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.
Data Scientist - Manufacturing Analytics
Company: Hadrian Automation
Location: Los Angeles, CA
Posted Oct 02, 2025
Working with limited but high-quality data, you'll develop innovative approaches to predict queue dynamics, optimize inventory levels, and forecast demand in…
EVS Housekeeping (CHLA)
Company: Hire Pace Solutions
Location: Los Angeles, CA
Posted Oct 02, 2025
Cleans offices, patients’/residents’ rooms, common areas, lavatories, halls, food service areas and any other areas that may require attention.
MIG Welder / Manual Machinist
Company: CMSP Associates LLC
Location: Santa Fe Springs, CA
Posted Oct 02, 2025
Candidates with 2 years of experience plus welding training/certification may also be considered. Candidates with 3-4 years of experience plus machining…
Armed Field Supervisor (San Diego Locations)
Company: Unified Protective Services, Inc
Location: San Diego, CA
Posted Oct 02, 2025
Have a valid Driving License. Have a valid Guard Card. Have a valid Firearm Permit. Minimum of 2 years of Security Guard experience. Have a good DMV record.
Certified Electrician
Company: TENCO SOLAR
Location: San Diego, CA
Posted Oct 02, 2025
Provide and maintain a current driver's license and a clean driving record to safely operate a company vehicle. Maintain truck tools and material inventory.
Accounting Manager
Company: Vaco by Highspring
Location: San Diego, CA
Posted Oct 02, 2025
Partner with technical accounting teams on complex or non-standard transactions. Background in driving systems implementations and process enhancements.
Entry Level Customer Service Representative (CSR)
Company: Orange County Connections
Location: South Los Angeles, CA
Posted Oct 02, 2025
In this role, you’ll be a key part of our outreach events, engaging directly with individuals to answer questions, guide them through the enrollment process,…
CNC Setup Machinist - 1st Shift
Company: 5TH AXIS INC
Location: San Diego, CA
Posted Oct 02, 2025
You’ll play a key role in reviewing manufacturing documents, setting up tools and machines, and collaborating with our talented team to deliver excellence.
Customer Service Agent
Company: NMI Development
Location: San Jose, CA
Posted Oct 02, 2025
Execute service enrollments and close client transactions efficiently and with a high level of customer service. Proficient communication and people skills.
Customer Service Associate
Company: Nova Management
Location: Palo Alto, CA
Posted Oct 02, 2025
Work cross-functionally to identify ways to enable world-class customer service and sales practices at a scale.
Customer Enrollment Associate
Company: Confidential
Location: East Los Angeles, CA
Posted Oct 02, 2025
Provide outstanding customer service and maintain accurate records of sales to ensure smooth installation and follow-up processes.
Chef/Dietary Supervisor
Company: Crescent Oaks Memory Care
Location: Sunnyvale, CA
Posted Oct 02, 2025
Maintains a positive and professional demeaner towards all residents, their family members and guests, and co-workers. Maintains a quality assurance program.