663 reactjs developer jobs at 273 companies in Niagara Falls, NY

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
1w
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Senior ReactJs Developer
Toronto, Ontario, Canada
OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
5+ YOE5+ years experience building React JS applications; strong skills in Java/JavaScript, TypeScript, REST, Spring Boot, HTML, CSS, Git, Agile; API and front-end development experience.
Agile, CSS, Git, HTML, Java, Javascript, REST, Spring Boot, TypeScript, API(Application programming interface), Front end Technologies, React JS
2w
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Junior Developer (252250)
Toronto, Ontario, Canada
OnsiteFull Time
Scotiabank
ScotiabankToronto Stock Exchange: BNS: Provides global personal, commercial, and investment banking services.
Experience with ReactJS, NodeJS, Spring Boot, CI/CD, Git, and cloud platforms (GCP or Azure). Strong software development best practices, testing, debugging, and communication skills; Agile experience preferred.
ReactJS, NodeJS, Spring Boot, CI/CD, Git, GCP, Azure
4d
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Full Stack Developer
Waterloo or Toronto
$86k-$136k/yr HybridFull Time
Manulife
ManulifeNYSE: MFC: Provides life insurance, investment management, and global financial services.
4+ YOE4+ years development experience with Python and FastAPI, Azure PaaS, REST APIs, CI/CD (Jenkins/Git/Azure DevOps), ReactJS familiarity, and cloud-native deployment experience.
Python, FastAPI, REST, Azure Web Apps, Azure Functions, Azure Platform-as-a-Service (PaaS), Jenkins, Git, Azure DevOps, Azure Active Directory, Microsoft Graph APIs, Azure Key Vault, Cosmos DB, Azure OpenAI, Azure AI Search, ReactJS, Docker, Kubernetes
1mo
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Intermediate Frontend Developer
Mississauga, Ontario, Canada
$79k-$111k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
2+ YOE2+ years frontend development experience in financial services; strong ReactJS, JavaScript (ES6+), HTML5, CSS3; experience with SQL databases, RESTful APIs, and Git; familiarity with .NET/.NET Core and WPF is a plus; Bachelor’s degree or equivalent experience.
ReactJS, JavaScript (ES6+), HTML5, CSS3, SQL databases, RESTful APIs, Git, .NET Framework, .NET Core, WPF, MVVM
2mo
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Fullstack Developer Lead Vice President
Mississauga, Ontario, Canada
$121k-$171k/yr OnsiteFull Time
Citi
CitiNYSE: C: Global diversified financial services holding.
6+ YOE6+ years apps development experience; 5+ years software development with 3+ years full-stack; strong Java (Spring Boot/Framework), ReactJS, RDBMS/NoSQL, CI/CD, cloud (AWS/Azure/GCP), Docker/Kubernetes; bachelor's or equivalent.
Java, Spring Boot, Spring Framework, ReactJS, Flux, Redux, PostgreSQL, Oracle, MySQL, SQL, MongoDB, Cassandra, DynamoDB, Jenkins, GitLab CI, GitHub Actions, Azure DevOps, CI/CD, AWS, Azure, GCP, Docker, Kubernetes, TensorFlow, PyTorch, Kafka, RabbitMQ, JUnit, Mockito, Jest, React Testing Library, GraphQL
1mo
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Supervisory Lead Developer - Account Experiences
Toronto, Ontario, Canada
OnsiteFull Time, Contract
CBC/Radio-Canada
CBC/Radio-Canada: Canada's national public broadcaster providing multimedia news and entertainment.
5+ YOE2+ Mgmt5+ years software development (native Android/iOS) with 2+ years technical leadership; experience with Compose Multiplatform, ReactJS, GraphQL/REST, CI/CD, modular code, architecture patterns, mentoring, and Agile practices. Bilingual (English/French) required.
Compose Multiplatform, ReactJS, REST APIs, GraphQL, CI/CD
2mo
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Co-Op Full Stack Developer
Oakville, Ontario, Canada
OnsiteInternship
Gastronomous Technologies
Gastronomous Technologies: A fast-paced startup focused on revolutionizing food preparation through advanced automation and autonomous kitchen technology.
Pursuing a BS in CS/Software Engineering; ReactJS experience; AWS; SQL/NoSQL; Python and/or C++; Git; clean coding.
ReactJS, AWS, SQL, NoSQL, Python, C++, Git, Docker, JIRA/Confluence, Qt
2mo
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Frontend Engineer
Toronto, Ontario, Canada
$100k-$130k/yr HybridFull Time
Ecopia AI
Ecopia AI: AI-powered mapping systems for creating Earth's digital twins
1+ YOE1+ years experience; strong TypeScript; cross-browser compatibility; optimize speed and scalability; REST API design; experience with AngularJS, ReactJS, NodeJS; relational/noSQL databases; teamwork across locations.
TypeScript, AngularJS, ReactJS, NodeJS, WebGL, Unity3D, REST API, Cassandra, ElasticSearch, Postgres, MySQL, Redis
2mo
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Principal Full-Stack Software Engineer
Toronto, Ontario, Canada
$146k-$183k/yr HybridFull Time
Kraft Heinz
Kraft HeinzNASDAQ: KHC: Manufacturer and global marketer of food and beverage products.
7+ YOE7+ years in software/platform engineering or architecture; hands-on with Python (FastAPI), JavaScript/TypeScript (ReactJS), API design, SQL, cloud platforms (Azure/AWS/Google Cloud); experience leading enablement teams and improving developer productivity.
Python, FastAPI, JavaScript, TypeScript, ReactJS, SQL, Azure, AWS, Google Cloud, SonarCloud, LinearB, Datadog, Backstage
1mo
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Java Full-stack Developer
Mississauga, Ontario, Canada
$86k-$127k/yr OnsiteFull Time
Capgemini
CapgeminiEuronext Paris: CAP: Provides global IT consulting and digital transformation services.
10+ YOE10+ years IT experience; Java backend (Core Java, Java EE, Springboot, microservices) and front-end (ReactJS, NodeJs, Javascript, Angular); SQL, CI/CD and GitOps exposure; Agile (SCRUM/Kanban); strong communication and coaching skills.
Java, Core Java, Java EE, Springboot Framework, Microservices, ReactJS, NodeJs, Javascript, Angular, SQL, CICD, GitOps, SCRUM, Kanban
2w
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Full Stack Engineer
Mississauga or Canada
$95k-$115k/yr RemoteFull Time
Kruger
Kruger: Manufacturing sustainable tissue and paper products for daily use.
3+ YOE3+ years experience; BSc or MSc in Computer Science or related field; proficiency with JavaScript/TypeScript, Python, SQL, ReactJS, Django, Node.js; Agile, Git, and Linux experience; strong communication and analytical skills.
JavaScript, TypeScript, Python, SQL, ReactJS, Django, Node.js, Git, Linux, Microsoft Azure CI/CD pipelines, Kubernetes, Microsoft Azure Cloud Services
2mo
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Principal Full-Stack Software Engineer
Toronto, Ontario, Canada
$146k-$183k/yr HybridFull Time
Kraft Heinz
Kraft HeinzNASDAQ: KHC: Produces and sells condiments, dairy products, and packaged foods.
7+ YOE7+ years in software/platform engineering/architecture; strong Python (FastAPI), JavaScript/TypeScript (ReactJS); API design; DB design and SQL; cloud (Azure/AWS/GCP); leadership in enablement; internal developer platforms; experience with SonarCloud/LinearB/Datadog preferred.
Python, FastAPI, JavaScript, TypeScript, ReactJS, SQL, Datadog, SonarCloud, LinearB, Backstage
2mo
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Android Developer
Toronto, Ontario, Canada
HybridFull Time
CBC/Radio-Canada
CBC/Radio-Canada: National public broadcaster providing radio, television, and digital services.
Android development experience with Kotlin; familiarity with cross‑platform tech (Kotlin Multiplatform or React Native); Kotlin and native Android development; knowledge of APIs and third-party integrations.
Kotlin, Kotlin Multiplatform, React Native, Swift, Android, Bitbucket, Appium, CircleCI, Firebase, APIs
4d
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Senior Developer, Backend - Developer Infrastructure
Ottawa or Toronto or Calgary
$125k-$165k/yr RemoteFull Time
Fullscript
Fullscript: Healthcare platform for practitioner supplement dispensing and patient management.
Strong experience with Ruby/Rails, designing maintainable systems, testing and CI, platform/tooling and developer experience, strong communication and mentorship skills.
Ruby, Ruby on Rails, React, GraphQL
1mo
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Software Developer
Toronto, Ontario, Canada
$70k-$100k/yr HybridFull Time
ShyftLabs: Builds custom AI and data platforms for enterprise digital transformation.
Design, develop, and maintain full‑stack software; strong Python/JavaScript; frontend/backend; Agile; AI tools exposure.
Python, JavaScript, Java, C++, TypeScript, HTML, CSS, React, Angular, Git, REST, SQL, NoSQL, OpenAI APIs
6d
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Fullstack Developer
Toronto, Ontario, Canada
$77k-$120k/yr OnsiteFull Time
Wipro
WiproNYSE: WIT: Global technology services and consulting for digital transformation.
5+ YOE5+ years experience in full‑stack Java enterprise development, experience with Spring/Hibernate, frontend frameworks, cloud (Azure), CI/CD, databases, and Agile delivery.
Java, J2EE, Spring, Spring Boot, Spring Test, Hibernate, JavaScript, HTML, CSS, Bootstrap, Angular, React, Microsoft Azure, Jenkins, Linux, Azure SQL, Oracle, Redis, Maven, GitHub, IntelliJ IDEA, Visual Studio, Eclipse, SonarQube, Veracode, JIRA, Confluence, OAuth2, OpenID Connect (OIDC), GitHub Copilot
2w
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Software Developer
Toronto, Ontario, Canada
$101k-$118k/yr RemoteFull Time
Fidelity Canada
Fidelity Canada: Provides investment products and clearing services for Canadian investors.
2+ YOEUniversity degree or equivalent experience, minimum 2 years software development, full SDLC and DevOps experience, knowledge of front- and back-end web technologies and cloud (AWS).
React, Angular, Java, Spring, Spring Boot, REST, SOAP, JavaScript, HTML, HTML5, XHTML, CSS, CSS3, jQuery, SQL, PLSQL, AWS
4w
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Software Developer
Toronto or Minneapolis or United States or North America or Europe or Africa or Asia
$89k-$139k/yr RemoteFull Time
Dayforce
DayforceNYSE: DAY: Cloud platform providing global human capital and payroll management.
2+ YOE2+ years developing with C#/.NET, experience with React and TypeScript, SQL Server, Docker, cloud deployments (Azure/AWS/GCP), CI/CD, automated testing, and strong problem-solving and communication skills.
C#, .NET, .NET 6, .NET 7, .NET 8, async/await, LINQ, React, TypeScript, HTML5, CSS3, SVG, JSON, REST APIs, Web APIs, Microsoft SQL Server, Docker, GitHub Actions, Microsoft Azure DevOps, Microsoft Azure, AWS, GCP, GitHub Copilot, Codeium, Sourcegraph Cody, OpenTelemetry, Microsoft Application Insights, Prometheus, Kafka, Microsoft Azure Service Bus, Redis, LaunchDarkly
2w
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Staff Developer (Front-End)
Toronto, Ontario, Canada
RemoteFull Time
AgencyAnalytics
AgencyAnalytics: Automated reporting platform for marketing agencies to track performance.
8+ YOE8+ years SaaS development experience, full-stack coding in TypeScript/PHP, system architecture, observability, mentoring, and collaborating with Product and Design.
TypeScript, React, Redux, PHP, Laravel, GCP Cloud SQL (MySQL), BigQuery, Redis, GCP Cloud Tasks, PubSub
19h
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Software Developer
Mississauga, Ontario, Canada
$80k-$130k/yr OnsiteFull Time
University Health Network
University Health Network: Runs a network of research and teaching hospitals.
4+ YOEBachelors in CS/EE, 4+ years software development experience (regulated industry preferred); experience with TypeScript/React/Redux, Electron, Python, .NET, WPF, Azure services, Git; knowledge of medical device software standards.
TypeScript, React, Redux, Electron, Python, Azure Static Web Apps, Azure Functions, REST API, .NET, XAML, WPF, Prism, Avalonia, .NET MAUI, C#, C++, STM32, FreeRTOS, Git