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Freelance Lab Test Engineer Jobs in Rialto, CA (NOW HIRING)

Work with HW/SW development teams in the lab and in the field to identify and resolve connectivity ... test methods We prefer: * Comfortable with working on hardware and supporting engineering in ...

Test Lab Technician I

Brea, CA · On-site

$25 - $30/hr

The Test Lab Technician I, under limited supervision, performs a variety of tasks in the System ... Interpret, create, and update engineering drawings for cables and system layouts * Create wiring ...

Test Lab Technician I

Brea, CA · On-site

$25 - $30/hr

The Test Lab Technician I, under limited supervision, performs a variety of tasks in the System ... Interpret, create, and update engineering drawings for cables and system layouts * Create wiring ...

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Freelance Lab Test Engineer information

See Rialto, CA salary details

$17

$48

$72

How much do freelance lab test engineer jobs pay per hour?

As of May 29, 2026, the average hourly pay for freelance lab test engineer in Rialto, CA is $48.05, according to ZipRecruiter salary data. Most workers in this role earn between $36.88 and $60.24 per hour, depending on experience, location, and employer.

What is the difference between Freelance Lab Test Engineer vs Quality Control Technician?

AspectFreelance Lab Test EngineerQuality Control Technician
CredentialsRelevant certifications (e.g., ISO, ASTM), technical degreesTechnical diploma or associate degree, certifications optional
Work EnvironmentFreelance projects, laboratories, client sitesIn-house labs, manufacturing facilities, testing labs
Employer & IndustryIndependent contractors, consulting firms, various industriesManufacturers, quality departments, industrial sectors

Freelance Lab Test Engineers and Quality Control Technicians both work in laboratory settings and require technical certifications. However, Freelance Lab Test Engineers typically operate independently on diverse projects, while Quality Control Technicians are employed full-time within organizations to ensure product quality. The choice depends on whether you prefer freelance flexibility or a stable in-house role.

What are popular job titles related to Freelance Lab Test Engineer jobs in Rialto, CA? For Freelance Lab Test Engineer jobs in Rialto, CA, the most frequently searched job titles are:
What job categories do people searching Freelance Lab Test Engineer jobs in Rialto, CA look for? The top searched job categories for Freelance Lab Test Engineer jobs in Rialto, CA are:
What cities near Rialto, CA are hiring for Freelance Lab Test Engineer jobs? Cities near Rialto, CA with the most Freelance Lab Test Engineer job openings:
Test Engineer - Secret Clearance Required

Test Engineer - Secret Clearance Required

AMERICAN SYSTEMS

March Air Reserve Base, CA

$93.90K - $156.80K/yr

Full-time

Medical, Retirement, PTO

Posted 15 days ago


Job description

The Test Engineer supports the U.S. Customs and Border Protection (CBP) Air and Marine Operations Center (AMOC) by ensuring that all Command, Control, Communications, Computers, and Intelligence (C4I) systems are fully tested, validated, and mission-ready prior to deployment into the operational baseline.

This role is critical to minimizing operational risk by validating software, hardware, network, and sensor integrations within government and contractor-supported test and development facilities, prior to operational release.


  • Test & Development Facility Support
    • Support Test and Development activities as defined in the SOW.
    • Perform integration, system, regression, and acceptance testing of AMOSS, ISR Systems, telecommunications, and ancillary C4I systems.
    • Ensure new projects, system upgrades, patches, and enhancements are fully tested before connection to operational systems.
    Software & Hardware Testing
    • Test and evaluate:
      • AMOSS and WebAMOSS software
      • ISR Systems applications and databases
      • C4I supporting services, operating systems, and network configurations
    • Validate compliance with:
      • DHS and CBP security requirements
      • Configuration Management baselines
      • Approved Change Requests (CRs)
    Engineering & Integration Support
    • Support Engineering & Integration (E&I) teams during:
      • System upgrades
      • New sensor or data feed integrations
      • Expansion or reconfiguration efforts
    • Assist in debugging new, modified, or existing systems in lab environments.
    Test Documentation & Reporting
    • Develop and support required test documentation including:
      • Systems Acceptance Test Plans (SATP)
      • Installation Plans (IP)
      • Software Version Description Documents (SVDD)
    • Document test results, defects, and remediation actions.
    • Support audits, inspections, and readiness reviews.

  • U.S. Citizen
  • Secret Clearance Required
  • Bachelor's degree and 5-7 years of related work experience
  • Minimum 3–5 years of experience in:
    • System testing, integration testing, or lab engineering
    • Testing complex IT, C4I, or mission-critical systems
  • Experience testing with Linux-based systems, Networked systems and client/server architectures, Hardware and software integrations
  • Familiarity with:Test plans, procedures, and defect tracking, Configuration management processes
  • Working knowledge of: Linux/UNIX environments, Networking concepts and protocols, Databases (Oracle, PostgreSQL, or similar)
    •  
  • Experience with: Virtualized environments, Test automation tools or scripting (preferred), Issue tracking systems (e.g., Jira), Technical Skills
Preferred Qualifications
  • Experience supporting federal, DHS, CBP, DoD, or law enforcement systems
  • Familiarity with: AMOSS, ISR systems, or radar/sensor-based systems, Agile development and testing methodologies

AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $93,900.00/Yr. - USD $156,800.00/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.
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