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.
Marine Electrician Journeyman I - V
Company: PROPULSION CONTROLS ENGINEERING LLC
Location: San Diego, CA
Posted Aug 01, 2025
PCE is a full service electro-mechanical repair and diesel repair contractor. Install, repair and connect equipment for all electrical services on the ship…
Substitute Teacher
Company: Para Los Niños
Location: Los Angeles, CA
Posted Aug 01, 2025
Bachelor's Degree in applicable field of education from a regionally accredited college or university. Whether in a short-term or long-term assignment, the…
Marine Electrician Lead
Company: PROPULSION CONTROLS ENGINEERING LLC
Location: San Diego, CA
Posted Aug 01, 2025
PCE is a full service electro-mechanical repair and diesel repair contractor. Diagnose and troubleshoot malfunctioning electrical equipment, determine…
Welder, Precision Finishing Technician
Company: Rocket Lab Corporation
Location: Long Beach, CA
Posted Aug 01, 2025
Must be able to move repetitively, bend or twist, and use hands to handle, control, or feel objects, tools or controls. Experience welding on .011 - .250.
Weekend Industrial Controls Electrician
Company: Anheuser-Busch
Location: Van Nuys, CA
Posted Aug 01, 2025
Two year Associates Degree, technical certification, or equivalent industrial electrician work experience a plus. Ensure quality standards are met at all times.
Model-Based Systems Engineer
Company: BOOZ, ALLEN & HAMILTON, INC.
Location: El Segundo, CA
Posted Aug 01, 2025
Ability to identify, analyze, and resolve technical risks and issues, develop technical reports, and collaborate with government and other stakeholders to…
CNC Operator- 3rd Shift
Company: 5TH Axis Inc
Location: San Diego, CA
Posted Aug 01, 2025
We pledge to continually improve our quality standards to maintain a position at the forefront in our field of expertise. 401K with up to 4% matching.
Welder Lead
Company: PROPULSION CONTROLS ENGINEERING LLC
Location: San Diego, CA
Posted Aug 01, 2025
PCE is a full service electro-mechanical repair and diesel repair contractor. As such, candidates must be eligible to obtain base access clearance, which…
Route Service Driver San Jose CA
Company: United Site Services
Location: San Jose, CA
Posted Aug 01, 2025
Perform basic service truck driving functions in accordance with USS and DOT requirements. Minimum two years of commercial driving experience.
Plumbing Superintendent
Company: NP Mechanical Rice Services Inc
Location: Los Angeles, CA
Posted Aug 01, 2025
When necessary; assist and train field team as needed. Proven ability to supervise, lead and develop teams. The construction environment is subject to changes…
Engineering Manager
Company: GENERAL ATOMICS
Location: Poway, CA
Posted Aug 01, 2025
Typically requires a Bachelors, Masters or PhD in engineering or a related technical field as well as eleven or more years of progressively complex engineering…
Installer 2
Company: Pivot Interiors
Location: Fremont, CA
Posted Aug 01, 2025
The ability to return phone calls (leave voice mails) and respond to voice mails quickly. Has knowledge of commonly used concepts, practices, and procedures…