Tech Jobs in Ontario, CA
172,782 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.
Mobile Patrol Armed Security Officers Needed
Company: Proactive Protection Agency
Location: Morgan Hill, CA
Posted Aug 15, 2025
Submitting daily reports to the field supervisor. _Access Control:_ Manage the admittance process to the client site and facility, monitoring entrances and…
ARMED SECURITY NEEDED IN THE SAN FERNANDO VALLEY
Company: Special Unit Security
Location: Sun Valley, CA
Posted Aug 15, 2025
ARMED SECURITY OFFICERS NEEDED FOR IMMEDIATE FULL TIME EMPLOYMENT IN THE SAN FERNANDO VALLEY DIFFERENT SHIFTS AVAILABLE. Sun Valley, CA 91352 (Required).
Area Service Representative
Company: Premier Residential Services, LLC
Location: Rancho Santa Fe, CA
Posted Aug 15, 2025
Answer incoming calls and assist clients, and/or distribute phone calls as necessary to appropriate departments. Quality home inspections and supervision.
SECURITY GUARD I
Company: North East Medical Services
Location: San Jose, CA
Posted Aug 15, 2025
Greet and welcome incoming/outgoing patients in addition to providing basic information for site i.e. directions. This is not an OSHA high-risk position.
RN
Company: San Diego Surgical Arts
Location: San Diego, CA
Posted Aug 15, 2025
Educational Background: Must be a licensed Registered Nurse (RN) with Basic Life Support (BLS) certification. Regulatory Compliance: Maintain lab and adhere to…
Executive Sous Chef
Company: La Valle Coastal Club & Resort
Location: Rancho Santa Fe, CA
Posted Aug 15, 2025
Work closely with the Executive Chef to manage, develop, train, and inspire the culinary team. Proficient with POS, Microsoft Office products, and social media.
Accounting Associate
Company: Alpha EMS Corporation
Location: Fremont, CA
Posted Aug 15, 2025
Bachelor’s degree in accounting, Business, Finance, Computer Science/Systems, or a related field; or an associate degree plus 1+ year of Accounts Receivable or…
CNC and Conventional Machinist (7 YEARS EXP)
Company: Wilcox Machine Company
Location: Bell Gardens, CA
Posted Aug 15, 2025
Read and interpret engineering drawings, blueprints, and specifications. Ability to read and interpret blueprints and engineering drawings.
Journeyman Electrician
Company: RedBalloon LLC
Location: El Cajon, CA
Posted Aug 15, 2025
Valid driver's license with clean driving record. The ideal candidate will have extensive expertise in panel upgrades, circuit installation, and electrical…
Construction Sales/Project Manager
Company: Barrett Business Services
Location: El Cajon, CA
Posted Aug 15, 2025
Resolve field issues as they arise by coordinating solutions between crews, vendors, and clients. Autonomy to manage your own schedule and territory.
JANITOR I
Company: North East Medical Services
Location: San Jose, CA
Posted Aug 15, 2025
Cleans, sweeps, dusts, mops, washes, vacuums, polishes, and waxes floors. This is not an OSHA high-risk position. Assist training staff as needed.
Project Manager, Executive Support
Company: Confidential Investment Company
Location: Santa Monica, CA
Posted Aug 15, 2025
Implement Scrum and Agile methodologies across the Executive Support department to develop project plans, managing from inception to completion; encompassing…