There may be no difference, it depends on how the job description is written. Primarily, an administrator does most of their work before the contract is signed while a manager does most of their work on existing contracts.Contract administration is the work done before a contract is signed into effect and contract management covers everything done after signing. The Contract Documents form the entire agreement between Owner and. Design-Builder. Bachelor's degree from an accredited institution. Most Announcements will remain on this page for at least two weeks. Filing instructions are provided with each announcement and state how and where to apply. A contract manager focuses on the development and execution of contracts. Posted :35 AM. Eaton's IS AER FED division is currently seeking a Aerospace Lead Contracts Manager. Click on the icon in the list below to obtain the complete Job Announcement.