Chicago, Dallas, Los Angeles, San Diego, Boston, Detroit, Sacramento and San Francisco Harley Ellis Devereaux (HED) is seeking a senior mechanical engineer to join our growing mission critical sector team. This role offers the opportunity to grow with the company, and partner with team members across the country. As a senior mechanical engineer at HED you will be responsible for developing national program level design solutions directly with clients and managing the project design team implementing these solutions from schematic design through construction administration while providing leadership and mentorship to engineering staff.    TYPICAL DUTIES: PROJECT RELATED  Knowledge