HR Senior Administrative Assistant

Clearance Level
Stennis Space Center, Mississippi

REQ#: RQ91370

Travel Required: Less than 10%
Public Trust: None
Requisition Type: Regular

GDIT has partnered with NASA to consolidate select Procurement, Finance, Human Resources (HR) and Information Technology activities from the ten NASA Centers into a single shared services center located at Stennis Space Center in southern Mississippi.

The NASA Shared Services Center (NSSC) mission is to provide timely, accurate, high quality, cost-effective, and customer focused support for selected NASA business and technical services.  

GDIT has an opportunity at the NASA Shared Services Center (NSSC) for a Senior Administrative Assistant to contribute to our success in providing HR Services for NASA.  This will be a full-time position onsite at Stennis Space Center in Mississippi.

The Administrative Assistant will provide senior level administrative support to the HR Staffing Services Branch Leadership who are responsible for oversight, management and delivery of Staffing Services for NASA.

Duties and responsibilities:

  • Compose correspondence about administrative matters and general office guidance for supervisors approval. 
  • Prepare materials needed by the supervisor for conferences, correspondence, appointments, meetings, etc., and inform supervisor on matters to be considered.
  • Prepare special or one-time reports, summaries, or replies to inquiries, selecting relevant information from a variety of sources such as reports, documents, correspondence, other offices, etc., under general directions.
  • Maintain databases, compile and analyze data, prepare MS Excel and PowerPoint support when needed. 
  • Record minutes during meetings.
  • Research and respond to inquiries and escalate and/or route to appropriate personnel as necessary.
  • Coordinate travel arrangements for manager and employees that require upper management approval.  Ensures accuracy of travel dates and reserves appropriate accommodations to facilitate travel convenience for concerned parties. 
  • Assist with special projects involving preparations for customer and senior management meetings. 
  • Perform other administrative duties as assigned.


  • High School Diploma.
  • Eight or more years of administrative assistant experience.
  • Experience working with administrative practices and procedures.
  • Experience working with writing styles such as grammar, sentence form and structure.
  • Expertise in MS Office Suite, particularly Excel, PowerPoint, Word and Outlook.
  • Strong communication and interpersonal skills for communicating with internal and external personnel of all levels.
  • Strong organizational skills to balance work and prioritize tasks.


We are GDIT. The people supporting some of the most complex government, defense, and intelligence projects across the country. We deliver. Bringing the expertise needed to understand and advance critical missions. We transform. Shifting the ways clients invest in, integrate, and innovate technology solutions. We ensure today is safe and tomorrow is smarter. We are there. On the ground, beside our clients, in the lab, and everywhere in between. Offering the technology transformations, strategy, and mission services needed to get the job done.

GDIT is an Equal Opportunity/Affirmative Action employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or veteran status, or any other protected class.