format?

Proton OnSite employees' email format typically follows the pattern of FLast@protononsite.com. Trying to find reliable and up-to-date employee contact data? Find more Proton OnSite email formats with LeadIQ.

How many employees does Proton OnSite have currently?

Proton OnSite has approximately 67 employees as of July 2026. These team members are located across 4 continents, including North America, Asia and South America.

Who are Proton OnSite's key employees and leadership?

As of July 2026, Proton OnSite's key employees include:

Director Of Corporate Marketing: C. V.
Senior Manager: V. T.
Piping Designer: J. M.
Electrical Engineer: A. M.
It Executive: G. J.

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Proton OnSite Employee Directory

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