Office Assistant
Antithesis Operations LLC
About Antithesis We are a well-funded deep tech company headquartered in Northern Virginia, building a suite of autonomous software reliability and testing products. Our team is collaborative, highly technical, and customer-focused. We prioritize the long-term in our structure, our products, and our relationships. As we scale, we are looking for an organized and proactive Office / Administrative Assistant to help keep our operations running smoothly.
About the Office Assistant position We are seeking a highly organized and detail-oriented Office Assistant to support our team with daily administrative and operational tasks. The ideal candidate will be a problem-solver with excellent communication skills and the ability to manage multiple tasks effectively. As an Office Assistant, you will play a vital role in maintaining a clean, safe, and well-organized office environment that fosters productivity and comfort for all employees. Your responsibilities will include helping manage office supplies to ensure essential items are always available, restocking office snacks, and assisting with the planning of company events, to name a few. Through your attention to detail and proactive approach, you will help create a welcoming, efficient, and enjoyable workplace culture.
Key Responsibilities
About the Office Assistant position We are seeking a highly organized and detail-oriented Office Assistant to support our team with daily administrative and operational tasks. The ideal candidate will be a problem-solver with excellent communication skills and the ability to manage multiple tasks effectively. As an Office Assistant, you will play a vital role in maintaining a clean, safe, and well-organized office environment that fosters productivity and comfort for all employees. Your responsibilities will include helping manage office supplies to ensure essential items are always available, restocking office snacks, and assisting with the planning of company events, to name a few. Through your attention to detail and proactive approach, you will help create a welcoming, efficient, and enjoyable workplace culture.
Key Responsibilities
- Ensure the office environment is clean, safe, and conducive to productivity.
- Manage office operations, including ordering kitchen and office supplies.
- Be a liaison for building-related issues and oversee maintenance and repair requests for office infrastructure.
- Assist in event planning for company meetings, team outings, and celebrations.
- Help maintain and organize office facilities, supplies, and equipment.
- Handle deliveries, shipping swags, etc.
- Assist with scheduling, calendar management, and coordinating meetings when requested.
- Previous experience in an administrative or office support role preferred.
- Strong organizational and multitasking abilities.
- Excellent written and verbal communication.
- Proficiency in Google Suite and other relevant software.
- Ability to work independently and adapt to a fast-paced, evolving environment.
- Strong attention to detail and problem-solving skills.
- Positive attitude and ability to work collaboratively with a team.
Vacancy posted 4 days ago
Similar jobs that could be interesting for youBased on the Office Assistant in Vienna, VA vacancy
- ...Office Assistant Film and Video Studies is seeking a temporary Office Assistant for the Fall 2026 semester. The ideal applicant is a fast learner and a team player who has experience working in an office and possesses background in higher education. The successful...SuggestedTemporary workWork at officeFlexible hours
- ...We're searching for a diligent Office Assistant to provide administrative support. You’ll be responsible for responding to all complaints and questions in a friendly and timely manner, implementing office standards to streamline our processes, scheduling appointments...SuggestedWork at office
- ...Summary Performs a variety of general office duties required to support the activities of a school to include responding to requests... ...and/or routes calls and visitors to appropriate responses. # Assists other employees in order to accomplish tasks or projects. #...SuggestedWork at office
- ...to be onsite for initial training (1-2 weeks) and then bi‑monthly onsite meetings for a hour. For full description of Business Office Assistant, click here. To apply, please: Review our Frequently Asked Questions Send your resume and letter of interest via BambooHR....SuggestedPart timeWork at officeRemote work
- Aidan Montessori School in Fairfax, Virginia, is looking for a part-time Business Office Assistant, working 15 hours per week. This position is partly remote, requiring onsite training and bi-monthly meetings. The ideal candidate will hold a Bachelor's Degree and have...SuggestedPart timeWork at officeRemote work
- ...Real Estate Administrative Assistant We're searching for a diligent real estate administrative assistant. You'll be responsible for... ...skills Prior experience in the real estate industry or as an office manager Flexible working schedule to accommodate clients on...Work at officeFlexible hoursNight shiftWeekend work
$15.25 - $22.5 per hour
...and satisfying experience. This requires performing bookkeeping, accounting, and other functions required in the store accounting office. May be assigned to be the on-duty floor monitor, customer service clerk, cashier, and/or bagger when appropriate. QUALIFICATIONS....Part timeWork at office$22 per hour
...team is seeking a currently enrolled graduate student to support office operations at our new co-learning space in Fairfax, Virginia.... ...of classrooms, office spaces, and common areas during shifts. Assist in setting up and breaking down events, meetings, classes, etc....Hourly payPart timeWork at officeFlexible hoursShift workNight shiftAfternoon shift$20.91 - $31.5 per hour
...Talent Attraction team, to submit candidates for review via our applicant tracking system.Job Description:ResponsibilitiesThe Office Services Assistant provides general clerical and administrative office support assisting in daily office and operational needs of the...Temporary workWork at officeLocal areaWorldwideWeekend work$22 - $25 per hour
George Mason University is looking for a temporary Office Assistant in the Film and Video Studies department. The role is part-time and offers a hourly wage between $22 and $25, adjusted based on experience. The assistant will manage communications, assist with scheduling...Hourly payTemporary workPart timeWork at office- ...customized business solutions, reception services and professional offices to hundreds of local, national and international businesses.... ...Ensure all appointments get logged on shared calendar. Assist customers with technology (copy, print, scan, fax, accessing the...Work at officeLocal area
- ...Job Description Title: Office Administrator Employment Status: Full-time: ☒ Temporary: ☐ Part-time: ☐ Intern: ☐ Work... ...for visitors, tenants, vendors, and employees, while also assisting with meeting coordination, office organization, supply management...Full timeTemporary workPart timeInternshipWork at officeWork from homeMonday to Friday
- ...focused on delivering results. We are seeking a friendly, proactive Office Administrator to be the welcoming face of our office and ensure... ...who will manage front-desk operations, provide administrative assistance, and help foster a positive workplace environment through...Full timeTemporary workWork at officeImmediate start
- ...Job Description Weare seeking an organized and detail-oriented Office Administrator tojoin our dynamic team. The ideal candidate will oversee dailyadministrative operations and ensure smooth communication betweendepartments. If you thrive in a structured yet dynamic...Work at office
- ...Oncology, a leader in Cancer care, is seeking a Full Time On-Site Office Administrator for our Administrative office in Fairfax,... ...RESPONSIBILITIES: - Manages administrative office operations and assists all office locations as needed. -Oversee daily...Full timeWork at officeRelocation
- Edge Staffing Partners is seeking an Executive Assistant to support the CEO in Northern Virginia. This critical role requires interaction... ...support to senior executives, proficiency in Microsoft Office, and possess exceptional organizational and time-management skills...Work at office
- ..., and peer support. OVERVIEW: Support the Chief Management Officer inthe day-to-day administration of the office and provide task... ...used items, to ensure the office remains fully stocked. Assist with planning and coordinating internal meetings, company events...Full timeWork at office
$20 - $24 per hour
...Position Overview We are seeking an organized, proactive, and energetic Office Administrator to manage daily operations in our Fairfax, VA office. This role is ideal for a detail-oriented professional with a "shining personality" who thrives in a close-knit, small-office...Permanent employmentContract workWork at officeRemote workFlexible hours$18 - $29.74 per hour
...About the Job General Summary of Position The Office Assistant performs a variety of assigned clerical and patient care duties essential to the daily operations of the assigned department. Duties may vary by department and/or site and may include: patient registration...Work at officeFlexible hours- ...Summary: We are seeking a reliable and organized Office Administrator to support daily administrative operations at our... ...is ideal for a local candidate who can commute to the office and assist with coordination, documentation, and general office management...Work at officeLocal area
- ...building a team that shows up, follows through, and keeps getting better. The Opportunity We are seeking an organized, dependable Office Administrator to support the daily operations of our office and leadership team. This role is ideal for someone who enjoys keeping...Work at office
- ...Office Administrator Summary: We are seeking a reliable and organized Office Administrator to support daily administrative operations... ...ideal for a local candidate who can commute to the office and assist with coordination, documentation, and general office management...Work at officeLocal area
- ...matching Dental insurance Health insurance Paid time off Tuition assistance Vision insurance Job description The Senior Construction... ...Excellent verbal, communication, and interpersonal skills; Proficiency with Microsoft Office especially Word and Excel. #J-18808-Ljbffr...Contract workFor contractorsWork at office
- ...Dental Office Assistant - Business Assistant Broadlands Complete Dental is looking for a Business Assistant to join our team. Must be available to work a full time schedule of Monday-Friday from 8:30a-5:30p Why Heartland Dental? Heartland Dental believes that...Daily paidFull timeWork at officeLocal areaMonday to Friday
- ...scheduling theory to develop and maintain the Integrated Master Schedule (IMS) and related documents following Government Auditing Office (GAO) and DCMA standards of best practice Work with cross-functional teams to generate and manage an accurate master schedule to meet...Work at officeLocal area
- ...SharePoint, Milestones Professional, and OnePager Pro to build and track schedules. Export complex schedules into easily understood MS Office and custom program office formats. Engage actively in program reviews, technical meetings, and alignment conferences....Contract workLocal area
$18 per hour
...Position: Administrative Assistant Contract Length: 5-month contract (possible extension) Location: Vienna, VA Work Setup... ...for a highly organized professional who excels in a fast-paced office environment and enjoys supporting leadership operations....Contract workWork at office- ...Pueo Business Solutions LLC in McLean, Virginia seeks an Administrative Support professional to assist the Chief Management Officer and other executives. Responsibilities include managing office supplies, coordinating meetings, and handling expense reports while maintaining...Work at office
$44k - $54k
...set, qualifications, and internal pay equity. As a Restaurant Office Administrator at Cooper’s Hawk, you’ll play a key role in... ...Support Team Members with policy, payroll, and benefits questions Assist with screening applications and processing employment paperwork...Hourly payTemporary workCasual workWork at officeLocal areaFlexible hoursShift workWeekend work- ...and we are the leading local workforce solutions provider in Northern Virginia. Job Description Curzon is seeking an Office Manager / Executive Assistant to become a key member of our team. We’re looking for someone who has never met a process or procedure that can’t be...Temporary workWork at officeLocal area
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Office Assistant. Be the first to apply!

