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

Lead the design, development, and maintenance of core applications, focusing on system integrations and managing multiple third-party applications while mentoring junior developers.

The Senior Platform Engineer will develop features for an ecommerce platform, mentor engineers, optimize systems, and improve tools and processes.

The role involves backend development for a new venture team, focusing on building scalable systems, collaborating on product strategy, and launching an MVP.

Lead and modernize core Laravel/PHP backend systems and high-performance React/TypeScript frontends. Architect integrations (MLS/RETS/RESO), improve video processing and media delivery, strengthen CI/CD and Docker deployments on AWS/Rackspace, introduce AI-driven automation, and provide senior technical leadership and mentorship.

Design and build scalable features for MongoDB's Internal Developer Portal using Backstage. Collaborate with teams to enhance developer workflows and internal tools.

The Senior Full Stack Engineer will develop scalable applications, manage both front-end and back-end tasks, and enhance platform engineering practices. Responsibilities include API development, database design, and technical documentation.

The Senior Full-Stack Developer will design, build, and maintain AIO Logic's cloud-based AXIS platform, utilizing React and Java/Spring Boot to deliver software solutions for complex financial workflows, collaborating with cross-functional teams, and mentoring junior developers.

The Senior Full Stack Software Engineer will design and develop scalable web applications, work across the stack, collaborate with teams, and integrate AI features while mentoring junior developers.

The Senior Full Stack Software Engineer at Dropbox will design and develop user-friendly experiences, manage projects end-to-end, and collaborate across teams while leading initiatives and delivering AI-enabled product enhancements.

Design, build, deploy, and optimize scalable full-stack applications integrating databases, APIs, and AI/LLM workflows. Lead architecture, CI/CD (ArgoCD, GitLab), Airflow pipelines, and collaborate cross-functionally to deliver production-grade fintech solutions.

Join the Entefy team as a Senior Full Stack Engineer to build a scalable full stack application enhancing digital interaction for global clients.

Lead full-stack projects, collaborate with cross-functional teams, set high quality standards, mentor teammates, and participate in on-call rotations.

The Senior Full-Stack Software Engineer will design, build, and scale SaaS products, improve application performance, and lead technical initiatives. Responsibilities include modernizing web applications, contributing to backend services, and mentoring other engineers.

The role involves leading projects as a full-stack engineer, focusing on SaaS products, enhancing user experiences, and building accessible software.

Lead technical discussions and design products based on vehicle telematics data. Collaborate with teams, ship features, and ensure customer satisfaction using real-time data insights.

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'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.

Seeking a Senior Full-Stack Engineer to design and develop applications, architect scalable systems, and lead teams in a remote-first environment.

As a Senior Full-Stack and Platform Software Engineer at mabl, you will develop features for an AI-powered test automation platform, enhancing user experiences, designing APIs, and optimizing data pipelines while collaborating with cross-functional teams.

As a Senior Full-Stack Engineer, you'll oversee backend microservices and frontend applications, mentor engineers, and drive technical strategy in a fintech environment.

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

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.

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.

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