53 performance testing engineer jobs at 34 companies in Bellevue, WA
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Electric Motor Performance Engineer
Everett, Washington, United States
$150k-$200k/yr OnsiteFull Time
7+ YOEBachelor's in Electrical Engineering required; 7+ years electromagnetic modeling experience (3+ years aerospace preferred); expert in electric motor performance modeling, multi-physics simulation, and test validation; proficiency with MATLAB, Simulink, ANSYS, Motor-CAD, OptiSlang, Twin Builder.
Maxwell 2D/3D, ANSYS Workbench, ANSYS Electronics Desktop, Motor-CAD, OptiSlang, Twin Builder, MATLAB, MATLAB Simulink
2w
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Engines System Balance & Performance Engineer II
Seattle or Huntsville
$99k-$139k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
2+ YOEB.S. in mechanical/aerospace engineering, 2+ years engineering experience, experience modeling complex fluid systems, familiarity with numerical solvers, engine testing, and Fortran/Python/Matlab.
Python, MatLab, Fortran, ROCETS, NPSS, GFSSP, Thermal-Desktop, Agentic AI
2mo
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Construction Material Testing Tech-Arlington, WA
Arlington, Washington, United States
$25-$35/hr OnsiteFull Time
Perform inspection and testing on construction projects; interpret plans, communicate with PMs; field testing; code familiarity; certifications preferred.
1mo
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Fuel Development & Testing Team Manager
Bellevue, Washington, United States
$168k-$252k/yr OnsiteFull Time
8+ YOE2+ MgmtB.S. in engineering with 8+ years relevant experience, 2+ years supervisory experience, knowledge of nuclear quality programs, design control, configuration management, fuel performance modeling/testing, and strong leadership and communication skills.
2d
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Aerospace Engineer (Flight Test)
Lakewood or Hapeville or Burlington or Westbury or Des Moines
$95k-$147k/yr OnsiteFull Time
1+ YOEEngineering bachelor's degree required, plus one year of specialized experience in aircraft performance, avionics systems testing, or human factors evaluations and compliance with airworthiness standards.
14 CFR, SF-50, eOPF
1w
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Fluids Engineer
Seattle, Washington, United States
$120k-$150k/yr OnsiteFull Time
3+ YOEBachelor's in engineering, 3+ years designing fluid system hardware for flight or high-performance applications, CAD proficiency (NX/CATIA/SolidWorks), hydraulic/pneumatic and structural analysis, hands-on build/test experience.
NX, CATIA, SolidWorks
1w
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AI Automation Engineer L1
Bellevue, Washington, United States
$100k-$180k/yr OnsiteFull Time
8+ YOE8+ years experience in enterprise platform engineering with Python and AI/ML ops; designing AI testing frameworks, performance testing, and CI/CD-integrated LLM evaluation pipelines.
Python, SQL, LLM, CI/CD
1mo
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Mechanical Engineer IV
Lynnwood, Washington, United States
$151k-$177k/yr OnsiteFull Time
8+ YOEBA/BS in engineering required (Master's/PhD preferred), 8+ years relevant experience, knowledge of mechanics, heat transfer, vibration, and electronics packaging, proficiency with Autodesk Inventor, mentoring experience, and ability to perform analyses and testing.
Autodesk Inventor
1mo
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ITC Engineer (Seattle, WA, US)
Seattle, Washington, United States
$126k-$135k/yr FieldFull Time
4+ YOEBachelor's in engineering and 4 years' related experience. Perform testing and commissioning of CBTC, supervise installations, troubleshoot wayside/railway systems, use Wireshark, Python, WinSCP, Linux/Unix and TCP/IP.
Wireshark, Python, WinSCP, Linux/Unix, TCP/IP, CBTC, ATS, ATC
1mo
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Mechanical Engineer, Satellite Harnessing (Starlink)
Redmond, Washington, United States
$100k-$140k/yr OnsiteFull Time
1+ YOEBachelor's in engineering, experience with CAD/FEA, 1+ years hands-on mechanical project experience preferred, proficiency with Siemens NX/Teamcenter, ability to perform analysis and testing, and willingness to work long hours and travel up to 30%.
Siemens NX, Teamcenter, FEA, CAD
4d
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Assembly, Integration & Test (AI&T) Engineer
Tukwila, Washington, United States
$110k-$130k/yr OnsiteFull Time
3+ YOEBachelor's in engineering or equivalent experience, 3+ years production experience (space hardware preferred), ability to interpret drawings, create harness schematics, perform integration and testing, and support troubleshooting.
Plex, MRP/ERP, Jira, Git, Python, Bash
1mo
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Staff Propulsion Engineer
Seattle or Durango or Mount Pleasant or Tulsa
$144k-$200k/yr HybridFull Time
12+ YOEM.S. or equivalent experience; 12+ years developing propulsion systems with expertise in fluid dynamics, heat transfer, combustion, hypergolic propulsion, performance modeling, testing, and mentorship.
TDK, SolidWorks, CFD, FEA, ANSYS, MATLAB/Simulink, JANNAF
3w
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Physical Security Engineer, R&D
Austin or New York City or San Francisco or Seattle
$229k-$271k/yr OnsiteFull Time
Design and engineer physical security systems (access control, video, intrusion, perimeter); produce drawings, device schedules and specs; configure access control and VMS; perform site surveys, punch walks, and acceptance testing.
Lenel, Genetec, CAD, Revit
2w
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Senior Software Engineer
Seattle, Washington, United States
$176k-$196k/yr OnsiteFull Time
7+ YOE7+ years building high-performance microservices; BS in CS or equivalent; strong Go/Java and Python/NodeJS skills; experience with gRPC/Thrift, Kafka, AWS, and cloud-native testing/monitoring.
Go, Java, Python, NodeJS, gRPC, Thrift, Kafka, AWS, AWS Connect, Twilio, Sinch, Amazon Pinpoint, LangChain, LlamaIndex, AutoGen, OpenAI, Anthropic, AWS Bedrock
1w
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Software Development Engineer III
Bellevue, Washington, United States
$166k-$203k/yr HybridFull Time
5+ YOEBachelor's in CS/IT plus 5+ years experience in object-oriented programming, RESTful services, mobile engineering (MVC/MVVM/SDUI), automated and performance/network testing; experience with Objective C or Swift.
Restful web services, MVC, MVVM, SDUI, Objective C, Swift, Performance Testing, Network Testing, Automated Testing
4d
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Quality Verification Engineer (TE2)
SeaTac, Washington, United States
$77k-$103k/yr HybridFull Time
Experience performing transportation construction field operations, materials testing, inspection, quality verification; valid driver’s license; able to lift up to 50 lb; strong communication and standards interpretation skills.
Microsoft Word, Microsoft Excel, Microsoft Outlook
13h
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Senior Software Engineer (Frontend) - Scribd Core
San Francisco or Ottawa or Phoenix or Toronto or Los Angeles or Denver or Salt Lake City or Atlanta or Chicago or Houston or Portland or New York City or Vancouver or San Diego or Washington, D.C. or Sacramento or Jacksonville or Seattle or Mexico City or Austin or Miami or Boston or Dallas
$124k-$226k/yr HybridFull Time
6+ YOERequires 6+ years of frontend software engineering experience, JavaScript/TypeScript and React expertise, modern web framework experience, architecture knowledge, performance optimization, testing, and strong collaboration skills.
JavaScript, TypeScript, React, Next.js, Microfrontend, monorepos
1w
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Engineer - Unlicensed - 2026
Seattle, Washington, United States
FieldFull Time
Experience with diesel machinery, hydraulics, and electrical systems; knowledge of shipboard machinery; TWIC card; pass pre-employment drug test; able to live and work onboard, lift up to 50 lbs, and perform physical duties.
4w
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Full Stack Engineer
Seattle, Washington, United States
$110k-$120k/yr OnsiteFull Time
4+ YOEBachelor's in Computer Science,4+ years building production SPAs with Vue3,experience with REST APIs,Django/DRF,testing and frontend performance optimizations.
Vue3, Vuetify, Pinia, vue-router, Jest, Vitest, Cypress, Playwright, Storybook, Python, Django, Django REST Framework, REST, OAuth, JWT, JSON
2mo
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Sr. Software Engineer
United States or California or San Francisco or Seattle or New York City or Santa Monica
$121k-$257k/yr RemoteFull Time
5+ YOE5+ years software development experience; strong frontend skills with React and TypeScript, state management (Context/Redux), GraphQL/REST, Next.js (SSR/SSG); mentoring and remote collaboration experience; focus on performance, scalability, and testing.
React, TypeScript, GraphQL, REST, Next.js, Redux, Contentful, Datadog, Sentry, NewRelic, CI/CD
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