37 senior react developer jobs at 27 companies in Tonawanda, 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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Software Engineer (React + Angular)
Brazil or Toronto
HybridFull Time
Exadel: Provides digital engineering and AI-focused software consulting services.
Senior frontend experience with React 19 and Angular 21+, strong HTML5/CSS3/JavaScript (ES6+)/TypeScript skills, state management (Redux/NgRx/Context), build tools (Webpack/Vite), unit testing (Jasmine/Jest), and Angular Material.
React 19, Angular 21+, HTML5, CSS3, JavaScript (ES6+), TypeScript, Redux, NgRx, Context API, Webpack, Vite, Jasmine, Jest, Angular Material, OpenFin, Bootstrap, Tailwind CSS, Mithril.js
2mo
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Senior Fullstack Developer, Consumer
Toronto, Ontario, Canada
$120k-$150k/yr HybridFull Time
HelloFresh
HelloFreshFrankfurt Stock Exchange: HFG: Global meal kit delivery service and food solutions provider.
4+ YOE4+ years in agile software development; strong React JS experience; backend experience with Node.js/Nest/Nx; GraphQL, SQL, testing, and CI/CD; knowledge of storefronts (Shopify) and AI coding tools.
React, Next.js, Nest.js, Shopify, GraphQL, SQL, Node.js, Python, GoLang, Nuxt.js, Remix, Datadog, Sentry, Honeycomb, New Relic, AB testing, Multivariate testing
1mo
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Senior Software Engineer, CMS (Auto Repossession & Remarketing)
Toronto, Ontario, Canada
$140k-$190k/yr OnsiteFull Time
TRADER Corporation
TRADER Corporation: Operates Canada's largest digital marketplace for buying and selling vehicles.
5+ YOESenior engineer with ownership mindset; strong TS/React; .NET expertise; experience building production systems; AI/GenAI experience a plus.
TypeScript, React, Next.js, .NET
3w
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Senior Front End Developer
Toronto, Ontario, Canada
$100k-$142k/yr HybridFull Time
Moneris
Moneris: Processes merchant payments and provides point-of-sale commerce solutions.
Bachelor's in CS or equivalent; proven experience with React, TypeScript, and React Native; GitHub/GitHub Actions; automated testing (unit/API/UI); designing secure, scalable applications; Agile experience and strong communication.
React, React Native, TypeScript, GitHub, GitHub Actions, Kotlin, Swift, Android
1mo
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Senior Software Engineer
Toronto or Alberta or British Columbia or Manitoba or New Brunswick or Newfoundland and Labrador or Nova Scotia or Ontario or Prince Edward Island or Saskatchewan
$95k-$145k/yr RemoteFull Time
Applied Systems
Applied Systems: Develops cloud software for the global insurance industry.
8+ YOE8+ years software engineering experience; expertise in C#, .NET or Golang and React; proficiency with JavaScript/TypeScript, UI/API testing (RestSharp, Cypress), CI/CD, unit and E2E testing; strong communication and mentoring skills.
React, Golang, C#, .NET, JavaScript, TypeScript, RestSharp, Cypress, CI/CD, E2E
4d
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Senior Full Stack Developer
Toronto, Ontario, Canada
$120k-$145k/yr HybridFull Time
Konrad Group
Konrad Group: Provides digital strategy, design, and software development services.
5+ YOE5+ years building production web applications; strong JavaScript skills; experience with TypeScript, Node.js, Next.js; front-end framework experience (React/Angular); knowledge of web architecture and core web principles.
JavaScript, TypeScript, Node.js, Next.js, React, Angular, Gatsby, Remix.js, Wordpress, AEM, Sitefinity, AWS, Google Cloud, Azure, GraphQL, ElasticSearch, Serverless
3w
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Senior Developer, Digital Development
Toronto, Ontario, Canada
HybridFull Time, Contract
CBC/Radio-Canada
CBC/Radio-Canada: Canada's national public broadcaster providing multimedia news and entertainment.
Experienced software developer with JavaScript/TypeScript, Node.js and React.js expertise; test automation (Jest), cloud/container (OpenShift, Docker, Kubernetes), CI/CD (Jenkins) and SDLC knowledge. Computer Science/Engineering degree preferred.
JavaScript, TypeScript, Node.js, React.js, Jest, OpenShift, Docker, Kubernetes, Jenkins, Conductrics, GraphQL, Elasticsearch
1mo
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Senior Full Stack Developer
Toronto, Ontario, Canada
OnsiteFull Time
Royal Bank of Canada
Royal Bank of CanadaTSX: RY: Provides personal, commercial, and investment banking services worldwide.
4+ YOE4+ years developing and shipping production code; front-end with HTML/CSS, React, JavaScript/TypeScript; back-end with Python and relational databases (PostgreSQL); APIs, authentication, Git, CI/CD, Ansible, automated testing, ML/AI frameworks; experience building scalable, fault-tolerant systems.
HTML/CSS, React, Front-End Framework/Libraries, JavaScript, TypeScript, Python, PostgreSQL, Git, CI/CD, Ansible, Machine Learning/AI Frameworks, N8N, Tines, Databricks, Jira
4d
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Senior Full Stack Software Engineer
Toronto, Ontario, Canada
HybridFull Time
Kraft Heinz
Kraft HeinzNasdaq: KHC: Produces and sells packaged food and beverage products globally.
5+ YOE5+ years software engineering experience; strong with React and TypeScript, Python (FastAPI), SQL; cloud experience (Azure preferred); automated testing, CI/CD, and strong communication skills; English fluency required.
React, TypeScript, Python, FastAPI, JavaScript, SQL, Azure
3w
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Senior Java Developer
Toronto or Calgary
$64k-$106k/yr HybridFull Time
Canadian Tire Corporation
Canadian Tire CorporationToronto Stock Exchange: CTC: Sells general merchandise, automotive products, and financial services in Canada.
6+ YOE6+ years building enterprise Java (Java 11+) applications with Spring ecosystem, microservices, cloud-native (Azure preferred), Docker/Kubernetes, CI/CD (Azure DevOps), SQL, observability tools, and strong communication and leadership skills.
Java 11+, Spring Boot, Spring Cloud, Spring Data, Spring Security, Microsoft Azure, AWS, GCP, Docker, Kubernetes, Git, Maven, Gradle, Microsoft Azure DevOps, GitHub Copilot, JUnit, Mockito, SpringBoot Test, Test containers, New Relic, Splunk, Datadog, SAP Hybris, Angular, React, SQL
4w
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Senior Software Developer
Toronto or St. Catharines or Montreal
$120k-$130k/yr HybridFull Time
Rentsync
Rentsync: Provides software and marketing solutions for rental property management.
6+ YOE6+ years building and shipping production software; hands-on experience putting LLMs into production (RAG, agents, evals); strong backend and frontend skills; proficiency with Git/GitHub and cloud platforms.
TypeScript, Node, React, VueJS, Vite, Tailwind, PostgreSQL, MySQL, MsSQL, Python, Cloudflare, AWS, Azure, MCP, Docker, Git, GitHub, Jira, GraphQL, LLM
1mo
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Senior Software Engineer (259561)
Toronto, Ontario, Canada
OnsiteFull Time
Scotiabank
ScotiabankToronto Stock Exchange: BNS: Provides global personal, commercial, and investment banking services.
10+ YOE10+ years full stack development with Java/Spring Boot and React.js, 5–7 years SQL and enterprise web app experience, 5+ years Python, DevOps/CI-CD experience (Bitbucket, Jenkins, Sonar), cloud experience (GCP, Azure), and Agile.
React.js, Java, Spring Boot, Python, JavaScript, TypeScript, SQL, Bitbucket, Jenkins, Sonar, Google Cloud Platform (GCP), Microsoft Azure
1w
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Senior Software Engineer
Toronto, Ontario, Canada
$90k-$133k/yr HybridFull Time
Morningstar
MorningstarNASDAQ: MORN: Provides independent investment research, financial data, and management services.
5+ YOEBachelor's degree and 5+ years experience; strong Python and cloud (AWS) experience building file-based data pipelines; familiarity with CSV/Parquet/JSON, SQL, Git, CI/CD, and monitoring/alerting.
Python, AWS, Google Cloud Platform, Azure, S3, Lambda, Step Functions, Glue, ECS, Snowflake Marketplace, SQL, Git, CI/CD, Vue.js, React
2w
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Senior Software Engineer II, Cloud Data Ingestion & Transformation
Toronto, Ontario, Canada
$187k-$300k/yr HybridFull Time
Braze
BrazeNASDAQ: BRZE: Platform for personalized customer engagement and cross-channel messaging.
6+ YOE6+ years full-stack development experience, strong backend focus; technical leadership and architectural experience; knowledge of data pipelines, distributed systems, and modern web stacks.
Kafka, Airflow, Sidekiq, SQS, RabbitMQ, Python, Django, React, Ruby on Rails, Snowflake
4w
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Expression of Interest: Senior AEM Developer
Toronto, Ontario, Canada
$80k-$130k/yr RemoteFull Time
Publicis Groupe
Publicis GroupeEuronext Paris: PUB: Global advertising and digital transformation agency holding.
6+ YOE6+ years building enterprise web experiences on Adobe Experience Manager; strong Java, HTL, JavaScript/TypeScript, GraphQL, and AEM Cloud/Dispatcher experience; technical leadership, architecture, accessibility, and mentoring skills.
Adobe Experience Manager (AEM), AEM Cloud Manager, AEM Dispatcher, HTL/Sightly, Java, Apache Sling, OSGi, Maven, JavaScript, TypeScript, React, Angular, Vue, HTML5, CSS, LESS, SASS, GraphQL, Content Fragments, MuleSoft, RESTful APIs, AWS CloudFront, Caffeine, Git, CI/CD, Azure DevOps, Azure Pipelines, Okta, Veracode, npm, Docker, Figma, Lighthouse
4d
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Staff Frontend Engineer
Toronto, Ontario, Canada
$160k-$250k/yr HybridFull Time
US Mobile
US Mobile: A mobile virtual network operator providing flexible cell phone plans.
8+ YOE8+ years front-end experience; proficiency in TypeScript, React, state management, accessibility, responsive design; experience with complex legacy code and cross-platform UIs.
React, TypeScript, CSS-in-JS, Tanstack Query, Redux, Zustand, React Native, Rust
2w
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Lead Software Engineer AI (Staff Engineer)
Eagan or Frisco or Toronto or Ann Arbor
$127k-$237k/yr HybridFull Time
Thomson Reuters
Thomson ReutersNASDAQ: TRI: Provides professional software, data, and news services globally.
5+ YOEBachelor's degree or equivalent, 5+ years full-stack experience building scalable cloud applications; expertise in C#/.NET, backend architecture, APIs, distributed systems, and AI integration (LLMs, OpenAI/Anthropic); front-end skills (JavaScript/Typescript, Angular/React); AWS, PostgreSQL/SQLServer, CI/CD.
C#, .NET, ASP.NET Core, FastAPI, SQLServer, PostgreSQL, AWS, Vercel, JavaScript, Typescript, HTML, CSS, Angular, React, GitHub Actions, OpenAI, Anthropic, LLMs
2w
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Lead Software Engineer, AI & Emerging Tech
Toronto, Ontario, Canada
OnsiteFull Time
CPP Investments
CPP Investments: Professional investment management organization for the Canada Pension Plan.
6+ YOE1+ Mgmt6+ years engineering experience, 1–2 years leading AI/ emerging tech initiatives; hands-on coding in Python and React, AWS cloud, Gen AI, DevSecOps, containerization, and AI/ML system design.
Python, React, Amazon Bedrock, LangChain, LlamaIndex, Hugging Face, PandsAI, GPT, Claude, Gemini, Copilot, Next.js, TypeScript, JavaScript, AWS EC2, ELB/GLB/NLB, EKS, Fargate, Lambda, Athena, Glue, Lake Formation, Puppet, Terraform, Docker, Apache Airflow, Weaviate, Milvus, PGVector, Neo4J, Neptune, NumPy, Pandas, Matplotlib, Boto3, Ragas, Playwright, Zephyr, Selenium, JIRA, Confluence, JIRA Align, QuickSight, Tableau
1mo
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MTS 2 Full Stack Engineer
Toronto, Ontario, Canada
HybridFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
10+ YOEBS/BA in CS or related; 10+ years full-stack experience with TypeScript, Node.js, and React; strong backend, API (REST/GraphQL), database, CI/CD, testing, observability skills; mentoring and cross-functional collaboration.
TypeScript, Node.js, React, REST, GraphQL, CI/CD
2mo
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Software Engineer, Full-Stack Applications - Ratings Technology (Toronto, ON, CA)
Toronto, Ontario, Canada
$100k-$150k/yr HybridFull Time
Fitch Group
Fitch Group: Provides global credit ratings and financial market research services.
7+ YOE7+ years of full-stack enterprise software experience; strong backend (Java/Spring Boot, Python) and frontend (React) skills; cloud, DevOps, and data knowledge.
Java, Spring Boot, Maven, Python, FastAPI, Flask, ReactJS, Node.js, AWS, Kubernetes, GitHub Actions, PostgreSQL, Oracle, MongoDB, Kafka, PySpark, Parquet, Avro, Apache Airflow, Streamlit, Bash

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