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

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.

Position Summary Under the general supervision of the Store Manager and District Operations Manager, the Customer Service Representative (CSR) supports daily store operations while upholding the company’s commitment to exceptional customer service. This role is responsible for cashiering, maintaining store presentation, ensuring food and beverage quality, and fostering a safe and welcoming environment for all customers.

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.

C2 Education seeks an AP Science/Math Tutor to deliver high-quality, part-time instruction aligned with its curriculum and educational philosophy at the Diamond Bar, CA location. The tutor fosters a positive learning environment, supports student academic growth, and conducts in-person sessions after school hours and on Saturdays.

Life doesn’t always follow a fixed schedule. That’s why we created the Security Officer – Part Time Enhanced position: a flexible, dependable option for individuals looking to supplement their income, gain hands-on experience, or work toward a full-time career with the industry leader.

Registered Nurse for Cedars‑Sinai’s Pediatric Intensive Care Unit (PICU) will deliver comprehensive, evidence‑based care to infants, children, and adolescents recovering from major surgeries or serious illnesses. Working a 12‑hour rotating shift—nights or days/nights—this role requires applying the nursing process, documenting care, administering medications and therapies, and performing procedures such as skin tests, immunizations, phlebotomy, and peripheral IV access.

At CVS Health, we are focused on transforming health care for our customers and making our company a great place to work. We help people navigate the health care system – and their personal health care – by improving access, lowering costs and being a trusted partner for every meaningful moment of health.

As a Security Officer Part Time Identity Screening Driver in Diamond Bar, CA , you will serve and safeguard clients in a range of industries such as Residential, and more. Join a leading team where flexibility meets opportunity.

Allied Universal seeks a Security Officer Enhanced Entry Verification in Diamond Bar, CA, to provide reliable security and access-control services at a residential site. Day-to-day duties include greeting and assisting residents, guests, vendors, and visitors; verifying authorization at entry points; documenting visitor and vendor information; monitoring vehicle and pedestrian activity; conducting patrols of common areas, entry points, and perimeters; and responding calmly to incidents while fol

As a Security Officer Part Time Bilingual Access Control in Diamond Bar, CA , you will serve and safeguard clients in a range of industries such as Residential, and more. Join a leading team where flexibility meets opportunity.

Sylvan Learning Center - Dimaond Bar, Chino & Claremont P/T Teaching-Beginning Reading- Sylvan Learning Center--Vacaville The Sylvan Learning Center in Vacaville is looking for fun, dedicated teachers to inspire and help our students achieve academic excellence. We are currently accepting applications for BEGINNING READING (pre-K-2nd) teachers.

As a Security Officer Screening Driver in Diamond Bar, CA , you will serve and safeguard clients in a range of industries such as Residential, and more. Join a leading team where flexibility meets opportunity.

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.

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.

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.

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.

You got game? You got spring in your step? You want the best job in the world! And schedules that work with you, not against you?

Position Summary Under the general supervision of the Store Manager and District Operations Manager, the Customer Service Representative (CSR) supports daily store operations while upholding the company’s commitment to exceptional customer service. This role is responsible for cashiering, maintaining store presentation, ensuring food and beverage quality, and fostering a safe and welcoming environment for all customers.

Chess Wizards is seeking enthusiastic, reliable Chess Instructors for its after-school enrichment program in Diamond Bar, CA. Instructors lead fun, interactive chess classes for 10–15 elementary students, using a structured curriculum to teach fundamentals, promote good sportsmanship, and encourage problem-solving. The role involves traveling to various local school sites on weekday afternoons (2:00 PM–5:00 PM), with onboarding and training during the summer and active teaching assignments comme

The Senior Recreation Leader, under general supervision, must have the ability to follow oral and written instruction, ability to establish and maintain effective working relationships with children, teens and/or adults, and the general public.Under the general supervision of one of the Recreation Supervisors, the Senior Recreation Leader will act as an on-site lead employee giving direction to Recreation Leaders and/or Volunteers; supervise frontline staff in sports activities, arts and crafts,