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

Build, test, and maintain scalable web applications using Node.js and TypeScript. Design and optimize PostgreSQL databases and SQL queries. Integrate third-party APIs (REST, GraphQL, webhooks). Implement frontend components with React or similar, use Git for version control, troubleshoot issues, and collaborate with cross-functional teams. Support CI/CD and containerization (Docker) and deploy to cloud platforms (AWS, Fly.io).

Design, build, and maintain Shopify POS applications and custom UI extensions. Integrate POS frontends with server-side logic and third-party services, test on POS hardware, troubleshoot live retail issues, and maintain observability, security, and CI/CD practices while collaborating with product and client teams.

The Full Stack Engineer will design, implement, and deliver full-stack features, focusing on scalable APIs and cloud-native solutions while collaborating with clients and engineering teams.

As a Full Stack Engineer, you will build AI-powered applications, manage client interactions, and apply best practices in MLOps and LLMOps.

The Full-Stack Developer will design, develop, and maintain applications, focusing on backend APIs and user interfaces, while optimizing for performance and reliability.

The Full Stack Developer will design and maintain application components, support integrations, and provide Tier 2/3 operational support in a DoD environment, using Java, JavaScript, SQL, and cloud technologies.

Design, build, and maintain full‑stack services and tooling that power Stripe's global support operations. Expand live channel integrations (voice/messaging) including Greater China platforms, debug production issues, collaborate cross‑functionally, and improve engineering standards and processes.

Lead design and implementation of the PSA Liquidity Platform connecting buyers and sellers. Build buyer tooling, matching/ranking engines, and seller experiences. Architect and operate microservices and Kafka-driven systems on Kubernetes/AWS, instrument observability, apply AI tooling across the SDLC, and drive cross-functional delivery from 0-to-1 while owning end-to-end outcomes.

Build and maintain scalable data pipelines, Snowflake schemas, and ETL/ELT processes; develop and expose data via RESTful APIs; deliver Node.js backend services on AWS; build Vue/Vuetify front-ends; ensure data quality, reliability, and integration with financial systems.

Design, build, and maintain full-stack applications to modernize DHS ICE legacy systems. Analyze legacy workflows, translate mission-critical behavior into scalable designs, implement backend services and APIs, develop front-end components, support SDLC activities, troubleshoot across stacks, and collaborate with stakeholders while upholding engineering best practices.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Seeking a Full Stack Engineer to develop and scale the platform using React and Python. Responsibilities include building frontend applications, developing APIs, managing workflows, and optimizing databases.

Develop and maintain web applications using Angular and NestJS/PHP. Manage MySQL databases and contribute to API design. Engage in client interactions and project planning while ensuring code quality and adhering to best practices.

The Senior Software Engineer will design, develop, and optimize scalable PHP APIs and web applications, collaborating with product and design teams to support product development and implement best coding practices.

Design, build, and ship full-stack features for Guardian's monitoring platform, ensuring production reliability and code quality.

As a Fullstack Software Engineer, you'll design, develop, and maintain scalable frontend and backend systems while collaborating across teams.

Seeking a Senior Full Stack Developer focused on backend architecture to design, maintain, and mentor within an Agile environment, utilizing Java and .NET.

The role involves developing and sustaining a mission-critical command and control system using React.js and TypeScript, optimizing frontend performance, and mentoring junior engineers in an Agile environment.

Build end-to-end features across backend (Go) and frontend (React/TypeScript), design and implement APIs, map complex data to clear UIs, optimize performance, implement robust error handling, monitor feature usage, and iterate with customers and design partners.

Build end-to-end AI integrations in a cybersecurity platform: gather contextual security data, call and optimize AI services, map responses to actionable UI (React), implement error/fallback handling, monitoring, caching, and user feedback loops while working directly with customers.

The Staff/Principal Full Stack Engineer will design and build core web applications, backend services, and integrate AI capabilities for healthcare-focused operational tools.

The Full-stack Engineer will build and own features for Hercules' AI-driven applications, including the AI Agent and App Builder, focusing on clean code, SaaS functionalities, and system design within a team-centric environment.

Design, build and maintain Microsoft Cloud applications using Power Apps/Pages and Azure services. Implement Entra ID authentication, Azure Functions/App Services, Logic Apps and Blob storage. Create Azure Data Factory pipelines and APIs (REST/GraphQL), integrate external services and LLM data pipelines, and ensure performance, security, and scalability while collaborating with customers to turn requirements into streamlined apps.

Design, build, and operate scalable full-stack systems for an AI-native enterprise platform: backend services, APIs, frontend React apps, workflow orchestration, integrations, testing, CI/CD, monitoring, and production readiness while collaborating with product and customers.

Design, develop, and maintain high-performance web applications and WebAPIs using .NET 6 and React. Build scalable, reliable services, optimize performance, troubleshoot defects, and collaborate with product and development teams. Use Azure platform services, NoSQL/SQL databases, CI/CD pipelines, and propose continuous improvements.