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.
Jr Pastry Sous Chef
Company: DO & CO
Location: Redondo Beach, CA
Posted Aug 18, 2025
Support in producing and creating high-end pastry products served daily to hundreds of international airline guests. Support with shift schedules (when needed).
Travel Registered Nurse RN Labor and Delivery L&D
Company: OneStaffMedical
Location: Fremont, CA
Posted Aug 18, 2025
Weekly amount stated in the job postings is scaled based on estimated hourly wages and potential stipends available for the location of the assignment.
Custodian
Company: Verde Facilities
Location: Los Angeles, CA
Posted Aug 18, 2025
Customer Service: Provide courteous, helpful assistance to staff, visitors, and fellow team members, creating a positive and welcoming environment.
Sales and Marketing Director
Company: Ivy Living
Location: Chula Vista, CA
Posted Aug 18, 2025
Create trust and connect with prospective residents and their families through phone calls and tours of the community. Knowledge of MS Word, Excel, and Outlook.
Residential Service Plumber
Company: A to Z Plumbing Inc
Location: San Diego, CA
Posted Aug 18, 2025
The ideal candidate will have a minimum of 5 years of experience in plumbing residential and commercial service and repair and be knowledgeable in all aspects…
Bookkeeper/CPA
Company: Oliveda International Inc.
Location: Venice, CA
Posted Aug 18, 2025
The ideal candidate will have strong technical accounting knowledge, excellent organizational skills, and a CPA certification.
Home IV Infusion Nurse
Company: A Plus Health Staffing
Location: San Diego, CA
Posted Aug 18, 2025
Valid RN license to practice in the state of California. Graduate of an accredited Nursing school. Minimum of one year experience. WORK 1-1 WITH PATIENTS.
HVAC Service Tech - San Jose, CA
Company: Atlas Trillo Heating & Air Conditioning
Location: San Jose, CA
Posted Aug 18, 2025
Valid driver’s license & clean driving record. EPA certification (or ability to obtain). Discount Programs with our partnered accounts (Childcare, personal cell…
Data Scientist
Company: Parametrix, Inc.
Location: San Diego, CA
Posted Aug 18, 2025
A bachelor’s or master’s degree in Computer Science, Data Science, Information Technology, Statistics, Engineering, or a related field—or an equivalent…
Registered Nurse
Company: APR Consulting Inc
Location: Sunnyvale, CA
Posted Aug 18, 2025
Deliver OSHA and job/site/contract required surveillance program services (i.e. hearing conservation, respiratory protection, visual acuity, bloodborne…
Sales and Marketing Director
Company: Ivy Living
Location: Milpitas, CA
Posted Aug 18, 2025
Create trust and connect with prospective residents and their families through phone calls and tours of the community. Knowledge of MS Word, Excel, and Outlook.
Sales and Marketing Director - Senior Living
Company: Ivy Living
Location: San Jose, CA
Posted Aug 18, 2025
Create trust and connect with prospective residents and their families through phone calls and tours of the community. Knowledge of MS Word, Excel, and Outlook.