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Sustaining Test Engineer Jobs in California (NOW HIRING)

This role plays a pivotal part in ensuring product reliability, performance, and security across the full engineering lifecycle from concept to sustainment. Job Responsibilities: * Ensuring test ...

Senior Test Engineer

Santa Clara, CA · On-site

$126K - $189K/yr

THE ROLE As a Senior Test Engineer, you will own the critical intersection of test engineering and ... You will safeguard the quality of the Everpure Platform by developing, deploying, and sustaining ...

Bachelor's degree in Electrical/Electronics, Computer, Mechanical Engineering, or related fields * 5+ years of relevant industry experience with emphasis on manufacturing test and product sustainment.

This role plays a pivotal part in ensuring product reliability, performance, and security across the full engineering lifecycle from concept to sustainment. Job Responsibilities: * Ensuring test ...

Product Test Engineer

Costa Mesa, CA · On-site

$100K - $160K/yr

A strong Product Test Engineer will need to have a proven track record of performing root cause analysis on field or manufacturing defect failures with a background in integration and sustainment.

Overview Test Engineer/Operations Specialist LOCATION: San Diego CA JOB STATUS: Full-time CLEARANCE ... USV Operations and Sustainment program supporting Astrion Navy Division.    REQUIRED ...

Showing results 41-60

Sustaining Test Engineer information

What is the difference between Sustaining Test Engineer vs Test Engineer?

AspectSustaining Test EngineerTest Engineer
ResponsibilitiesMaintains and supports existing products, troubleshooting issues, and ensuring quality over product lifecycle.Designs and develops new testing procedures, performs initial testing, and validates new products.
Work EnvironmentPrimarily in production and support settings, focusing on product reliability.Mostly in R&D or development labs, focusing on new product development.
CredentialsTypically requires a degree in engineering or related field, often with certifications in testing or quality.Requires similar credentials, often with additional emphasis on design and development skills.

While both roles require engineering knowledge and testing skills, a Sustaining Test Engineer focuses on maintaining and supporting existing products, whereas a Test Engineer is more involved in developing and validating new products. Understanding these differences helps in choosing the right career path or job focus.

Are sustaining test engineers in demand?

Sustaining test engineers are in steady demand across industries such as aerospace, automotive, and electronics, where ongoing product support and quality assurance are essential. They typically require skills in testing methodologies, troubleshooting, and familiarity with tools like test automation software, making their role critical for maintaining product reliability and compliance.

How much does a sustaining test engineer get paid?

Sustaining test engineers typically earn between $70,000 and $100,000 annually, depending on experience, location, and industry. Salaries may increase with certifications, specialized skills, and years of experience in testing and quality assurance environments.

What do sustaining test engineers do?

Sustaining test engineers are responsible for maintaining, troubleshooting, and improving existing products through testing and analysis. They develop test procedures, analyze test data, and collaborate with design teams to resolve issues, often using tools like test automation software and diagnostic equipment. Their work ensures product reliability and quality throughout its lifecycle.

What are popular job titles related to Sustaining Test Engineer jobs in California?

For Sustaining Test Engineer jobs in California, the most frequently searched job titles are:

What job categories do people searching Sustaining Test Engineer jobs in California look for?

The top searched job categories for Sustaining Test Engineer jobs in California are:

What cities in California are hiring for Sustaining Test Engineer jobs?

Cities in California with the most Sustaining Test Engineer job openings:

Infographic showing various Sustaining Test Engineer job openings in California as of September 2026, with employment types broken down into 1% As Needed, 82% Full Time, 14% Part Time, 2% Contract, and 1% Nights. Highlights an 90% Physical, 1% Hybrid, and 9% Remote job distribution.

Test Engineer III

Torrance, CA

Full-time

Re-posted 21 days ago


Mercury Systems rating

8.2

Company rating: 8.2 out of 10

Based on 15 frontline employees who took The Breakroom Quiz


Job description

Job Summary:

Mercury Systems is seeking a Test Engineer III to lead test efforts in our data processing and avionics systems for mission critical aerospace and defense applications.This role plays a pivotal part in ensuring product reliability, performance, and security across the full engineering lifecycle from concept to sustainment.

Job Responsibilities:

  • Ensuring test systems comply with quality requirements, reliability, and regulatory compliance
  • Work with cross-functional development teams to ensure that products are designed to facilitate testability including qualification, verification and validation requirements
  • Develop, specify and/or procure test equipment that meets quality objectives, design margins and the needs of manufacturing
  • Develop and write test documentation such as compliance matrices; Acceptance Test Procedures (ATP), Qualification Test Procedures (QTP), and Functional Test Procedures (FTP) using test standards such as MIL-STD-810G & H, MIL-STD-704A, and MIL-STD-461F & G
  • Oversee and conduct functional, environmental, stress, and security testing of hardware and software systems, ensuring performance in extreme conditions and mission-critical environments.
  • Work independently under minimal supervision and guidance to perform tasks of substantial complexity and conduct testing activities on site and at testing contract facilities
  • Produce test reports, presentation, and CDRL's for contractual deliverables
  • Train/cross-train test and troubleshooting techniques with Production test team
  • Troubleshoot systems and circuit card assemblies using relevant electrical, mechanical, and analytical tools to identify root cause and resolve technical issues.
  • Lead the troubleshooting activities, Investigate the cause of the failures and fix the defect at top level assembly, sub-level assembly, PCBA board level, components, and or test equipment
  • Collaborate with Mission Assurance teams to conduct root cause analyses for issues identified during testing and sustainment.

Required Qualifications:

  • Typically requires a bachelor's degree in electrical engineering, computer science, manufacturing engineering or equivalent experience
  • Typically requires 4+ years of experience testing electrical hardware or other military based systems
  • Experience with mixed-signal Printed Circuit Board Assembly (PCBA) and system validation test development
  • Experience in developing and executing verification and validation test procedures.
  • Experience testing ruggedized servers for harsh environments (e.g., extreme temperatures, shock, vibration).
  • Ability to read and understand circuit and wiring diagrams, technical specifications and electronics test procedures
  • Good understanding of manufacturing processes with the ability to work on multiple projects in a highly demanding environment
  • Experience understanding system and subsystem requirements & specification generation processes
  • Knowledge of a wide variety of electronics test and analyzing equipment including oscilloscopes, analyzers, power supplies, meters and any other special electronics test equipment necessary for testing, analyzing and/or troubleshooting/repairing
  • Experience understanding engineering principles and demonstrated application of those concepts with a focus on safety and regulatory compliance.
  • Experience in LabVIEW, Python, Bash, C#,C++, MATLAB, or other programming languages used for data collection and analysis.
  • This role is100% on-site and based inTorrance,CA.

Preferred Qualifications:

  • Active U.S. Secret Clearance.
  • Experience with military standards such as MIL-STD-810, MIL-STD-461, and MIL-STD-1275.
  • Experience with Aerospace, Defense, Government, or Military sectors.
  • Skilled in documentation and collaboration platforms, including Confluence and SharePoint.
  • Experience with engineering lifecycle tools such as Jama, Jira, BitBucket.
  • Demonstrated leadership experience with the ability to guide Integrated Product Teams (IPTs) through ambiguity and tight deadlines.
  • Experience supporting both military and commercial programs.
  • Working knowledge of military and aerospace standards including MIL-STD-810, MIL-STD-461, DO-178C, and DO-254.
  • Hands on experience with environmental test equipment, including chambers used for hardware validation.

#LI-RL1

This position requires you to haveor obtaina government security clearance. Security clearances may only be granted toU.S. citizens.

Why should you join Mercury Systems?

Mercury Systems is a technology company that makes the world a safer, more secure place. We push processing power to the tactical edge, making the latest commercial technologies profoundly more accessible for today's most challenging aerospace and defense missions. From silicon to system scale, Mercury enables customers to accelerate innovation and turn data into decision superiority. Headquartered in Andover, Massachusetts, Mercury employs more than 2,300 people in 24 locations worldwide. To learn more, visit mrcy.com

Our Culture

We are committed to making Mercury a great place to work, no matter where our employees are located. We offer a casual and enjoyable atmosphere that allows employees to learn and grow. We help and care for one another and work as one to achieve results for us and for our customers. We value communication and transparency, and strive to foster two-way dialogue at all levels of the organization. We are committed to lifelong learning, offering comprehensive skills training and tuition reimbursement. Whether you're just starting out on your career journey or you are an experienced professional, it's important to us that you feel recognized and rewarded for your contributions.

To find out more aboutWhy Mercury?, or visit the Mercury Community or find answers to general questions at Mercury FAQs

Mercury Systems is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, age, sex (including pregnancy), sexual orientation, gender identity, national origin, genetic information, creed, citizenship, disability, protected veteran or marital status.

As an equal opportunity employer, Mercury Systems is committed to a diverse workforce. In order to ensure reasonable accommodation for individuals protected by Section 503 of the Rehabilitation Act of 1973, the Vietnam Veterans' Readjustment Act of 1974, and Title I of the Americans with Disabilities Act of 1990, applicants that require accommodation in the job application process may contact the number below for assistance.

(978) 256-1300

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