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Sr Performance Test Engineer Jobs in Seattle, WA

Helion Energy

Senior Test Engineer

Everett, WA · On-site

$182K - $214K/yr

As a Test Engineer at Helion, you will be responsible for designing, building, and sustaining the ... Analyze test data to generate FPY, yield, and performance metrics, and partner with design teams to ...

Fresh Consulting

Sr. Electrical Test Engineer

Kent, WA · On-site

... a highly skilled Sr. Electrical Test Engineer to join our team in Kent, WA, supporting the ... You will work alongside multidisciplinary teams to ensure the quality, performance, and reliability ...

Fresh Consulting

Sr. Electrical Test Engineer

Kent, WA · On-site

... a highly skilled Sr. Electrical Test Engineer to join our team in Kent, WA, supporting the ... You will work alongside multidisciplinary teams to ensure the quality, performance, and reliability ...

Protingent

Test Engineer

Bellevue, WA · On-site

$37 - $74/hr

Under the guidance of Senior Test Engineers, support the coordination of testing activities for setup and commissioning of experimental equipment. * Support continuous learning and application of ...

Nvidia

Senior Performance Engineer - DGX Cloud

Redmond, WA · On-site

$117K - $160K/yr

We are seeking a Senior Performance Engineer to characterize workloads, establish performance baselines, diagnose bottlenecks, and drive optimizations from investigation through deployment. Your work ...

Algas-SDI International LLC

Test Engineer

Kent, WA · On-site

$89K - $115K/yr

Reduce and analyze test data; report findings and performance conclusions to engineering and ... support design changes driven by results. * Establish and enforce safe test procedures and maintain ...

System One

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

System One

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

System One

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

System One

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

System One

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

System One Holdings, LLC

Test Engineer

Bellevue, WA · On-site

$52 - $85/hr

Test Engineer (Contract) Location: Bellevue, WA or Everett, WA (100% Onsite) Company: System One ... Experience supporting R&D, acceptance, validation, qualification, or performance testing.

Blue Origin

Sr. Test Engineer

Seattle, WA · On-site

$145K - $203K/yr

Mentor junior engineers in all aspects ofcomponenttestingand support Test Operations'engineering ... Blue Origin hires and promotes people on the basis of their qualifications, performance, and ...

Reliable Robotics

Sr. Radar Test Engineer

Seattle, WA · On-site

$140K - $225K/yr

As a Radar Test Engineer, you will be a part of our Test Engineering team working directly with our radar development program. We enjoy a culture of sharing information and collaboration. Phased ...

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Showing results 21-40

All JobsSr Performance Test Engineer JobsSr Performance Test Engineer Jobs in Seattle, WA

Sr Performance Test Engineer information

See Seattle, WA salary details

$11

$53

$79

How much do sr performance test engineer jobs pay per hour?

As of Aug 9, 2026, the average hourly pay for sr performance test engineer in Seattle, WA is $53.01, according to ZipRecruiter salary data. Most workers in this role earn between $39.66 and $67.31 per hour, depending on experience, location, and employer.

What are some typical challenges faced by a Sr Performance Test Engineer, and how can these be addressed?

Sr Performance Test Engineers often encounter challenges such as simulating real-world user loads, identifying performance bottlenecks in complex systems, and ensuring testing environments closely mirror production. Addressing these requires collaboration with developers and DevOps teams to set up accurate test environments, using advanced monitoring tools to trace issues, and continuously refining test scripts as applications evolve. Proactively communicating with stakeholders and staying updated on the latest performance testing tools can also help overcome these challenges.

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

AspectSr Performance Test EngineerPerformance Test Engineer
CredentialsTypically requires 5+ years experience, certifications like ISTQB or ISTQB Advanced, and strong technical skillsUsually requires 2-4 years experience, similar certifications, and foundational testing skills
Work EnvironmentWorks in complex projects, often leads testing efforts, and collaborates with multiple teamsPerforms testing tasks under supervision, supports performance testing activities
Industry UsageCommonly employed in IT, software development, and enterprise applicationsUsed across similar industries, often as an entry to mid-level role

The main difference is experience level and responsibility. Sr Performance Test Engineers lead testing efforts and handle complex scenarios, while Performance Test Engineers focus on executing tests and supporting the team. Both roles require similar skills and certifications, but the senior role involves more leadership and strategic planning.

What is a Sr Performance Test Engineer?

Senior Performance Test Engineers are experienced professionals responsible for designing, implementing, and executing tests to evaluate the speed, responsiveness, scalability, and stability of software applications under varying workloads. They analyze system performance, identify bottlenecks, and recommend optimizations to ensure the application meets performance requirements. Additionally, Sr Performance Test Engineers often lead performance testing initiatives, mentor junior testers, and collaborate closely with development and operations teams to ensure a high-quality user experience.

What are the key skills and qualifications needed to thrive as a Sr Performance Test Engineer?

To thrive as a Sr Performance Test Engineer, you need an in-depth understanding of performance testing concepts, scripting, and analysis, typically supported by a degree in computer science or a related field. Expertise in tools like LoadRunner, JMeter, and monitoring systems such as Dynatrace or New Relic, along with relevant certifications, is often required. Strong analytical thinking, problem-solving abilities, and effective communication skills set standout professionals apart in this role. These skills and qualities are crucial to accurately identify bottlenecks, ensure system reliability, and drive collaboration across development teams for optimal application performance.
What are popular job titles related to Sr Performance Test Engineer jobs in Seattle, WA? For Sr Performance Test Engineer jobs in Seattle, WA, the most frequently searched job titles are:
What job categories do people searching Sr Performance Test Engineer jobs in Seattle, WA look for? The top searched job categories for Sr Performance Test Engineer jobs in Seattle, WA are:
Sr Performance Test Engineer jobs near you
Infographic showing various Sr Performance Test Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 83% Full Time, and 17% Contract. Highlights an 100% In-person job distribution, with an average salary of $110,257 per year, or $53 per hour.

Senior Test Engineer

Helion Energy

Everett, WA • On-site

$182K - $214K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 22 days ago

Job description

About Helion
We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.
Since Helion's founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward. Our current prototype, Polaris, has reached record-breaking plasma temperatures of 150 million degrees Celsius (13 keV). Helion is continuing to iterate and on the path to the world's first fusion power plant, Orion.
This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.
What You Will Be Doing:
As a Test Engineer at Helion, you will be responsible for designing, building, and sustaining the electrical test systems that validate PCBAs, power electronics, and high-voltage assemblies used across our fusion generators. You will operate at the intersection of design engineering and production, ensuring that test infrastructure is robust, repeatable, and safe for hand-on execution by technicians.
Your work will directly enable faster hardware iteration, improved first-pass yield, and reliable delivery of mission-critical electrical systems that support Helion's fusion generators and pulsed-power architecture. This is a hands-on, lab-based role reporting to the Production Manager and working closely with Design Engineers, R&D Engineers, and Technicians/Supervisors. This is onsite role located at our Everett, WA office.
You Will:
  • Design and deliver electrical test systems for PCBA and high-voltage assemblies, including test rack architecture, fixture design, instrumentation selection, electrical integration, and supporting automation
  • Design test fixture PCBAs used within test racks and fixturing, owning schematic capture, layout, review, and bring-up to enable functional validation and diagnostics of production hardware
  • Build, wire, debug, and maintain complete test racks and fixtures, including power distribution, safety interlocks, signal routing, and data acquisition integration
  • Develop and maintain data acquisition and control tools using Python or PLC-based systems to support sequencing, measurement, and reporting
  • Write and maintain test procedures, calibration standards, and test limits in collaboration with design engineering and production leadership
  • Analyze test data to generate FPY, yield, and performance metrics, and partner with design teams to refine thresholds and improve robustness
  • Work hands-on with technicians and supervisors to standardize safe, repeatable test execution and continuously improve test system scalability and maintainability
  • Support deployment and sustainment of test infrastructure at Contract Manufacturers, including validation of test hardware and associated electronics

Required Skills:
  • Bachelor's degree in electrical engineering, Mechatronics, or a related field
  • 5+ years of experience developing and supporting electrical or electronic test systems in R&D or production environments
  • Demonstrated experience designing PCBAs for test fixtures or test systems, including schematic capture, layout, review, and bring-up
  • Proficiency with ECAD tools such as Altium Designer or equivalent
  • Strong hands-on experience designing, building, wiring, and debugging test racks, fixtures, harnesses, and control systems
  • Working experience with Python or PLC-based systems for test sequencing, automation, and data acquisition
  • Proficiency using standard lab instrumentation including oscilloscopes, DMMs, power supplies, electronic loads, and spectrum analyzers
  • Strong understanding of electrical safety principles and lab best practices
  • Strong analytical skills with experience interpreting FPY, yield, or performance metrics
  • Proven ability to collaborate across design engineering, production, and technician teams and communicate clearly at multiple levels

#LI-Onsite
Benefits
Our total compensation package includes benefits, including but not limited to:
  • Medical, Dental, and Vision plans for employees and their families
  • 31 Days of PTO (21 vacation days and 10 sick days)
  • 10 Paid holidays, plus company-wide winter break
  • Up to 5% employer 401(k) match
  • Short term disability, long term disability, and life insurance
  • Paid parental leave and support (up to 16 weeks)
  • Annual wellness stipend

Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.

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