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.
Software Integration & Systems Engineer
Company: Mycronic
Location: Redondo Beach, CA
Posted Sep 04, 2025
Bachelor's degree in Engineering, Computer Science, or a related technical field; equivalent professional experience will also be considered.
Janitorial Worker- 6pm to 2:30am
Company: Flagship Facility Services, Inc.
Location: Los Angeles, CA
Posted Sep 04, 2025
Sweeps, vacuums, mops, scrubs, waxes and polishes floors using industrial vacuum cleaners and scrubbing and buffing machines. Clean glass on lobby door.
Kitchen Manager / Sous Chef; Monday-Friday Only
Company: Integrated Support Solutions, Inc.
Location: Long Beach, CA
Posted Sep 04, 2025
Menu design and/or modifications as required, working with the Executive Chef. Supplemental insurances, including accident and hospital indemnity.
Production Line Packaging Operator
Company: Ultimate Staffing Services
Location: Hayward, CA
Posted Sep 04, 2025
Occasionally walk, use hands to handle objects/tools, climb stairs, kneel, crouch, or balance. For unincorporated Los Angeles county, to the extent our…
Retail Cosmetics Sales Associate, Oakridge
Company: Macy's
Location: San Jose, CA
Posted Sep 04, 2025
*Collaboration*: Partnership with the total Beauty team to drive sales and deliver the customer experience. Use our clientele program to connect with customers,…
Unit Risk and Compliance Analyst - URCA 25-29001
Company: NavitsPartners
Location: San Jose, CA
Posted Sep 04, 2025
Maintain a security risk log and implement prioritized risk mitigation strategies. Engage with stakeholders to conduct risk assessments and implement mitigation…
Outdoor Custodial Worker
Company: District Maintenance Services
Location: Glendale, CA
Posted Sep 04, 2025
As a team member, you'll patrol assigned areas using a vehicle, cart, and hand tools to ensure public spaces are well-maintained and welcoming.
Workshop Carpenter
Company: Interior Door Replacement Company
Location: Santa Clara, CA
Posted Sep 04, 2025
The ideal candidate will have experience working with table saw, router, miter saw, CNC machinery, and various woodworking hand tools.
Preschool Teacher
Company: Great Beginnings Preschool
Location: Valley Village, CA
Posted Sep 04, 2025
Monitor and assess each child's progress and provide feedback to parents. Create and implement age-appropriate lesson plans for preschool children.
Overhead Patient Lift Lead installer
Company: Guldmann Inc
Location: Los Angeles, CA
Posted Sep 04, 2025
High school diploma (minimum) and 10 years plus construction and overhead patient lift installation experience.
Grants Management Analyst
Company: City of Cupertino, CA
Location: Cupertino, CA
Posted Sep 04, 2025
Techniques for dealing effectively with the public, vendors, contractors, and City staff, in person and over the telephone. Train staff in work procedures.
Senior Manager, External Programs
Company: ASML
Location: San Diego, CA
Posted Sep 04, 2025
Together with Government Affairs teams, investigate potential (new) external funding options (grants etc) for projects or for establishing teaching capability…