54 senior web developer jobs at 40 companies in Thornton, CO
1d
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Sr Web Developer
Boulder, Colorado, United States
$163k-$245k/yr HybridFull Time
7+ YOEBachelor's in Computer Science or equivalent,7+ years full-stack web development,expert CSS/JavaScript,TypeScript,React,Next.js,Webpack,Storybook,Git,CI/CD,experience with CMS and web performance/accessibility.
Next.js, Webpack, JavaScript, TypeScript, Storybook.js, React, Git, Sanity.io, CI/CD
2mo
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Sitecore Web Developer
Tacoma or Aurora or San Antonio or Falls Church
OnsiteFull Time
8+ YOESenior full‑stack web developer with 8+ years experience, Sitecore and ASP.NET/C# expertise, HTML/CSS/JavaScript and modern front-end frameworks, SQL, MVC5/PWAs, IAT II and CE certifications (DoD 8570/8140), U.S. citizenship required.
HTML, CSS, JavaScript, React, Angular, Vue, Active Server Pages (ASP.NET), C#, Sitecore Content Management System (CMS), SQL, MVC5, PWAs, Jira
3mo
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Senior Application Developer
Aurora, Colorado, United States
$85k-$95k/yr HybridFull Time
2+ YOESenior developer for identity and access management; design, develop, and support secure, multi‑system web apps with identity/authentication integrations.
ASP.NET, NodeJS, MVC, TypeScript, Angular, Vue, React, MySQL, Oracle, MSSQL Server, Java, Python, Ruby, C#
5d
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Senior Software Engineer II, Web Platform
Broomfield, Colorado, United States
$180k-$210k/yr HybridFull Time
End-to-end ownership of production web platforms; full-stack fluency with Next.js, TypeScript, React, Prisma, GraphQL; system design, reliability, and cross-functional partnership skills.
Next.js, TypeScript, React, Prisma, GraphQL
1w
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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
4w
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Senior Software Engineer
Denver, Colorado, United States
$160k-$185k/yr HybridFull Time
5+ YOE5+ years backend software development with .NET/.NET Core and Web/REST APIs; frontend experience with React/Vue/Angular/Svelte and Typescript; SQL experience; unit testing; AI/LLM development experience; strong communication and problem-solving.
Cognition AI, Devin, Cline, Replit, Cursor, Azure OpenAI, Anthropic, GitHub, Azure DevOps, Bit, Microsoft Visual Studio Code, Microsoft Visual Studio, SQL Azure, SQL Server, Unknit, MSTest, PostgreSQL, Docker, Azure, AWS, GCP, GitHub Copilot, Windsurf, Codex
3w
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Senior Software Engineer
Denver or United States
RemoteFull Time
5+ YOE5+ years professional development (Python, GoLang, Rust), 3+ years cloud (AWS,Docker,Kubernetes), web-scale data engineering, Kafka, Linux/Unix; strong communication and cross-team coordination.
Python, GoLang, Rust, AWS, Docker, Kubernetes, OpenSearch, Postgres, CockroachDB, Spark, Kafka, Linux/Unix, ElasticSearch, NATS, Apache Airflow, Bash, Scala, C, Hive, CICD
6d
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Senior Engineer
Denver, Colorado, United States
$105k-$110k/yr OnsiteFull Time
6+ YOESPARQL,RDF,OWL and semantic web experience; graph databases (Stardog or Neo4j); SQL, Python, JavaScript; telecom OSS/BSS and event-driven architectures; Bachelor degree required.
SPARQL, RDF, OWL, Stardog, Neo4j, SQL, Python, JavaScript, EXFO Ontology (PRONTO), Kafka, REST APIs
2w
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Senior Full-Stack Lead Developer
Broomfield, Colorado, United States
$89k-$125k/yr HybridFull Time
5+ YOE5+ years C# application development, Web API and Agile experience; SQL Server, HTML/CSS/JavaScript; experience leading developers, BS/MS in CS or related field; strong communication and leadership.
C#, .NET, Web API, Angular, WPF, Microsoft SQL Server, HTML, CSS, JavaScript, Git
1mo
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Senior Backend Software Engineer
Denver, Colorado, United States
$150k-$190k/yr HybridFull Time
BS in CS or related required (MS preferred). Strong backend development experience with Python/JavaScript, web services, cloud platforms (AWS/GCP/Azure), databases, Git and CI/CD. Must be able to work on-site or in the field at least 3 days/week.
AGVs, ROS2, ROS, Linux, IoT, PLCs, AWS, GCP, Azure, Python, JavaScript, Django, Flask, Next.js, Express.js, Git, CI/CD, MQTT, ECR, S3, EC2, React, TypeScript, iOS, Android
1mo
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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
1d
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Senior Customer Solutions Engineer
Sunnyvale or Boulder or San Francisco
$152k-$221k/yr OnsiteFull Time
6+ YOEBachelor's in engineering/CS or equivalent,6+ years with client-side web tech and programming,experience troubleshooting partners,EMR not applicable; SQL/NoSQL and systems experience preferred.
HTML, CSS, JavaScript, HTTP, Java, C, C++, Python, SQL, NoSQL, Linux, Unix
1mo
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Senior Software Engineer (all teams)
Newport Beach or Irvine or San Francisco or Denver or Seattle
$165k-$220k/yr HybridFull Time
5+ YOE5+ years shipping production software; proficiency in a modern web language/framework and full‑stack fluency; proven ownership of complex systems; leadership in technical decisions. AI/ML and data-product experience preferred.
Django, Python, React, TypeScript, GraphQL, AWS, vLLM, Linear, Slack, Notion, Metabase
1d
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Senior Digital Engineer
Wheat Ridge, Colorado, United States
$105k-$131k/yr OnsiteFull Time
5+ YOEBachelor's or equivalent,5+ years software engineering,3+ years web application experience,AWS,Terraform,CI/CD,AI-assisted development,Git; strong architecture, security, and healthcare/regulatory experience preferred.
Claude Code, GitHub Copilot, ChatGPT, Cursor, AWS, Terraform, Docker, Kubernetes, CloudFront, Route 53, Lambda, ECS, EKS, S3, RDS, GitHub Actions, Azure DevOps, Jenkins, React, TypeScript, JavaScript, HTML5, CSS3, Tailwind CSS, Python, .NET Core, REST APIs, GraphQL, Git
1w
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Staff Software Engineer
Denver, Colorado, United States
$175k-$180k/yr RemoteFull Time
10+ YOE10+ years software development experience, expertise in .NET and web technologies, cloud-native development, microservices, CI/CD, strong leadership and mentoring skills, Bachelor’s degree or equivalent.
Node, .NET (C#), PostgreSQL, DynamoDB, Angular, Microsoft Azure DevOps, AWS, Microsoft Azure DevOps Pipelines, Git
6d
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Sr. Optimizely Developer
Boston or Denver
HybridFull Time
5+ YOE5+ years full-stack web development with 3+ years in Optimizely; deep C#/.NET Core/MVC backend and advanced HTML5/CSS3/JS frontend skills; experience with experimentation, personalization, and CI/CD.
Optimizely CMS, Optimizely Web Experimentation, Optimizely Feature Experimentation, C#, .NET Core, MVC, HTML5, CSS3, SASS, JavaScript, ES6+, jQuery, React, Vue, Project JS, Figma, Git, Azure DevOps, GitHub Actions, GitHub Copilot, ChatGPT, Salesforce, Marketo, Adobe Commerce
1mo
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Software Engineer
Denver or Springfield or Sterling or St. Louis
$82k-$172k/yr OnsiteFull Time
5+ YOEBachelor's in CS or related, 5+ years software development experience, Java and/or Python proficiency, experience with web frameworks and databases, TS/SCI clearance with polygraph required, Agile and secure coding experience.
Java, Python, ArcGIS, GeoServer, OpenLayers, Leaflet, Cesium, Docker, Kubernetes, CI/CD
2w
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Software Developer - InfoTrack Exchange, ServeManager
Denver, Colorado, United States
$75k-$135k/yr HybridFull Time
5+ YOE5+ years Ruby on Rails and full-stack web development, 5+ years JavaScript and PostgreSQL experience, experience with AI coding assistants and agentic workflows, strong QA/testing and communication skills.
Ruby on Rails, JavaScript, Stimulus, Turbo, PostgreSQL, Claude Code, Cursor, Copilot, Stripe, Maxio, RESTful API
1mo
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Engineer Senior - Digital Test Developer
Westminster, Colorado, United States
$97k-$165k/yr OnsiteFull Time
4+ YOEBachelors in engineering (or related) + 4+ years experience; experience in full-stack web/desktop apps, back-end and front-end development, CI/CD and testing; Python and Ruby proficiency; eligible for Top Secret/SCI; U.S. person required.
Python, Ruby, Ruby on Rails, Knockout, Vue, NodeJS, JavaScript, Keycloak, Redis, Traefix, Minio, OpenC3 COSMOS, LabVIEW, Veristand, Linux, Windows, BASH, PowerShell, Docker, Podman, CI/CD, NoSQL, FPGA, VHDL, UART, GPIB, DAQmx, RIO, TCP-IP, USB, Spacewire, 1553
2mo
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Senior Product Architect
San Francisco or Denver
$185k-$251k/yr OnsiteFull Time
7+ YOE7-10 years building and operating production web apps; strong TypeScript, React/Next.js, Node.js; API design; architecture and leadership; internal tools focus.
TypeScript, React, Next.js, Node.js, API design, serverless, containers, observability, design system
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