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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