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.
Lead Retail Sales Associate
Company: Saatva
Location: San Diego, CA
Posted Oct 02, 2025
We provide competitive compensation and a comprehensive benefits package to our employees, including robust health coverage, 401(k) matching, and generous paid…
Full-Stack Backend Engineer
Company: Express Marketing Inc
Location: Torrance, CA
Posted Oct 01, 2025
Review, test, and merge contractor code to ensure performance, maintainability, and reliability. Familiarity with API Gateway and reverse proxy tools (Kong,…
Per Diem Registered Nurse - School Nursing
Company: Ro Health, LLC
Location: San Jose, CA
Posted Oct 02, 2025
Monitor and manage immunization records to ensure compliance with state regulations. Develop and implement emergency response plans and drills.
Registered Nurse - School Nursing
Company: Ro Health, LLC
Location: San Jose, CA
Posted Oct 02, 2025
Monitor and manage immunization records to ensure compliance with state regulations. The success of Ro Health depends on the success of our providers, driving…
Frontend Software Developer - No React
Company: Subinitial LLC
Location: El Cajon, CA
Posted Oct 02, 2025
Measure front-end performance to guide architecture decisions. The ideal candidate has well rounded knowledge and experience across the full-stack of web…
Credentialed School Nurse
Company: Ro Health, LLC
Location: San Jose, CA
Posted Oct 02, 2025
Monitor and manage immunization records to ensure compliance with state regulations. Develop and implement emergency response plans and drills.
Janitor/Cleaner
Company: Grandview Commercial Cleaning
Location: Otay Mesa, CA
Posted Oct 02, 2025
As a contracted cleaner, you will be responsible for maintaining the cleanliness and appearance of the HOA’s shared community spaces.
U103 MACHINIST-TOOLING
Company: Northrop Grumman
Location: Sunnyvale, CA
Posted Oct 02, 2025
Plan machining operations and set up and operate a variety of machine tools and attachments to make, alter and repair parts of overall designs and tools and…
Janitor
Company: Controlled Contamination Services LLC
Location: San Jose, CA
Posted Oct 02, 2025
Loud environments (examples: metal can manufacturing department, large earth-moving equipment). Note and report all areas in need of repair and any hazardous…
CARPENTER, MAINTENANCE (PRODUCTION SUPPORT SERVICES)
Company: AFFORDABLE ENGINEERING SERVICES, INC.
Location: Coronado, CA
Posted Oct 02, 2025
Work involves most of the following: planning and laying out of work from blueprints, drawings, models, or verbal instructions, using a variety of carpenter's…
Senior Project Manager, Construction & Tenant Services
Company: Federal Realty Investment Trust
Location: La Mesa, CA
Posted Oct 02, 2025
The Senior Project Manager serves as a key liaison between Federal Realty, tenants, architects, consultants, contractors, and internal stakeholders, driving…
Tax & Compliance Manager
Company: Technical Safety Services
Location: La Jolla, CA
Posted Oct 01, 2025
Requires a bachelor’s degree in accounting, finance, business administration, or another related field. Support any state or local audits and tax compliances…