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.
Service Manager (Commercial/Residential Plumbing)
Company: HPS Mechanical, Inc.
Location: San Diego, CA
Posted Oct 02, 2025
Responsible for unhappy customers and field visits to solve issues when needed. In charge of all Service Department advertising and social media.
PRE-SCHOOL and ELEMENTARY PHYSICAL EDUCATION (PE) TEACHERS NEEDED ASAP!!
Company: Mission Bay Montessori Academy
Location: San Diego, CA
Posted Oct 02, 2025
Valid teaching credential or certification in Physical Education (california state). Contribute to wellness initiatives, field days, after-school clubs, and…
Plumbing Technician
Company: Oro Pro Plumbing Inc
Location: Redwood City, CA
Posted Oct 02, 2025
Valid California driver’s license with a clean driving record. Provide excellent customer service, explain work performed, and answer client questions.
Temporary Chef
Company: AFC Franchise Corp.
Location: Santee, CA
Posted Oct 02, 2025
Ability and willingness to learn multiple tasks and technical requirements of the job. Tolerate working in cold temperatures in the prep room.
Data Scientist II
Company: Scribd
Location: San Diego, CA
Posted Oct 02, 2025
Bachelors or Masters in relevant quantitative discipline including but not limited to Statistics, Computer Science, Data Science, Artificial Intelligence or…
Maintenance Technician Industrial Electrician
Company: Howmet Aerospace
Location: Torrance, CA
Posted Oct 02, 2025
Perform mechanic skills including but not limited to, mechanical, electrical, pneumatic, hydraulic, troubleshooting, and repair of production machines.
Sign & Graphics Installer / Production Specialist
Company: FASTSIGNS Redwood City
Location: Redwood City, CA
Posted Oct 02, 2025
Valid driver's license with an excellent driving record and reliable transportation. Safely use a variety of power tools and hand tools, including but not…
Entry Level Sales Associate
Company: Confidential
Location: San Diego, CA
Posted Oct 02, 2025
Must have your own vehicle. Due to our recent client demand, we have immediate openings for our entry-level *customer service*, event *sales positions*!
Marine Electrician - San Diego
Company: KSARIA Corporation
Location: Lincoln Acres, CA
Posted Oct 02, 2025
Knowing and understanding the use of all tools of their trade such as multi-meters, pin crimper's, soldering and expected to accomplish the more complex tasks…
Janitor (On Call)
Company: Flagship Facility Services, Inc.
Location: San Diego, CA
Posted Oct 02, 2025
Requirements*Clean driver’s license. We do not discriminate on the basis of race, color, religion, marital status, age, national origin, ancestry, physical or…
Service Plumber
Company: ASAP Drain Guys and Plumbing
Location: Poway, CA
Posted Oct 02, 2025
Take-home company service truck, gas card, and company cell phone. Ability to troubleshoot, repair and replace plumbing fixtures, including faucets, toilets,…
Temporary Chef
Company: AFC Franchise Corp.
Location: San Diego, CA
Posted Oct 02, 2025
Ability and willingness to learn multiple tasks and technical requirements of the job. Tolerate working in cold temperatures in the prep room.