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.
Preschool Teacher
Company: Aspen Leaf Preschool
Location: San Diego, CA
Posted Aug 28, 2025
Current TB test; fingerprint clearance (LiveScan); current first aid & CPR certification. Monitor student progress and tailor your teaching methods to meet the…
Manager, Marketing
Company: PayPal
Location: San Jose, CA
Posted Aug 29, 2025
We enable consumers to exchange funds more safely with merchants using a variety of funding sources, which may include a bank account, a PayPal or Venmo account…
Substitute Teacher
Company: Swing Education
Location: San Jose, CA
Posted Aug 28, 2025
Daily rates from $200 to $280 depending on school, location, and your certification. We support substitute teachers with meaningful perks, real-time tools, and…
IDS Research Pharmacist
Company: UCLA Health
Location: Los Angeles, CA
Posted Aug 28, 2025
Pharm D. degree and current CA Pharmacy license. Knowledge of good clinical practice and human subjects protection.
Customer Service Representative
Company: Hall's Culligan Water
Location: San Diego, CA
Posted Aug 28, 2025
Accurately document customer interactions and transactions in customer service software. Culligan CSRs spend all their time working in the dealership, more…
Manufacturing Data Analyst
Company: Sanmina Corporation
Location: San Jose, CA
Posted Aug 28, 2025
This position is ideal for a motivated individual with a background in Electronics Engineering, Materials Science, or Chemistry or related field, coupled with…
Substitute Teacher
Company: Swing Education
Location: El Cajon, CA
Posted Aug 28, 2025
Daily rates from $150 to $280 depending on school, location, and your certification. We support substitute teachers with meaningful perks, real-time tools, and…
Substitute Teacher
Company: Swing Education
Location: San Diego, CA
Posted Aug 28, 2025
Daily rates from $150 to $280 depending on school, location, and your certification. We support substitute teachers with meaningful perks, real-time tools, and…
Manager, Customer Service
Company: Santa Clara Family Health Plan
Location: San Jose, CA
Posted Aug 28, 2025
Work cross-functionally with other business units to identify trends driving call volumes and support initiatives to identify and implement interventions to…
Corporate Security Officer - Supervisor
Company: Inter-Con Security Systems
Location: Del Mar, CA
Posted Aug 28, 2025
Also calls for flexibility, excellent interpersonal skills, and the ability to work well with all levels of internal management and staff, as well as outside…
Accountant
Company: City of Lynwood
Location: Lynwood, CA
Posted Aug 28, 2025
Special Requirements: Possession of a valid California Class C driver's license issued by the State Department of Motor Vehicles and good driving record.
Security Specialist
Company: Gavin de Becker & Associates
Location: San Jose, CA
Posted Aug 28, 2025
PLT includes 500 hours of training, mentoring, instructing, and certification + 4 additional advanced executive protection/leadership training academies.