CDI Corporation is a privately held US company providing engineering, procurement, construction management and staffing services to clients in a range of industries including energy, chemical, semiconductor and battery manufacturing.

[2] In March 1997, the company elected Mitch Wienick to the position of CEO and President, to replace the retiring Walter Garrison.

[2] In 2001, Mitch Wienick announced his retirement and Roger H. Ballou was elected as CDI's new president and CEO.

[2] In 2003, CDI announced the acquisition of AndersElite, a United Kingdom-based provider of building and construction professionals on a permanent and temporary basis.

[7] In 2011, Paulett Eberhart, a veteran of Electronic Data Systems, was announced as CDI's new president and CEO, replacing the retiring Roger Ballou.

[8] In August 2014, the company announced a new CEO, former Investcorp, Sears and Lehman Brothers executive Scott J.

[9] In October 2015, CDI acquired Boston, Massachusetts-based EdgeRock Technologies LLC, a private IT staffing company, for $30 Million.