Part-time Jobs in Diamond Bar, California, United States

We’re seeking an energetic Imagination & Sports Play Coach to lead and inspire young children across our award‑winning programs—Soccer Stars, Amazing Athletes, and Karate Zoo. In this part‑time role, you’ll travel to local schools and community sites in Fullerton, Brea, Diamond Bar, and Walnut, delivering engaging, movement‑based lessons that blend storytelling, music, and themed activities. You’ll support lead coaches, manage class transitions, and create a safe, inclusive environment that nurt

Retail Store Team at See's Candies delivers delightful customer experiences in its Diamond Bar shop. The Sales Associate greets shoppers, provides product knowledge, handles cash transactions, and maintains a clean, merchandised environment while contributing to sales goals.

Community Safety Team leads driver safety initiatives and policy development. The Driving Safety Instructor conducts safety evaluations, remediation training, and tracks incident trends to improve fleet safety.

Sylvan Learning - Southern CA is seeking a Part-time Math Instructor to deliver supplemental math education at its Diamond Bar, CA center. The instructor will work off-site with young adult students, teaching through upper-level material such as GED Math, Algebra 1, and Geometry, with the goal of college and career readiness.

Allied Universal® is hiring a Security Professional Flex Officer to serve and safeguard clients across industries such as Healthcare, Education, and Finance. Based in Diamond Bar, CA, the role uses an exclusive shift-pickup platform to view and claim open shifts across morning, afternoon, evening, and overnight schedules, seven days a week.

Total Vision LLC’s Diamond Bar practice seeks an Optometrist to deliver full‑scope eye care, including exams, prescription, and pre‑ and post‑operative support. The role involves patient counseling, contact lens fitting, and ocular disease management in a modern office setting.

YMCA of Orange County, a nonprofit dedicated to youth development, seeks part-time staff to mentor middle school students across three Pomona Valley schools. The role guides ages 11-14 through STEM, arts and homework activities, provides a welcoming environment, and upholds core values while driving between sites as needed.

Youth Athletes United, a community-focused youth sports organization, delivers multi-sport enrichment programs that teach fundamentals and life skills through fun, non‑competitive classes. As a Youth Sports Coach you will lead 5‑25 classes per week using ready‑made curricula, provide individual attention, and foster a positive, stress‑free environment for children.

Retail Pharmacy team at CVS Health ensures safe, accurate prescription fulfillment and compassionate patient care. Technicians support pharmacy operations, handle inventory, provide immunizations, and deliver exceptional service across drive‑thru and in‑store counters.

Albertsons is hiring a Deli Clerk for its Diamond Bar, CA store to prepare and serve deli meats, cheeses, salads, sandwiches, and hot case items while delivering exceptional customer service. Day-to-day work involves using meat and cheese slicers, food scales, fryers, ovens, and cash registers to prepare food and guide guests through the deli experience.

Facility Attendant on the Parks & Recreation team at City of Diamond Bar. Supports facility operations by performing janitorial tasks, setting up and tearing down event equipment, and maintaining safety and cleanliness. Works evenings, weekends, and holidays at Diamond Bar Center and local parks, ensuring a welcoming environment for community events.

Domino's Pizza is hiring a Customer Service Rep at the Diamond Bar, California store to make, bake, or take pizzas during hungry hours of the day and night. The role involves operating equipment, preparing product, receiving and processing telephone orders, stocking ingredients, taking inventory, and cleaning the facility.

Chess Wizards After-School Enrichment Program teaches elementary students chess fundamentals and sportsmanship. Instructors lead interactive 1.5‑hour classes for 10‑15 kids, manage classroom dynamics, and travel to local schools in Diamond Bar, CA. This part‑time, on‑site role offers flexible scheduling of 1‑5 classes per week with hourly pay.

Retail Store Team at Sherwin-Williams. Associates deliver product expertise and personalized solutions to wholesale and retail customers, resolve concerns, and maintain store visual standards. Work at the Diamond Bar location, on-site, part‑time schedule.

Domino's Pizza in Diamond Bar, California is hiring a part-time Delivery Driver to deliver orders and support in-store operations. Drivers deliver food to customers, navigate routes using maps, and assist with food preparation, cleaning, stocking, and order processing.

Facilities Services team at Servicon Systems ensures safe, clean environments for government and municipal facilities. The Cleaner maintains and sanitizes assigned areas, empties waste, vacuums, dust-mops, and wipes surfaces while following company and client standards.

The Sylvan Teacher at Sylvan Learning - Southern CA in Diamond Bar, CA creates a positive personal learning experience for students using Sylvan program materials. Day-to-day duties include preparing instructional sessions, instructing and motivating students, evaluating and recording progress, managing tokens and learning logs, and communicating student needs to Center staff.

Customer Service team at Citigroup branch in Diamond Bar, California. The Teller provides front-line client service, processes cash transactions, and identifies product opportunities while ensuring compliance and risk controls.

Rebel Convenience Stores team seeks a friendly Cashier to deliver fast, courteous service and keep the store clean and stocked. The role involves greeting customers, operating the POS system, restocking merchandise, and maintaining food service equipment.

Woodcraft Rangers Early Learning program team creates safe, inclusive after‑school experiences for youth in Pomona. The Program Leader plans and leads age‑appropriate activities, monitors attendance, and builds relationships with students, families, and staff while supporting the Site Coordinator.