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Engineering Assistant Jobs in Rialto, CA (NOW HIRING)

RimePro Inc

Estimator

Norco, CA · On-site

$90K - $120K/yr

... engineering Assist with proposal and bid package preparation Maintain estimating spreadsheets and historical pricing Support handoff from estimating to project management Requirements 3+ years of ...

RimePro Inc

Project Engineer

San Dimas, CA · On-site

$80K - $110K/yr

They are seeking a Project Engineer / Assistant Project Manager to support ongoing HVAC and plumbing construction projects from design through completion. This position is ideal for someone detail ...

Flex

Lead Electrical Test Technician

Fontana, CA

$29.86 - $41.06/hr

Reporting to the Electrical Engineering Assistant Manager the Lead Electrical Test Technician is responsible for leading a team of employees in completing electrical testing of manufactured projects.

Flex Ltd

Lead Electrical Test Technician

Fontana, CA · On-site

$29.86 - $41.06/hr

Reporting to the Electrical Engineering Assistant Manager the Lead Electrical Test Technician is responsible for leading a team of employees in completing electrical testing of manufactured projects.

Flex Ltd

Lead Electrical Test Technician

Fontana, CA

$29.86 - $41.06/hr

Reporting to the Electrical Engineering Assistant Manager the Lead Electrical Test Technician is responsible for leading a team of employees in completing electrical testing of manufactured projects.

OurStaff, LLC

Engineering Test Technician

Orange, CA

$24 - $26/hr

Ensure product meets order and functional specifications. * Assist in the maintenance and ... engineers, manager, and other technicians to ensure a high level of technical support. Should be a ...

Owens Corning

Engineering Technician

Corona, CA · On-site

The Engineering Technician supports engineering, testing, drafting, and fabrication activities by ... Develop CNC programs and assist with machining setup to support prototype and production ...

Owens Corning

Engineering Technician

Corona, CA · On-site

The Engineering Technician supports engineering, testing, drafting, and fabrication activities by ... Develop CNC programs and assist with machining setup to support prototype and production ...

Owens Corning

Engineering Technician

Corona, CA · On-site

Engineering Technician Location(s): Corona, CA, US, 92879 #job-location.job-location-inline ... Develop CNC programs and assist with machining setup to support prototype and production ...

U.S. Navy

ENGINEERING AIDE

Pomona, CA · On-site

RESPONSIBILITIES Engineering Aides directly assist Construction Engineers in developing final construction plans. They are responsible for performing the pre-construction prep work from blueprint ...

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All JobsEngineering JobsEngineering Assistant JobsEngineering Assistant Jobs in Rialto, CA

Engineering Assistant information

See Rialto, CA salary details

$13

$31

$57

How much do engineering assistant jobs pay per hour?

As of Jul 10, 2026, the average hourly pay for engineering assistant in Rialto, CA is $31.64, according to ZipRecruiter salary data. Most workers in this role earn between $20.24 and $38.08 per hour, depending on experience, location, and employer.

What are some common challenges Engineering Assistants face when supporting multiple projects simultaneously?

Engineering Assistants often juggle tasks across several projects, which can present challenges in prioritization and time management. Balancing administrative duties, technical support, and communication with different teams requires strong organizational skills and adaptability. Proactively coordinating with project managers and regularly updating task lists can help manage workloads more effectively and ensure deadlines are met. Developing familiarity with project management software and open communication channels are also key to thriving in this dynamic environment.

How much is the salary of an assistant engineer?

The salary of an engineering assistant varies depending on experience, location, and industry, but typically ranges from $40,000 to $60,000 per year. Entry-level positions may start lower, while experienced assistants with specialized skills can earn higher wages. Certifications and familiarity with engineering software can also influence compensation.

What is the difference between Engineering Assistant vs Engineering Technician?

AspectEngineering AssistantEngineering Technician
Required CredentialsAssociate degree or relevant certificationAssociate degree or technical diploma
Work EnvironmentOffice, field, or lab settingsLaboratory, field, or manufacturing environments
Employer & Industry UsageCommon in engineering firms, construction, and manufacturingOften in manufacturing, research, and technical services
Common Search & ComparisonYesYes

Engineering Assistants typically support engineering projects through administrative tasks, data collection, and basic technical work, often working in office or field settings. Engineering Technicians focus more on hands-on technical tasks, testing, and maintaining equipment. Both roles require similar educational backgrounds but differ in daily responsibilities and work environments.

What Is the Job Description of an Engineering Assistant?

An engineering assistant provides support to the engineering team on a variety of projects. As an engineering assistant, your job duties include spec reading, research, conducting tests, modifying techniques, and resolving issues. Additional responsibilities as an engineering assistant are to help project engineers design, develop, evaluate, and troubleshoot to accomplish project goals. You work as part of a team in a lab or workshop environment, so a commitment to safety and compliance with regulations is important. Communication skills are also a must for this career.

What engineers make $500,000 a year?

Highly experienced engineers in specialized fields such as petroleum engineering, aerospace engineering, or software engineering with executive or senior roles can earn $500,000 or more annually. These positions often require advanced skills, certifications, and leadership responsibilities, and compensation may include bonuses and stock options.

What is an engineering assistant?

An engineering assistant is a professional who supports engineers by performing tasks such as data collection, drafting, testing, and project documentation. They often use tools like CAD software and may need technical certifications or training to perform their duties effectively.

What are the key skills and qualifications needed to thrive as an Engineering Assistant, and why are they important?

To thrive as an Engineering Assistant, you need a solid background in engineering principles, technical drawing, and data analysis, usually supported by an associate degree or equivalent technical training. Familiarity with CAD software, Microsoft Office Suite, and project management systems is commonly required. Strong organizational skills, attention to detail, and effective communication help you excel in supporting engineering teams and handling multiple tasks. These skills ensure accurate project documentation, efficient workflows, and seamless collaboration within engineering projects.

What does an assistant engineer work?

An assistant engineer supports senior engineers by performing technical tasks such as data collection, testing, and equipment maintenance. They often use tools like CAD software and may assist in project planning, ensuring safety standards and technical accuracy in engineering projects.

What are Engineering Assistants?

Engineering Assistants are professionals who support engineers and engineering teams by performing a variety of technical and administrative tasks. Their responsibilities often include preparing and reviewing drawings, conducting research, collecting and analyzing data, and assisting with project planning and documentation. They are essential in helping ensure engineering projects run smoothly and efficiently. Engineering Assistants typically work under the supervision of licensed engineers and may work in fields such as civil, mechanical, electrical, or industrial engineering.
More about Engineering Assistant jobs
What are the most commonly searched types of Engineering jobs in Rialto, CA? The most popular types of Engineering jobs in Rialto, CA are:
What are popular job titles related to Engineering Assistant jobs in Rialto, CA? For Engineering Assistant jobs in Rialto, CA, the most frequently searched job titles are:
What job categories do people searching Engineering Assistant jobs in Rialto, CA look for? The top searched job categories for Engineering Assistant jobs in Rialto, CA are:
What cities near Rialto, CA are hiring for Engineering Assistant jobs? Cities near Rialto, CA with the most Engineering Assistant job openings:
Engineering Assistant jobs near you
Infographic showing various Engineering Assistant job openings in Rialto, CA as of July 2026, with employment types broken down into 1% As Needed, 73% Full Time, 23% Part Time, 1% Temporary, and 2% Contract. Highlights an 99% Physical, and 1% Remote job distribution, with an average salary of $65,806 per year, or $31.6 per hour.

Estimator

RimePro Inc

Norco, CA • On-site

$90K - $120K/yr

Full-time

Medical, Dental, Vision, Retirement, PTO

Re-posted 13 days ago

Job description

Summary

A growing mechanical contractor is looking to add a Plumbing Estimator to support multifamily and commercial construction projects. This role focuses on pricing plumbing scopes for ground-up and renovation work and working closely with leadership and operations during preconstruction.

This is a good fit for someone who understands plumbing systems, can read drawings well, and is comfortable handling multiple bids at once.

Responsibilities

Prepare plumbing estimates for multifamily and commercial projects

Perform material and labor takeoffs from plans and specifications

Review drawings, specs, and addenda to confirm full scope

Request and review vendor and supplier pricing

Work with leadership on bid strategy and value engineering

Assist with proposal and bid package preparation

Maintain estimating spreadsheets and historical pricing

Support handoff from estimating to project management

Requirements

3+ years of plumbing estimating experience

Background in multifamily or commercial construction

Strong understanding of plumbing systems and labor production

Comfortable reading plans and specifications

Experience with takeoff software and Excel

Organized and able to manage multiple bids

Clear communicator and team player

Compensation & Benefits

Salary based on experience

Bonus potential

Medical, dental, and vision insurance

401(k) with company match

PTO and paid holidays

Stable workload and long-term growth opportunity