Top Full-Stack Engineer Jobs in Denver & Boulder, CO

Reposted 6 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
175K-240K Annually
Senior level
175K-240K Annually
Senior level
Machine Learning • Security • Software • Analytics • Defense
Lead design, build, and deploy full-stack software for DoD/IC missions. Rapidly prototype MVPs, integrate systems and APIs, deliver high-performance frontends, collaborate with users, and deploy/test in secure operational environments.
Top Skills: APIsDevOpsPythonReactTypescript
Reposted 10 Days AgoSaved
Remote
Colorado, CO
136K-200K Annually
Mid level
136K-200K Annually
Mid level
Insurance • Legal Tech • Social Impact
As a Fullstack Engineer, you'll design, build, and operate web applications, collaborating with product teams and mentoring peers while ensuring best practices in coding and system architecture.
Top Skills: AWSCircleCICloud ComputingCSSDockerGCPGoGraphQLHadoopHTMLJavaJavaScriptKubernetesMapreducePythonReactRestRubyScalaSQLWebpack
Reposted 12 Days AgoSaved
Remote
Colorado, CO
120K-150K Annually
Mid level
120K-150K Annually
Mid level
Artificial Intelligence • Fintech • Software
The Full-Stack Engineer will build and maintain applications, own features end-to-end, contribute to system design, and collaborate closely with product and design teams while improving system reliability and performance.
Top Skills: AWSJavaScriptNode.jsNoSQLTypescript
18 Days AgoSaved
Hybrid
Colorado, CO
125K-143K Annually
Mid level
125K-143K Annually
Mid level
Fintech • Real Estate • PropTech
Build and grow Homebot applications, services, and APIs end-to-end. Use AI tooling to rapidly deliver features, create AI-driven workflows, and ship maintainable, well-tested, scalable code. Collaborate with product, design, and engineering, and instrument systems with monitoring, logging, tracing, and analytics.
Top Skills: AIAirflowAmplitudeDbtGraphQLPostgresReactRestRuby On RailsSnowflakeSQLTypescript
Reposted 4 Days AgoSaved
Remote
Colorado, CO
Mid level
Mid level
Artificial Intelligence • Big Data • Internet of Things • Software
Seeking a full stack engineer to develop applications, requiring skills in Node.js, SQL, and modern JavaScript frameworks with a focus on scalability and performance.
Top Skills: JavaScriptNext.JsNode.jsReactSQL
Reposted 13 Hours AgoSaved
Remote
Colorado, CO
180K-230K Annually
Senior level
180K-230K Annually
Senior level
Software • Defense
As a Senior Software Engineer, you'll implement collaboration features, support team architecture, work across tech stacks, and improve developer experience.
Top Skills: AWSCi/CdKubernetesNode.jsPostgresReactRedisTypescript
Reposted 13 Hours AgoSaved
Remote
Colorado, CO
180K-230K Annually
Expert/Leader
180K-230K Annually
Expert/Leader
Software • Defense
The Staff Software Engineer will lead full-stack initiatives, improve system quality, drive technical direction, and mentor peers in a collaborative environment.
Top Skills: AWSCi/CdKubernetesNode.jsPostgresReactRedisTypescript
Reposted 14 Hours AgoSaved
Remote
Colorado, CO
248K-336K Annually
Senior level
248K-336K Annually
Senior level
Artificial Intelligence • Cloud • Consumer Web • Productivity • Software • App development • Data Privacy
The role involves leading application performance improvements across multiple platforms, focusing on measurable metrics and driving engineering standards and workflow optimization, using both hands-on coding and strategic influence.
Top Skills: Ai ToolingGoJavaScriptLlmsPythonReactRum Telemetry
Reposted 14 Hours AgoSaved
Easy Apply
Remote or Hybrid
Colorado, CO
Easy Apply
160K-214K Annually
Senior level
160K-214K Annually
Senior level
Real Estate • Sales • Software • PropTech
As a Senior Software Engineer, you'll design, develop, and maintain full-stack applications, utilizing TypeScript and modern frameworks while collaborating cross-functionally to enhance user experience and performance.
Top Skills: Ai Coding ToolsAngularGitGitlabGraphQLNode.jsRestTypescript
Reposted 23 Days AgoSaved
Easy Apply
Hybrid
Colorado, CO
Easy Apply
136K-204K Annually
Junior
136K-204K Annually
Junior
Sales • Software • Travel
The Full Stack Engineer will develop features for a dynamic web application, collaborate with team members, enhance performance, and improve automated tests.
Top Skills: AngularjsDjangoJavaScriptPythonRelational Databases
2 Days AgoSaved
Easy Apply
Remote or Hybrid
Colorado, CO
Easy Apply
200K-350K Annually
Senior level
200K-350K Annually
Senior level
Fintech • Software • Financial Services
Design and build a high-performance, AI-native web trading experience for sophisticated retail traders. Ship core trading workflows (order entry, positions, blotter, watchlists, alerts), implement trustworthy AI UI patterns, collaborate with backend engineers on low-latency contracts, and iterate quickly with users and stakeholders to deliver end-to-end product features.
Top Skills: PostgresReactReact NativeRustTypescript
2 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
130K-140K Annually
Senior level
130K-140K Annually
Senior level
Artificial Intelligence • Consumer Web • Digital Media • Information Technology • Social Impact • Software
Build end-to-end full-stack AI features on a Ruby on Rails backend and React frontend, design and run experiments (A/B tests and AI evaluations), implement AI infrastructure for reliable LLM inference, and iterate quickly to scale production-ready LLM-powered products.
Top Skills: Ai AgentsLlmsMySQLPostgresReactRetrieval-Augmented Generation (Rag)Ruby On Rails
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Reposted 2 Days AgoSaved
Remote
Colorado, CO
Mid level
Mid level
Healthtech
Develop and implement full stack features for a healthcare platform, focusing on both frontend (React) and backend (Node.js) development. Responsible for performance optimization, API creation, testing, and collaboration with data engineering teams.
Top Skills: AWSCypressExpressJestMongoDBNext.JsNode.jsPostgresReactReact Testing LibraryTypescript
Reposted 6 Days AgoSaved
In-Office or Remote
Colorado, CO
Entry level
Entry level
Social Impact
Join a small team to improve a tech product aimed at upskilling users in MENA, working with JavaScript and Node.js in a collaborative remote environment.
Top Skills: AWSJavaScriptNext.JsNode.jsPostgres
Reposted 4 Days AgoSaved
In-Office
Colorado, CO
180K-260K Annually
Expert/Leader
180K-260K Annually
Expert/Leader
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense • Manufacturing
Lead and deliver software solutions, oversee full-stack architecture, mentor engineers, and drive cross-functional initiatives for spacecraft modeling and control platforms.
Top Skills: BeamCSSElixirGitHTMLJavaScriptReactThree.JsTypescriptWebgl
Reposted 13 Hours AgoSaved
In-Office
Colorado, CO
124K-206K Annually
Senior level
124K-206K Annually
Senior level
Analytics
The Full Stack UI Developer will contribute to DoD Space Force projects, utilizing Java, JavaScript, React, and Python, ensuring compliance with DoD standards, optimizing applications, and managing projects using Gitlab.
Top Skills: C++Ci/CdGitlabJavaJavaScriptPythonReact
Reposted 13 Hours AgoSaved
Remote
Colorado, CO
Mid level
Mid level
Information Technology • Software • Consulting • App development
Design, build, and maintain cross-platform mobile applications and end-to-end web features. Implement front-end interfaces, back-end services and RESTful APIs, optimize databases, write tests and documentation, perform code reviews, and collaborate with UX, QA, and DevOps to deliver high-quality, secure, and performant solutions.
Top Skills: .NetAngularCSSGitHTMLJavaJavaScriptMySQLNode.jsNoSQLPHPPostgresPythonReactRestful ApisSQL ServerTypescriptVue
Reposted 13 Hours AgoSaved
Remote or Hybrid
Colorado, CO
120K-200K Annually
Mid level
120K-200K Annually
Mid level
Fintech • Professional Services • Financial Services
Build and scale a fintech platform across accounting, tax, and banking. Own feature lifecycle from design to deployment, write backend and frontend code, improve infrastructure and reliability, and collaborate with product and design to deliver customer-focused features.
Top Skills: AxumCloud RunCloud SqlDjangoGCPNext.JsPostgresPub/SubPythonReactRustSlonikSqlxTerraformTypescript
Reposted 13 Hours AgoSaved
In-Office or Remote
Colorado, CO
Mid level
Mid level
Artificial Intelligence • Analytics • Consulting • Semiconductor
Build and scale a full-stack Next.js application tracking PRs, CI health, test parity, and benchmarks across AI accelerator open-source projects. Integrate GitHub APIs and webhooks, design PR/metrics schemas, visualize results, and produce technical digests and reports on cross-accelerator parity and performance trends.
Top Skills: Chart.JsCudaD3.JsGithub ActionsGithub ApiHipJaxNeonNeuronNext.Js App RouterPostgresPyTorchReactRechartsRocmServer ActionsServer ComponentsSQLTpuTrainiumTypescriptVercelWebhooksXla
Reposted 13 Hours AgoSaved
Remote
Colorado, CO
Internship
Internship
Information Technology • Marketing Tech • Software • App development
Work on real-world web applications across frontend and backend. Use modern frontend frameworks (React/Angular/Vue) and backend tech (Node.js, Python, Java, PHP). Integrate RESTful APIs with databases (MongoDB, PostgreSQL, MySQL), debug, test, optimize performance, and collaborate with designers and product teams while gaining hands-on mentorship.
Top Skills: AngularCSSGitHTMLJavaJavaScriptMongoDBMySQLNode.jsPHPPostgresPythonReactRestful ApisVue
Reposted YesterdaySaved
Remote
Colorado, CO
150K-150K Annually
Mid level
150K-150K Annually
Mid level
HR Tech • Other • Professional Services
Backend-focused fullstack developer responsible for designing, building, and maintaining PHP-based applications, optimizing MySQL schemas and high-availability deployments, troubleshooting production issues, and contributing JavaScript frontend work. Collaborate on architecture, code reviews, and deliver secure, maintainable systems in a remote team.
Top Skills: Database ClusteringHigh-AvailabilityJavaScriptLegacy PhpMySQLPHPReplication
YesterdaySaved
In-Office or Remote
Colorado, CO
175K-175K Annually
Senior level
175K-175K Annually
Senior level
Travel
Design, build, and scale end-to-end full stack features and microservices. Lead architecture and system design, implement cloud deployments and CI/CD, ensure performance, security, and reliability, and mentor junior engineers.
Top Skills: AWSAzureCachingCi/CdCSSDynamoDBEvent-Driven ArchitectureGCPGraphQLHTMLInfrastructure-As-CodeJavaJavaScriptKafkaMySQLNode.jsObservability ToolsPostgresReactRestful ApisSpring BootSqsTypescript
Reposted YesterdaySaved
Remote
Colorado, CO
146K-235K Annually
Mid level
146K-235K Annually
Mid level
Information Technology • Software
As a Full Stack Engineer, you will design, develop, and maintain scalable solutions for data-driven products, collaborating with cross-functional teams.
Top Skills: AWSAzureGCPGoNode.jsReactTypescript
130K-160K Annually
Mid level
Artificial Intelligence • News + Entertainment • Conversational AI • Generative AI
Build the core product interface (chat, citations, admin settings) from scratch, ship weekly to design partners, own UX decisions, establish frontend architecture and conventions, and work directly with founders to prioritize and implement features.
Top Skills: AWSNode.jsPostgresReactTypescript
2 Days AgoSaved
Remote
Colorado, CO
Mid level
Mid level
HR Tech • Software
Build, customize, and maintain WordPress and Shopify websites; manage CRM setup and integrations (HubSpot, HighLevel); handle full-cycle website and CRM builds; optimize performance, SEO readiness, and conversions; troubleshoot issues; collaborate with stakeholders and communicate progress, blockers, and timelines.
Top Skills: CRMHighlevelHubspotShopifyWordpress
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