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.
Welder II
Company: EPSILON SYSTEMS
Location: San Diego, CA
Posted Oct 01, 2025
Knowledge of design techniques, tools, and principals involved in production of precision technical plans, blueprints, drawings, and models.
Sheet Metal Mechanic
Company: Solar Turbines Incorporated
Location: San Diego, CA
Posted Oct 01, 2025
Layout, fabricate and assemble special field service tools as ordered by Solar and/or customers. Assist weld engineer in developing procedures by setting up and…
Welder I
Company: EPSILON SYSTEMS
Location: National City, CA
Posted Oct 01, 2025
Knowledge of design techniques, tools, and principals involved in production of precision technical plans, blueprints, drawings, and models.
Welder II
Company: EPSILON SYSTEMS
Location: National City, CA
Posted Oct 01, 2025
Knowledge of design techniques, tools, and principals involved in production of precision technical plans, blueprints, drawings, and models.
Travel ICU RN
Company: Fusion Medical Staffing
Location: Woodland Hills, CA
Posted Oct 01, 2025
Valid RN license in compliance with state regulations. Critical Care Registered Nurse (CCRN) certification. As a member of our team, you'll have the opportunity…
Travel PCU Stepdown RN
Company: Fusion Medical Staffing
Location: West Hollywood, CA
Posted Oct 01, 2025
Current Valid RN license in compliance with state regulations. They assess and manage complex patient needs, administer medications and treatments, and…
Director, ICON Production
Company: NIKE
Location: Los Angeles, CA
Posted Oct 01, 2025
Bachelor's degree in Marketing, Communication, or related field. You will oversee all facets of production and casting globally building scalable models,…
Hardware Engineer (Tactical Network - CANES) | Active Secret clearance
Company: General Dynamics - GDIT
Location: San Diego, CA
Posted Oct 01, 2025
Our work depends on a Hardware Engineer who can lead shipboard/ashore design, integration, and installation of compute, storage, transport, and encryption…
CNC Operator- 3rd Shift
Company: 5TH Axis Inc
Location: San Diego, CA
Posted Oct 01, 2025
Reliability and ability to listen and follow instruction. 401K with up to 4% matching. Ability to read blueprints and highly proficient at dimensioning/…
CNC Lathe Operator; 1st shift 5:00am-3:30pm; $27-$29/hr.
Company: Stanley Black & Decker
Location: Fullerton, CA
Posted Oct 01, 2025
Ability to set-up a CNC lathe (including work holding, kitting of tools, touching off of tools/establishing offsets, reading of manufacturing drawings, and…
Welder II
Company: Epsilon Systems
Location: San Diego, CA
Posted Oct 01, 2025
Knowledge of design techniques, tools, and principals involved in production of precision technical plans, blueprints, drawings, and models.
Model-Based Systems Engineer
Company: BOOZ, ALLEN & HAMILTON, INC.
Location: El Segundo, CA
Posted Oct 01, 2025
Ability to identify, analyze, and resolve technical risks and issues, develop technical reports, and collaborate with government and other stakeholders to…