Part-time Office Assistant

Part-Time Office Assistant - Boulder | April 2026

Location: Downtown Boulder Office

Commitment: 4 - 5 days per week, 25-30 hours/week during standard business hours (9am-5pm)

Mosaic Architects is a full-service architecture and interior design firm specializing in high-end residential projects throughout Colorado and California. We have offices in Boulder, San Francisco, and Santa Barbara.

We are looking to bring a motivated professional to our Boulder team who thrives in a fast-paced office environment and has strong organizational skills. This is a role with a mix of basic office management responsibilities, admin, and marketing support. This person will gain exposure to the day-to-day operations of a busy office, supporting a team of ten architects and designers.

Responsibilities

· Greet visitors and clients, answer and direct phone calls from main line

· Process and route packages and deliveries

· Manage inventory of material samples, office supplies, and groceries

· Coordinate and schedule appointments and meetings

· Perform administrative tasks including: sorting digital and physical files, transcribing meeting notes, corresponding with industry reps, supporting California offices with admin needs

· Manage marketing tasks such as:

• Social media posts, copywriting digital newsletters, upkeep of Wix web design, submitting award applications
• Assisting with photoshoots and project photography

· Run local errands related to office or project needs (having a vehicle is required)

· Personal assistant to CEO

Qualifications

· High school diploma or general education degree (GED) required; Associate's or Bachelor’s degree preferred

· Minimum 5 years of office experience in an administrative and operational role

· Excellent organizational skills, ability to prioritize, and comfortable working independently

· Exceptional oral and written communication skills, strong attention to detail

· Required: Proficient computer skills and ability to operate general office equipment and software programs including: Microsoft Suite (Excel, Word), Adobe Suite (Photoshop, InDesign), Canva, Instagram

· Preferred: Wix, SEO optimization, StudioDesigner

*Please Note*:

• This is a part-time position (25-30 hours/week) and does not include health insurance or additional benefits. Compensation is hourly, commensurate with experience.
• This role is ideal for someone who values consistency, a predictable schedule, and the satisfaction of keeping a busy creative office running smoothly, and does not include a path to other positions within the firm.

To apply, email resume to: jobs@mosaicarchitects.com with subject line: “Mosaic Architects – Boulder – Office Assistant 2026”. Please include a brief note on why this type of role appeals to you. **No phone calls or walk-ins please. We’d like to fill this role by mid-May.

Job Type: Part-time

Pay: $20.00 - $30.00 per hour

Experience:

• Clerical: 5 years (Preferred)

Work Location: In person