Executive Assistant II — Space & Defense Exec Support

sierraspace; Centennial (CO); On-site; USD 53,000 - 73,000; Full time

Job summary

Sierra Space seeks an Executive Assistant II to provide high‑level administrative support to senior executives, manage calendars, and coordinate travel domestically and internationally. The role includes event planning, preparing briefs, and handling correspondence with a focus on accuracy and discretion.

You will coordinate VIP visits, meetings, and travel while maintaining compliant records and assisting with meetings minutes and reports.

Qualifications

• 2–4 years of EA experience in a professional services organization or aerospace.
• Proficient in Microsoft Office, including Outlook, Excel, Word, PowerPoint, and Teams.
• Previous experience with travel management software such as Concur or Egencia.
• Ability to multitask, work under pressure, and think critically while retaining accuracy.
• Strong interpersonal skills, creativity, thoughtful business judgment, and professional maturity.
• High energy level, strong communication skills, intellectual curiosity.
• Ability to move tasks along and follow up is critical.
• Desire to collaborate with colleagues throughout the company.
• Motivated, flexible, team-player spirit.
• Ability to handle confidential information with discretion.
• Proactive and able to work independently with minimal supervision.
• The ability to obtain and maintain a Secret U.S. Security Clearance is required.

Responsibilities

• Manage and maintain executives' calendars, scheduling meetings and events.
• Coordinate domestic and international travel arrangements.
• Prepare and edit correspondence, presentations, briefs, and minutes.
• Assist with reports, meeting agendas, and action items while ensuring compliance.
• Coordinate VIP visitors, customer meetings, and events.
• Maintain organized files and support office operations.

Skills

Executive support

Microsoft Office

Travel management

Multitasking

Interpersonal skills

Communication skills

Discretion with confidential info

Independent work

Security clearance readiness

Team collaboration

Tools

Concur

Egencia

Job description

Sierra Space seeks an Executive Assistant II to provide high‑level administrative support to senior executives, manage calendars, and coordinate travel domestically and internationally. The role includes event planning, preparing briefs, and handling correspondence with a focus on accuracy and discretion.

You will coordinate VIP visits, meetings, and travel while maintaining compliant records and assisting with meetings minutes and reports.