Former Department of Energy and National Nuclear Security Administration official Scott Samuelson is joining Longenecker & Associates as a senior associate. Samuelson retired from federal service after more than 30 years last month, most recently serving as a senior advisor within the National Nuclear Security Administration’s Office of Acquisition and Project Management. His previous positions included stints as manager of the DOE Office of River Protection at Hanford, and as federal project director for the National Ignition Facility. “I’ve known and worked with Scott for more than 20 years,” Longenecker & Associates President John Longenecker said in a statement. “His experience in addressing the key challenges in every complex project will be a great asset to our team and our clients.”