Top Senior Front End Developer Jobs in Denver & Boulder, CO

Lead architecture and build high-performance React 19 applications using TypeScript and modern patterns. Define design-system-driven components, optimize front-end performance, mentor teams, drive technical direction, and collaborate across product, design, and customers to deliver scalable enterprise UIs.

As a Principal Frontend Engineer, you will lead the design, development, and optimization of high-performance React applications while mentoring teams and driving technical direction across the organization.

Youtopia Marketplace seeks a Senior Front-End Engineer to develop high-performance UIs using Angular and Ionic for a 6-month contract, focusing on user experience and mobile application engineering.

Develop and maintain engaging web and mobile applications using Ionic and Angular. Collaborate on front-end requirements and ensure high-quality, maintainable code while mentoring junior engineers.

Develop and maintain responsive web and mobile applications using Ionic and Angular. Collaborate with teams, integrate APIs, and optimize UI components.

The role involves leading the frontend platform's evolution, architecting user interfaces, partnering with backend developers, and overseeing testing standards and CI/CD infrastructure.

Lead the evolution of the frontend platform, design complex user interfaces, provide technical leadership, and optimize CI/CD infrastructure for a scalable experience.

The Senior Software Engineer will design and implement web applications using React and Typescript, ensuring security and scalability while participating in Agile processes.

Seeking a Senior Software Engineer to build consumer-facing applications using React and React Native, influencing the technical roadmap and ensuring high-quality user experiences across platforms.

Develop and deliver high-quality front-end software for freight logistics. Lead design, mentor junior engineers, and enhance customer experiences using modern frameworks.

Senior Front-End Vue Developer focused on building and maintaining Vue.js applications, collaborating with teams, optimizing performance, and mentoring others.

Lead the frontend platform's evolution, architect complex UIs, mentor engineers, and drive performance and testing excellence while collaborating with cross-functional teams.

The Front End Developer will build web applications using React, work with RESTful services, and handle authentication using SAML or JWT while collaborating in an agile environment.

Design, build, and optimize high-performance TypeScript and React single-page applications, mentor team members, and advocate modern frontend practices while collaborating with cross-functional teams.

The Senior Front-End Engineer will architect financial products, lead design discussions, mentor team members, and ensure high-quality application delivery.

As a Staff Frontend Engineer, you will develop the Aerospike Cloud Platform, optimize front-end services, and mentor other developers while ensuring quality code and performance.

Develop and maintain WordPress websites, create custom themes and plugins, ensure cross-browser compatibility, and optimize for SEO. Provide guidance on user experience and explore new technologies.

As a Staff Engineer in the Prime UI Platform Team, you'll design core systems for frontend experiences, focusing on reliability and performance. You'll lead architecture decisions, develop APIs, optimize data streams, and enhance developer tools while collaborating with frontend engineers and product teams.

Build and ship geospatial web applications as a Senior Front-End Engineer, focusing on interactive UI features in a TypeScript/React environment.

As a Principal Frontend Engineer at ClickUp, you'll lead the design and technical vision of scalable front-end systems using Angular, collaborating across teams and mentoring engineers to enhance performance and coding standards.

The role involves architecting and implementing solutions for a subscription product, mentoring team members, and managing project priorities while focusing on growth metrics and operational health.

The Senior Software Engineer will design secure services to integrate with blockchains, build interfaces for digital currency apps, and collaborate with product teams. Responsibilities include writing well-tested code and enhancing user-facing features in web apps, while supporting a positive team environment.

Develop and integrate front-end components for online GIS applications, ensuring effective user experiences while collaborating with cross-functional teams to meet national security needs.

The Senior Frontend Engineer will develop user-friendly and scalable components for a data labeling platform, collaborating with teams and mentoring junior engineers.

As a Lead Front-End Engineer, you'll own UI architecture, mentor team members, manage technical initiatives, and drive AI-powered feature development.