Tech Jobs in Ontario, CA
172,812 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.
Retail Associate
Company: Ross Stores
Location: San Ysidro, CA
Posted Aug 11, 2025
Responds to Customer Service calls immediately. Follows all policies and procedures concerning cash, check, charge card and refund transactions, voids and…
Customer Care Specialist - EDI Experience
Company: Confidential
Location: Vernon, CA
Posted Aug 11, 2025
Review and correct customer purchase orders prior to ERP entry. This role will serve as the primary liaison for assigned retail customer accounts, managing the…
Security Officer - Cleared (Clearance Eligible)
Company: Allied Universal
Location: Redondo Beach, CA
Posted Aug 11, 2025
Greet guests and employees and escorts visitors and contractors to secure entry and exit points. As a Cleared Security Officer, you'll receive specialized…
Research Data Analyst 1- Onsite/Hybrid Opportunity
Company: Stanford University
Location: Stanford, CA
Posted Aug 11, 2025
Use system reports and analyses to identify potentially problematic data, make corrections, and determine root cause for data problems from input errors or…
Localization Program Manager - TikTok Design (San Jose)
Company: TikTok
Location: San Jose, CA
Posted Aug 11, 2025
Experience with internationalization (i18n) engineering processes and best practices. Hands-on experience with AI-powered localization workflows, such as…
Sous Chef – San Pedro Social
Company: San Pedro Social/Slice of Homage
Location: San Jose, CA
Posted Aug 11, 2025
ServSafe or equivalent food safety certification (or ability to obtain). Assist with scheduling, ordering, inventory, and cost control.
DevSecOps Engineer - COBRA
Company: HII
Location: San Diego, CA
Posted Aug 11, 2025
9 years relevant experience with Bachelors in related field; 7 years relevant experience with Masters in related field; 4 years relevant experience with PhD or…
Accountant
Company: Starck Architecture and Planning
Location: San Diego, CA
Posted Aug 11, 2025
Perform double entry bookkeeping to ensure all financial transactions are recorded correctly. This role is crucial for maintaining accurate financial records,…
Business Intelligence Analyst
Company: AECOM
Location: San Diego, CA
Posted Aug 11, 2025
Translate complex data into clear, concise, and compelling visual stories and presentations for both technical and non-technical audiences through various…
Influencer Marketing Manager, Amazon MGM Studios
Company: Metro-Goldwyn-Mayer Studios Inc.
Location: Culver City, CA
Posted Aug 11, 2025
Experience in influencer marketing, social media, marketing, or a related field. You are fluent in social marketing best practices and know how to collaborate…
Machine Learning Engineer Graduate (Monetization Technology - TikTok Ads Creative & Ecosystem) - 2026 Start (BS/MS)
Company: TikTok
Location: San Jose, CA
Posted Aug 11, 2025
Bachelor's degree or higher in Computer Science or a related technical field. Demonstrated ability to drive innovation and business growth through technical…
Customer Service Representative
Company: Raphael's Party Rentals
Location: San Diego, CA
Posted Aug 11, 2025
Must be able to service customers in a polite, friendly and professional manner whether in person or on the telephone. Prepares rental forms and contracts.