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Administrative Assistant

Coreone · Sterling, VA · Posted Jul 8, 2026

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Join our team at Core One! Our mission is to be at the forefront of devising analytical, operational and technical solutions to our Nation's most complex national security challenges. In order to achieve our mission, Core One values people first! We are committed to recruiting, nurturing, and retaining top talent! We offer a competitive total compensation package that sets us apart from our competition. Core One is a team-oriented, dynamic, and growing company that values exceptional performance!

Core One seeks a Receptionist/ Administrative Assistant who will work from the front desk and present a professional and friendly demeanor while greeting staff and guests while ensuring overall efficiency of the office.

Salary Range: $70,000 - 75,000

PRIMARY RESPONSIBILITIES

Provide a high level of customer service over the phone, in person and online while interacting with staff, visitors and customers

Pick up, drop off, prepare, sort and disperse mail, which may require travel to local USPS, FedEx or UPS facilities

Check-in and check-out guests including issuance of visitor badges and maintenance of the parking access logs

Maintain all conference rooms including tracking of calendars, preparing meeting spaces by ensuring supplies are stocked and the rooms are tidied between meetings

Maintain the office kitchens including ordering and inventory of all kitchen supplies as well as maintenance of the coffee machines

Oversee and maintain common areas ensuring a clean and welcoming environment

Manage office supply inventory, to include company swag and coordinate with vendors as appropriate

Assist with corporate events, including coordination, setup, execution and breakdown

Assist with general administrative tasks from other departments as time allows

REQUIRED QUALIFICATIONS

High school diploma

Minimum 1 year experience in an administrative position

Ability to multitask and prioritize items effectively

Flexibility and willingness to help in other departments as needed

Capable of working in a team environment

Interpersonal communication skills and computer skills

Proficient in Microsoft Office 365

Able to execute tasks with effective follow up

Excellent business etiquette, work ethics, appearance, verbal and phone communication manners

Must have own transportation and ability to run general office errands

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