Top Front End Developer Jobs in Denver & Boulder, CO

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.

The Staff Frontend Engineer will lead frontend architecture, build high-performance React applications, mentor junior engineers, and collaborate closely with product teams to enhance user experiences.

Build and maintain React-based micro front-ends and contribute to the frontend platform. Collaborate with designers, backend engineers, and product to implement accessible, responsive interfaces, optimize GraphQL data fetching, write unit/integration tests, participate in code reviews, and manage CI/CD pipelines using NX and CircleCI.

Lead and develop features for the Risk Cloud platform while collaborating across teams and advocating modern engineering best practices.

Lead front-end technical strategy for Coinbase Advanced trading platform: define and execute a scalable roadmap, deliver a low-latency interface across web and mobile, mentor engineers, anchor complex projects, and ensure high standards for code quality and system design.

The Sr. Software Engineer, Front End will develop 2D and 3D frontend features, drive architectural direction, mentor junior engineers, and address technical debt under high accountability in a complex simulation environment.

Build and maintain performant web and mobile trading interfaces using React/React Native and TypeScript. Implement trading flows, wallet integration, real-time data visualization, reusable component libraries, and optimize UI performance under high-frequency updates while handling edge cases and collaborating with backend and wallet engineers.

Seeking a skilled Front-End React Developer with 3-5 years of experience to develop responsive web applications, optimize performance, and collaborate in an agile environment.

As a Front-End Engineer, you will build and refine user-facing components, ensuring responsiveness, performance, and user experience through collaboration with UI/UX and backend teams.

Develop and maintain Java backend services for enterprise blockchain applications, integrate APIs with React/Vue frontends, design scalable blockchain solutions, troubleshoot complex backend issues, and collaborate with the team to apply best practices and stay current with blockchain trends.

Design, develop, and deliver front-end enterprise solutions in a consulting environment. Collaborate with designers and clients to convert designs into accessible, responsive, cross-browser implementations, apply front-end patterns and best practices, mentor teammates, and contribute to CI/CD, testing, containerization, and cloud deployment workflows.

Build sophisticated user interfaces for AI and blockchain interactions, including monitoring tools and decentralized application interfaces, while collaborating across teams for seamless user experience.

Design, build, and maintain high-performance Next.js + TypeScript front-end applications. Implement responsive, accessible UIs, optimize rendering and bundle size, integrate with REST and WebSocket APIs, contribute to back-end work as needed, uphold testing and documentation standards, and mentor junior engineers.

Design, build, and maintain scalable frontend applications using Vue 3 and TypeScript. Own feature delivery from design through production, build reusable components and architecture, improve performance and accessibility, collaborate with backend teams on APIs, write tests, mentor engineers, and help shape frontend tooling, CI/CD, observability, and security practices.

The Staff Front End Engineer will lead technical direction, improve app features, mentor engineers, and collaborate with cross-functional teams using React Native.

Design and implement frontend applications using JS, CSS, React, and Flutter. Collaborate on technical specs and contribute to documentation, ensuring user experience and performance.

Design, implement, and maintain data-focused products as part of a distributed team, ensuring high-quality code and user interfaces.

As a Principal Software Engineer, you will lead frontend development using React and TypeScript, mentor teams, and drive technical excellence in high-impact web applications. Responsibilities include designing scalable systems, optimizing performance, and collaborating with cross-functional teams.

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.

Front end developers ensure web design and user experience alignment, optimize web pages, and maintain brand consistency, collaborating with various teams.

Develop modern web applications focusing on UI components using React while ensuring performance, accessibility, and cross-browser compatibility.

Own front-end development of web applications using React and TypeScript. Build reusable components, collaborate with design/backend/AI teams, integrate APIs, optimize performance and accessibility, and iterate via A/B testing and analytics.

As a Senior Frontend Engineer at Cinch, you'll lead the modernization and performance optimization of React-based user interfaces, collaborate with cross-functional teams, and architect scalable UI systems with a focus on AI-driven experiences.

The Front End Engineer will lead teams in front-end development, establish coding standards, consult on architecture, and ensure high-quality web applications.