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.
Security Guard - TWIC Seasonal
Company: GardaWorld Security Services US
Location: Carson, CA
Posted Aug 05, 2025
You have a state security license (*BSIS Guard Card*) and additional 32 hrs. security trainings. Control access to secure areas and verify the identities of…
Retail Sales Associate
Company: My Wireless - AT&T Authorized Retailer
Location: Los Angeles, CA
Posted Aug 05, 2025
Experience prospecting through outbound calls. Training and developing your skills to become a top My Wireless Retail Sales Associate, which leads to…
Membership Analyst
Company: SEIU Local 721
Location: Los Angeles, CA
Posted Aug 05, 2025
Salary range as of September 1, 2024 $86,068.74 (entry) - $91,392.57 (10+ years). Conduct root cause analysis to identify systemic (organizational, processes,…
Principal Data Scientist - Remote
Company: Optum
Location: San Diego, CA
Posted Aug 05, 2025
8+ years of experience in machine learning or data science: data analysis, algorithm design, model architecture specification, machine learning algorithm…
Graphic Designer
Company: Run Studios Llc
Location: Santa Clara, CA
Posted Aug 05, 2025
Experience in B2B design, video editing, and motion graphics is a strong plus. Physical demands of the job, including bending, sitting, lifting and driving.
Sous Chef
Company: Shade Hotel Manhattan Beach
Location: Manhattan Beach, CA
Posted Aug 05, 2025
Liaise with the front of the house and hotel staff, ensuring a positive guest experience. Compensation: $70,000-$75,000/year D.O.E.| generous incentive program…
Welder - Level 1
Company: Precision Castparts Corp.
Location: South Gate, CA
Posted Aug 05, 2025
Person, as defined in those regulations, and able to supply evidence of that qualification prior to starting work or be authorized to receive controlled…
Controller
Company: San Diego Center for the Blind
Location: San Diego, CA
Posted Aug 05, 2025
Conduct cash flow projections and propose strategic cost-saving or revenue-generating measures. Perform regular budget-to-actual analysis with variance…
RN Certified Diabetes and Education Specialist
Company: Martin Luther King, Jr. Community Hospital
Location: Los Angeles, CA
Posted Aug 05, 2025
Minimum of two (2) years of clinical nursing experience and a minimum two (2) years diabetes education experience with inpatient and outpatient settings.
Construction Accounting Manager
Company: O.L. Development, Inc.
Location: Sun Valley, CA
Posted Aug 05, 2025
Bachelor’s degree in Accounting, Finance, or a related field—CPA or CMA certification preferred to demonstrate professional expertise.
Software QA Engineer
Company: Bio-Techne
Location: San Jose, CA
Posted Aug 05, 2025
The responsibilities of this position are to be responsible for the design of test solutions to verify protein analysis product software.
Senior OpenText (OT) Documentum Architect
Company: The Norland Group
Location: Downey, CA
Posted Aug 05, 2025
Three (3) years of experience in developing, modifying, supporting, and remediating/upgrading OpenText Documentum applications in RHEL Shared environment;…