About SEI


Company Information

A closer look at the businesses we serve, our mission, our history of innovation and our unique culture.


Find out if you’re the employee we’ve been waiting for. Search open positions and apply online.


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Office Locations

SEI serves clients from numerous offices worldwide.

New ways. New answers. New opportunities.

SEI employs over 2,300 people in the US and offices around the world in London, Dublin, Hong Kong, Canada, and more.

Our award-winning 93 acre campus is located in Oaks, PA. The space here was designed to promote an advanced concept of an open environment:  no walls or offices and furniture on wheels.

“By bringing in new people, we all learn together,” Al West, CEO & Chairman