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.
AI security Analyst
Company: I20 Technologies
Location: San Jose, CA
Posted Aug 06, 2025
Experience Mith Al security platforms (e.g, Cisco AI Defense console), cloud environments, telemetry tools, and collaboration platforms like AI Canvas.
Plumber
Company: EJ Home Services
Location: Santa Clara, CA
Posted Aug 06, 2025
Daily tasks include the technical aspects of the job, collecting payments, giving accurate and detailed information about each home and situation, and…
Registered Nurse II, Cardiology
Company: Sutter Health
Location: Santa Clara, CA
Posted Aug 06, 2025
Working knowledge of the healthcare industry, safety precaution policies, best practices regarding patient care and privacy, and changes in local/state/federal…
Security Guard Officer 16 Hrs Part Time- LOS ANGELES
Company: World Private Security Inc
Location: Los Angeles, CA
Posted Aug 06, 2025
The actual jobsite will be for a non profit organization where the security officer will be directing clients to their appointments. Pay: From $17.50 per hour.
Executive Chef
Company: Troon
Location: Pasadena, CA
Posted Aug 06, 2025
Supervises food preparation, cost quality, quantity inventories, portion control menu planning, recipes and testing of samples submitted by purchasing…
Program Manager, Developer Partner Marketing
Company: NVIDIA
Location: Santa Clara, CA
Posted Aug 06, 2025
Bachelor's degree in a technical field or equivalent experience. Foster and maintain strong, collaborative relationships with technical and marketing leads for…
Executive Chef
Company: Hyatt Centric Mountain View
Location: Mountain View, CA
Posted Aug 06, 2025
Ensure compliance with all policies and procedures that relate to F & B, as well as local, state and federal laws and regulations.
Health care marketing
Company: Pharmacy
Location: San Diego, CA
Posted Aug 06, 2025
*Job Summary* We are seeking a dedicated and detail-oriented Healthcare marketer to join our team. The ideal candidate will market to healthcare providers in…
Security Supervisor - Field Support
Company: GardaWorld Security Services US (IHE)
Location: Studio City, CA
Posted Aug 06, 2025
You have a state security license (BSIS Guard Card) and additional 32hr BSIS security trainings (Additional security trainings can be obtained during the hiring…
Registered Nurse - School Nursing
Company: Ro Health, LLC
Location: San Jose, CA
Posted Aug 06, 2025
Monitor and manage immunization records to ensure compliance with state regulations. Develop and implement emergency response plans and drills.
CNC Operator -1st Shift
Company: 5TH Axis Inc
Location: San Diego, CA
Posted Aug 06, 2025
Reliability and ability to listen and follow instruction. 401K with up to 4% matching. Ability to read blueprints and highly proficient at dimensioning/…
Senior Tax Accountant
Company: Transition Staffing Group
Location: San Diego, CA
Posted Aug 06, 2025
Analyze financial data including balance sheets and income statements. Communicate with clients and team members to ensure accurate and timely deliverables.