ManTech Administrative Assistant in Chantilly, Virginia

Become an integral part of a diverse team that leads the world in the Mission, Cyber, and Intelligence Solutions group. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

The Administrative Assistant position performs a variety of administrative duties providing mission support in one or more functions or business areas within the NRO Directorates. The nature of Administrative Assistant work varies from transactional in nature and requires general knowledge of basic administrative processes (Entry Level) to moderately complex (Intermediate Level).

Responsibilities include, but are not limited to:

  • Recommend innovative processes to improve the efficiency and effectiveness of the office

  • Compose written communication in response to complex customer queries

  • Prepare routine status reports and track office-related metrics

  • Manage routine website content updates and coordinate more complex website changes with webmaster

  • Coordinate scheduling, organizing, and execution of meetings, events, conferences, and off-sites

  • Attend meetings, events, and forums

  • Assist in maintaining inventories, records, and receipts

  • Coordinate office renovations and relocation activities

  • Support TIER actions, assign actions to the appropriate divisions or branches, follow up on actions, coordinate responses in a non-conflicted manner for senior management review, provide status reports, and participate at NRO-wide TIER meetings

  • Maintain a schedule of appointments fora manager or office

  • Answer routine telephone calls, direct calls and take messages

  • Greet and escort visitors

  • Retrieve, sort, and distribute incoming mail, newspapers, faxes, and other publications/documents

  • Arrange for the delivery of outgoing mail/packages with the mailroom

  • Prepare travel/training arrangements and process travel/training accounting/vouchers for the program office

  • Draft, proofread, edit and coordinate correspondence

  • Perform research and retrieve information from databases and other resources

  • Maintain tracking records and filing systems; archive files

  • Maintain, update and serve as focal point for databases or spreadsheets

  • Assist in planning, scheduling, organizing, and execution of meetings, events, conferences, and off-sites

  • Participate in meetings and events: may serve as recorder and may present position-related information

  • Prepare access rosters and request security clearance transfers

  • Perform administrative back up support for other offices

  • Detail-orientated

  • Ability to communicate effectively and concisely using a variety of styles and techniques appropriate to the audience

  • Ability to participate productively as a contributing member in a team environment

  • Strong interpersonal skills

  • Ability to be discreet and maintain confidentiality

  • Proficient in the use of Microsoft Office and standard computer applications

  • Knowledge of proper English usage, spelling, grammar, punctuation and sentence structure to ensure that written materials prepared and reviewed are complete, succinct, and formatted correctly

Position Requirements:

  • Experience with protocol and precedence; NRO/IC/DoD structure, regulations, directives, and policies

  • High School Diploma or GED equivalent and 5 years of experience.

  • NRO, IC, then DoD work experience is desired in order of preference.

  • Experience with Awards and Decorations, preferably with military background

Clearance Requirements:

TS/SCI with CI Poly


Requires High School diploma or equivalent, and five to six years of related experience.


Equivalent Experience/Education, Bachelor's Degree

Years of Experience

08-10 years w/High School Diploma, 02-04 years w/Bachelors Degree

Position Type





ManTech International Corporation is comprised of approximately 7,300 talented employees who use advanced technology to help government and industry meet some of their greatest challenges around the world. We adhere to the simple, no-nonsense values on which ManTech was founded more than four decades ago, aligning squarely with the mission objectives of our customers. As our customer base continues to expand and diversify, we continue to diversify our workforce and solutions. Nearly half our employees have a military background, and approximately 70 percent hold a government security clearance. As a leading provider of innovative technology services and solutions for the nation's defense, security, health, space, and intelligence communities; we hold nearly 1,100 active contracts with more than 50 different government agencies.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Waretime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law. If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

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