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45 senior web developer jobs at 35 companies in Boulder, CO

1mo
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Sitecore Web Developer
Tacoma or Aurora or San Antonio or Falls Church
OnsiteFull Time
BDR Solutions
BDR Solutions: Provider of IT, engineering, and consulting for federal agencies.
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
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2mo
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Senior Application Developer
Aurora, Colorado, United States
$85k-$95k/yr HybridFull Time
University of Colorado
University of Colorado: Public research university providing higher education and healthcare services.
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#
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1d
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Senior Software Engineer II, Web Platform
Broomfield, Colorado, United States
$180k-$210k/yr HybridFull Time
Biofire
Biofire: Manufacturing biometrically-secured smart guns for home defense.
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
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4d
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Senior Software Engineer
Denver, Colorado, United States
$185k-$225k/yr OnsiteFull Time
Amatriot Group
Amatriot Group: Provides IT consulting and mission-critical technology support services.
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
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3w
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Senior Software Engineer
Denver, Colorado, United States
$160k-$185k/yr HybridFull Time
Litera
Litera: AI-powered document and workflow software for legal professionals.
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
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2w
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Senior Software Engineer
Denver or United States
RemoteFull Time
DomainTools
DomainTools: Provides DNS-based threat intelligence and domain investigation solutions.
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
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2d
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Senior Engineer
Denver, Colorado, United States
$105k-$110k/yr OnsiteFull Time
Tata Consultancy Services
Tata Consultancy ServicesNational Stock Exchange of India: TCS: Global provider of IT services, consulting, and business solutions.
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
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1w
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Senior Full-Stack Lead Developer
Broomfield, Colorado, United States
$89k-$125k/yr HybridFull Time
Vail Resorts
Vail ResortsNYSE: MTN: Operates mountain resorts and provides hospitality and leisure services.
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
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1mo
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Senior Backend Software Engineer
Denver, Colorado, United States
$150k-$190k/yr HybridFull Time
Volley Automation
Volley Automation: Automated robotic parking systems for space-constrained locations.
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
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3w
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Senior Frontend Engineer
Denver, Colorado, United States
$160k-$185k/yr OnsiteFull Time
AgentSync
AgentSync: Modern insurance compliance and producer management software.
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
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3d
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Senior Backend Engineer
Denver, Colorado, United States
$160k-$180k/yr OnsiteFull Time
Scotch
Scotch: Point of sale and management platform for liquor stores.
4+ YOE4+ years backend web development experience; strong Ruby and Rails knowledge; PostgreSQL schema and query optimization; RESTful API design; Git; secure coding and strong problem-solving.
Rails, Hotwire, PostgreSQL, Ruby, JSON, Git, GoodJob, Sidekiq, AWS, Heroku
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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
Compa
Compa: AI-powered compensation intelligence platform for enterprise teams.
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
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4d
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Staff Software Engineer
Denver, Colorado, United States
$175k-$180k/yr RemoteFull Time
LINQ
LINQ: Provides cloud software for K-12 school administration and nutrition.
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
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3d
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Sr. Optimizely Developer
Boston or Denver
HybridFull Time
Bentley Systems
Bentley SystemsNASDAQ: BSY: Software for designing, building, and operating global infrastructure.
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
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1w
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Software Developer - InfoTrack Exchange, ServeManager
Denver, Colorado, United States
$75k-$135k/yr HybridFull Time
InfoTrack
InfoTrack: Software platform connecting law firms to courts and litigation services.
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
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1mo
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Software Engineer (Full Stack)
Denver, Colorado, United States
$125k-$165k/yr HybridFull Time
Bayview Asset Management
Bayview Asset Management: Investment management firm specializing in credit and mortgage assets.
6+ YOEBA/BS in CS or engineering required; 6+ years software development experience with C#, JavaScript, SQL/T-SQL, REST/.NET Core; experience with web development, React preferred, relational DB and SDLC (Agile/Scrum).
C#, JavaScript, SQL, TSQL, SQL Server, React, .NET Core, .NET, ADO, HTML, XML, ASP, AJAX, REST, Web services, Git, Jira, TeamCity, Octopus
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2mo
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Staff software engineer, full-stack
Denver, Colorado, United States
$215k-$254k/yr OnsiteFull Time
Watershed
Watershed: Software platform for corporate carbon accounting and climate reporting.
8+ YOE8+ years of software engineering experience; Node.js web development or data pipelines; experience building scalable software from user needs; willingness to work in an office four days a week.
Node.js, APIs, Data pipelines, JavaScript
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2mo
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Senior Product Architect
San Francisco or Denver
$185k-$251k/yr OnsiteFull Time
Contentful
Contentful: SaaS platform for headless content management and delivery.
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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1mo
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Engineer Senior - Digital Test Developer
Westminster, Colorado, United States
$97k-$165k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
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
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1mo
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Principal Software Engineer, Type Script, JavaScript - Video Engineering
Englewood, Colorado, United States
$160k-$240k/yr OnsiteFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
10+ YOE10+ years software development experience; Bachelor's degree; strong JavaScript/TypeScript and web browser knowledge; experience with MSE/EME, API design, HTTP video, and computer science fundamentals.
TypeScript, JavaScript, HTML5, Media Source Extensions (MSE), Encrypted Media Extensions (EME)
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