Tech Jobs in Ontario, CA
172,845 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.
Associate Accountant
Company: San Diego Association of Governments
Location: San Diego, CA
Posted Aug 02, 2025
Participate in financial audits conducted by independent certified public accounting firms; assist with establishing procedures, controls, and policies to…
Badging Security Officer - CA DL Required (temp)
Company: Securitas
Location: San Diego, CA
Posted Aug 02, 2025
Does require a valid CA DL and the shift is 0800-1600 Monday-Friday with Sat/Sun off. They preserve order while enforcing regulations and directives for a…
Labor Compliance & Local Hiring Administrator
Company: Pride Resource Partners LLC
Location: Los Angeles, CA
Posted Aug 02, 2025
Provide guidance and technical support to contractors and staff on labor compliance procedures and requirements. Strong organizational and documentation skills.
Machine Learning Engineer Graduate (Monetization GenAI) - 2026 Start (BS/MS)
Company: TikTok
Location: San Jose, CA
Posted Aug 02, 2025
Research, implement and evaluate novel machine learning algorithms on generative models; 3. Collaborate with applied machine learning teams and infrastructure…
City Rise Safety - Rental/Project Management Coordinator
Company: City Rise LLC
Location: Fremont, CA
Posted Aug 02, 2025
The position will schedule project timelines, equipment rental timelines and provide support to customers, traffic technicians, warehouse, accounting…
Registered Nurse (RN) Pediatric School Nurse - Per Diem
Company: Ro Health, LLC
Location: Chula Vista, CA
Posted Aug 02, 2025
Support available to obtain your school nurse services credential. Competitive compensation and weekly paychecks. Must Be Okay With Trachs.
Sr. Cyber Security Architect (1291)
Company: Hyundai Translead
Location: San Diego, CA
Posted Aug 02, 2025
Bachelor’s Degree in Computer Science, Information Security, Information Technology, Cybersecurity, or a related field. 401K plan with 4% Employer Matching.
Roofer
Company: City of San Diego
Location: San Diego, CA
Posted Aug 02, 2025
Roofer positions apply various types of roofs that are built with composition shingles and shakes, modified bitumen, thermoplastic, vulcanized, and non-…
Security Officer (Part Time) - Hilton San Diego Bayfront
Company: Hilton
Location: San Diego, CA
Posted Aug 02, 2025
As a Security Officer, you would be responsible for ensuring the safety of guests and team members and the security of the hotel and property in the hotel's…
Senior Staff Software Engineer
Company: Cepheid
Location: Sunnyvale, CA
Posted Aug 02, 2025
Mentor and develop other engineers by providing technical guidance, reviewing work and sharing knowledge. Contributes to the development of software tools and…
Overnight Hotel Security Attendant
Company: AC Hotel
Location: San Jose, CA
Posted Aug 02, 2025
The purpose of a Security Attendant is to ensure the safety of guests and associates and the security of the hotel and property in the hotel’s continuing effort…
Sr Analyst, Data Analytics
Company: paypal
Location: San Jose, CA
Posted Aug 02, 2025
Undergraduate degree in a quantitative (such as Applied Mathematics, Statistics, Engineering or Computer Science) field required and 5+ years related…