Office Administrator

Company: CesiumAstro
Location: El Segundo
Posted on: February 18, 2026

Job Description:

Job Description Job Description Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State. At CesiumAstro , we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team. We are looking to add an Office Administrator to our team. If you enjoy working in a startup environment, and have talent and a good work ethic, we would like to hear from you. We are looking for someone to be the face of our office to greet employees, visitors, and vendors. You will be the office go-to person and manage all office operations to help ensure organizational effectiveness, efficiency, and safety. You should be experienced in handling a wide range of administrative and office support related tasks and will be able to work independently with little or no supervision. You must be well organized, flexible and enjoy the administrative challenges of supporting an office of diverse people. JOB DUTIES AND RESPONSIBILITIES Manage various office operations and day-to-day office activities throughout the office. Act as company liaison to building management. Coordinate contractor visits, facility access, and vendor selection. Relay building information to the team for daily activities and project planning. Ensure that the company follows building rules and regulations at all times. Provide general administrative support and assist with ad hoc projects. Uphold office standards, set up conference rooms, light cleaning and organizing. Assist recruiting with various interview coordination activities (hosting onsite candidates). Work closely with outside vendors and members across our team to assist with administrative tasks (shipping, etc.) and various special ordering requests (business card ordering, ad hoc gifts, etc.). Act as an on-site representative for company functions located in our El Segundo, California headquarters such as HR, Finance, Facilities Management and Environmental Health & Safety, Security, etc. Coordinate contractors and service providers for work required in the facility ensuring projects are completed to requirements and timely. Coordinate large deliveries taking into account building regulations, staffing, and delivery capabilities. Greet visitors and support with visitor-related logistics. Audit facility state of health and plan, budget, and coordinate repairs, updates, and improvements. Set up conference rooms for visitors and desks for new hires. Facilitate onsite catering for lunches and for special events such as board meetings or birthdays. Organize office operations and procedures. Order, organize, and maintain inventory of office supplies and consumables. As needed, manage the office intranet page to provide up to date policies, schedules, and other information to employees. In addition, manage other sources of information such as regular email announcements and the office bulletin board. Manage budgets, purchase orders, and expense reports for office activities and projects. Participate in company events and align on our strategic initiatives. Assist the team with schedule coordination and travel planning. Assist all team members with purchase order submission. JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS 2 years of office administration and/or receptionist experience. Associate's degree required, bachelor's degree preferred. Outstanding organization skills, with solid attention to detail and critical thinking. Strong Microsoft Office skills (Outlook, Excel, PowerPoint, Word). Strong telephone/communication and interpersonal skills. A positive "can do" attitude, must be flexible and accommodating with a strong customer orientation. Self-starter, independent. The ability to work as part of a team and to build strong working relationships. PREFERRED EXPERIENCE Startup/tech company experience. Event planning and execution for larger groups. Knowledge of AS9100/ISO9001 quality management system requirements. CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans. CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law. Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees. We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Keywords: CesiumAstro, Yucaipa , Office Administrator, Administration, Clerical , El Segundo, California