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.
Flexible Schedule: After-School Teacher (K–8) – San Jose
Company: The Education Team
Location: Milpitas, CA
Posted Aug 19, 2025
Flexible After-School Substitute Teachers – San Jose*. Flexible schedule — YOU set your availability. Competitive hourly pay (higher rates for AA/BA degrees).
Customer Service Rep
Company: Manpower
Location: Fremont, CA
Posted Aug 19, 2025
We develop innovative solutions for hundreds of thousands of organizations every year, providing them with skilled talent while finding meaningful, sustainable…
Batch Operator
Company: Sika
Location: Newark, CA
Posted Aug 19, 2025
Sika fosters a culture of entrepreneurship, empowering each individual to make decisions, learn from experiences, and shape their own career path.
Client Success Representative - San Diego
Company: ChemoMetec Inc.
Location: La Jolla, CA
Posted Aug 19, 2025
Is comfortable using CRM tools and managing accurate records (Zoho CRM is a plus). Deliver first-class customer service and ensure client satisfaction with…
Apprentice Plumber - Helper
Company: Allstar Plumbing
Location: San Jose, CA
Posted Aug 19, 2025
We also offer flexible schedules, 24/7 year-round recession-proof employment, direct deposit, field support, and advancement opportunities.
DevSecOps Engineer
Company: Peraton
Location: San Diego, CA
Posted Aug 19, 2025
Peraton provides engineering services including architecture, software development, cybersecurity engineering, test & integration planning, integration,…
CNC Machinist 3
Company: Slingshot ConnectionS
Location: Fremont, CA
Posted Aug 19, 2025
Collaborate with engineering and CAM programming teams to develop and improve CNC programs. Ability to troubleshoot and resolve mechanical and technical issues.
Entry Level Sales Assistant
Company: CI Service Consulting
Location: Chula Vista, CA
Posted Aug 19, 2025
The Entry Level Sales Assistant will drive customer engagement of our clients services by being involved with our sales team to introduce and educate consumers…
Pharmacist - Short-Term Cover Staffing
Company: RapidStaff
Location: San Diego, CA
Posted Aug 19, 2025
Collaborate with physicians and other healthcare professionals to develop and implement patient care plans. Join RapidStaff to support critical healthcare needs…
Flexible Schedule: After-School Teacher (K–8) – San Jose
Company: The Education Team
Location: San Jose, CA
Posted Aug 19, 2025
Flexible After-School Substitute Teachers – San Jose*. Flexible schedule — YOU set your availability. Competitive hourly pay (higher rates for AA/BA degrees).
Senior Staff Software Engineer
Company: Speridian Technologies
Location: Mountain View, CA
Posted Aug 19, 2025
Provide technical leadership during system-critical design reviews, offering guidance and deep technical insights to drive sound decision-making.
Security Guard - Unarmed Patrol - Full Time
Company: Allied Universal
Location: Fremont, CA
Posted Aug 19, 2025
A valid driver's license will be required for driving positions only. Guard Card or license is preferred. Assist with access control by monitoring entry and…