668 office assistant jobs at 357 companies in Castle Pines, CO
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Office Assistant
Elizabeth, Colorado, United States
$16-$19/hrOnsiteFull Time
Centennial Mental Health Center: Nonprofit behavioral health provider serving rural individuals, families, and communities across northeastern Colorado.
2+ YOEHigh school diploma or GED, 2+ years of public office experience preferred, Microsoft Office proficiency, professional communication skills, and ability to manage multiple tasks. QMAP certification required within 90 days.
Microsoft Word, Microsoft Excel, Microsoft Outlook, Electronic Health Record (EHR)
2+ YOEProvide administrative support to senior leaders, manage calendars, travel and expenses, prepare presentations and reports, coordinate meetings, maintain office operations, and use Microsoft Office 365.
Microsoft Office 365, Microsoft Outlook, Microsoft Teams, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
St. Mary Magdalene Catholic Church: Catholic nonprofit parish serving more than 600 families in west Denver through worship, formation, community, and evangelization.
Working knowledge of English and Spanish, Windows, and Microsoft Office 365; practicing Catholic in good standing; strong communication, confidentiality, judgment, collaboration, and administrative skills.
The Classical Academy: Nonprofit public K–12 charter school serving Colorado Springs students through classical education.
High school diploma or GED required; general office experience in an educational setting preferred. Requires Microsoft Office proficiency, 50 WPM typing, organization, confidentiality, and effective English communication.
iVisions, Bound, Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, PERA Plus 401(k), Empower, OneMedical, Delta Dental, EyeMed, Orriant
Aurora Housing Authority: Committed to providing safe, decent, and affordable housing to our community
Knowledge of HUD regulations, strong customer service, computer, filing, written and verbal communication skills; up to three months of on-the-job training provided.
Harvest Moon Baking Company: A bakery and food manufacturing producing handmade artisan baked goods and supplying restaurants and retail partners.
2+ YOEPerforms clerical and bookkeeping tasks, receptionist duties, invoice processing in Flexibake, MS Office proficiency, high school diploma, minimum 2 years office experience, ability to lift up to 20 lbs.
Flexibake, Microsoft Word, Microsoft Excel, Microsoft Outlook, Microsoft PowerPoint
Gilpin County: Colorado county government providing public safety, infrastructure, health, and human services.
2+ YOEHigh school diploma, 2+ years clerical experience, customer service experience, proficiency with Microsoft Word/Excel, basic accounting/bookkeeping, valid Colorado driver’s license, FEMA ICS 100 and 700 within 6 months.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint
Garden of the Gods Resort and Club: Private luxury resort and country club serving hotel guests and members with lodging, golf, wellness, dining, and recreation.
2+ YOE2+ MgmtRequires 2 years of hotel front-office supervisory experience, rooms-control knowledge, English communication, valid driver's license, and Microsoft Office proficiency; a related bachelor's degree and OPERA knowledge are preferred.
Microsoft Word, Microsoft Outlook, Microsoft Excel, email, OPERA Property Management System, HotSOS, OTA, SynXis
Sage Hospitality Group: Hospitality management, investment, and development firm.
2+ YOEHigh school diploma, 2+ years supervisory front desk experience (or 4+ years front office), cash handling and computer skills, fluent English, strong customer service and organizational skills.
World Challenge: Christian nonprofit ministry caring for orphans and widows through local partners worldwide.
2+ YOEHigh school diploma or equivalent, 2 years of relevant experience, strong interpersonal, organizational, administrative, communication, and customer service skills, and proficiency with Microsoft Office, databases, internet, and office equipment.
Microsoft Office, Microsoft Excel, Microsoft PowerPoint, Microsoft Teams
Envida: Colorado nonprofit providing accessible transportation and in-home care to older adults, people with disabilities, and low-income individuals.
1+ YOERequires 1 year of administrative, operational home care, or HCBS experience with computer skills. Strong organization, communication, analytical, compliance, and scheduling abilities required; CPR preferred.
Electronic Visit Verification (EVV), Sandata, Microsoft Office Suite
Community College of Denver: Public Colorado community college serving Denver-area students with degree, certificate, transfer, and workforce training programs.
Basic computer skills, communication and organizational abilities, customer service, cash handling, basic math, problem solving, confidentiality, and willingness to learn; high school diploma or GED preferred.
Sciolex Corporation: Service-disabled-veteran-owned U.S. government contractor providing systems engineering, administrative, and operational support to civilian and defense agencies.
0.5+ YOEHigh school/GED, basic medical terminology, 6+ months customer service, ability to type 50 WPM, basic computer skills, English proficiency, ability to obtain Public Trust clearance, U.S. citizenship required.
Microsoft Outlook, Microsoft Teams, Microsoft Word, Microsoft Excel
Atlanta or New York City or Woodbridge or Boston or Chicago or Dallas or Delaware or Denver or Garden City or Cayman Islands or Greenwich or Houston or Los Angeles or Miami or Naples or Nevada or Palm Beach County or San Diego or San Francisco or Seattle or Stuart or Washington
HybridFull Time
Bessemer Investors: Privately owned family office providing investment management, wealth planning, and family-office services to high-net-worth individuals and families.
2+ YOEBachelor's degree, 2+ years office management or executive assistant experience; strong Microsoft Office skills, calendar and travel management, vendor and facilities liaison, event coordination, confidentiality and communication skills.
Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook
Sr. Administrative Assistant / Office Manager, Office of the CEO
Boulder, Colorado, United States
$80k-$95k/yrOnsiteFull Time
Alta Resource Technologies: Mining technology using engineered proteins to separate rare earths and other critical minerals from complex feedstocks.
3+ YOEAssociate's or bachelor's degree or equivalent experience; 3–5 years of administrative, executive support, or office operations experience; complex calendar management, discretion, communication, organization, and Google Workspace or Microsoft 365 proficiency.
Google Workspace, Microsoft 365, Jira, Asana, Notion, ATS, HRIS
Aspen Dental: National network of independently owned and operated dental practices.
High school diploma or equivalent required; college degree preferred. Requires strong communication, interpersonal, analytical, organizational, and detail-oriented skills.
Cherry Creek Retirement Village: Provider of independent and assisted senior living communities.
High school diploma or equivalent required; associate degree and 2 years of accounting or bookkeeping experience preferred. Accounts payable software experience preferred.
Havenly: Havenly is a private online interior-design service and home-furnishings marketplace serving homeowners.
3+ YOERequires 3+ years supporting a senior executive, preferably in a high-growth, consumer-facing, or startup environment, with exceptional communication, organization, discretion, and comfort using AI tools.
Regis University: Jesuit Catholic nonprofit university in Denver serving undergraduate, graduate, and professional students through on-campus and online programs.
Current Peer Minister hired and onboarded for the 2026–2027 academic year; willingness to support Catholic and non-Catholic programming, communicate effectively, work independently, and use office software.
Microsoft Office Suite, Microsoft Office 365, Google Suite, Zoom, Microsoft Teams