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Administrative Assistant

Carlsbad, California - Posted on August 21, 2026
Published By Kamice Kellum

Trillium Construction, repeatedly recognized as a “National Best and Brightest Company” to work for and ranked in the top 1% of staffing firms in the United States, is seeking an Administrative Assistant to provide administrative support and assist in recruiting efforts in their Carlsbad, CA based construction and skilled trades office.

We’re looking for a positive, dependable, and organized Part-Time Administrative Assistant to join our team! If you’re someone who enjoys variety in your day, takes pride in keeping an office running smoothly, and thrives in a fast-paced environment where no two days are exactly alike, we’d love to meet you.

This is a great opportunity for someone who is personable, detail-oriented, and comfortable juggling multiple responsibilities while maintaining a friendly, professional attitude.

Schedule & Pay
•    Part-time (approximately 25 hours per week)
•    Monday–Friday
•    Approximately 5 hours per day
•    In-office position
•    Pay rate is $21-22/hour

What You’ll Do
As our Administrative Assistant, you’ll help keep our office organized and ensure daily operations run smoothly by:
•    Greeting clients and visitors with a friendly, welcoming attitude.
•    Answering and directing incoming phone calls.
•    Managing office email and responding to general inquiries.
•    Scheduling appointments and maintaining calendars.
•    Preparing letters, emails, and other business correspondence.
•    Scanning, copying, and organizing documents.
•    Ordering office supplies and keeping inventory stocked.
•    Keeping the office organized and operating efficiently.
•    Coordinating incoming and outgoing mail and package deliveries.
•    Helping celebrate employee birthdays by tracking special dates, sending birthday greetings, and organizing small celebrations.
•    Assisting with company compliance requirements and workplace safety standards.
•    Helping onboard new employees by preparing paperwork and coordinating administrative tasks.
•    Coordinating meeting and training logistics, including scheduling, preparing materials, and setting up meeting spaces.
•    Assisting with special projects and jumping in wherever help is needed.

We’re Looking For Someone Who Is
•    Friendly, approachable, and enjoys working with people.
•    Highly organized with excellent attention to detail.
•    Proficient with Microsoft Office (Word, Excel, Outlook)
•    Flexible and able to adjust as priorities change.
•    A self-starter who takes initiative and follows through.
•    Comfortable multitasking while staying organized.
•    Professional, dependable, and trustworthy. 

If you’re interested in joining the Trillium team, please apply today!
 
Qualifications:
- Microsoft Office experience (Outlook, Word, Excel, etc)
- Bilingual (English and Spanish preferred)
- Recruiting and/or administration experience preferred
- High School Diploma or GED
  
#staffingcareers


Trillium Construction Services has been recruiting and hiring construction and skilled trades talent for over 30 years. Trillium is an Equal Opportunity Employer.

By applying to this job, I agree to receive electronic communications including SMS text and email regarding future opportunities, referral bonus incentives, and other promotions from Trillium. You may opt out at any time from future communications by responding STOP to any electronic communication. You may view our full privacy policy at https://trilliumstaffing.com/jobs/privacy/.

Trillium offers a comprehensive benefit package that includes the ability to participate in health insurance and retirement plans, paid holidays, state-required leave, and paid time off. Trillium’s offerings are dependent on employee status and program eligibility.

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