Top Front End Developer Jobs in Leon

The Software Engineer will develop and maintain UI components for Dropbox's design system, build AI-powered tooling, and integrate AI into workflows to enhance product development.

Design, develop, and maintain large-scale Angular applications using NGRX and RxJS. Implement best practices for performance, responsiveness, and cross-browser support. Integrate with backend RESTful APIs, participate in code reviews, mentor junior developers, and write clean, testable code.

Build and launch conversion-focused landing pages, advertorials, and funnels for DTC brands. Run rapid experiments and A/B tests, implement analytics/tracking (GA4, GTM, Hotjar), optimize mobile performance and page speed, collaborate with paid media and creative teams, assist with direct-response copy, and create scalable processes for faster launches.

Seeking a passionate UI Developer to build user interfaces using React, maintain dashboards, and collaborate with designers and product managers.

Build and maintain responsive, accessible web interfaces for a consumer health platform using React and TypeScript. Translate designs into performant UI, create reusable components, integrate REST/GraphQL APIs, collaborate with product/design/backend teams, participate in code reviews, and optimize frontend performance across devices and browsers.

The Senior Front-End Developer will lead technical projects, develop robust front-end applications using React and Angular, and collaborate with teams to ensure integration and quality standards.

Seeking a Front-End Engineer to develop React applications, focusing on UI design, performance optimization, and collaboration with teams for high-quality product delivery.

You will drive the product's frontend look and feel, build UIs for complex data, ensure consistent designs, and enhance development velocity. This role requires strong React/TypeScript skills, a builder's mindset, and a focus on performance and design sensibility.

The Frontend Developer will replace components, optimize UI workflows, collaborate with backend teams, and improve development processes.

Lead the Pro team to design, develop, and deliver frontend systems for Kraken's trading interface, focusing on user experience and mentoring engineers.

Design and implement developer-facing UI from Figma to production using Hotwire (Turbo + Stimulus) and ViewComponents. Own the dashboard, API playgrounds, docs, marketing site, and data visualization. Optimize performance and bundle size, maintain a coherent component system, and ship polished, production-ready front-end with tests and CI/CD.

Experienced frontend engineer responsible for defining scalable front-end architectures, building reusable component libraries and design systems, optimizing browser performance and accessibility, mentoring engineers, collaborating with product and backend teams, contributing full-stack as needed, and participating in on-call incident resolution and postmortems.

Develop and maintain Ubegos frontend products: mobile/web quest experiences, user and creator dashboards, admin panel, marketing features, and third-party integrations. Work in one-week Scrum sprints, perform code reviews, contribute to software architecture, and use modern frontend frameworks, relational databases, and AI-assisted coding tools.