45 senior react developer jobs at 28 companies in Caseyville, IL
1mo
Save
Mark Applied
Hide
Mobile Engineer - React Native
St. Louis, Missouri, United States
$90k-$176k/yr HybridFull Time
10+ YOE10+ years software engineering experience, 5+ years React Native/JS/TypeScript, mobile architecture, offline-first, native Android/iOS skills, CI/CD and security, bachelor's degree preferred.
React Native, React, JavaScript, TypeScript, GraphQL, Firebase, GitHub Actions, Azure DevOps, Fastlane, Jenkins, Kotlin, Java, Swift, Objective C, AWS, Azure, Google Cloud
2mo
Save
Mark Applied
Hide
Senior Software Engineer
O'Fallon, Missouri, United States
$115k-$184k/yr OnsiteFull Time
Bachelor's degree in computer science/engineering or equivalent, strong Java stack, AWS cloud, SQL/NoSQL, front-end (React/Angular), PCI/GLBA/compliance knowledge, strong communication and problem-solving.
Java, Java EE, JSP, Servlets, Spring, Hibernate, Oracle, SQL Server, MySQL, PostgreSQL, MongoDB, SQL, NoSQL, REST, SOAP, WebSphere, JBOSS, Tomcat, HTML, JavaScript, JQuery, UNIX, XML, XSLT, CSS, CSharp, React, Angular, Maven, Gradle, Jenkins, Chef, Sonar, MongoDB, AWS, EC2, ECS, S3, RAD/Eclipse
2w
Save
Mark Applied
Hide
Senior Developer
Calgary or Orlando or Edmonton or Scottsdale or Pittsburgh or Toronto or Raleigh or Columbus or Charleston or Vancouver or Winnipeg or Ottawa or Phoenix or Halifax or St. Louis or Moncton
$160k-$200k/yr RemoteFull Time
4+ YOE4+ years Ruby on Rails experience, front-end fundamentals (JavaScript, React), strong SQL and data skills, background with scale/concurrency, testing practice, and Agile experience.
Ruby on Rails, JavaScript, React, React Native, SQL, Git, GitHub, Jira
3w
Save
Mark Applied
Hide
Developer
St Louis, Missouri, United States
OnsiteFull Time
5+ YOE5+ years software development experience, proficiency in full-stack OOP (C#, Java), relational databases, HTML/CSS/JavaScript and React, Git, RESTful API development, and Agile methodologies.
C#, Java, SQL, PostgreSQL, HTML, CSS, JavaScript, React, RESTful API, Git, Scrum, Kanban, Azure, AWS, CI/CD, DevOps
3w
Save
Mark Applied
Hide
Senior Python Developer
Fenton, Missouri, United States
OnsiteFull Time
5+ YOE5+ years software development experience with 3+ years Python; experience with RESTful APIs, databases, cloud platforms, testing, CI/CD, containerization, and mentoring.
Python 3.x, Django, Flask, FastAPI, RESTful APIs, PostgreSQL, MySQL, SQL Server, MongoDB, Redis, Git, GitHub Actions, Jenkins, Docker, Kubernetes, AWS, Azure, GCP, pytest, unittest, TensorFlow, PyTorch, scikit-learn, React, Vue.js, JavaScript
5d
Save
Mark Applied
Hide
Senior Full Stack Engineer
St. Louis or Alpharetta
HybridFull Time
5+ YOEBachelor's or equivalent,5-7 years software development experience building full-stack cloud-native applications; front-end and back-end expertise; cloud, containerization, IaC, CI/CD, SQL/NoSQL experience; Generative AI and AI-assisted development experience preferred; must have work authorization (no sponsorship).
GitHub Copilot, Gemini, Claude, ChatGPT, Llama, Java, Python, Node.js, React, Angular, Vue.js, HTML5, CSS3, TypeScript, Google Cloud Platform, GCP, AWS, Azure, Docker, Kubernetes, Terraform, CloudFormation, GitHub Actions, Jenkins, GitLab CI, Spanner DB, Alloy DB, PostgreSQL, MySQL, MongoDB, DynamoDB, Firestore, JIRA, Confluence, GitHub, Maven, Gradle, JUnit, Mockito, Playwright, Jasmine, Celenium
1mo
Save
Mark Applied
Hide
Software Developer - Advanced (MO, Saint Louis)
St. Louis, Missouri, United States
OnsiteFull Time
Requires RMF knowledge, experience with Python, HTML, CSS, JavaScript, React, Tableau, database development, and secure full‑stack software development; baccalaureate degree required.
Python, HTML, CSS, JavaScript, React, Tableau
1mo
Save
Mark Applied
Hide
Senior Developer (St. Louis)
United States or St. Louis
$106k-$133k/yr RemoteFull Time
5+ YOERequires permanent U.S. work authorization; Bachelor's or equivalent; 5+ years full-stack experience with Node.js and Vue.js; CI/CD, Kubernetes, GitHub, and AI coding tool experience; strong communication and mentoring skills.
Node.js, Vue.js, Apache Solr, MongoDB, PostgreSQL, Oracle, RabbitMQ, Kubernetes, OpenShift, Model Context Protocol (MCP), GitHub, GitHub Actions, Jenkins, Codefresh, Docker, Ansible, Prometheus, Grafana, Splunk, Redis, Apache Solr, Claude, GitHub Copilot, Microsoft 365 Copilot, Windsurf, Java, Grails, Python, Go, React, OpenAPI/Swagger, Linux/Unix, Shell scripting, Backstage
1mo
Save
Mark Applied
Hide
Software Engineer
Maryland Heights, Missouri, United States
$105k-$128k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent, ability to obtain U.S. Secret Clearance, 5+ years software development experience with JavaScript/TypeScript/React and C# or C++, REST API experience, Agile/Jira experience.
JavaScript, TypeScript, React, C#, C++, REST, Jira, Jira Align, Azure Devops, Git, .NET MAUI, SAFe Agile
1mo
Save
Mark Applied
Hide
Software Engineer
Maryland Heights, Missouri, United States
$105k-$128k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent; 5+ years software development with JavaScript/TypeScript/React/C#/C++; experience with REST APIs, Agile/SAFe, Jira/Azure Devops, Git; ability to obtain U.S. Secret Clearance.
JavaScript, TypeScript, React, C#, C++, REST, SAFe, Jira, Jira Align, Azure Devops, Git, .NET MAUI
2mo
Save
Mark Applied
Hide
Application Development Senior Advisor
St. Louis, Missouri, United States
RemoteFull Time
5+ YOESenior advisor for conversational AI development with IVR and large enterprise experience; strong Java, frontend, and cloud skills; able to work remotely.
Genesys, Java, VXML, Jira, Confluence, Spring, Springboot, JavaScript, Hibernate, RestAPI, Microservices, MongoDB, Kafka, RabbitMQ, Redis, PostgreSQL, Oracle SQL, HTML, ReactJS, AWS, Kubernetes, Jenkins, JUnit, EasyMock, Mockito, Graphite, Splunk, Grafana, KORE Platform, Nuance
3mo
Save
Mark Applied
Hide
Software Engineer - Frontend
Florissant, Missouri, United States
OnsiteFull Time
Extensive experience building frontend architecture and design systems; React/Next.js web, React Native/Expo mobile; UI/UX optimization; scalable deployments; AI/SEO integration.
React, Next.js, React Native, Expo, Tailwind CSS, LaunchDarkly, New Relic, Mixpanel, Mux, Cloudflare Pages, Vercel, AWS Amplify, ECS, Fargate, EC2, S3, CloudFront, AI/SEO tooling
1mo
Save
Mark Applied
Hide
Web Software Developer
Scott Air Force Base, Illinois, United States
$120k-$160k/yr OnsiteFull Time
10+ YOE10+ years experience, DoD Top Secret with SCI eligibility, CompTIA Security+, experience with Node.js, React, Strapi, AWS, AppStream, Confluence, JavaScript, HTML, CMS, and technical writing.
Node.js, React, AppStream, Confluence, JavaScript, HTML, Strapi, AWS, ServiceNow, Jira, Microsoft Word, Microsoft PowerPoint, Microsoft Visio, Microsoft Project, Microsoft Excel
1mo
Save
Mark Applied
Hide
AWS Full Stack Engineer
Springfield or Reston or Arnold
$99k-$225k/yr OnsiteFull Time
5+ YOE5+ years full-stack and enterprise application development; 2+ years AWS and IaC experience; proficiency with React/Vue, backend languages (Java, Python, Go, C++), JavaScript/TypeScript, containerization, and cloud-native patterns; TS/SCI clearance required.
React, Vue, Java, Python, Go, SQL, C++, JavaScript, TypeScript, HTML, CSS, AWS, ECS, Lambda, SQS, SNS, EC2, RDS, DynamoDB, IAM, AWS CDK, Terraform, CloudFormation, Docker, Kubernetes, MongoDB, API Gateway
1mo
Save
Mark Applied
Hide
Web Software Developer
Scott AFB, Illinois, United States
OnsiteFull Time
10+ YOE10+ years experience, DoD Top Secret clearance with SCI eligibility, CompTIA Security+, Node.js/React/JavaScript/HTML, Strapi CMS, AWS, AppStream, Confluence, MS Office proficiency, technical writing, and configuration/change management for government customers.
Node.js, React, AppStream, Confluence, JavaScript, HTML, Strapi, AWS, Microsoft Word, Microsoft PowerPoint, Microsoft Visio, Microsoft Project, Microsoft Excel, ServiceNow, Jira
3mo
Save
Mark Applied
Hide
Senior Agentic AI UI Devleoper
Springfield or Saint Louis
$148k-$267k/yr OnsiteFull Time
10+ YOE10+ years software development; 5+ years web services/UI; BS in CS or related field; JavaScript and Python; RESTful APIs; XML/Java; Secret clearance; Python and AI integration experience.
JavaScript, Python, REST, XML, Java, React, Vue, Angular
3w
Save
Mark Applied
Hide
Lead Software Engineer
O'Fallon, Missouri, United States
HybridContract
Bachelor's in CS/IS, strong full-stack Java, API, Angular, React skills; experience with Agentic frameworks, MCP and LLM integrations; Qlik Sense and data architecture experience; strong analytical and communication skills.
Java, APIs, Angular, React, Agentic Frameworks, MCP, LLMs, Qlik Sense, Tableau, Power BI, WebFocus, Hadoop, Kafka
1mo
Save
Mark Applied
Hide
SDC Java Software Developer---Senior---St. Louis (St. Louis, MO, US, 63105)
St. Louis, Missouri, United States
$67k-$137k/yr HybridFull Time
3+ YOEBachelor's in CS or related, minimum 3 years software development experience; back-end Java/Python/Node.js, REST, NoSQL, microservices, cloud (AWS/Azure); front-end React/Angular; API design, Git and CI/CD, TDD/BDD, agile.
Java, Python, Node.js, REST, NoSQL, Microservices, Serverless, AWS, Azure, React, Angular, Git, CI/CD, Akka, Scala, Kafka, RabbitMQ, ElasticSearch, AngularJS, ReactJS, Hadoop, Spark, Flume, Mongo, Cassandra, IaaS, PaaS, API Management, TDD, BDD
1mo
Save
Mark Applied
Hide
Sr. Engineer, Software - Archimedes
St. Louis or Brentwood or Alaska or Arizona or Arkansas or California or Connecticut or Delaware or Hawaii or Idaho or Louisiana or Maine or Massachusetts or Michigan or Mississippi or Montana or Nebraska or Nevada or New Mexico or New York or North Carolina or North Dakota or Oregon or Rhode Island or South Carolina or South Dakota or Texas or Utah or Vermont or Washington or West Virginia or Wyoming or United States
HybridFull Time
8+ YOEBachelor's in CS or related; 8+ years software engineering experience (5+ years with C#, .NET, React); experience with cloud-native, APIs, microservices, CI/CD, Git, Azure; technical leadership and mentoring experience.
C#, .NET, ASP.NET Core, React, TypeScript, JavaScript, REST APIs, GraphQL, Webhooks, API Management, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure Container Apps, Microsoft Azure Kubernetes Service (AKS), Microsoft Azure Storage, Microsoft Azure Databricks, Microsoft Azure Data Lake Storage Gen2, Microsoft Azure Synapse Analytics, Microsoft SQL Server, PostgreSQL, Microsoft Azure DevOps, GitHub Actions, CI/CD, Infrastructure as Code, Retrieval-Augmented Generation (RAG), Microsoft Azure OpenAI, Microsoft Azure AI Services, Intelligent Automation, Agent-Based Solutions, OWASP, OAuth2, OpenID Connect, DevSecOps, Git, Azure Repos, GitHub, TFS, Jira, Unix/Linux shell scripting
1mo
Save
Mark Applied
Hide
Geospatial Front End Developer – Multiple Positions at Junior/Mid/Senior Levels
St. Louis or St. Charles or Virginia
OnsiteFull Time
2+ YOEActive/current Top Secret/SCI clearance, US citizenship, Bachelor's in STEM, 2+ years front-end web experience with HTML5/CSS3/TypeScript/JavaScript, experience with React/Angular/Vue, strong communication and problem-solving skills.
HTML5, CSS3, TypeScript, JavaScript, React, Angular, Vue, Docker, Kubernetes, Azure, AWS, GCP, Esri
Explore Jobs