21 react js developer jobs at 19 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
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
2mo
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Senior Developer, Fullstack - Identity and Access Management (IAM)
Ottawa or Toronto or Calgary
$125k-$165k/yr RemoteFull Time
Fullscript
Fullscript: Healthcare platform for practitioner supplement dispensing and patient management.
5+ YOE5+ years software development; IAM, authentication, authorization, SSO, OAuth; Ruby on Rails, React, JavaScript/TypeScript, GraphQL; collaborative, security-minded.
Ruby on Rails, React, JavaScript, TypeScript, GraphQL, Apollo
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
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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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
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
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
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
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
2d
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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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Senior Software Engineer – Enterprise Design System
Buffalo, New York, United States
$97k-$162k/yr OnsiteFull Time
M&T Bank
M&T BankNYSE: MTB: Provides retail, commercial, and wealth management banking services.
3+ YOEBachelor's +3yrs or Associate +5yrs (or 7yrs combined) in systems analysis/application development; experience building TypeScript component libraries, Node.js tooling, web components, accessibility (a11y), CI/CD, automated testing, and collaboration with design/product teams.
TypeScript, JavaScript, Node.js, React, Angular, Vue, Solid, Svelte, Lit, Web Components, Shadow DOM, Storybook, Figma, CI/CD, WCAG
3w
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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
2w
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Associate Application Developer – Hybrid Cloud and Data
Buffalo or Baton Rouge or Monroe or Lansing
$45k-$83k/yr HybridFull Time
IBM
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Bachelor's degree in CS/Engineering (or equivalent), strong computer science fundamentals, coding ability in Java/C#/Python/JavaScript/TypeScript, exposure to web/cloud platforms (AWS/Azure/IBM Cloud), Agile and teamwork experience, and ability to work onsite with extensive travel.
Java, C#, Python, JavaScript, TypeScript, Scala, SQL, Angular, React, Spring Boot, .NET Core, Flask, Django, Node.js, AWS, Azure, Google Cloud, IBM Cloud, Red Hat OpenShift, MySQL, PostgreSQL, SQL Server, Oracle, DB2, MongoDB, SPSS, SAS, Tableau, Hadoop, Spark, Data Migration Assistant, Azure App Service Migration Assistant
3w
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Engineering Lead
Toronto, Ontario, Canada
HybridFull Time
Codal
Codal: A design and development agency building digital solutions.
6+ YOE3+ MgmtHands-on engineering lead with architecture and full-stack experience. Experience with Node.js/React/Python, cloud and containerization, CI/CD, team mentorship, and delivering enterprise projects. Bachelor's degree in CS/IT or related.
Node.js, React, JavaScript, TypeScript, Python, REST, GraphQL, OAuth, JWT, PostgreSQL, MongoDB, Redis, Docker, Kubernetes, AWS, Azure, GCP, BigQuery, SQL, NoSQL, CI/CD
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
3mo
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Sr Full-Stack Software Eng (MTS1)
Toronto, Ontario, Canada
$142k-$190k/yr OnsiteFull Time
eBay
eBayNASDAQ: EBAY: Global online marketplace for buying and selling diverse products.
8+ YOESenior Full Stack Engineer with 8+ years of experience; strong Java/J2EE, Spring/Spring Boot, Node.js, front-end React/Angular, REST/JSON, databases, and related technologies.
Java/J2EE, Spring, Spring Boot, Node.js, XML, REST, JSON, React, Angular, JavaScript, CSS, HTML5, Relational Databases, NoSQL, ElasticSearch
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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Application Development Analyst II, EAS
Buffalo, New York, United States
$85k-$95k/yr OnsiteFull Time
University at Buffalo
University at Buffalo: Public research university offering undergraduate and graduate academic programs.
3+ YOEBachelor’s degree with 3 years (or master’s with 1 year), advanced software development expertise, proficiency in Java/JavaScript/Python/SQL and modern frameworks, experience with Git, CI/CD, automated testing, strong problem-solving and communication; US work authorization required.
Java, JavaScript, Python, SQL, Angular, React, Node.js, Git, CI/CD, AWS, Azure, GCP, Docker, Podman, Kubernetes, OpenShift, Bash, Perl, ArgoCD, Helm, Kustomize, Linux, RESTful APIs, GitOps