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147 reactjs developer jobs at 70 companies in Allentown, PA

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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
Help us #BeatIndeed & #BeatLinkedIn
1w
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Technology Consultant 2
Pennington, New Jersey, United States
$76k-$120k/yr OnsiteFull Time
Infosys
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Experience with ReactJS and Node.js, front-end design and micro‑front‑end implementations, building REST/GraphQL APIs, Azure and DevOps familiarity, strong problem‑solving and communication skills; bachelor\u0002s degree or equivalent.
ReactJS, Node.js, JavaScript, GraphQL, RESTful API, Azure, DevOps, Spring Boot, CSS, SCSS, HTML5, DOM
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2w
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Lead Developer
Allentown or Louisville or Providence
HybridFull Time
PPL Corporation
PPL CorporationNYSE: PPL: Provides electricity transmission, distribution, and utility services.
7+ YOEBachelor's degree (or equivalent), 7+ years experience (Lead) or 5+ years (Senior); strong software development background with C#, Java, JavaScript/TypeScript, front-end frameworks (Angular/React), APIs/JSON, and SQL; experience with microservices, cloud, containerization and Kubernetes preferred.
C#, Java, Python, JavaScript, TypeScript, Angular, React, SQL, JSON, APIs, Microservices, DevOps, Multi-Cloud, IoT, Intelligent Automation, RPA, Test automation, Machine Learning, Artificial Intelligence, Kubernetes, Azure Kubernetes Service (AKS), SAP ABAP
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2w
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Web Developer, Casino
Canada or Philadelphia or North America
$115k-$145k/yr RemoteFull Time
PENN Entertainment
PENN EntertainmentNASDAQ: PENN: Operates integrated casino gaming and online sports wagering platforms.
3+ YOE3+ years web development with JavaScript/TypeScript and React; strong CS fundamentals, HTML/CSS, REST/GraphQL, Git, automated testing, observability, and collaborative agile practices.
JavaScript, TypeScript, React, REST, GraphQL, Git, GitHub, HTML, CSS, Jest, Jasmine, Cypress, Playwright, GitHub Copilot, Claude, GCP, Kubernetes, Elixir, Absinthe
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3w
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Full Stack Developer
Parsippany or Conshohocken or Wilkes Barre or Alpharetta
$78k-$180k/yr HybridFull Time
Berkshire Hathaway GUARD Insurance Companies
Berkshire Hathaway GUARD Insurance CompaniesNYSE: BRK.B: Provider of commercial property and casualty insurance products.
Degree in computer science or equivalent experience; backend development (C#/.NET or similar); frontend frameworks (React/Angular/Vue); cloud (Azure); databases (SQL/NoSQL); Git, CI/CD, and experience with AI-assisted development tools (e.g., GitHub Copilot).
C#, .NET, React, Angular, Vue, Azure, SQL, NoSQL, Git, GitHub Copilot, ChatGPT, CI/CD, DevOps, OAuth, OpenID, Scrum, Kanban
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3w
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Staff Application Engineer
Philadelphia, Pennsylvania, United States
$153k-$180k/yr HybridFull Time
FMC
FMCNYSE: FMC: Manufacturer of chemical and biological crop protection products.
7+ YOEBachelor's in engineering/CS or related and 7 years software development experience, including 2 years each in web development, CI/CD, mobile app development, Python, JavaScript/React, system architecture, and leading projects; telecommute 2 days/week.
React Native, REST, ReactJS, Angular, Python, Django, CI/CD, JavaScript
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3w
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Junior Application Developer
Philadelphia or Pennsylvania or New Jersey or Delaware
$68k-$76k/yr RemoteFull Time
The Wistar Institute
The Wistar Institute: Independent biomedical research institute focusing on oncology and vaccines.
1+ YOEBachelor's in Computer Science (or equivalent experience), 1–3 years relevant web application development experience, proficiency with JavaScript/TypeScript, SQL/MSSQL, Node.js/Express, Vue.js or React, REST APIs, CI/CD and version control.
JavaScript, TypeScript, MSSQL, Node.js, Express, Vue.js, React, SQL, REST API, CI/CD
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3d
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Associate Software Developer
West Chester, Pennsylvania, United States
HybridFull Time
Venerable
Venerable: Manages and optimizes legacy variable annuity business blocks.
1+ YOE1+ years professional experience in AI/ML and micro-service systems; proficiency with AWS services, Python, C#, ML libraries, and enterprise software development practices.
SageMaker, Lambda, EC2, S3, EFS, SNS, SQS, EventBridge, Kinesis, Aurora, DynamoDB, RDS Proxy, Glue, Athena, Redshift, AWS Step Functions, AWS CodePipeline, Python, TensorFlow, PyTorch, scikit-learn, C#, PowerShell, SQL, JavaScript, UML, Docker, Git, GitHub, Jenkins, Bamboo, TeamCity, SpecFlow, Cucumber, Protobufs, Thrift, Avro, JSON, ODBC, Kafka, Angular, React
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2mo
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Knowledge Solutions Senior Developer
Philadelphia, Pennsylvania, United States
HybridFull Time
Morgan Lewis
Morgan Lewis: Global law firm providing legal services to corporate clients.
6+ YOE6–8+ years frontend development; strong JavaScript/TypeScript; React; GraphQL; production-grade apps; REST/GraphQL APIs; Agile teamwork; autonomous, high-quality code.
React, TypeScript, GraphQL, REST, Jest, Git, Azure, SPFx, SharePoint Online, Azure App Insights, CI/CD
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4d
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Engineer 3, Software Development & Engineering-8710
Philadelphia, Pennsylvania, United States
HybridFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
2+ YOEBachelor's in CS/Engineering or equivalent and 2 years developing front-end software with React, TypeScript, JSON, Git, Webpack/NPM/Vitejs, unit testing, Sitecore, and REST/GraphQL APIs.
React, TypeScript, JSON, Agile, Scrum, Kanban, Git, Webpack, NPM, Vitejs, JavaScript, Sitecore, NodeJS, GraphQL
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3mo
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Software Engineer
Omaha or San Francisco or Denver or Atlanta or Chicago or Seattle or New York or Philadelphia or Dallas or Los Angeles or Boston
OnsiteFull Time
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
Bachelor's degree or equivalent experience; hands-on web and backend development using modern frameworks; familiarity with REST/JSON, relational and non-relational databases, cloud deployment, CI/CD, and collaborative Git workflows.
JavaScript, TypeScript, React, Next.js, .NET Blazor, .NET Core, Node.js, HTML, CSS, RESTful APIs, JSON, Azure, GCP, Vercel, Git, CI/CD, BIM, AI, machine-learning
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1mo
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Full Stack Developer
United States or Philadelphia
$160k-$180k/yr RemoteFull Time
SMB Team
SMB Team: Provides digital marketing and coaching services for law firms.
6+ YOE6+ years full-stack development experience; must show portfolio; autonomous; current on AI tooling; proficiency in JavaScript/TypeScript (React, Node.js), RESTful APIs, GraphQL, cloud (AWS/GCP/Azure), serverless; experience with AI APIs and Git.
JavaScript, TypeScript, React, Node.js, RESTful APIs, GraphQL, AWS, GCP, Azure, Serverless, OpenAI, Anthropic, Git, GitHub, CI/CD, HubSpot, Asana, PandaDoc, Slack, Google Workspace
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1w
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Associate Full Stack Developer
Villanova, Pennsylvania, United States
$72k-$90k/yr HybridFull Time
Villanova University
Villanova University: Private Catholic research university providing higher education and research.
0+ YOEFoundational web development skills with 0–2 years experience. Familiarity with JavaScript/HTML/CSS, APIs, accessibility, and web performance. Strong communication, problem-solving, and willingness to learn AEM, cloud delivery, and integrations.
Adobe Experience Manager (AEM), AEM as a Cloud Service, AEM Edge Delivery Services, Modo Labs, OneCampus, Google Analytics, Google Tag Manager, React, Java
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2w
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Software Engineer II
Exton or Philadelphia
HybridFull Time
Bentley Systems
Bentley SystemsNASDAQ: BSY: Software for designing, building, and operating global infrastructure.
5+ YOE5+ years frontend development with TypeScript and React, experience with 3D/web graphics (Cesium/WebGL/three.js) preferred, testing (Vitest/Jest, Playwright), agile/Scrum, strong communication, graduate degree or equivalent experience.
TypeScript, React, iTwin.js, Cesium, pnpm, Module Federation, Vitest, React Testing Library, Playwright, Jest, Azure DevOps, CI/CD, GitHub, GitHub Copilot, Git, WebGL, three.js
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2mo
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Software Developer | C# | ETF | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading firm specializing in proprietary financial markets.
3+ YOE3+ years software development in object-oriented languages (Python, JavaScript/TypeScript, C++). BS/MS in CS/CE or related field. Visa sponsorship available.
Python, JavaScript/TypeScript, C++, React, Linux
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2mo
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Software Developer | C# | ETF | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading and market making firm.
3+ YOE3+ years software development; BS or MS in Computer Science, Computer Engineering or similar; proficient in Python and JavaScript/TypeScript; experience with C++ and React; visa sponsorship available.
Python, JavaScript, TypeScript, C++, React, Linux
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1mo
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Lead Software Engineer
Bethlehem or Holmdel
$99k-$163k/yr HybridFull Time
Guardian Life
Guardian Life: Provides life, disability, dental, and vision insurance products.
10+ YOE3+ Mgmt10+ years software development (3+ years lead); expertise in C#, .NET Core, React/Next.js, APIs/REST, SQL, AWS, CI/CD, Docker/ECS/EKS, Git/BitBucket/GitHub, Splunk, AppDynamics; microservices and Agile experience.
React, Next.js, C#, .NET Core, JavaScript, HTML5, CSS, REST, WCF, SOAP, SQL, Splunk, AppDynamics, JSON, XML, BitBucket, GitHub, CI/CD, AWS, ECS, Docker, EKS, Kanban, Scrum, Scaled Agile
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2mo
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Sr. Software Engineer
Philadelphia or New Jersey or Delaware or New York or Maryland or Florida or South Carolina or Texas or Virginia or Georgia
HybridFull Time
FreedomPay: A fast-growing payments and commerce technology delivering secure solutions globally.
7+ YOE7+ years in application development and testing; strong web, SPA, and backend skills; security-focused; Agile experience; strong English communication.
.NET, SQL Server, MVC, jQuery, React, Angular, Redux, TypeScript, JWT, Git, HTML, CSS, Websockets
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6d
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Senior Software Engineer – Mobile Development (Android)
Philadelphia, Pennsylvania, United States
$105k-$110k/yr OnsiteFull Time
City of Philadelphia
City of Philadelphia: Provides municipal services and governance to the city of Philadelphia.
5+ YOE5+ years Android development experience with Kotlin, Jetpack/Compose, Play Store deployment, REST API integration, strong problem-solving and communication; bachelor\u0002s degree required or equivalent experience.
Kotlin, Jetpack Compose, Coroutines, Android Studio, Gradle, Android SDK, Google Play Console, Git, NodeJs, TypeScript, React Native, SQL, PostgreSQL, Oracle, MSSQL, Amazon Web Services (AWS)
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2mo
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Principal Software Engineer
Dresher or Philadelphia
OnsiteFull Time
Ascensus
Ascensus: Administers tax-advantaged retirement and education savings plans.
Bachelor's degree in computer science or engineering; strong technical leadership; AI tooling experience; hands-on software development; Agile experience; excellent problem-solving and communication skills.
C, C++, Python, Apache, Nginx, Redis, jQuery, PowerShell, React, Docker, Kubernetes, CI/CD, TDD, Agile
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2w
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Software Engineer - Unity (Remote)
Princeton or United States
$84k-$97k/yr RemoteFull Time
Lingraphica
Lingraphica: Provides communication devices and therapy software for speech impairments.
3+ YOEBachelor's or equivalent experience, 3+ years software engineering, proficiency with Unity and C#, REST API development (Node.js), Git/GitHub, Agile; willing to travel within the U.S. up to twice per year.
Unity, C#, REST APIs, Node.js, Git, GitHub, AWS, Vercel, React Native, Generative AI, LLMs, AI APIs, Python, PostgreSQL, Firebase, Jira, Confluence, CI/CD, testing frameworks
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