163 senior react developer jobs at 76 companies in Croydon, PA
2mo
Save
Mark Applied
Hide
React Developer_CVS_Woonsocket, RI
Woonsocket, Rhode Island, United States
$40k-$140k/yr OnsiteFull Time, Contract
Photon: A technology-focused professional services firm delivering scalable software solutions.
5+ YOE5+ years front-end experience; strong React, HTML/CSS/JS; state management; large-team experience; performance debugging.
React, TypeScript, JavaScript, HTML, CSS, Redux, Zustand, TanStack Query, Webpack, Vite, Module Federation
1w
Save
Mark Applied
Hide
Full stack developer (React)
Alpharetta or Berkeley Heights or New York City
OnsiteFull Time
Orion Innovation: Provides digital transformation, software engineering, and cloud services.
5+ YOE5+ years writing production code; backend experience with Python, Springboot, Java, REST APIS, Rails, or Laravel; required React; experience with product collaboration and writing tests.
Python, Springboot, Java, REST APIS, Rails, Laravel, React, Agile
2w
Save
Mark Applied
Hide
Lead Software Engineer - Python/React/AWS/AI
Wilmington, Delaware, United States
OnsiteFull Time
5+ YOE5+ years software engineering experience with system design, application development, SDLC, CI/CD, cloud-native systems, and applied AI-assisted development; strong Python, Java, React, and AWS skills.
Python, Java, React, AWS, AI
1mo
Save
Mark Applied
Hide
Senior Developer / Lead Developer
Allentown or Providence or Louisville
HybridFull Time
5+ YOEBachelor's degree, 5+ years software development experience (senior) or 7+ (lead); proficiency in C#, Java, TypeScript, frontend frameworks, APIs and SQL; experience with cloud, microservices, and emerging tech.
C#, Java, TypeScript, JavaScript, Python, Angular, React, SQL, Microservices, Cloud Architecture, APIs, SAP ABAP, SAP S/4HANA, Kubernetes, Azure Kubernetes Service (AKS), DevOps, RPA, Artificial Intelligence
1mo
Save
Mark Applied
Hide
Senior Mobile Developer
Alpharetta or Omaha or Berkeley Heights
$109k-$182k/yr OnsiteFull Time
5+ YOE5+ years mobile development; 4+ years with Kotlin and/or Swift and experience with React Native/JavaScript; strong mobile architecture, state management, RESTful APIs, CI/CD, Git; bachelor's degree or 6 years relevant experience; valid unrestricted U.S. work authorization.
Swift, Kotlin, React Native, JavaScript, RESTful APIs, Git, AWS, Azure, GCP, CI/CD
1mo
Save
Mark Applied
Hide
Senior AI Engineer
United States or Wilmington
$126k-$197k/yr RemoteFull Time
8+ YOEDegree in Computer Science/Engineering, 8+ years backend development with Python and JavaScript, 2+ years production GenAI systems experience, React/TypeScript UI skills, Pydantic proficiency, strong stakeholder communication.
Python, JavaScript, React.js, TypeScript, HTML, Pydantic, PyTorch, Azure, Azure Kubernetes, Office 365, GitHub
3d
Save
Mark Applied
Hide
Senior Software Engineer
Malvern, Pennsylvania, United States
HybridFull Time
6+ YOERequires 6–9 years developing web applications, 3+ years with Ruby, Linux, APIs, databases, testing, and security protocols. Preferred experience includes cloud, containers, DevOps, Jenkins, React, AWS, Redis, and JIRA.
Linux, Git, Ruby, JavaScript, JSON, XML, OpenAPI, SFTP, FTP, OAuth2, OIDC, SSL, SSH, LDAP, Ruby on Rails, Python, REST, GraphQL, SQL, NoSQL, PostgreSQL, Jenkins, Node.js, React, Rust, AWS, RabbitMQ, Kafka, Redis, JIRA, Kubernetes
2w
Save
Mark Applied
Hide
Senior Full Stack Engineer
Piscataway or Charlotte
OnsiteContract
Expertise in frontend and backend development (React, Next.js, Python, Go, Node.js), microservices on AWS, CI/CD, mentoring experience, and on-call support for production systems.
React, Next.js, Python, Go, Node.js, CI/CD, EKS, Lambda, API Gateway, Kubernetes, Amazon Bedrock, AWS
1w
Save
Mark Applied
Hide
Lead Full Stack Engineer (.Net, Vue/React) - Fully Remote
United States or Philadelphia
RemoteFull Time
8+ YOE2+ Mgmt8+ years full-stack experience, 2+ years leading teams, proficiency with .NET Core/C#, GraphQL, MongoDB, Docker, JavaScript and Vue.js/React, cloud platforms, TDD and DDD, strong communication and problem-solving.
.NET Core, C#, GraphQL, MongoDB, Docker, JavaScript, Vue.js, React.js, AWS, Azure, Google Cloud
5d
Save
Mark Applied
Hide
Senior Software Engineer, Frontend Platform
United States or San Francisco or New York City or Los Angeles or Boston or Seattle or Washington or San Diego or Chicago or Austin or Dallas or Portland or Denver or Philadelphia or Baltimore or Sacramento or Minneapolis or Miami or Atlanta or Phoenix or Orlando or Las Vegas or Salt Lake City or Madison or Birmingham or San Antonio or Spokane or Toronto
$125k-$210k/yr HybridFull Time
Significant production software experience with deep React and TypeScript expertise, full-stack fundamentals, mobile experience, design systems, Figma, and hands-on AI-assisted development.
React, TypeScript, React Native, Figma, Cursor, Claude, Storybook, style-dictionary, Framer Motion, Rive, Lottie, Expo
1d
Save
Mark Applied
Hide
Senior Developer, Equity Investment Management Systems
Malvern or Arizona or United Kingdom or Melbourne
HybridFull Time
8+ YOE8+ years of related experience, including 2+ years of development experience; undergraduate degree or equivalent; enterprise architecture and system design experience; Java, Spring Boot, Node.js, TypeScript, Angular or React, AG Grid, Nx, and AWS.
AWS, CI/CD, Java, Spring Boot, Node.js, TypeScript, Angular, React, AG Grid, Nx, DevOps
1d
Save
Mark Applied
Hide
Senior Developer, Equity Investment Management Systems
Malvern or Arizona or London or Melbourne
HybridFull Time
8+ YOE8+ years of related experience, including 2+ years in development; undergraduate degree or equivalent; enterprise architecture and system design experience; Java, Spring Boot, Node.js, TypeScript, Angular or React, AG Grid, Nx, APIs, distributed systems, and AWS.
AWS, CI/CD, DevOps, Java, Spring Boot, Node.js, TypeScript, Angular, React, AG Grid, Nx
1mo
Save
Mark Applied
Hide
Lead Developer
Allentown or Louisville or Providence
HybridFull Time
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
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Conshohocken, Pennsylvania, United States
$110k-$130k/yr OnsiteFull Time
6+ YOE6+ years full-stack software engineering experience with Node.js, React, SQL Server, Azure; strong SQL tuning, performance optimization, and production ownership from data layer to UI.
Node.js, React, SQL Server, Azure, Container Apps, Key Vault, Container Registry, Public Cloud Infrastructure, Microsoft Office Suite, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Git, Docker, CI/CD, Yardi Voyager, RealPage, LRO, Banner
16h
Save
Mark Applied
Hide
Senior Software Engineer
Atlanta or Austin or Baltimore or Boston or Charlotte or Chicago or Columbus or Dallas or Miami or Nashville or New York City or Philadelphia or Pittsburgh or Princeton or Raleigh or Tysons or Washington
$126k-$248k/yr RemoteFull Time
Full-stack engineering experience with scalable, highly available web applications and databases; collaboration and distributed-systems problem solving required. TypeScript, React, Node.js, WebSockets, Kubernetes, and microservices are advantageous.
MongoDB Atlas, MongoDB Compass, Atlas Data Explorer, TypeScript, React, Node.js, Kubernetes, AWS, Google Cloud, Microsoft Azure
1w
Save
Mark Applied
Hide
Senior Full Stack Developer (React + REST APIs + Dashboard Development).
Middletown, New Jersey, United States
$104k-$115k/yr HybridFull Time
7+ YOE7+ years experience building data and GenAI solutions using Python, Spark, Databricks, LLM pipelines, LangChain, and cloud data platforms (Azure, Snowflake, PostgreSQL).
Python, Spark, Databricks, Delta Lake, Snowflake, PostgreSQL, LangChain, LangGraph, OpenAI, Azure OpenAI, Hugging Face, Docker, CICD, Azure, GCP, Model Context Protocol (MCP)
1mo
Save
Mark Applied
Hide
Senior Software Engineer | Research Tech | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
5+ YOE5+ years software engineering experience with C#, Python, and React; full-stack development; strong communication; Bachelor’s in CS/engineering/math/physics or related.
C#, .NET, Python, React, JavaScript
1d
Save
Mark Applied
Hide
Senior AI Integration Developer
Red Bank or Basking Ridge or Silver Spring
$112k-$179k/yr OnsiteFull Time
8+ YOERequires 8 years' experience with a bachelor's, 6 with a master's, or 3+ with a PhD; Python, MCP, local models, Docker, React, TypeScript/Node.js, Git, CI/CD, testing, and ability to obtain Secret clearance.
Ollama, Model Context Protocol (MCP), llama.cpp, FastAPI, React, PostgreSQL, Python, TypeScript, Node.js, Docker, Git, CI/CD, LangChain, LangGraph, FastMCP, RAG
20h
Save
Mark Applied
Hide
Senior AI Integration Developer
Red Bank or Basking Ridge or Silver Spring
$112k-$179k/yr OnsiteFull Time
8+ YOERequires 8 years' experience with a bachelor's, 6 with a master's, or 3+ with a PhD; Python, FastAPI, Docker, TypeScript/Node.js, React, Git, MCP, and local model experience; U.S. citizenship and Secret clearance eligibility.
Ollama, llama.cpp, Model Context Protocol (MCP), Python, FastAPI, Docker, TypeScript, Node.js, React, Git, CI/CD, LangChain, LangGraph, FastMCP, RAG, PostgreSQL
1w
Save
Mark Applied
Hide
Senior Software Engineer
Bethlehem or New York City or Holmdel
$95k-$156k/yr HybridFull Time
5+ YOEBachelor's in CS/Engineering,5+ years professional software development,experience with cloud-native architectures,Java/Springboot,APIs/microservices,CI/CD,TDD,monitoring,CI tools and AWS.
Java, Springboot, Aurora PostgresSQL, Redis, Hibernate, Microsoft Graph API, Github Co-pilot, Claude, AWS, Docker, EKS, SNS/SQS, SDK, Bitbucket, Git, AppDynamics, ArgoCD, CloudWatch, Splunk, Zenoss, Python, ReactJS, Apache Camel, FINEOS
Explore Jobs