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Administrative Assistant

Job in Modesto, Stanislaus County, California, 95397, USA
Listing for: Robert Half
Seasonal/Temporary position
Listed on 2026-06-03
Job specializations:
  • Administrative/Clerical
    Office Administrator/ Coordinator, Clerical, Executive Admin/ Personal Assistant
Job Description & How to Apply Below
Description We are looking for a detail-oriented Administrative Assistant to support construction contract operations in Modesto, California. This contract-to-permanent opportunity is ideal for someone who can manage documentation, coordinate billing activities, and keep project records organized in a fast-paced contractor environment. The role will work closely with project and subcontractor documentation while helping maintain efficient day-to-day office support.

Responsibilities:

- Draft and distribute clear written communications, ensuring accuracy and a well-presented format in all correspondence.

- Examine agency and project agreements for compliance and assemble the documentation needed to support contract administration activities.

- Create and manage subcontract packages, master service agreements, work orders, and purchase orders for active construction projects.

- Process change-related documentation, lien releases, preliminary notices, and other subcontractor records in accordance with project requirements.

- Coordinate monthly invoicing and subcontractor payment processing to meet established accounting and month-end timelines.

- Track subcontractor bonds, insurance certificates, and business licenses, maintaining complete and current compliance files.

- Prepare project startup documentation along with recurring and closeout reports required for public sector work, including federal and state projects.

- Provide general administrative support by handling mail and shipments, maintaining office supplies, and assisting with additional construction administration tasks as needed. Requirements

We are looking for a detail-oriented Administrative Assistant to support construction contract operations in Modesto, California. This contract-to-permanent opportunity is ideal for someone who can manage documentation, coordinate billing activities, and keep project records organized in a fast-paced contractor environment. The role will work closely with project and subcontractor documentation while helping maintain efficient day-to-day office support.

Responsibilities:

- Draft and distribute clear written communications, ensuring accuracy and a well-presented format in all correspondence.

- Examine agency and project agreements for compliance and assemble the documentation needed to support contract administration activities.

- Create and manage subcontract packages, master service agreements, work orders, and purchase orders for active construction projects.

- Process change-related documentation, lien releases, preliminary notices, and other subcontractor records in accordance with project requirements.

- Coordinate monthly invoicing and subcontractor payment processing to meet established accounting and month-end timelines.

- Track subcontractor bonds, insurance certificates, and business licenses, maintaining complete and current compliance files.

- Prepare project startup documentation along with recurring and closeout reports required for public sector work, including federal and state projects.

- Provide general administrative support by handling mail and shipments, maintaining office supplies, and assisting with additional construction administration tasks as needed.

Talent Match®

Robert Half is the world's first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles.

Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app ()  and get 1-tap apply, notifications of AI-matched jobs, and much more.

All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit  for more information.

© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking "Apply Now," you're agreeing to Robert Half's Terms of Use ()  and Privacy Notice () .
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