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.
Senior Principal Engineer- End-to-End AI Training Framework
Company: Bosch Group
Location: Sunnyvale, CA
Posted Oct 01, 2025
As the Senior Principal Engineer, E2E AI Training Framework for Autonomous Driving Systems, you will spearhead the development and optimization of the machinery…
Senior Principal Engineer- AI-based Autonomous Driving Systems
Company: Bosch Group
Location: Sunnyvale, CA
Posted Oct 01, 2025
10+ years of experience in data-driven software engineering and product development of AI-based autonomous driving systems.
ARMED SECURITY NEEDED IN THE SAN FERNANDO VALLEY
Company: Special Unit Security
Location: Sun Valley, CA
Posted Oct 01, 2025
ARMED SECURITY OFFICERS NEEDED FOR IMMEDIATE FULL TIME EMPLOYMENT IN THE SAN FERNANDO VALLEY MORNING AND SWING SHIFTS AVAILABLE.
Customer Service and Sales Representative
Company: Confidential
Location: Woodland Hills, CA
Posted Oct 01, 2025
Acting as a trusted point of contact to advice customers on service offerings and develop effective solutions to meet their specific needs.
Pharmacist - Transplant
Company: UCLA Health
Location: Los Angeles, CA
Posted Oct 01, 2025
Pharm D. degree and current CA Pharmacy license. Demonstrated ability to speak in front of large groups to present didactic course material or scientific data.
AT&T Representative - Entry Level
Company: Off Shore Management
Location: San Jose, CA
Posted Oct 01, 2025
The Entry Level AT&T Representative position is an entry-level role with no prior experience required. Deliver excellent customer service by addressing concerns…
Preschool Teacher
Company: Challenger School Foundation
Location: San Jose, CA
Posted Oct 01, 2025
After successful completion of that program, you will be given a classroom of your own to teach and manage. Thoroughly learn Challenger’s curriculum, teaching…
Configuration Analyst
Company: Santa Clara Family Health Plan
Location: San Jose, CA
Posted Oct 01, 2025
Combine in-depth analysis of application configuration and data, information gathered through independent research, knowledge of system capabilities and…
Plumber
Company: 5 Star Best Plumbing
Location: San Jose, CA
Posted Oct 01, 2025
Valid driver’s license and clean driving record. Unique marketing strategy for consistent service calls. Our Plumber will be responsible for drain cleaning,…
Elementary Teacher
Company: Challenger School Foundation
Location: San Jose, CA
Posted Oct 01, 2025
Specific teaching degrees and certificates are not required to teach at Challenger School; we will teach you how to teach! Ability to pass a background check.
Housekeeper | Janitor
Company: Crestwood Behavioral Health
Location: San Diego, CA
Posted Oct 01, 2025
Job Duties: The Housekeeper | Janitor is responsible for assisting with the overall functions of the housekeeping department and maintaining the facility in a…
Custodian
Company: Moreno & Associates, Inc
Location: San Jose, CA
Posted Oct 01, 2025
Clean the lobby, reception, or any other assigned areas by your supervisor. Work in varying temperature environments (internal and external buildings).