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

The Senior Fullstack Engineer will lead projects, mentor engineers, and build user-facing SaaS products using React, TypeScript, Node.js, GraphQL, and MongoDB, focusing on team collaboration and effective trade-off decision-making.

The Senior Full-Stack Engineer will develop new features and improve existing functionality, collaborate with the product team, and resolve bugs while influencing architectural decisions.

As a Senior Full Stack Engineer, you will design and implement features, maintain systems, and ensure performance in a fintech environment, collaborating with cross-functional teams.

As a Senior Fullstack Engineer, you'll develop a no-code platform, build UIs and backend services, and improve conversation analysis workflows using AI technologies.

As a Senior Full Stack Engineer, you will design and develop trading platforms, create high-performance UIs, and mentor client engineering teams.

As a Senior Full Stack Engineer, you'll architect and build accessible web applications, lead end-to-end solutions, and enhance team efficiency through innovative practices at a remote digital agency.

Design, develop, and deliver fullstack web solutions, optimize platforms, mentor engineers, and manage product features from ideation to launch.

The Senior Fullstack Engineer will build fullstack features for Real User Monitoring, working with backend services, APIs, and frontend visuals. Responsibilities include designing data ingestion systems, optimizing queries, and collaborating with SDK engineers to enhance user experience. Candidates should have strong backend and frontend expertise, particularly in high-volume data systems.

The Senior Fullstack Developer is responsible for designing, developing, and maintaining software applications, managing projects, and ensuring integration of methodologies and tools, requiring 5 to 8 years of experience.

The Senior Full Stack Engineer will design and implement APIs with NodeJS, develop UIs with React, manage data pipelines, and deploy projects on AWS.

The Senior Full-Stack Engineer will develop claims monitoring tools and backend services, collaborate with other engineers, and influence the product architecture in a health insurance startup.

Lead the development and maintenance of content ingestion systems, oversee software feature design, communicate across teams, and mentor members.

As a Senior Full-Stack Engineer, you will develop and improve features for a digital clinic, ensuring quality patient care and software reliability across the stack including React and NestJS.

Design, implement, and deliver high-quality, performant frontend interfaces. Collaborate with cross-functional teams, optimize for SEO and user experience, and mentor junior engineers.

The role involves building web applications and APIs for blockchain-based investment products, optimizing front-end performance, and collaborating cross-functionally while maintaining technical excellence.

The Senior Full Stack Engineer will build platform services for analytics, feature flagging, and real-time UX, ensuring reliability and scalability while collaborating with cross-functional teams.

As a Senior Full-Stack Engineer, lead development of secure AI-driven SaaS applications, focusing on backend architecture, frontend design, and AI integrations. Collaborate with teams to operationalize models and enhance application functionality through cutting-edge AI solutions.

Design and build agent-powered mission consoles, collaborate with stakeholders to improve user workflows, and maintain agentic workflows for mission outcomes.

As a Full Stack Engineer, you will lead innovative software projects for freight logistics, driving technical vision, mentoring others, and delivering scalable solutions across platforms.

As a Senior Software Engineer, you will design and build a cutting-edge identity search platform and implement AI systems for defense applications, working closely with cross-functional teams to enhance user workflows and support national security.

As a Senior Full Stack Engineer, you'll design and develop custom Shopify applications, integrate solutions, and collaborate with clients to meet their needs.

Lead UI-focused full-stack development: build high-performance Angular components, implement responsive accessible interfaces from design mockups, optimize front-end performance, influence component libraries and front-end architecture, and contribute to back-end .NET Core APIs and database integration.

Lead the development of user-facing applications and backend systems, ensure best practices, mentor junior developers, and collaborate with stakeholders on product initiatives.

As a Senior Full Stack Engineer, you'll build high-performance observability tools, engage with developers, and tackle technical challenges in monitoring applications.

Responsible for leading a team of engineers, supporting product development, identifying technical issues, and ensuring high-quality code delivery in backend systems at scale.