Tech Jobs in Ontario, CA
172,845 open positions · Updated daily
Ontario, CA sits in the heart of Orange County, a region that blends the innovation of the Greater Los Angeles tech corridor with a more affordable lifestyle. The city’s proximity to major hubs like Irvine, Santa Ana, and the bustling downtown Los Angeles area means tech talent can tap into a diverse ecosystem of startups, established firms, and research institutions while enjoying a lower cost of living. The presence of the Ontario International Airport further fuels a strong logistics technology sector, attracting companies that need real‑time data solutions for freight and supply chain operations.
Tech companies in Ontario span several verticals. Software and web development firms such as Adobe’s regional office and Oracle’s Irvine branch thrive here, alongside biotech innovators like Genentech’s Orange County lab and Life Sciences Park startups. The city also hosts hardware manufacturers, including Intel’s manufacturing plant in nearby Santa Ana, and telecommunications leaders like T‑Mobile’s Orange County headquarters. With the University of California, Irvine nearby, research collaborations and talent pipelines flow directly into local tech teams.
Ontario’s median rent hovers around $2,500 a month, significantly below the $3,500 average in central Los Angeles, but salaries for tech roles have been rising to match the talent demand. Salary transparency is therefore essential for candidates to negotiate competitively and for employers to attract the best talent. Knowing the exact pay range for roles such as software engineers, data scientists, or product managers helps job seekers evaluate whether a position aligns with their financial goals and lifestyle needs.
Temporary Seasonal Sp Unit Staff RN Part Time Days Hosp - ICU
Company: Kaiser Permanente
Location: Ontario, California
Posted Aug 05, 2025
Pharmacist Critical Care II
Company: Martin Luther King, Jr. Community Hospital
Location: Los Angeles, CA
Posted Aug 05, 2025
Assist with development of clinical programs, clinical monitoring, medication reconciliation, formulary management, cost containment programs, and improved…
PICU Nursing Professional Development Specialist
Company: Stanford Children's Hospital
Location: Palo Alto, CA
Posted Aug 05, 2025
This occurs through the facilitation of the educational process through assessment, development, planning, implementation and evaluation of clinical competency…
Studio Security Guard (Swing, Graveyard, and Weekends)
Company: Warner Bros. Discovery
Location: Burbank, CA
Posted Aug 05, 2025
Must have a valid California Driver’s License and a record of safe driving with at least 6 months of driving history. Performs other related duties as assigned.
HVAC Design Engineer - New Construction Specialist
Company: Sandium Heating and Air
Location: San Jose, CA
Posted Aug 05, 2025
*MUST have a minimum of three (3) years of experience as a project manager overseeing new construction HVAC projects, including estimating, design coordination,…
Registered Nurse II
Company: Stanford Medicine Partners
Location: Menlo Park, CA
Posted Aug 05, 2025
Retrieves voicemails and incoming faxes and handling at least once per hour. Basic Windows skills to include keyboarding, mouse movement and computer data entry…
Part Time Substitute Educator - Santa Clara School District
Company: Right At School
Location: Santa Clara, CA
Posted Aug 05, 2025
Pet Health: Pet discount programs and pet insurance. Organize and lead structured daily fitness, activities, and curriculum; that are both educational and…
Custom Cabinet Maker/Installer
Company: ClassicWorks
Location: Torrance, CA
Posted Aug 05, 2025
MUST HAVE EXPERIENCE I WONT HIRE ANYONE WILL NO EXPERIENCE. Must have an understanding of basic english.
Travel Nurse - Outpatient Clinic RN $2840/wk
Company: Nomad Health
Location: San Diego, CA
Posted Aug 05, 2025
Have an active RN license or be willing to obtain a Registered Nurse license in CA. To apply as a travel RN with us, you must have an active Professional…
Part-Time Cashier (Rotten Robbie #67)
Company: Robinson Oil Corporation
Location: San Jose, CA
Posted Aug 05, 2025
Along with sales transactions, everyone on the team helps with stocking, cleaning, and other duties to keep the store running smoothly and looking great.
Registered Nurse – Emergency Room Nights $17 Differential
Company: Martin Luther King, Jr. Community Hospital
Location: Los Angeles, CA
Posted Aug 05, 2025
Excellent partnership with 24/7 social work and care management teams. The Clinical Staff RN is a skilled and experienced professional Registered Nurse (RN)…
AT&T Customer Associate
Company: NMI Development
Location: Milpitas, CA
Posted Aug 05, 2025
Set up customer installation appointments and ensure follow-through. Assist in managing sales leads and updating the sales pipeline.