We are looking for an organized and proactive Executive Assistant to provide high-level support to senior leadership in Ontario, California. This Long-term Contract position is best suited for someone who can manage shifting priorities, maintain smooth daily operations, and contribute effectively within a close-knit office environment. In addition to executive support, this role includes light office coordination tasks that help keep the workplace running efficiently. Responsibilities: • Manage complex executive calendars, coordinate appointments, and ensure leadership schedules are organized and up to date. • Arrange domestic and international travel, including itineraries, transportation, lodging, and any related scheduling details. • Prepare and reconcile expense reports while maintaining accurate records and timely submissions. • Support executive meetings by organizing logistics, confirming attendance, and helping materials are ready in advance. • Serve as a dependable point of coordination for day-to-day executive operations in a small team setting. • Handle incoming mail distribution and assist with general administrative tasks that support office workflow. • Monitor and replenish shared office supplies such as coffee and other breakroom essentials. • Help maintain a welcoming and orderly office environment, including light coordination tasks such as caring for office plants. • Work onsite initially and adapt to a hybrid schedule if business needs allow after the first month.

• Demonstrated experience supporting senior executives in an administrative or executive assistant capacity. • Strong calendar management skills with the ability to handle multiple priorities and schedule changes. • Proven ability to coordinate travel arrangements and manage related logistics with accuracy. • Experience preparing expense reports and maintaining organized administrative documentation. • Excellent communication and interpersonal skills for working with leadership and internal teams. • Ability to operate independently while also contributing effectively within a small team. • Proficiency with standard business software and office productivity tools. • Strong attention to detail and a dependable, service-oriented approach to daily support tasks.

<h3 class="rh-display-3--rich-text">TalentMatch®</h3> 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. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> 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 <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> 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 <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.

Ontario, CA
onsite
Temporary / Contract
33.25 - 38.5 USD / Hourly
We are looking for an organized and proactive Executive Assistant to provide high-level support to senior leadership in Ontario, California. This Long-term Contract position is best suited for someone who can manage shifting priorities, maintain smooth daily operations, and contribute effectively within a close-knit office environment. In addition to executive support, this role includes light office coordination tasks that help keep the workplace running efficiently. Responsibilities: • Manage complex executive calendars, coordinate appointments, and ensure leadership schedules are organized and up to date. • Arrange domestic and international travel, including itineraries, transportation, lodging, and any related scheduling details. • Prepare and reconcile expense reports while maintaining accurate records and timely submissions. • Support executive meetings by organizing logistics, confirming attendance, and helping materials are ready in advance. • Serve as a dependable point of coordination for day-to-day executive operations in a small team setting. • Handle incoming mail distribution and assist with general administrative tasks that support office workflow. • Monitor and replenish shared office supplies such as coffee and other breakroom essentials. • Help maintain a welcoming and orderly office environment, including light coordination tasks such as caring for office plants. • Work onsite initially and adapt to a hybrid schedule if business needs allow after the first month.
2026-07-06T00:00:00Z