421 Onsite Supervisor jobs in Ontario,CA

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Construction Procurement Staff — ADU Express

ADU EXPRESS

Gardena, CA 90247

$85,000/yr

~ 57 min OnsiteUrgently Hiring

Proven ability to read construction drawings and produce accurate material take-offs and quantity estimates
Strong negotiation skills with a track record of reducing procurement costs
Comfortable managing multiple purchase orders, vendor accounts, and delivery schedules simultaneously
Proficiency with procurement or estimating software (e.g., PlanSwift, Bluebeam, or similar)
Valid driver's license and reliable transportation for occasional site and vendor visits

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Site Supervisor - Residential Community

Securitas

Placentia, CA 92870

~ 34 min OnsiteHealth InsurancePaid Time OffRetirement Benefit

High School Diploma or G.E.D. and 2 years of related experience, or an an equivalent combination of education and experience sufficient to perform the essential functions of the job, as determined by the company.
May be required to hold and continue to meet the requirements for any applicable state, county and municipal license for Security Officers.
Must undergo and meet company standards for background and reference checks, controlled substance testing, and behavioral selection survey, in addition to any mandatory licensing requirements.
Frequent lifting and/or moving up to 10 pounds and occasionally up to 25 pounds.
Seeing, hearing, speaking and writing clearly in order to communicate with employees and clients, observe and report incidents, and direct others.
Regular use of vehicle for the performance of duties.
Occasional reaching with hands and arms, stooping, kneeling, crouching and crawling.
May be required to work overtime without advance notice.

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Bilingual Customer Service Representative - Spanish-English

TTEC Holdings, Inc. (Teletech Holding Corp)

Irvine, CA 92620

$20.71/hr

~ 44 min OnsiteUrgently HiringBilingual PreferredEducation AssistancePaid Time Off

6 months of customer service experience
High school diploma or equivalent
Great written and verbal communication skills in Spanish-English
Computer experience
This position requires that you reside within 50 miles of Irvine, CA

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Inside Sales / Account Manager

National Equipment & Service Corporation

Irvine, CA 92620

~ 44 min OnsiteHealth InsurancePaid Time OffRetirement Benefit

Bachelor's degree strongly preferred; equivalent professional experience in account management or customer success will be considered.
3+ years of experience in account management, customer success, or a related client-facing role in a B2B industrial/commercial field service industry ideally in businesses such as HVAC, electrical, plumbing, fire protection, facilities management, etc.
Demonstrated ability to manage a portfolio of complex, high-value customer relationships simultaneously.
Proficiency with CRM platforms and field service management software (ServiceTitan strongly preferred).
Strong proficiency with Mac/Apple ecosystem and modern SaaS tools.
Familiarity with AI tools and large language models (LLMs) and a willingness to integrate them into daily workflows for communication, research, and account management tasks.
Excellent written and verbal communication skills - able to communicate effectively with warehouse managers, facility directors, and C-level stakeholders.
Proven ability to manage multiple priorities and maintain attention to detail under time pressure.
Valid driver's license and reliable transportation (occasional customer site visits required).

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19D Cavalry Scout

National Guard OMD

Azusa, CA 91702

~ 26 min OnsiteEducation AssistanceHealth InsuranceRetirement Benefit

Military enlistment in the Army National Guard
Must be at least a junior in high school, or have a high school diploma or a GED certificate
Must be between the ages of 17 and 35
Must be able to pass a physical exam and meet legal and moral standards
Must meet citizenship requirements

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Supervisor, Multi Tenant Sales (Bilingual Spanish)

Spectrum

Riverside, CA 92504

~ 29 min OnsiteBilingual Preferred

Required Qualifications
Education
Bachelor's degree or equivalent work experience
Experience
1+ years of sales experience
Skills
Knowledge of community sales practices
Valid driver's license with satisfactory driving record and auto insurance
This role requires the ability to work lawfully in the U.S. without employment-based immigration sponsorship, now or in the future.

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(12849)1st Shift Plant Maintenance Superintendent-Cudahy

Adecco

Bell Gardens, CA 90201

$87,000-$130,000/yr

~ 47 min OnsiteHealth InsuranceRetirement Benefit

Bachelor's degree with 3+ years of relevant experience, or equivalent combination of education and experience
Experience leading maintenance teams or supervisors in a manufacturing environment
Strong mechanical and electrical knowledge including PLCs, instrumentation, and industrial equipment
Hands-on experience with preventive and predictive maintenance programs
Working knowledge of TPM, RCM, and work order management systems
Proficiency with CMMS systems, SAP PM preferred
Ability to work flexible hours, including occasional weekends

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