18 senior react developer jobs at 14 companies in Mount Joy, PA
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Mobile Architect (React Native)
Malvern or Charlotte
HybridFull Time
8+ YOE8+ years related experience with 3+ years technology architect experience; strong expertise in React Native, TypeScript, cross-platform iOS/Android development; proven architecture and stakeholder influence skills.
React Native, TypeScript, React, AWS, DevOps, CI/CD
1mo
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SENIOR SOFTWARE DEVELOPER/ENGINEER (CLOUD/CYBER)
Huntsville or Aberdeen or Colorado Springs or Crestview or Tupelo
OnsiteFull Time
7+ YOEBS in CS/Software Eng or equivalent, 7+ years software development experience, DoD Top Secret/SCI eligibility, experience with Python, containers, AI/LLMs, databases, Linux, AWS, and Agile/Scrum.
LLMs, Ollama, LM Studio, Python, C#, Go Lang, React, JavaScript, HTML, CSS, Git, Docker, Bash, TensorFlow, PyTorch, SQL, MongoDB, PostgreSQL, Redis, Linux, AWS, RESTful API, Agile/Scrum
2w
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Software Developer
Exton or Philadelphia
RemoteFull Time
5+ YOE5+ years professional software development experience with C# and .NET; experience with React, TypeScript, SQL Server, PostgreSQL, Docker, testing tools, and CI/CD; bachelor's degree or equivalent experience preferred.
C#, .NET, React, SQL Server, PostgreSQL, ASP.NET Core, Entity Framework Core, TypeScript, Testcontainers, Playwright, Docker, Docker Compose, GitHub Actions, xUnit, Bicep, Azure Container Apps, Kubernetes
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Software Engineer II
Exton or Philadelphia
HybridFull Time
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
2w
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Senior Full Stack Data Engineer
West Chester, Pennsylvania, United States
OnsiteFull Time
7+ YOEBachelor's preferred,5+ years full-stack/data engineering experience (7+ preferred),backend and frontend development,Power BI dashboards,API and microservices,Oracle/Mongo DB,Cloud Foundry,GitHub,ELK,Agile with Jira.
Power BI, Jira, Smartsheet, Java, Python, Node.js, React, Angular, Tailwind CSS, DotNet, REST, API Gateway, Mongo DB, Cloud Foundry, GitHub, GitHub Actions, ELK, Agentic AI, Open Spec SDD
2w
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Application Engineer - III, Secure Site
Malvern, Pennsylvania, United States
HybridFull Time
5+ YOEMinimum 5 years related experience with at least 1 year development; undergraduate degree or equivalent; experience with React, TypeScript, microfrontends, APIs, AWS, observability and CI/CD; strong communication and technical leadership.
React, TypeScript, Stencil, AEM Content Fragments, REST, GraphQL, Supergraph, Java, Angular, Nest.js, AWS, Splunk, Honeycomb, Grafana, DynamoDB, CoPilot, Claude, CI/CD
2w
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Software Engineer I
Reading or Tampa
OnsiteFull Time
Penske Truck Leasing: Provides commercial truck leasing, rental, and vehicle maintenance services.
5+ YOEBachelor's in CS/CE or equivalent, 5+ years programming (Java, RPG, etc.), full‑stack experience (React/Angular/HTML/CSS/JavaScript), REST/myBatis/Spring, relational DB design, Agile, and strong communication.
Java, RPG, React, Angular, jQuery, HTML, JavaScript, CSS, Spring framework, Spring-MVC, myBatis, RESTful API’s, Agile, DevOps Tools, CI/CD
1mo
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CRM Developer
Cockeysville or Hunt Valley
$115k-$125k/yr HybridFull Time
5+ YOEBachelor's in CS/IS, 5+ years software engineering/CRM development (3+ years Dynamics 365), strong .NET/C#, SQL, JavaScript/TypeScript, Power Platform, Azure, REST/SOAP integrations, and collaboration skills.
Microsoft Dynamics 365 CRM, Microsoft Dataverse, Microsoft Power Platform, Microsoft Power Apps, Microsoft Power Automate, Microsoft Power BI, .NET, C#, SQL Server, T-SQL, JavaScript, TypeScript, HTML, CSS, REST APIs, SOAP, Azure Functions, Logic Apps, Service Bus, Azure DevOps, Git, Microsoft Graph, Microsoft Entra ID (Azure AD), Angular, React, CI/CD, Codex, ChatGPT, CoPilot, Foundry
4w
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Sr. Software Developer
Mechanicsburg, Pennsylvania, United States
$100k-$105k/yr OnsiteContract
10+ YOE10+ years professional software development experience; strong expertise with C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript and modern front-end frameworks, SQL/Entity Framework, microservices, messaging, Git; U.S. citizen with current T3 investigation; onsite work required.
C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript, React, Angular, SQL, Entity Framework, NServiceBus, RabbitMQ, Git
1w
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Software Engineer
Hunt Valley, Maryland, United States
$86k-$115k/yr HybridFull Time
5+ YOEBachelor's degree in computer science or related field, 5+ years software engineering experience, API and full-stack development experience, familiarity with Agile, testing, and cloud paradigms.
.NET (C#), SQL, HTML, CSS, JavaScript, NodeJS, Angular, React, Vue, Azure DevOps, Git, MS SQL Server, Typescript, REST API, HTTP, Java
3d
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Software Engineer II
Newark, Delaware, United States
OnsiteFull Time
5+ YOEBachelor's degree or equivalent experience and 5+ years of software development experience, with Java, Spring, REST, testing, DevOps, distributed systems, and application monitoring expertise.
Java, J2EE, Spring MVC, Spring Framework, Spring Boot, Spring Security, Spring Integration, Spring Data JPA, SOAP, REST, JSON, Handlebars, Foundation, ReactJS, XML, JAXB, Jackson, Gson, JUnit, Git, Maven, Nexus, Eclipse, Bitbucket, Splunk, Dynatrace, WebSphere MQ, ActiveMQ, JVM, Groovy
3d
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Software Engineer II
Newark, Delaware, United States
OnsiteFull Time
5+ YOERequires 5+ years of software development, a bachelor's degree or equivalent experience, Java/J2EE, Spring frameworks, REST/JSON, front-end technologies, testing, version control, monitoring, and distributed systems experience.
Spring MVC, Spring Framework, Spring Boot, Spring Security, Spring Integration, Spring Data JPA, SOAP, REST, JSON, Handlebars, Foundation, ReactJS, XML, JAXB, Jackson, Gson, JUnit, Git, Maven, Nexus, Eclipse, Bitbucket, Splunk, Dynatrace, WebSphere MQ, ActiveMQ, JVM, Groovy, Java, J2EE
5d
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Sr Staff Fullstack Developer (Frontend focused)
Exton or Boulder or Huntsville or Dayton
$136k-$204k/yr OnsiteFull Time
4+ YOEBachelor's with 8 years, master's with 6, or PhD with 4; front-end and back-end development expertise, cloud deployment, web components, Git, Agile, and testing experience.
HTML5, CSS3, JavaScript, React, Angular, C#, Java, Python, Node.js, Docker, Kubernetes, AWS, Microsoft Azure, Git, Jasmine, Karma, Jest, Vitest, Ansys
2d
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Delivery Senior Consultant, Software Engineering Solutions
Gilbert or Lake Mary or Mechanicsburg or Atlanta or Charlotte or Dallas or Houston or Philadelphia
HybridFull Time
4+ YOEBachelor’s degree and 4+ years developing front-end applications with HTML, CSS, JavaScript, React or Angular; experience with identity workflows, UI tools, accessibility standards, and government or enterprise security requirements.
HTML, CSS, JavaScript, React, Angular, Figma, Adobe XD, SAML, OAuth, OpenID Connect, WCAG, NIST
1w
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Software Development Manager
Sparks, Maryland, United States
$165k-$180k/yr HybridFull Time
8+ YOE3+ Mgmt8+ years software development, 3+ years people management, hands-on with JavaScript/TypeScript, React, Node.js, CI/CD, cloud operations; strong leadership, communication, and incident response skills.
JavaScript, TypeScript, React, Node.js, Express, HTML, CSS, REST APIs, MongoDB, SQL Server, MySQL, PostgreSQL, Microsoft Azure, Linux, Git, SFTP, CI/CD
1mo
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AI Solutions Architect
Kennett Square or Pennsylvania
HybridFull Time
5+ YOEBachelor's in CS/IS/Engineering or equivalent, 5+ years in solutions/enterprise architecture, experience with Azure cloud services, Python, C#/.NET, TypeScript/React, OAuth2/OIDC, LLM integration patterns, CI/CD (GitHub Actions), and strong communication.
Onyx, Python, FastAPI, Azure, App Service, Functions, Cosmos DB, Blob Storage, C#, .NET, PostgreSQL, TypeScript, React, OAuth 2.0, OpenID Connect (OIDC), GitHub Actions, CI/CD, large language model (LLM)
2mo
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Computer Scientist (Job #718)
Aberdeen, Maryland, United States
OnsiteFull Time
8+ YOEActive DoD security clearance, Bachelors in CS/CE/Data Science, 8+ years experience, prior military or DoD program experience, DevSecOps familiarity, strong software development and integration skills.
React, React Native, HTML, JavaScript, TypeScript, eCharts, D3, PowerBI, Python, FastAPI, SQL, SQLite, Vantage, Foundry
2mo
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Customer Relationship Management (CRM) Lead
Harrisburg, Pennsylvania, United States
OnsiteContract
10+ YOE10+ years Microsoft CE and CRM implementation experience; 10 years developing with .NET, JavaScript, Python, React, SSIS, and Reporting Services; FastTrack solution architect experience; Azure AI/ML and Copilot experience; data migration and integrations expertise; team leadership and documentation skills.
SAP BRIM, Microsoft Dynamics CE, Microsoft CE, .NET, JavaScript, Python, React, SSIS, Reporting Services, Azure AI, Machine Learning, Copilot, Microsoft Dynamics CRM, Dynamics Contact Center, Microsoft ADO Testing Module, Power Apps, CoPilot Studio, Microsoft D365 CE
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