189 senior react developer jobs at 107 companies in Louisville, CO
1mo
Save
Mark Applied
Hide
Senior React Developer/Architect
Centennial, Colorado, United States
$99k-$172k/yr HybridFull Time
10+ YOE10+ years front-end experience with React and TypeScript; expertise in front-end architecture, Node.js, Express.js, Next.js, AEM/Sitecore, testing (Jest/Cypress), Webpack, state management, and CI/CD.
React, TypeScript, Node.js, Express.js, Next.js, Adobe Experience Manager (AEM), Sitecore, Material UI, GraphQL, Jest, Cypress, React Testing Library, Webpack, Redux, Zustand, Recoil, CI/CD, Storybook, SASS, JavaScript
3w
Save
Mark Applied
Hide
Senior Software Engineer
Denver, Colorado, United States
$130k-$150k/yr HybridFull Time
10+ YOE10+ years software development experience, 4+ years in senior roles. Strong .NET Core/.NET Framework, React/Angular, SQL Server, AWS, CI/CD experience; Bachelor's in STEM required; experience with AI coding tools preferred.
.NET Core, .NET Framework, React, Angular, SQL Server, AWS, CI/CD, Terraform, Datadog, GraphQL, ElasticSearch, Claude, GitHub Copilot, Cursor, Playwright, Model Context Protocols (MCP)
3mo
Save
Mark Applied
Hide
Senior Software Engineer
Denver, Colorado, United States
$143k-$183k/yr HybridFull Time
5+ YOE5+ years of software development; strong Node.js; AWS; Kubernetes; Datadog; microservices; relational and NoSQL databases; Bachelor's degree in CS or related field.
Node.js, Docker, Kubernetes, AWS, Datadog, Angular, React, Web Components, Kafka, SQL, NoSQL
1mo
Save
Mark Applied
Hide
Senior Software Engineer
Denver or United States
$120k-$160k/yr HybridFull Time
Experience building production-grade applications with Node.js and TypeScript, REST/GraphQL services, React/Next.js, AWS and container deployments; automated testing and AI-native workflows; senior technical leadership and mentoring.
Node.js, TypeScript, RESTful, GraphQL, React, Next.js, AWS, Docker, Fargate, Kubernetes, Playwright, LiteLLM, Python, Java, PostgreSQL, SNS, SQS, Lambda
3mo
Save
Mark Applied
Hide
Senior Security Engineer
Austin or Chicago or Dallas or Denver or Los Angeles or San Diego or San Francisco
$131k-$169k/yr HybridFull Time
4+ YOESenior Security Engineer with 4+ years in security or development; strong communication; cloud and AI experience; hands-on with security tooling and threat modelling.
DotnetCSharp, JavaScript, React, EmberJS, Python, Azure, AWS, GCP, PowerShell, Bash, GitHub Copilot, Burp Suite
3w
Save
Mark Applied
Hide
Senior Software Engineer, Offers
Denver, Colorado, United States
$125k-$155k/yr HybridFull Time
Experience leading development teams, mentoring developers, cloud platform experience, knowledge of React, Typescript, Go/Golang, SQL and Kafka; strong problem-solving and delivery focus.
Go, Typescript, React, SQL, Kafka, GCP, C#, .net, MSSQL, WPF
1d
Save
Mark Applied
Hide
Frontend Software Engineer - Senior (TS Clearance)
Denver, Colorado, United States
OnsiteFull Time
Senior frontend engineering experience with modern web development, JavaScript, RESTful APIs, Git/GitHub, agile methods, and Angular or React; active Top Secret clearance required and TS/SCI with Poly eligibility.
HTML5, CSS3, LESS, SASS, Bourbon, Twitter Bootstrap, JavaScript, jQuery, Backbone.js, Ember.js, D3, RESTful APIs, Git, GitHub, Rails, Express, Django, Angular, React, Java, Kubernetes, Docker, Jenkins, Puppet, SAFe, Scrum, Lean
1d
Save
Mark Applied
Hide
Senior Software Engineer
Denver, Colorado, United States
$145k-$165k/yr HybridFull Time
5+ YOEBachelor's degree or equivalent practical experience; 5–7+ years developing production-scale SaaS applications, full-stack systems, APIs, and cloud solutions using Node.js, React, .NET/C#, and TypeScript.
Node.js, React, .NET, C#, TypeScript, AI, GenAI, CI/CD, DevOps
1d
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
4d
Save
Mark Applied
Hide
Senior Software Engineer
Aurora, Colorado, United States
$110k-$164k/yr HybridFull Time
5+ YOEBachelor's degree and 5+ years related experience; strong skills in ASP.NET,C#,Node.js,React,Azure; experience with EMR not mentioned; on-call support and production troubleshooting experience.
ASP.NET, C#, Node.js, React, Azure, GitHub Copilot, Claude Code, Retrieval Augmented Generation (RAG)
1mo
Save
Mark Applied
Hide
Senior Full Stack Product Engineer
Denver, Colorado, United States
OnsiteFull Time
Senior full-stack engineer with experience shipping GenAI/LLM features, React/TypeScript frontend, Node.js/Python backend, cloud (GCP/AWS/Azure), strong product judgment and cross-functional leadership.
React, TypeScript, Node.js, Python, Google Cloud Platform, GCP, AWS, Azure
3mo
Save
Mark Applied
Hide
Full Stack Engineer, Senior
Oakland or Seattle or WA or OH or CA or Long Beach or AZ or CO or CT or FL or GA or MD or MN or NV or OR or El Dorado Hills or Lodi or Rancho Cordova or Redding or San Diego or Woodland Hills or AL or IL or VA or WI or TX or NY
$103k-$174k/yr HybridFull Time
5+ YOE5+ years full stack development; BA/BS or equivalent IT experience; React/Vue/Angular; .NET/Java/Node.js/Python APIs; SQL/NoSQL; Azure preferred; Docker; IaC; CI/CD; AI tools; healthcare experience preferred.
React, Vue, Angular, JavaScript, TypeScript, .NET, Java, Node.js, Python, MS SQL Server, Oracle, NoSQL, REST, Azure, AWS, GCP, Docker, Kubernetes, Ansible, Bicep, ARM, Terraform, GitHub, GitLab, Bitbucket, Git
1mo
Save
Mark Applied
Hide
Senior Frontend Engineer
Denver, Colorado, United States
$160k-$185k/yr OnsiteFull Time
5+ YOE5+ years building production web apps; deep React expertise; strong HTML/CSS, accessibility, responsive design; experience with component libraries/design systems; proven use of AI tools; familiarity with backend (Java/Go) and AWS is beneficial.
React, Figma, Claude Design, Java, Go, AWS
1mo
Save
Mark Applied
Hide
Senior Full Stack Java Engineer
Centennial, Colorado, United States
$150k-$170k/yr OnsiteFull Time
7+ YOE7+ years software development with production Java Spring Boot and React; expert TypeScript; microservices, REST API and database design (Postgres/MariaDB); AWS and Terraform architecture; Datadog observability; CI/CD and testing ownership; AI-assisted development experience preferred.
Java Spring Boot, React, TypeScript, Postgres, MariaDB, AWS, Terraform, Datadog, CI/CD
1mo
Save
Mark Applied
Hide
Senior Fullstack Engineer (Freelance)
Paris or Montpellier or London or Denver
€520/day RemoteContract
5+ YOE5+ years shipping full-stack product; fluent in React/TypeScript; strong backend foundations (relational DBs, distributed systems, observability, security); Ruby on Rails a plus; strong testing, ownership, and communication skills.
GraphQL, React, TypeScript, Ruby on Rails, CI/CD
2w
Save
Mark Applied
Hide
Senior Front-End Engineer
Longmont, Colorado, United States
$145k-$165k/yr HybridFull Time
5+ YOE5+ years front-end experience with ownership-level responsibilities; deep React, TypeScript, Node.js, Next.js, CI/CD, performance, accessibility, and analytics experience; AI-fluent and strong mentorship skills.
React, TypeScript, Node.js, Tailwind, AWS Amplify, Vercel, Next.js, Amplitude, Segment, GA4, GitHub, GraphQL, Claude Code, Copilot, Cursor
3w
Save
Mark Applied
Hide
Senior Software Engineer- Full Stack
Centennial, Colorado, United States
$111k-$160k/yr HybridFull Time
7+ YOE7+ years full-stack software engineering experience with Java/Spring Boot, React/TypeScript, deep SQL Server expertise, testing discipline, and legacy-system migration experience.
Java, Spring Boot, pnpm, React, TypeScript, Vite, MUI, TanStack Query, Zod, ColdFusion, Docker, GitLab CI, AWS, S3, DynamoDB, KMS, Kubernetes, JUnit, WireMock, Vitest, Playwright, Selenium, SQL Server, Flyway, OpenAPI, RabbitMQ, Kafka
1w
Save
Mark Applied
Hide
Senior Software Engineer
Denver, Colorado, United States
$185k-$225k/yr OnsiteFull Time
Experience with full-stack development, microservices, cloud, containers, Kubernetes, REST APIs, modern web frameworks, CI/CD tools, and TS/SCI clearance with CI polygraph.
REST, AWS, GCP, Azure, Kubernetes, Docker, Node.js, NPM, Linux, Subversion, Git, JIRA, Confluence, HTML5, CSS, SASS, Less, Stylus, Browserify, WebPack, Closure, Angular, Ember, React, Redux, Reactive, VueJS, SVG, HTML5 Canvas, WebGL, WebSockets, Svelte, Cesium, OpenLayers, Spring
1mo
Save
Mark Applied
Hide
Ground Software Engineer Senior
Laurel or Greenwood Village or Austin
$120k-$190k/yr HybridFull Time
6+ YOEBachelor's in CS or related, 6+ years full-stack experience, deep C# and React/TypeScript expertise, SQL and distributed systems knowledge, experience with Docker/Kafka/InfluxDB/Python, mentoring ability, and active or obtainable security clearance.
TypeScript, React, C#, Docker, Kafka, REST, Python, MSSQL, InfluxDB, Yarn, Babel, Material-UI, Git, TanStack Query, CI/CD
1w
Save
Mark Applied
Hide
Senior Software Engineer
Denver or United States
$140k-$150k/yr RemoteFull Time
5+ YOE5+ years building production software, strong spec authoring and written communication, Rails/full-stack experience, AI-assisted development fluency (Claude Code), ownership and mentorship experience.
Claude Code, Ruby on Rails, Postgres, ElasticSearch, ActiveJob, AWS SQS, Sidekiq, AWS, TypeScript, React, React Native, Chrome
Explore Jobs