+1 701 317 7583   •   SEI LLC   •    A Ygomi Company
SEI - Contact Center Services


About SEI

About SEI

SEI is a PCI-certified, 24x7 contact center with approximately 250 employees in the U.S. Our employees work from one of our two contact centers in Grand Forks, North Dakota, and Missoula, Montana, or out of their homes in Illinois, Minnesota, Montana and North Dakota.

For more than 25 years, leading companies like Citibank, Sonic Drive-In and Shell Oil have turned to SEI for high-quality customer service, help desk, and sales support. SEI works closely with its customers to provide flexible, high-quality services that enhance productivity and customer satisfaction so that our customers can focus on their own customers' needs.

SEI is a subsidiary of Ygomi LLC. Ygomi operates three technology-based companies that deliver innovative software and services for essential business needs. As a Ygomi company, SEI draws on the global infrastructure and cutting-edge technologies of its sister companies:


ArrayComm Logo
ArrayComm leads the global wireless voice and data communications industry in digital baseband processing software. Incorporated with customers' equipment, ArrayComm's physical layer solutions provide greater speed, capacity, and coverage to improve network economics while minimizing manufacturers' engineering investment and time-to-market.


Connexis Logo

Connexis partners with vehicle manufacturers and Tier-1 suppliers worldwide to deliver a full range of competitively priced vehicle communications services, including traditional telematics services, semi-open-platform multimedia, in vehicle navigation support, and services for electric vehicles (EVs).