Robert and Karen Armknecht have listed for sale a four-bedroom, 2.5-bath home at 16350 N. 108th Way in Scottsdale for $650,000.

The 3,027-square-foot house in the North Scottsdale neighborhood was built in 1996. Helene Cass of RE/MAX is the listing agent.

Mr. Armknecht serves as the executive vice president and chief financial officer at Carefx, a provider of information technology solutions to healthcare organizations. He has 17 years of financial management experience, and more than 10 years in the health sciences industry. He has previously served as a controller at SCINET Inc., Medical Manager Health Systems and WebMD, and he was vice president of finance at the Molecular Profiling Institute Inc.

He received his B.A. in economics and political science from Occidental College and his masters of science in industrial administration from Carnegie Mellon University.

Ms. Armknecht is the owner, a marketing research consultant and contractor at Armknecht Consulting. She has previously served as the president of the board at the Arts and Business Council, as a lead market research analyst at SRP, as a senior market research analyst at Winona and as a intellectual property paralegal at Mason, Fenwick and Lawrence.

She holds an A.B. in diplomacy and world affairs from Occidental College and an M.B.A. in marketing from the Thunderbird School of Global Management.

According to BlockShopper.com, there were 3,592 home sales in Scottsdale in 2008, with a median sales price of $320,000.