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

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.

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.

As a Senior Software Engineer, you'll implement collaboration features, support team architecture, work across tech stacks, and improve developer experience.

Design and implement AI-powered backend systems for media experiences in Dropbox, collaborating with cross-functional teams, and influencing technical decisions.

Lead full-stack projects, collaborate with teams to develop user-friendly features, mentor teammates, and handle on-call duties at Dropbox DocSend.

The role involves shipping full-stack AI projects, designing experiments for AI features, and optimizing AI infrastructure while collaborating with teams.

The role involves shipping quality code, managing end-to-end projects, collaborating to improve user experiences, and scaling billing infrastructure and analytics.

The role involves leading features and full stack development of the payment and billing systems, integrating payment solutions, and optimizing user experiences.

As a Senior Full Stack Engineer, you will design, build, and maintain products, enhance backend systems, and scale machine learning platforms in collaboration with the CTO and engineering team.

The Senior Full Stack Engineer will design and develop user-friendly experiences, lead product enhancements, mentor junior engineers, and participate in on-call rotations to ensure service reliability.

In this role, you will build backend systems, APIs, and data pipelines while enhancing Android features, integrating computer vision models into scalable applications.

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.

As a Senior Full Stack Engineer, you'll design and scale core features for Calendly's AI Notetaker, lead feature implementation, and mentor team members.

The Tech Lead/Full Stack Engineer will design core features, support system architecture, mentor junior engineers, and lead technical initiatives at Calendly.

Design and implement frontend and backend features for digital asset wallet infrastructure. Collaborate with teams to enhance performance and scalability.

In this role, you will design and develop advanced internal solutions using Node.js and React, mentor team members, and collaborate on Cloud-based architecture projects involving LLMs.

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.

The Senior Full Stack Engineer will engage in all software development stages, focusing on both front-end and back-end tasks, database integration, and system management while collaborating with teams to enhance consumer experiences.

As a Senior Fullstack Engineer, you'll architect and build a high-concurrency auction engine, leveraging AI for enhanced user experiences and system reliability.