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Lead JavaScript Software Engineer

Hybrid in Mexico: Guadalajara
JavaScript (Fullstack)& 2 others
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We are seeking a Lead JavaScript Software Engineer with a passion for building rich, responsive web and hybrid-mobile applications. In this role, you will leverage your expertise in JavaScript/TypeScript, React and Next.js to deliver fast, SEO-friendly and mobile-first user interfaces, working closely with backend engineers, UX designers and product owners to translate interactive designs into clean, modular and reusable front-end code.

Responsibilities
  • Design and build high-performance, responsive web applications using React and Next.js (utilizing features like SSR, SSG and API routes)
  • Implement pixel-perfect, mobile-first designs that adapt seamlessly across devices, with a specific focus on optimizing layouts, animations and touch interactions for mobile viewports (including iOS/Android browsers)
  • Manage complex client-side state (e.g. Redux, Zustand, Context API) and integrate applications with backend RESTful or GraphQL APIs
  • Profile and optimize applications for maximum loading speed, Core Web Vitals and smooth rendering on lower-powered mobile devices
  • Craft exceptional web experiences that look and feel like native mobile apps
  • Optimize performance for both desktop and mobile web view browsers (including iOS Safari)
  • Write clean, maintainable and testable JavaScript/TypeScript
  • Conduct thorough code reviews and contribute to the shared UI component library
Requirements
  • 5+ years of experience in software development
  • Proven experience in modern web development with a strong focus on building user-facing features
  • Advanced knowledge of JavaScript (ES6+), TypeScript and React
  • Practical experience with the Next.js framework (App Router or Pages Router, Server Components)
  • Familiarity with modern CSS frameworks or methodologies (e.g. Tailwind CSS, styled-components, CSS Modules)
  • Experience in optimizing web apps for mobile browsers, PWAs (Progressive Web Apps), or integrating web views within hybrid mobile containers
  • Experience with Git and working in an Agile/Scrum development cycle
  • English proficiency at B2 level or higher