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Senior Performance Test Engineer Jobs in California

Senior Performance Engineer

San Francisco, CA · On-site

$123K - $169K/yr

Facilitating major site repairs and performance tests in accordance with production and capacity ... Senior Performance Engineer supports a larger operations team and serves as the subject matter ...

... Engineering. We are a fast-moving, data-driven group that prides itself on identifying performance ... Proficiency in Python or Java for utility creation, custom script development, and test automation ...

Senior Test Engineer shall manage and execute test programs, analyze and interpret results, and ... Lead the execution of vehicle and/or functional and performance test workstreams. (Define project ...

L2 - Test Engineer

Atwater, CA · On-site

$120K - $137K/yr

Senior Test Engineer shall manage and execute test programs, analyze and interpret results, and ... Lead the execution of vehicle and/or functional and performance test workstreams. (Define project ...

Required Skill and Experience • Experience in performance testing and performance engineering. • Experience in performance test strategy, test planning, and execution. • Experience in load ...

Experience in performance testing and performance engineering. * Experience in performance test strategy, test planning, and execution. * Experience in load, stress, endurance, and scalability ...

New

We are seeking a Senior LLM Systems Performance Engineer to build representative AI environments, characterize emerging workloads, and drive performance analysis for next‑generation AI platforms.

The role involves performing load tests to validate system performance, analyzing test results, and collaborating with developers to fix bugs. Responsibilities : • Perform load tests to validate ...

Senior Performance Engineer Location: San Jose, CA (On-site) Role Overview Astera Labs is a hyper ... Test Infrastructure & Automation * Design, build, and maintain automated lab infrastructure ...

Showing results 21-40

Senior Performance Test Engineer information

See California salary details

$67.6K

$117K

$166.3K

How much do senior performance test engineer jobs pay per year?

As of Sep 5, 2026, the average yearly pay for senior performance test engineer in California is $116,964.00, according to ZipRecruiter salary data. Most workers in this role earn between $96,200.00 and $134,700.00 per year, depending on experience, location, and employer.

What is a senior performance test engineer?

Senior Performance Test Engineers are specialized professionals responsible for designing, executing, and analyzing performance tests to ensure software applications meet required speed, scalability, and stability standards. They identify system bottlenecks, recommend improvements, and collaborate with development and operations teams to optimize application performance. With years of experience, they often lead performance testing strategies, mentor junior testers, and use advanced tools to simulate high-stress scenarios. Their work ensures that applications can handle expected user loads and perform reliably under various conditions.

What are the key skills and qualifications needed to thrive as a senior performance test engineer, and why are they important?

To thrive as a Senior Performance Test Engineer, you need advanced knowledge of software testing methodologies, scripting languages, and a degree in computer science or a related field. Expertise in tools like JMeter, LoadRunner, or Gatling and familiarity with CI/CD pipelines are typically required, along with relevant certifications such as ISTQB. Strong analytical thinking, problem-solving skills, and effective communication set top performers apart in this role. These skills and qualifications are vital to accurately assess system performance, identify bottlenecks, and ensure robust, scalable applications.

What are some common challenges faced by senior performance test engineers when working on large-scale applications?

Senior Performance Test Engineers often encounter challenges such as accurately simulating real-world user loads, identifying bottlenecks in complex, distributed environments, and ensuring test data and environments closely mirror production. Collaborating with development and operations teams to resolve performance issues can also be demanding, especially when root causes are not immediately apparent. Staying current with evolving tools and best practices is essential to effectively address these challenges and deliver reliable, high-performing applications.

What is the difference between Senior Performance Test Engineer vs Performance Test Engineer?

AspectSenior Performance Test EngineerPerformance Test Engineer
CertificationsISTQB, ISTQB Advanced, or similarISTQB, ISTQB Foundation, or similar
Work EnvironmentLead testing projects, mentor juniors, analyze complex performance issuesExecute performance tests, prepare reports, support test planning
ResponsibilitiesDesign test strategies, optimize performance, troubleshoot issuesDevelop test scripts, run tests, document results

The main difference between a Senior Performance Test Engineer and a Performance Test Engineer lies in experience, responsibilities, and leadership. Senior professionals typically lead testing efforts, mentor team members, and handle complex performance challenges, while Performance Test Engineers focus on executing tests and supporting the testing process. Both roles require similar certifications and work in comparable environments, but the senior role involves more strategic and leadership duties.

What cities in California are hiring for Senior Performance Test Engineer jobs?

Cities in California with the most Senior Performance Test Engineer job openings:

Infographic showing various Senior Performance Test Engineer job openings in California as of August 2026, with employment types broken down into 82% Full Time, 14% Part Time, and 4% Contract. Highlights an 81% Physical, 2% Hybrid, and 17% Remote job distribution, with an average salary of $116,964 per year, or $56.2 per hour.

Senior Performance Engineer

IPL (Indiana)

San Francisco, CA • On-site

$123K - $169K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 15 days ago


Key responsibilities

  • Analyze operational performance and trends of solar plus storage sites.

  • Investigate site performance remotely and review system design to identify root causes of lost energy.

  • Lead coordination with Operations and Engineering teams to share insights and inform maintenance priorities.


Job description

Are you ready to be part of a companythat'snot just talking about the future, but actively shaping it? Join The AES Corporation, the largest US-based global power company witha teamof 8,300employees across 12 countries.
AES has beenranked #1 byBloombergNEFin renewable energy sales to corporations in the US and Americas for five consecutive years, providing electricityformillions of peopleworldwide.
We are proud to foster a strong workplace culture, earning prominent positions in Great Place to Work rankings across the markets where weoperate. AES was also named one of the World's Most Ethical Companies for the 13th consecutive year in 2026, highlighting our dedication to integrity, transparency, and responsible business practices.

Our spirit of innovation continues to earn industry recognition. AES is the only seven-time winner of the Edison Electric Institute's Edison Awards in the twenty-first century, a distinction honoringglobal leadership in advancing the electric power industry.
Ifyou'reready to be part of a companythat'snot just adapting to change, but driving it, AES is the place for you.We'renot just building a more sustainable future,we'repowering it. Apply now and energize your career with a true leader inglobalenergy.


AES Clean Energy (CE) is seeking a Senior Performance Engineer to support the Hawaii O&M Engineering team by analyzing the performance characteristics of its rapidly growing portfolio of photovoltaic and battery storage projects (including DC-coupled and AC-coupled architectures) with microgrid functionality on the islands. The role directly supports projects that provide grid-forming operation, black-start capability, frequency/voltage regulation, and more. This individual will play a pivotal role in ensuring that AES CE operates and maintains the portfolio to standards that exceed industry best-practice. The ideal candidate will be a self-starter and have the experience, ability, and interest in implementing programs and processes that will assure our operating practices achieve reliable, safe, and optimal generation.

At AES, we raise the quality of life around the world by changing the way energy works. Everyone makes an impact every day in our small, global teams. Apply here to start an extraordinary career today.

AES's mission is to improve lives by accelerating a safer and greener energy future. We are a global, agile, cohesive organization with an employee engagement level akin to a startup company. AES businesses throughout the world are often recognized as great places to work. Our people share a passion to help meet the world's current and increasing energy needs, while providing communities and countries the opportunity for economic growth due to the availability of reliable, affordable electric power.

A day in the life of a Hawaii-based AES CE Senior Performance Engineer will include, but is not limited to:

Analyzing operational performance and trends of solar plus storage sites. Remotely investigating site performance and reviewing system design to investigate lost energy root causes. Leading coordination with Operations and Engineering teams to share insights of portfolio performance to inform maintenance priorities. Facilitating major site repairs and performance tests in accordance with production and capacity commitments. Investigating performance of microgrid functionality, including grid-forming and islanding testing and operations. Development of system models that represent the facility performance and functionality

The Senior Performance Engineer supports a larger operations team and serves as the subject matter expert for technical and engineering matters related to the overall performance of photovoltaic plants and grid-scale battery storage systems. Excellent communication, task management, and planning skills needed, in addition to technical breadth.

While performance analysis is the primary qualification, the role will require the review of information related to all practical elements of photovoltaic and battery system design. The successful applicant, while not an expert, will be comfortable with high-level review of all elements of practical system design.

The position may include up to 10-15% travel to project locations and partner offices.

Key Responsibilities

Operations

  • Lead the transition from projects under construction to operating assets
  • Troubleshoot systems in operation and review system performance data to identify performance problems
  • Perform or review capacity, microgrid/islanding and performance ratio tests for projects in operation
  • Review production estimates and meteorological data sources for accuracy by comparing to operational data
  • Measure fleet performance against established KPI metrics and compare actual to forecasted performance
  • Produce monthly/quarterly/annual performance reports, inclusive of a detailed variance analysis.
  • Seek and evaluate proposals for analysis services and consultants where needed
  • Lead coordination of grid event analysis and impact to performance of on-site equipment
  • Analyze high-speed performance data to evaluate grid support compliance
  • Perform Job Safety Assessments and Safety Walks to identify job-site hazards

Collaboration

  • Collaborate with Operations and Engineering teams to identify underperformance and recommend improvements
  • Lead coordination of performance related Root-Cause Analyses
  • "Close the loop" between Operations and Engineering by recording and communicating issues that can be mitigated through better design
  • Utilize technology such as drones, thermal imaging and advanced analytics to reduce field labor and improve operational performance

Growth and Leadership

  • Participate in AES CE's growth planning process by contributing to process improvement task forces and other strategic planning activities
  • Improve and develop processes for the execution of safe, quality and high-performance projects
  • Serves as a technical Subject Matter Expert in Microgrids, DC-coupled PV+BESS systems and overall system performance
  • Educate team on changing trends in technology, best practices and safety
Skills and Qualifications

Primary Qualifications

  • Undergraduate degree in Engineering or equivalent technical field
  • 5+ Years of professional experience in engineering with focus on measuring and maintaining system performance
  • Strong understanding of industry trends in production tools and processes
  • Proficiency with advanced analysis and database tools for development of metrics and dashboards
  • Ability to work effectively with Microsoft software programs, including but not limited to Excel, Outlook, Word, and PowerPoint
  • Demonstrated ability to read and comprehend equipment/facility schematics
  • Excellent written and verbal communication skills
  • High degree of commitment to a quality safety culture and an incident-free work environment
  • Willingness to travel within the U.S. to support company's portfolio of PV solar/BESS assets
  • Personal values consistent with those of the AES Corporation; Safety, Integrity, Excellence, Agility and Fun

"Plus" Qualifications

  • PE qualifications, or on track to become qualified
  • Master's degree in Engineering
  • Experience with PV and Battery Energy Storage System design and interconnection
  • Power Conversion System experience preferred
  • Experience evaluating high-speed relay and system performance data
  • Proficiency with PowerBI, machine learning, or advanced analysis tools
  • Professional experience in engineering with focus on measuring and maintaining system performance
  • Experience with Data Acquisition and SCADA systems
  • Spanish language skills

AES is an Equal Opportunity Employer who is committed to building strength and delivering long-term sustainability through diversity and inclusion. Respecting all backgrounds, differences and perspectives enables us to improve the lives of our people, customers, suppliers, contractors, and the communities in which we live and work. All qualified applicants will receive consideration for employment without regard to sex, sexual orientation, gender, gender identity and/or expression, race, national origin, ethnicity, age, religion, marital status, physical or mental disability, pregnancy, childbirth, or related medical condition, military or veteran status, or any other characteristic protected under applicable law. E-Verify Notice: AES will provide the Social Security Administration (SSA) and if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization

AES is an Equal Opportunity Employer who is committed to building strength and delivering long-term sustainability through diversity and inclusion. Respecting all backgrounds, differences and perspectives enables us to improve the lives of our people, customers, suppliers, contractors, and the communities in which we live and work. All qualified applicants will receive consideration for employment without regard to sex, sexual orientation, gender, gender identity and/or expression, race, national origin, ethnicity, age, religion, marital status, physical or mental disability, pregnancy, childbirth, or related medical condition, military or veteran status, or any other characteristic protected under applicable law. E-Verify Notice: AES will provide the Social Security Administration (SSA) and if necessary, the Department of Homeland Security (DHS) with information from each new employee's I-9 to confirm work authorization.The expected salary for this position, at commencement of employment, is between $113,000 and $141,525/year; however, base pay offered may vary depending on multiple individualized factors, including market location, job-related knowledge, skills, and experience. The total compensation package for this position also includes annual bonus. The benefits offered for this position are: medical, dental, and vision coverage, life insurance, 401(k) eligibility, and paid time off (including vacation, sick leave time, and parental leave). Details of participation in these benefit plans will be provided if a candidate receives an offer of employment. If hired, employee will be in an "at-will position" and the Company reserves the right to modify base salary (as well as any other discretionary payment or compensation program) at any time, including for reasons related to individual performance, Company or individual department/team performance, and market factors.Apply by clicking the application link below and submitting your information. The deadline to apply for this role is 09/27/2026