Tech Jobs in Ontario, CA
172,827 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.
Plumber 3443 (A)
Company: City of Los Angeles, CA
Location: Los Angeles, CA
Posted Aug 08, 2025
A Plumber does skilled work in the layout, installation, repair, and maintenance of sanitary and industrial plumbing systems, process piping, and fuel…
Commercial Refrigeration Technician
Company: Paramount Placement
Location: El Cajon, CA
Posted Aug 08, 2025
This role involves field-based service, repair, and installation of commercial refrigeration systems across restaurants, grocery stores, convenience stores, and…
Healthcare Security Supervisor - Santa Clara, CA
Company: Blackstone Consulting, Inc
Location: Santa Clara, CA
Posted Aug 08, 2025
Prevents unapproved or unlawful entry. May enforce regulations pertaining to personnel and visitors. Provides information regarding the facility and surrounding…
Entry Level Controls & Software Test Engineer
Company: Solar Turbines
Location: San Diego, CA
Posted Aug 08, 2025
The ideal candidate for this position would be an entry-level Electrical Engineer, Computer Engineer or Mechanical Engineer, with an interest in electrical…
Plumber Service Technician (Experience 5 yrs req)
Company: Benjamin Franklin Plumbing
Location: Long Beach, CA
Posted Aug 08, 2025
Clean driving record, must be insurable as position requires driving in the field and go on daily plumbing repair and installation jobs.
Customer Service Manager
Company: PACIFICA TRUCKS LLC
Location: Long Beach, CA
Posted Aug 08, 2025
Directly supervises 3-5 contractors based abroad. Language Skills: Ability to read, analyze, and interpret general business periodicals, professional journals,…
CDL Roll Off Driver
Company: Eco-Pan
Location: Sun Valley, CA
Posted Aug 08, 2025
Must have a clean driving record, valid Class A or B CDL (including air brake endorsement). Must possess valid DOT medical card. Travel to various job sites.
Program Manager - IOP
Company: Horizon Health
Location: San Diego, CA
Posted Aug 08, 2025
Understanding of state and The Joint Commission requirements for outpatient behavioral health services. Under the guidance of the Clinic Director, this position…
Adjunct RN (Pediatrics) Clinical Instructor
Company: Marsha Fuerst School of Nursing
Location: Glendale, CA
Posted Aug 08, 2025
Current CA RN license; BLS required, ACLS/PALS as needed. Supervise and evaluate students during clinical rotations and ensure clinical competency.
Product Test (Automated Test, System Test, Software Test) Engineer
Company: TrellisWare Technologies, Inc - Recent Grads
Location: San Diego, CA
Posted Aug 08, 2025
They create, design, and implement test cases and test systems in controlled lab environments and in uncontrolled field test environments such as tunnels, ships…
Senior Revenue Accountant-ASC 606
Company: Radiant Systems Inc
Location: Milpitas, CA
Posted Aug 08, 2025
Bundle creation in SAP/RAR - linkage, assignment of SSP to tie back to Excel FV Analysis. Need to be able to work longer QE hours.
Senior Accountant
Company: JC Sales
Location: Vernon, CA
Posted Aug 08, 2025
This person will work very closely with the Accounting Manager to review all operational procedures and issues and recommend changes, drive process improvements…