48 react engineer jobs at 34 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
1mo
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Technical Support Engineer
Toronto, Ontario, Canada
$100k-$125k/yr HybridFull Time
Sentry
Sentry: Developer platform for error tracking and performance monitoring.
4+ YOE4+ years in technical support, systems engineering, or software development; mastery of Python/JavaScript/Java/Ruby; deep systems and distributed tracing knowledge; familiarity with LLM orchestration and AI tooling; exceptional communication.
Python, JavaScript, Java, Ruby, React, GitHub, Discord, CI/CD, SDKs, APIs, Model Context Protocol (MCP), Sentry, Seer, LLM, RAG
1mo
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Software Engineer
Toronto, Ontario, Canada
$125k-$175k/yr HybridFull Time
Sanofi
SanofiEuronext Paris: SAN: Researches, develops, and manufactures medicines and vaccines globally.
4+ YOE4+ years experience; Bachelor's in CS/Engineering preferred; cloud (AWS/GCP/Azure); Terraform/AWS CDK; Node.js; React; microservices; CI/CD; cloud security; DevOps.
Node.js, TypeScript, JavaScript, React, Terraform, AWS CDK, AWS, GCP, Azure, CI/CD, Microservices, Cloud security
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
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
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
3d
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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
3d
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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
1mo
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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
1w
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Senior Lead AI Application Engineer
Toronto or Calgary
OnsiteFull Time
Royal Bank of Canada
Royal Bank of CanadaTSX: RY: Provides personal, commercial, and investment banking services worldwide.
5+ YOEBachelor's degree or equivalent,5+ years building production full‑stack systems with React/TypeScript and Node.js/Java/Python back ends,multi‑agent engineering,cloud‑native Kubernetes CI/CD,API and data integration,DevSecOps and observability experience.
React, TypeScript, Node.js, Express, Python, FastAPI, Java, Spring Boot, REST, gRPC, GraphQL, LangGraph, AutoGen, CrewAI, FAISS, pgvector, Milvus, Pinecone, Docker, GitHub Actions, Jenkins, Argo CD, Terraform, Helm, Kubernetes, Kafka, Redis, OpenTelemetry, Grafana, Prometheus, OAuth2, OIDC, Vault, KMS, Apigee, Kong, Istio, Linkerd, Snowflake, Postgres, MongoDB, ServiceNow, DeepSpeed, Triton, ONNX, Ray, SageMaker
3w
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Software Engineer II
Toronto or Quebec or Canada
$100k-$115k/yr RemoteFull Time
commonsku
commonsku: Connected workflow platform for the promotional products industry.
3+ YOE3+ years professional software development; experience with PHP, Python, React, API development, relational databases, cloud platforms (AWS), containerization (Docker, ECS Fargate), and modern CI/CD; SaaS experience preferred.
PHP, Python, React, MySQL (Aurora), AWS, Snowflake, Symfony, ECS Fargate, Docker, OpenAI, Gemini, New Relic, Datadog, CI/CD
2mo
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Full Stack Engineer
Redwood City or Toronto
$150k-$1000k/yr OnsiteFull Time
8090 Solutions
8090 Solutions: A software-focused delivering hosted software for customers.
Full-stack web development experience using Python, TypeScript, React, and AWS; strong communication; end-to-end ownership; on-site in Redwood City or Toronto.
Python, TypeScript, React, AWS, GitHub Actions, Docker, AWS CDK
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
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
1mo
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Software Developer (264358)
Toronto, Ontario, Canada
OnsiteFull Time
Scotiabank
ScotiabankToronto Stock Exchange: BNS: Provides global personal, commercial, and investment banking services.
3+ YOE3+ years React.js and JavaScript experience, proficiency with HTML5/CSS3/SCSS, Redux/Flux, NodeJS, front-end optimization, mobile web/PWA, testing with Jest/React Testing Library/Playwright/Cypress, cloud (GCP or Azure) or microservices experience, and a bachelor's in a technical field.
React.js, JSX, Redux, Flux, Immutable.js, JavaScript, HTML5, CSS3, SCSS, EcmaScript (ES6+), NodeJS, Yarn, NPM, PWA, GCP, Azure, Accessibility for Ontarians and Disability Act (AODA), Jest, React Testing Library, Playwright, Cypress, Webpack, Babel, RESTful APIs, GraphQL, ExpressJS, Java, JSON Web Token, Git, Bitbucket, Continuous Integration
1mo
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Analytics Engineer
United States or Buffalo
$120k-$145k/yr HybridFull Time
SelectFI
SelectFI: Predictive lending software for automotive dealership finance teams.
4+ YOE4+ years in analytics/data engineering, strong SQL and Python, Redshift and AWS experience, ETL/ELT and data modeling skills, clear communicator, Bachelor's or Master's in relevant field.
SQL, Python, AWS, Redshift, QuickSight, SageMaker, Glue, Git, React, JavaScript, Claude Code
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
2d
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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
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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Lead Full Stack Developer - Delo (Toronto, ON, CA, M5C 3G7)
Toronto or Montreal
$84k-$175k/yr HybridFull Time
Deloitte
Deloitte: Global provider of audit, consulting, financial, and tax services.
10+ YOE10+ years software engineering experience; strong React/Next.js front-end and Python/FastAPI back-end; production systems, event-driven architectures, PostgreSQL, MongoDB, Elasticsearch, LLM experience, CI/CD, and strong API design skills.
React, Next.js, Python, FastAPI, PostgreSQL, MongoDB, Elasticsearch, SQL, NoSQL, LLM, Cursor, Claude Code, Codex, pgvector, milvus, Docker, Kubernetes, AWS, Azure, GCP, CI/CD