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Top Full-Stack Engineer Jobs in Denver & Boulder, CO
Machine Learning • Security • Software • Analytics • Defense
Lead software engineering teams developing, integrating, deploying, and maintaining full-stack mission applications for DoD and intelligence customers. Build prototypes and high-performance user interfaces, integrate APIs and independent capabilities, collaborate with military and government operators, and conduct deployment, field testing, and troubleshooting in secure operational environments. Manage customer relationships while ensuring software quality, reliability, and performance.
Top Skills:
PythonReactTypescript
Fintech • Information Technology • Insurance • Financial Services • Big Data Analytics
Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.
Top Skills:
.NetAgileC#Ci/CdGitJavaScriptJestNode.jsNunitReactSdlcSQL ServerTypescriptWeb Apis
Cloud • Fintech • Food • Information Technology • Software • Hospitality
Build and ship customer-facing products across backend services, APIs, data models, React web interfaces, and Android point-of-sale applications. Learn unfamiliar platforms quickly, collaborate with product and design, deliver resilient code, and own testing, instrumentation, on-call support, and cleanup. The role emphasizes 0-to-1 product development, customer-focused decision-making, rapid experimentation, and using AI tools to improve development velocity and quality.
Top Skills:
Ai ToolsAndroidAPIsAsynchronous CommunicationDistributed SystemsEvent-Driven ArchitectureJavaKotlinReact
Edtech • Fintech • Payments • Social Impact • Financial Services • Big Data Analytics
Build and maintain scalable e-commerce and marketplace features across Node.js, React, MySQL, and MongoDB. Own complex features end to end, design backend services and APIs, integrate PunchOut procurement systems, improve platform security and reliability, conduct code reviews, and mentor engineers. The role requires strong full-stack JavaScript and TypeScript expertise, e-commerce domain experience, and the ability to work autonomously on high-volume transactional software.
Top Skills:
CoupaCxml PunchoutGraphQLJaggaerJavaScriptMongoDBMySQLNest.JsNext.JsNistNode.jsOciOracle ProcurementPci-DssReactRestSap AribaSoc 2Typescript
Computer Vision • Fintech • Hardware • Internet of Things • Machine Learning • Software • Transportation
Build and maintain the full-stack platform connecting Blissway hardware to drivers, partners, and agencies. Own public user surfaces, partner integrations (DMVs, mailhouses, fleet vendors, ACH), platform/deployment tooling, service infrastructure, and internal access management. Ensure secure, robust, production-ready systems and tooling that support a fast-moving, small engineering team.
Top Skills:
Ach Payment ProcessingAuthentication/Identity ManagementDevOpsIotPythonSaaSTypescript
21 Days AgoSaved
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Easy Apply
Big Data • Fintech • Mobile • Payments • Financial Services
Leads technical vision and strategy for Affirm’s Marketplace, Search, Ads Platform, and consumer experiences. Designs scalable full-stack platforms, guides architecture and technical excellence, coordinates initiatives across engineering teams, mentors engineers, and drives reliable delivery of customer-focused products across iOS, Android, and Web.
Top Skills:
AndroidiOSJavaScriptKotlinReact Native
Aerospace • Artificial Intelligence • Computer Vision • Software • Analytics • Defense • Big Data Analytics
Design, develop, test, deploy, and support scalable full-stack cloud-native applications using Java, Spring Boot, Vue.js, Python, and FastAPI. Build secure APIs and operate AWS applications with Docker, Kubernetes, and Infrastructure as Code. Collaborate with product, systems, and architecture teams to deliver features end to end. Apply AI-assisted development throughout coding, testing, debugging, code review, and documentation while validating quality, security, and maintainability.
Top Skills:
AngularAWSAws CdkCi/CdCloudFormationDevOpsDockerFastapiGCPInfrastructure As CodeJavaKubernetesPostgresPythonReactRest ApisSpring BootTerraformVue
23 Days AgoSaved
Easy Apply
Easy Apply
Cloud • Security • Software • Cybersecurity • Automation
Leads technical direction and develops fullstack purchase experiences using Ruby on Rails and Vue.js. Designs resilient transactional flows, integrates billing and CRM systems, improves reliability and rollout safety, mentors engineers, reviews code, reduces technical debt, and participates in incident response. Partners with Product, Design, Billing, and Support to improve GitLab’s purchase, subscription, discount, and upgrade workflows.
Top Skills:
Ruby On RailsVue
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense • Manufacturing
Own end-to-end full-stack feature development across React/TypeScript interfaces and Elixir backend services for spacecraft modeling, simulation, and ground-control software. Drive architecture, technical debt reduction, performance, reliability, testing, API design, and production deployment. Mentor engineers, establish coding standards, collaborate with product, design, QA, operators, and astrodynamics teams, and deliver complex data-dense, real-time applications.
Top Skills:
BeamCSSElixirExunitFigmaGitGrafanaGrpcHTMLJavaScriptOpentelemetryOtpPostgresPrometheusReactReact Testing LibraryReact Three FiberRestThree.JsTypescriptVitestWebsocket
Reposted 21 Minutes AgoSaved
Information Technology • Professional Services • Consulting
Design, build, and deploy secure, high-performance, scalable cloud-native applications supporting Ariba P2P. Work full-stack in Java using Spring Boot and the SAP BTP Cloud Foundry CAP (Java) model, applying resiliency, security, and performance best practices.
Top Skills:
Ariba P2PCap (Java)Cloud FoundryJavaSap BtpSpringSpring Boot
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense • Manufacturing
Contribute to full-stack features for spacecraft mission control and distributed ground control systems. Build React/TypeScript frontends and Elixir backend services, write maintainable and testable code, collaborate with operators, designers, and engineering specialists, and participate in design and code reviews. The role involves smaller, well-defined tasks under senior guidance during a three-month temporary engagement with potential conversion.
Top Skills:
CSSCss-In-JsElixirErlangExunitFigmaGitGraphQLGrpcHTMLJavaScriptJestPostgresReactReact Testing LibraryReact Three FiberRestStorybookThree.JsTypescriptVitestWebsocket
Information Technology • Professional Services • Consulting
Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.
Top Skills:
.Net 6+AngularAzure App ServicesAzure DevopsAzure FunctionsAzure Key VaultAzure Service BusAzure SqlBlazorC#Ci/CdCosmos DbDockerGraphQLGrpcJSONKubernetesOauthReactRest ApisSQL Server
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Artificial Intelligence • Edtech • Information Technology • Software
Build and own user-facing features and core platform architecture across frontend, backend, and ML pipelines. Integrate AI workflows (LLMs, embeddings) for curriculum generation and automated evaluation. Manage end-to-end development: requirements, design, implementation, CI/CD, testing, observability, and iteration while collaborating with product, design, ML, and customer teams.
Top Skills:
Ai/MlBuild & Test PipelinesCi/CdEmbeddingsGoJavaJavaScriptLlmsMl PipelinesObservabilityPythonTypescriptVersion Control
Agency • Information Technology
Develop and deploy scalable Java microservices and serverless applications using Spring Boot, AWS EKS, and AWS Lambda. Build RESTful APIs, integrate Vue.js front ends, write automated unit tests with JUnit and Mockito, manage CI/CD pipelines, and maintain Git workflows. Preferred experience includes SQL and NoSQL databases, Docker, and monitoring tools for Kubernetes environments.
Top Skills:
AWSAws EksAws LambdaDockerDynamoDBGitGithub ActionsGitlab CiJavaJavaScriptJenkinsJunitKubernetesMockitoNoSQLPostgresRest ApisSpring BootSQLVue
Aerospace • Information Technology • Security • Cybersecurity • Defense
Leads architecture, design, development, deployment, and technical direction for cloud-based SIGINT microservices. Collaborates with customers, analysts, systems engineers, and software teams using Agile methods. Develops Java/Spring back-end services and modern front-end applications, works with databases and containerized cloud systems, and manages CI/CD pipelines. The role requires active TS/SCI clearance with CI polygraph, technical roadmap ownership, and participation in quarterly customer reviews involving approximately 10% travel.
Top Skills:
AlertmanagerAngularAWSAzureConfluenceCSSCucumberDockerGitlabGitlab PipelinesGCPGrafanaHelmHTMLJavaJava 17JavaScriptJIRAJunit 5KeycloakKubernetesLokiMockitoMongoDBMySQLNexusiqOidcPkiPostgresPrometheusRabbitMQReactRkeRke2SastSeleniumSonarqubeSpring BootSpring FrameworkTypescriptVue
Fintech • Payments • Financial Services
Build and evolve scalable full-stack products using React, TypeScript, Next.js, Python, and Django. Own frontend and backend architecture, APIs, testing, CI/CD, observability, performance, and reliability. Collaborate with Product and Design, lead technical initiatives, identify risks, define solutions in ambiguous environments, and mentor engineers. Develop 0-to-1 experiences and production systems across cloud-based environments while establishing engineering standards and monitoring technical and product metrics.
Top Skills:
AWSAzureCachingCi/CdClient-Side RenderingCSSCursorDatabasesDjangoGCPGithub CopilotHTMLJavaScriptLlmsNext.JsPythonQueuingReactRest ApisSsrTypescript
Software
Build and maintain full-stack features for Vanta’s third-party risk management products, including vendor onboarding, lifecycle management, monitoring workflows, data models, and platform abstractions. Write tested code, participate in reviews and architecture decisions, and collaborate with product, design, and engineering teams to deliver customer-facing functionality. Experience with TypeScript, React or Node.js, web applications, databases, and REST or GraphQL APIs is expected.
Top Skills:
AnthropicGraphQLNode.jsOpenaiReactRestTypescript
Fintech • Software • Financial Services
Lead development of secure, scalable digital banking software across front-end and backend systems. Design Angular or React applications, build APIs, optimize SQL performance, integrate third-party platforms, improve code quality, implement testing strategies, and mentor engineers. Collaborate with cross-functional teams in an Agile environment while supporting cloud-native practices, regulatory compliance, and continuous product improvement.
Top Skills:
.Net CoreAngularAPIsAWSAzureC#CSSGCPHTMLReactSQLTypescript
Cloud • Healthtech • Information Technology • Software • Consulting
Develop and maintain full-stack features for CMS’s Unified Case Management system. Responsibilities include building Java and Spring Boot backend services, APIs, data models, Angular or React interfaces, database interactions, and automated tests using test-driven development. The engineer will optimize performance, scalability, security, and data integrity; collaborate on system design and integration; reduce technical debt; and support teammates in a remote-first environment.
Top Skills:
Ai/MlAngularAWSCamundaFhirJavaJavaScriptMavenPostgresReactSpring BootTypescript
Information Technology • Consulting
Designs, builds, and scales full-stack web applications using React, TypeScript, Python, and AWS. Develops APIs and backend services, optimizes relational and document databases, implements automated testing, and manages Docker-based deployments and CI/CD pipelines. Collaborates with technical and non-technical stakeholders, translates business requirements into production-ready solutions, communicates clearly, and mentors colleagues while promoting strong engineering practices.
Top Skills:
Api GatewayAstroAWSAws LambdaCi/CdDjango Rest FrameworkDockerDynamoDBEcsFargateFastapiFlaskGitNext.JsPostgresPythonReactTurbopackTypescriptViteWebpack
Marketing Tech • Professional Services • SEO • Automation
Build and maintain a client portal and AI-native fulfillment systems using TypeScript, Next.js, React, and PostgreSQL. Own integrations with Google Ads, Twilio, Zapier, and public APIs, including retries and failure handling. Manage deployments, migrations, monitoring, security basics, debugging, and incident documentation. Work independently in a remote asynchronous environment while documenting changes and shipping reliable end-to-end features.
Top Skills:
Ai Coding AgentsClaude CodeClerkDrizzle OrmGitGoogle Ads ApiNext.JsPostgresReactSlackSupabaseTailwindTwilioTypescriptVercelZapier
Hardware • Internet of Things • Energy • Industrial
Design, build, and optimize scalable cloud and web software with focus on infrastructure, performance, and hardware integration for IoT devices. Collaborate with hardware teams to ensure connectivity and high availability, implement new features, and improve system efficiency.
Top Skills:
AWSIotJavaJavaScriptPythonReact
Software • Defense
Own technical strategy and architectural decisions across multiple engineering squads. Design scalable distributed systems, APIs, data models, and cloud-native platforms while building shared systems that improve delivery. Partner with product and engineering leadership, resolve ambiguous technical challenges, establish AI-assisted development practices, and mentor engineers through design reviews and cross-team collaboration. The role requires full-stack expertise and strong influence, communication, and technical leadership in a high-stakes B2B SaaS environment.
Top Skills:
AbacAWSCi/CdCsvExcelJwtKeycloakKmlKubernetesNode.jsOauth 2.0Openid ConnectPdfPostgresReactRedisRestSaml 2.0Secure Api GatewaysTerraformTypescriptVite
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
Healthtech
Build and ship full-stack features, including REST APIs, single-page applications, data models, cloud-based containerized services, and relational database solutions. Translate product requests into deliverable work, contribute to architectural decisions, review pull requests, and protect patient data by maintaining strict PHI-handling practices. Work in a trunk-based development environment with short-lived branches, frequent releases, and continuous collaboration.
Top Skills:
Ai-Assisted Coding ToolsCloud PlatformsContainersPostgresPythonReactRelational DatabasesRest ApisSingle-Page ApplicationsStateless ServicesTrunk-Based DevelopmentVersion Control
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