Tech Jobs in Ontario, CA
172,772 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.
Administrative Registered Nurse
Company: Women's Care
Location: Beverly Hills, CA
Posted Sep 29, 2025
Scheduling of IVF procedures (via email and phones). Communication with IVF laboratory, clinical teams and physicians. Review of consents and physician orders.
Substitute Teacher K-12
Company: Scoot Education
Location: Los Angeles, CA
Posted Sep 28, 2025
Earn up to $268 for day-to-day assignments and more for long-term pay varies by certification, school, and assignment. A TB risk assessment or test.
Registered Nurse - Emergency
Company: Sollis Health
Location: Palo Alto, CA
Posted Sep 29, 2025
Make patients comfortable, patiently and professionally answering any questions they have and using patient-centered empathetic communication at all times.
Substitute Preschool Teacher - Immediate Start
Company: Zen Educate US
Location: Solana Beach, CA
Posted Sep 28, 2025
Support children’s social, emotional, and academic growth. Maintain classroom organization, safety, and licensing standards. Pediatric CPR/First Aid certified.
Carpenter Plumber Electrician Residential Apprentice
Company: Gary Faith Construction Inc
Location: San Diego, CA
Posted Sep 29, 2025
Operate power tools and/or industrial equipment. At least 4 years experience in at least 1 trade (rough framing, plumbing, electrical).
Data Analyst - Storage Technologies
Company: Apple
Location: Cupertino, CA
Posted Sep 29, 2025
On the Storage Data Analytics team, we are responsible for ad hoc data analysis, developing and maintaining distributed data pipelines, and creating and…
Machine Learning Engineer/ Communications/ West Los Angeles / Hybrid
Company: Motion Recruitment
Location: Los Angeles, CA
Posted Sep 29, 2025
M.S. or Ph.D. in Electrical Engineering, Computer Science, or related field. If you're looking for the chance to solve real, impactful challenges with deep…
Plumbing Apprentice
Company: Almco Plumbing
Location: San Diego, CA
Posted Sep 28, 2025
Previous experience in a related field is a plus. Assist journeyman/journeywoman plumbers in the installation, repair, and maintenance of plumbing systems.
Substitute Teacher K-12
Company: Scoot Education
Location: Pasadena, CA
Posted Sep 28, 2025
Earn up to $218 for day-to-day assignments and more for long-term pay varies by certification, school, and assignment. A TB risk assessment or test.
Residential Security Agent - Part Time Only
Company: Crisis24
Location: San Diego, CA
Posted Sep 28, 2025
Possess a valid and current driver’s license. Possess a valid and current Basic Lifesaver Course (BLS) certification for Pediatric/Adult care.
Software Engineer - Data
Company: Apple
Location: San Diego, CA
Posted Sep 29, 2025
Embrace data platform thinking, design and develop data pipelines keeping security, scale, uptime and reliability in mind.
AIML - Financial Analyst, Data Operations
Company: Apple
Location: Cupertino, CA
Posted Sep 28, 2025
2-3 years financial experience performing budgeting, forecasting, reporting, and analysis along with a track record of strong financial modeling skills.