CesiumAstro
Direct Lever career site

Office Administrator I

Location
Westminster, CO
Listed
Today

About the role

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.

Job Duties and Responsibilities

  • Provide daily administrative support to assigned departments and business leaders, including correspondence, reports, presentations, and meeting materials.
  • Coordinate calendars, meetings, conference rooms, travel arrangements, and other routine scheduling activities.
  • Assist with data entry, expense reporting, recordkeeping, and administrative tasks in accordance with established procedures.
  • Support daily office operations, including supply management, mail distribution, shipping and receiving, and general office coordination.
  • Prepare meeting spaces, coordinate visitor logistics, and maintain common office areas to support business activities.
  • Assist with facility-related requests, employee onboarding logistics, and routine office services in coordination with appropriate personnel.
  • Maintain organized business records, administrative files, correspondence, and supporting documentation in accordance with company procedures.
  • Prepare and update administrative templates, reports, operational records, and routine business documentation.
  • Handle sensitive business information in accordance with established confidentiality and recordkeeping requirements.
  • Respond to routine inquiries from employees, vendors, and external visitors while maintaining professional communication.
  • Coordinate assigned administrative activities supporting departmental projects, operational initiatives, and business stakeholders.
  • Identify routine workflow issues and support approved improvements to administrative procedures, office processes, and documentation practices.

Job Requirements and Minimum Qualifications

  • Bachelor's degree in business administration, communications, office administration, or a related field with 0-2 years of related experience in administrative support, executive support, office administration, customer service, business operations, or a related field.
  • Basic knowledge of administrative support, office operations, document preparation, scheduling, and business communication practices.
  • Foundational understanding of administrative procedures, office workflows, records management, and documentation requirements.
  • Familiarity with Microsoft Office applications, standard business productivity tools, and office equipment.
  • Understanding of administrative coordination, task prioritization, scheduling requirements, and routine office support activities.
  • Basic knowledge of business communication, professional interactions, confidentiality requirements, and sensitive information handling practices.
  • Familiarity with document accuracy, recordkeeping, organizational procedures, and continuous improvement practices supporting efficient office operations.
  • Document management and file sharing platforms, e.g. SharePoint, OneDrive, or equivalent applications.
  • Scheduling, travel, and expense management systems, e.g. Concur, Navan, Outlook Calendar, or equivalent applications.

Additional information

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.

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.

Read the original posting

From CesiumAstro's careers page, first listed on Rolev.ai on November 11, 2026. Rolev.ai is not the employer.

How Rolev.ai helps with this application

Rolev.ai is a job search and application tool for US job seekers. For this Office Administrator I role at CesiumAstro, it shows how your resume fits, tailors your resume to the posting, and prepares the application for you to review.

  • See how you fit

    Openings from employer career sites are ranked against your whole resume—and searchable inside Claude, ChatGPT, and Cursor via Rolev.ai MCP.

  • Tailor without inventing

    Every change to your resume is checked against your original. New experience goes in only with your yes—zero fabricated claims.

  • Draft the full kit

    Tailored and Full Match resumes, role-specific cover letters, and answers to employer screening questions are prepared in seconds.

  • 1-Click Extension Autofill

    The Chrome extension fills the employer's Greenhouse, Workday, Lever, or Ashby form in 1 click. You review it and press Submit.

Common questions

Where is the Office Administrator I job at CesiumAstro located?

This Office Administrator I position at CesiumAstro is located in Westminster, CO. Always check CesiumAstro's application page for specific state eligibility or relocation policies.

How do I apply for the Office Administrator I position at CesiumAstro?

This listing links directly to CesiumAstro's Lever application page. You can apply directly on CesiumAstro's site, or use Rolev.ai to check your resume fit, generate a zero-hallucination tailored resume and cover letter for this posting, and autofill the Lever application form in 1 click with the Rolev.ai Chrome extension. You always review the form and press Submit yourself.