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Administrative Assistant

Core One
CompanyCore One
CategoryOperations & Admin
LocationSterling
RemoteOn-site (inferred)
EmploymentNot stated
LevelNot stated
SalaryNot stated by the employer
Posted15 May 2026
Last verified30 Jul 2026
SourceEmployer career page (greenhouse)
Applications are handled by the employer, not by us.Apply on the employer's site →
Description
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.   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 Salary Range: $20/hr - $25/hr The pay range reflected above is a general guideline for this position and labor category and is not a guarantee of a specific salary or offer. Final compensation is determined based on factors including, but not limited to, relevant experience, education, certifications, security clearance level, contract requirements, geographic location, and internal pay equity, and may reflect market data specific to the awarded contract. __PRESENT __PRESENT
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Administrative Assistant — Core One · Job Opportunities API