Employee Directory

Executive Staff

Amy Preator

Director of Human Resources

As Director of Human Resources, Amy Preator manages employee benefits and compensation, maintains consistency among policies and procedures, and oversees recruitment, hiring and employee development and training. 

Mitch Elfstrand

Vice President of Engineering and Operations

As Vice President of Network Engineering and Operations, Mitch Elfstrand oversees the day-to-day development and growth of SDN's network, as well as heading up a team of highly skilled Engineering and Operations staff that architect and maintain all of SDN’s Products and Services on a daily basis.

Nick Kortan

Vice President of Corporate Operations

As SDN's Vice President of Corporate Operations (CFO), Nick directs and oversees all aspects of the finance, accounting and credit functions.

Dennis Cromwell

VP of Sales

Dennis Cromwell has been a member of the SDN Team since 2006 and enjoys working with customers, learning about their unique business challenges and working toward making their businesses run more efficiently.

Sales Staff

Melanie Sage

Network Account Executive

Melanie is responsible for promoting MPLS solutions for customers with more than one location, Internet service from bandwidths of 10 Mbps and greater, and managed solutions.  Melanie can also help with your hardware needs in the areas of Cisco or Mitel phone solutions, Nimble storage, Fortinet Firewalls, Meraki and Cisco wireless, Cisco routing/switching, and Cisco UCS servers. 

Ryan Punt

Wholesale Carrier Relations

Ryan Punt, who has been in the business since 1999, sells wholesale/carrier services to companies across the nation. He and JJ Anderson are working together to assist you on any wholesale account needs. 

Dan Gabrielson

Network Account Executive - West River, Rapid City, Pierre

Dan Gabrielson’s interesting work history includes stints as a bicycle mechanic and as a fossil hunter. 

He joined SDN’s staff in November 2010 and specializes in selling broadband Ethernet and Internet connectivity.

Dean Putnam

Technical Sales Engineer, CPE

Dean Putnam has been with SDN Communications for 11 years and helps clients build large communications networks that include computers and telephony.

Mark Olson

Phone Systems and Network Equipment Sales

Mark Olson is a senior account executive with more than ten years consulting experience within the technical field. He loves the outdoors, especially hunting and boating in the summer, and uses his musical talents to play the drums for his church's worship team.

Dave Fehrs

Phone Systems and Network Equipment Sales

Dave specializes in selling phone systems, networking equipment, network configuration solutions, servers and data storage, and information security solutions.

Eric Erickson

Senior Account Executive

Eric spent his first five years in the telecom industry in Brookings with Swiftel Communications, which is one of SDN’s 17 member companies. He also worked for 13 years for companies in Phoenix and Sioux Falls before joining SDN.

Dale Buehler

Senior Account Executive

Dale offers customers a full spectrum of telecommunications services: broadband connectivity, premise-based equipment and managed services. He says today's communications features allow even small companies to feel and act like big companies.