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98 performance testing engineer jobs at 74 companies in Fairfield, CT

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PV Performance Engineer
San Francisco or New York City or Denver or Austin or Calgary or Toronto
$189k-$205k/yr RemoteFull Time
Intersect
IntersectNASDAQ: GOOGL: Develops-located data centers and renewable energy infrastructure.
4+ YOEBachelor's or Master's in engineering,4+ years PV/utility-scale solar experience,ASTM E2848 capacity testing expertise,advanced PV energy modeling,DC collection system knowledge,strong analysis and communication.
ASTM E2848
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Testing and Automation Engineer
Shelton, Connecticut, United States
$103k-$128k/yr OnsiteFull Time
Subway
Subway: Operates a global chain of quick-service sandwich restaurants.
3+ YOE3+ years testing/quality engineering experience; proficiency in test automation (UI/API/backend), performance testing, AI-assisted testing, CI/CD, and basic scripting in Java/JavaScript/Python/C#.
JMeter, Gatling, k6, Locust, Selenium, Cypress, Playwright, REST-assured, Postman, Java, JavaScript, Python, C#, CI/CD
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Performance Marketing Lead
New York City, New York, United States
HybridFull Time
Trove
Trove: Digital collectibles marketplace for buying and redeeming trading cards.
7+ YOE7+ years performance user acquisition for B2C, deep Meta/Google/TikTok experience, SQL proficiency, strong analytics, CAC/ROAS/LTV ownership, creative partnership, building testing engines.
Meta, Google, TikTok, SQL
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2mo
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Senior Quality Engineer, Performance and Analytics
New York City or Reno or San Ramon
$114k-$142k/yr HybridFull Time
Ridgeline
Ridgeline: Cloud-native platform for investment management operations.
5+ YOE5+ years in quality engineering for SaaS; experience validating performance analytics (TWR, Brinson, P&L), APIs, databases, cloud platforms, automated testing, and collaborating with product and engineering teams. Must be U.S. work authorized.
Claude Code, Cursor, GitHub Copilot, ChatGPT, SQL, OLAP, Columnar, AWS, Azure, Google Cloud, APIs, databases, ETL
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Aerospace Engineer (Flight Test)
Lakewood or Hapeville or Burlington or Westbury or Des Moines
$95k-$147k/yr OnsiteFull Time
Federal Aviation Administration
Federal Aviation Administration: Regulates civil aviation and manages national air traffic systems.
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
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Staff Software Engineer, Performance and Kernel, DeepMind
Mountain View or Zürich or New York City or San Francisco
$207k-$300k/yr OnsiteFull Time
Google
GoogleNASDAQ: GOOGL: Provides online search, advertising, cloud computing, and consumer electronics.
8+ YOEBachelor's or equivalent,8 years software development,5 years testing and product launches,5 years performance modeling and Linux Kernel development,3 years software design.
Linux Kernel
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Principal Engineer
New York City, New York, United States
$208k-$228k/yr HybridFull Time
Fanatics
Fanatics: Global digital sports platform for merchandise, collectibles, and betting.
7+ YOEBachelor's in CS or related plus 7+ years engineering experience; 5+ years building Android/Kotlin apps, UI, modular architectures, testing frameworks, and performance optimization; 3+ years CI pipeline experience with Gradle, Jenkins, or GitHub Actions.
Kotlin Multiplatform (KMP), Jetpack Compose, Compose Multiplatform, Kotlin, Android, Gradle, Jenkins, GitHub Actions
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Senior Quality & Automation Engineer
New York City or San Francisco
$150k-$190k/yr HybridFull Time
Kira Learning
Kira Learning: AI-powered platform providing K-12 computer science and STEM education.
6+ YOE6+ years in quality engineering or SDET roles, strong test automation and performance testing experience, familiarity with cloud (AWS), proficiency with modern frameworks and debugging, and ability to define QA strategy.
Playwright, Cypress, Jest, JUnit, PyTest, k6, Artillery, Gatling, JMeter, Locust, AWS, Next.js, React, Kotlin, Java, Spring Boot, Python, FastAPI, LangSmith
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Mechanical Engineer III - Analytical Focus
Chester, Connecticut, United States
OnsiteFull Time
Whelen Engineering
Whelen Engineering: Manufacturer of emergency warning and public safety lighting.
5+ YOEPerform structural and thermal analysis using FEA and classical methods; 5+ years engineering experience; BS or MS in Mechanical Engineering; SolidWorks, CFD, Matlab/Python proficiency; test-model correlation and materials knowledge.
FEA, Solidworks Simulation, Solidworks Flow Simulation (CFD), FEM, Matlab, Python, SolidWorks, AutoCAD, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, PDM, PLM
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Staff CX Software Engineer
New York City or London
$220k-$250k/yr OnsiteFull Time
Digital Asset
Digital Asset: Provides blockchain-based distributed ledger technology for financial markets.
8+ YOE8+ years software engineering experience, distributed systems and Canton Network expertise, consulting/client-facing experience, financial services domain knowledge, performance testing and system design skills.
Canton OS, Canton Network, helm charts, k8s
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Engineer, Electrical
Melville, New York, United States
$95k-$110k/yr OnsiteFull Time
Leviton
Leviton: Manufacturer of electrical wiring, lighting controls, and networking infrastructure.
2+ YOEDesign and test AC-to-DC power supplies; perform transformer/inductor design, EMI/EMC mitigation, PCB review, failure analysis, and supplier evaluation. Bachelor's in EE or CSE and 2+ years' experience required.
Spice Simulators, ECAD, Altium Designer, Microsoft Word, Microsoft Excel, Microsoft PowerPoint
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Physical Security Engineer, R&D
Austin or New York City or San Francisco or Seattle
$229k-$271k/yr OnsiteFull Time
Fluidstack
Fluidstack: Provides high-performance cloud GPU infrastructure for AI development.
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
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Software Engineer, Cash & Close
New York City, New York, United States
$155k-$260k/yr OnsiteFull Time
Numeric
Numeric: Provides AI-powered software for accounting and financial close automation.
3+ YOE3+ years building software, strong backend fundamentals, data structures and database knowledge, performance and code design skills, experience with resilience, testing, and observability.
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2mo
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Software Engineer, Enterprise Products
New York, New York, United States
$130k-$150k/yr HybridFull Time
Lincoln Center for the Performing Arts
Lincoln Center for the Performing Arts: Manages and curates programs for the Lincoln Center campus.
Experience building digital commerce systems; proficient in JavaScript/TypeScript; React/Next.js; REST/GraphQL; cloud (AWS/GCP/Azure); CI/CD; testing; analytics and performance optimization; strong collaboration and communication.
JavaScript, TypeScript, React, Next.js, REST, GraphQL, AWS, GCP, Azure, CI/CD, Testing, Analytics
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Senior/Staff Software Engineer, Developer Experience
London or Toronto or San Francisco or New York City or Montreal or Paris or Seoul or Germany or Canada or United States
RemoteFull Time
Cohere
Cohere: Provides enterprise-grade large language models and AI software platforms.
5+ YOE5+ years software engineering with automation/testing infra focus; expert Python and TypeScript; GitHub Actions/workflows; CI/CD, Docker, Kubernetes; cloud (AWS/GCP/Azure); benchmarking and performance testing experience.
Python, TypeScript, GitHub workflows, GitHub Actions, Helm charts, ArgoCD, Docker, Kubernetes, Terraform, Pulumi, AWS, GCP, Azure
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Senior Developer
New York City, New York, United States
$150k-$210k/yr OnsiteFull Time
Intercontinental Exchange
Intercontinental ExchangeNYSE: ICE: Operates global financial exchanges, clearing houses, and mortgage platforms.
5+ YOEBachelor's degree in computer science or engineering; 5+ years of C/C++ development on Linux; 2+ years of scripting; testing, CI, network protocols, multithreading, performance, and AI coding tools.
C, C++, Linux, Python, Perl, Bash, Coverity, Valgrind, gcov, TCP/IP, Claude Code, Codex, Cursor
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Inspections Engineer
New Hyde Park, New York, United States
FieldFull Time
M&J Engineering
M&J Engineering: Provides engineering and construction management services for infrastructure.
5+ YOEPerform field inspections for transportation/infrastructure projects, prepare inspection reports, document activities; Master's in engineering preferred or Bachelor's plus 5 years; experience with structural welding inspection and non-destructive testing.
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Software Engineer - Game Integrations
New York City, New York, United States
$180k-$275k/yr OnsiteFull Time
General Intuition
General Intuition: Developing AI models that perceive and act in dynamic environments.
5+ YOE5+ years C# experience in performance-critical contexts, strong Windows knowledge, game engine/plugin development (Unreal/Unity), profiling and performance optimization, familiarity with A/B testing and metrics, passion for games.
C#, C++, Unreal, Unity, DX11, DX12, Vulkan, Windows, Electron, React, Redux, Styled Components, Swift, Kotlin, Java, Redis, RabbitMQ, Kubernetes, Terraform, Salt, GitHub Actions, CircleCI
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Senior AI SDET Engineer
New York, New York, United States
$150k-$180k/yr OnsiteFull Time
Octaura
Octaura: Electronic trading platform for syndicated loans and CLOs.
7+ YOE7+ years SDET/QA or performance engineering experience; expertise in performance testing, workload modeling, bottleneck analysis; strong TypeScript/JavaScript skills; Playwright and performance tool experience; CI/CD and Git familiarity.
TypeScript, Playwright, k6, Artillery, Gatling, JMeter, Locust, Java, Python, C#, SQL, Git, CI/CD
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Senior Software Engineer (UI)
Brooklyn, New York, United States
$150k-$200k/yr HybridFull Time
SkyLink
SkyLinkBME: AMS: AI-powered corporate travel booking and management platform.
5+ YOE5+ years frontend engineering experience with React and TypeScript; strong product, design, API and database understanding; experience across stack, testing, and performance.
React, TypeScript, Python, Django, Celery, Redis, PostgreSQL, AWS, Docker, Slack, Microsoft Teams
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