Two major federal contractors, Virginia-based BWX Technologies [BWXT] and Dallas-based Jacobs Engineering [JEC], announced new executive appointments in the past week.

Colin Jones, most recently with AECOM [ACM] is the new vice president and deputy general manager of Jacobs’ North American Nuclear business unit, the company said Friday. He has more than 20 years of experience in government and public affairs, along with business development, and will work closely with Jacobs’ government clients. Jones started the new job in June.bwxt_logo

Jones had been vice president of strategy, nuclear, and environment, at AECOM for one year, and the prior two years had been vice president for key accounts at CH2M, which is now a Jacobs subsidiary. From March 2010 until March 2015, he worked at the Energy Department’s Office of Environmental Management, serving as a chief of staff and a senior adviser.

“We look forward to Colin’s return to the company as he brings valuable insight and expertise to our nuclear business, allowing us to deliver maximum value to our clients,” Karen Wiemelt, Jacobs Aerospace, Technology, Environmental and Nuclear senior vice president and general manager for North American Nuclear, said in a press release.

Jacobs work with both commercial and government nuclear clients includes decontamination and decommissioning, as well as site closure, and other services.

BWXT announced Thursday John Stewart has been named president of its Tennessee based subsidiary, Nuclear Fuel Services, effective July 1. Nuclear Fuel Services provides nuclear fuel for the U.S. Navy.

Since 2012, Stewart has been president and general manager of BWSR,  a BWXT joint venture that provides decommissioning and demolition and other services for Naval Nuclear Laboratory sites. Before that, he was chief of nuclear safety at the Y-12 National Security Complex in Oak Ridge, Tenn.

A 25-year veteran of the U.S. Navy, Stewart worked as a staff engineer at the Naval Reactors headquarters in Washington, D.C., according to a BWXT press release. “John’s impressive history with BWXT and the U.S. Navy make him uniquely suited for this leadership role at NFS,” BWXT Nuclear Operations Group President Joel Duling said the release. Stewart replaces Duling as head of NFS.

The Jacobs release did not say who Jones is replacing.