Derek Johnson has joined the staff of Schlotfeldt Engineering, Inc. of Webster City as a project engineer. Johnson previously worked with Schlotfeldt Engineering from 1999 to 2003 at the LeMars and Webster City offices.
Johnson is an Iowa State University civil engineering graduate and is originally from Akron. He and his wife Kristen have one son, Cole.
Schlotfeldt Engineering is a consulting engineering and land surveying firm with offices in Webster City, Fort Dodge, LeMars and Beresford, South Dakota.
Next year will mark the firm's 40th anniversary of being in business.