Be Part of Something Innovative

Join a company that is on the cutting edge of innovation,
with an energized & progressive culture.


Please note: We have been experiencing several cases of fake recruiters impersonating Proton employees and reaching out to people regarding jobs with Proton. If you have not applied for a job with us, if the job is not listed on our website, or if you have any other reason to suspect the validity of the correspondence, please reach out to Human Resources directly.


Empowering the Future, Today.

Are you looking for an opportunity to advance your career? Our company culture is driven by personal initiative combined with loyalty and commitment to the team.  We value individuals with the ability to convert complex issues into simple solutions, excellent communication skills, and a strong sense of urgency in doing what it takes to get the job done. Contact Proton OnSite today!

What our Employees are Saying

Kim Georgiades

Kim Georgiades

Inside Sales Representative

Proton OnSite is a great place to work because we are all working together to accomplish our goals and grow the business. There is no “I” in this team. 

Joe Grinvalsky

Joe Grinvalsky

Applications Engineer

Everyday is a welcomed challenge and learning experience.The management team is encouraging and supportive.

Mike Spanner

Michael Spaner

Director of Global Service

Proton OnSite offers unique opportunities to learn, grow, and make a difference. It is wonderful to be working with a team of smart and dedicated creatives. The breadth and depth of the team is amazing. The variety of products and our global reach adds to the fun. Our customers are leveraging the Proton OnSite's technology to revolutionize their processes, their companies, their communities, and the world.

Available Positions

Product Management

Project Management

Senior Mechanical Design Engineer Read More

Technical Service


Drafting & Document Control Coordinator Wallingford, CT and Remote Read More

Principal Engineer, Regulatory Compliance Read More


Director of Sales and Business Development - North America Read More