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Tester Performance Testing Jobs in California (NOW HIRING)

Delta Star, Inc.

Tester B DSW

San Carlos, CA · On-site

$33.44 - $34.09/hr

A Day in the Life In this role, you'll follow detailed test procedures, wiring schematics, and technical drawings to conduct functional and performance testing. You'll document quality control ...

Johnson Controls

Certified Regulation 4 Tester

Cypress, CA · On-site

$30.01 - $45.09/hr

... the performance of buildings to serve people, places and the planet. Join a winning team that ... What you will do Inspectors are responsible for conducting routine inspections, testing, service ...

New

Procom Services

QA Tester

San Francisco, CA · On-site

Knowledge of performance testing, application tuning and load testing * Knowledge of MongoDB & Casandra Database a plus * Excellent written and verbal communication skills Education * BS/MS in ...

CYNET SYSTEMS

Device Power Tester

Mountain View, CA · On-site

$35 - $40/hr

Testing power consumption on different smart watch products. * Identifying power consumption, within the agreed upon timeline(s), on each power rail such as LTE, BT, WiFi, AP in different ...

CoreWeave

GPU Performance Engineer

Sunnyvale, CA · On-site

Responsibilities : • Implement and maintain solutions to problems of scale for testing and validation of CoreWeave's global infrastructure • Develop and improve performance tests and automation ...

Broadcom

AI Systems Performance Engineer

San Jose, CA · On-site

Design, develop, and implement robust performance testing frameworks and automation tools to streamline continuous benchmarking. • Cross-Functional Collaboration: Document test methodologies ...

Red Bull

Performance Science Manager

Santa Monica, CA · On-site

$85K - $128K/yr

Execute athlete testing and monitoring across biomechanics, physiology, strength/power, movement ... PERFORMANCE SCIENCE INTEGRATION Embed performance testing, monitoring, and feedback directly into ...

ALO

Engineering Manager, Performance

San Ramon, CA

$188K - $235K/yr

Guide performance engineering practices for web and mobile , including load, stress, endurance, and real-user performance testing. * Drive frontend and backend performance improvements , supporting ...

CoreWeave

GPU Performance Engineer

Sunnyvale, CA · On-site

$120K - $160K/yr

Implement and maintain solutions to problems of scale for testing and validation of CoreWeave's global infrastructure * Develop and improve performance tests and automation workflows to expand ...

Redolent, Inc.

QA Testing Engineer

Sunnyvale, CA · On-site

This includes functional automation, performance testing, technical test automation and system administration duties for the team?s test tools. This person will participate in the development of test ...

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Tester Performance Testing information

What are some typical challenges faced by tester performance testing professionals, and how can they be addressed?

Tester Performance Testing professionals often encounter challenges such as accurately simulating real user behavior under load, identifying performance bottlenecks in complex systems, and ensuring that test environments closely mirror production. Addressing these issues requires a strong understanding of both the application architecture and the tools used for performance testing. Collaboration with developers and infrastructure teams is essential to troubleshoot issues and fine-tune both the application and the test setup for optimal results. Continuous learning and staying updated with the latest testing tools and methodologies also help in overcoming these challenges.

What is the difference between Tester Performance Testing vs Tester Automation Testing?

AspectTester Performance TestingTester Automation Testing
Primary FocusEvaluating system performance under loadAutomating test cases to improve efficiency
Skills & CertificationsPerformance testing tools (e.g., JMeter), understanding of system architectureAutomation tools (e.g., Selenium), scripting skills
Work EnvironmentPerformance labs, testing environmentsDevelopment and testing environments
Industry UsageUsed across software, web, and mobile app testingCommon in agile teams for regression and functional testing

While both roles involve testing, Tester Performance Testing focuses on assessing system speed and stability under load, whereas Tester Automation Testing emphasizes creating automated test scripts to streamline testing processes. Both roles require technical skills but serve different testing objectives within the software development lifecycle.

What are the key skills and qualifications needed to thrive as a tester performance testing?

To thrive as a Tester in Performance Testing, you need a solid understanding of software testing principles, performance testing methodologies, and a relevant degree in computer science or a related field. Familiarity with tools such as JMeter, LoadRunner, or Gatling, along with experience using monitoring systems and scripting languages, is typically required. Strong analytical thinking, attention to detail, and effective communication skills help testers identify issues and collaborate with development teams. These competencies ensure accurate assessment of system performance, enabling organizations to deliver reliable, high-quality applications.

What is a tester performance testing?

Tester Performance Testing roles focus on evaluating how software applications perform under various conditions, including heavy user load, high data processing, and peak usage times. These testers design and execute tests to measure response times, stability, scalability, and resource usage of applications. Their work helps identify bottlenecks and performance issues before software is released, ensuring a smooth user experience. They use specialized tools and provide reports with recommendations for performance improvements.
What are popular job titles related to Tester Performance Testing jobs in California? For Tester Performance Testing jobs in California, the most frequently searched job titles are:
What job categories do people searching Tester Performance Testing jobs in California look for? The top searched job categories for Tester Performance Testing jobs in California are:
Tester Performance Testing jobs near you
Infographic showing various Tester Performance Testing job openings in California as of August 2026, with employment types broken down into 1% As Needed, 87% Full Time, 10% Part Time, and 2% Contract. Highlights an 83% Physical, 3% Hybrid, and 14% Remote job distribution.

Tester B DSW

Delta Star, Inc.

San Carlos, CA • On-site

$33.44 - $34.09/hr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 24 days ago

Job description

This is an exciting time to be joining Delta Star!
We are Delta Star! The largest, American-owned medium power transformer manufacturer in the United States and the premier manufacturer of mobile transformers and mobile power substations in North America.
We are an industry-leader that has harnessed the power of electricity to reliably connect you to an essential part of modern-day life. Giving you the peace of mind you deserve to go out and make the world a better place!
Summary
Delta Star Inc. is seeking a dedicated and detail-oriented Tester to support quality testing operations for our power and mobile transformers. If you have a foundation in electrical theory, hands-on troubleshooting skills, and a strong commitment to quality, this could be the next step in your career.
What You'll Do
As a Tester, you'll play a hands-on role in performing control circuit and transformer testing procedures to ensure product performance and compliance with specifications. You'll work with engineering documentation and testing instruments, contributing to the overall quality and reliability of our equipment.
A Day in the Life
In this role, you'll follow detailed test procedures, wiring schematics, and technical drawings to conduct functional and performance testing. You'll document quality control results, assist senior technicians with advanced testing, and help ensure that every transformer leaving the facility meets Delta Star's standards. You'll also participate in inspection activities and contribute to continuous improvement efforts.
Specific Duties
  • Recognize and complete all required Quality Control documentation accurately and in a timely manner.
  • Perform control functional tests on basic transformer control circuitry.
  • Conduct standard transformer tests including:
    • Turns ratio
    • Insulation resistance (megger)
    • Power factor (bushing and overall)
    • Dissipation factor
    • Phase relationship
    • CT ratio and polarity
    • 10kV excitation
    • Oil hipot
  • Assist with advanced testing procedures under the supervision of senior technicians, including:
    • Induced voltage with RIV/Partial Discharge
    • Impulse and heat run testing
    • Load and no-load losses
    • Sound level testing
    • Preventative auto testing
  • Use transformer diagnostic instruments and measurement systems with attention to calibration and accuracy.
  • Perform product inspections and report any non-conformances, material defects, or unusual conditions to the supervisor.
  • Participate in quality improvement initiatives and team training.

What We're Looking For
We're looking for a hands-on, quality-driven technician with a strong work ethic and a passion for learning. You should be comfortable working in a fast-paced manufacturing environment and eager to grow your technical skillset.
Position Requirements
  • High school diploma or equivalent required; technical training or coursework in electrical theory preferred.
  • Basic understanding of electrical theory and troubleshooting techniques.
  • Ability to read and interpret schematics, wiring diagrams, and technical documents.

Skills & Competencies
  • Experience using electrical measurement and diagnostic tools.
  • Strong attention to detail with the ability to follow complex procedures.
  • Ability to work both independently and as part of a team.
  • Excellent organizational and documentation skills.
  • Willingness to assist senior team members and take part in continuous training.

Why Join Us?
At Delta Star, you'll be part of a supportive and forward-thinking team that values professionalism, efficiency, and exceptional service. We offer a comprehensive benefits package to support you and your family, including medical, dental, vision, life, and disability insurance. We also provide a 401(k) plan with matching contributions, an Employee Stock Ownership Plan (ESOP), and a corporate bonus plan.
You'll enjoy paid time off, sick pay, floating holidays, and access to flexible spending accounts and consumer benefits. Additionally, we provide a benefit bank, a wellness center to support your health and well-being, and education assistance to help you grow in your career. At Delta Star, we're committed to helping you thrive both personally and professionally.
Pay Transparency
We are committed to fair and transparent pay practices. Compensation for this position will be determined within the posted salary range based on factors such as candidate qualifications, relevant experience, internal equity, market competitiveness, skills, and certifications. For union-represented roles, pay is established by the applicable collective bargaining agreement.
Other Duties
Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.
AAP/EEO Statement
Delta Star is an EEO/Affirmative Action Employer and does not discriminate on the basis of age, race, color, religion, gender, sexual orientation, gender identity, gender expression, national origin, protected veteran status, disability or any other legally protected status.

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