Senior) Lead Frontend Developer

Zalo-Thành phố Hồ Chí Minh, Vietnam

Hồ Chí Minh

Full-time

What you will do:

  • Lead frontend technical direction and own architecture decisions;
  • Design and develop high-quality, scalable features while managing technical debt strategically;
  • Plan sprints, assign tasks, support estimation, and review requirements with Product team;
  • Conduct code reviews and enforce coding standards to ensure quality and consistency;
  • Mentor junior and senior developers on coding practices, design patterns, and problem-solving;
  • Lead knowledge-sharing sessions and build a culture of continuous learning;
  • Act as primary liaison between Frontend, Product, Backend, QA, and Design teams;
  • Develop user interfaces using HTML5, JavaScript, CSS, ReactJS, and Zalo's frameworks (Miniapp, ZInstant);
  • Evaluate and adopt new technologies to improve build time, CI/CD, and development efficiency;
  • Drive performance optimization initiatives (load time, rendering, bundle size, responsiveness);
  • Monitor and ensure the best performance, quality, and responsiveness of interfaces.

What you will need:

  • 2-4+ years of frontend development experience;
  • (For Lead) 2+ years in technical leadership role (Tech Lead, Senior/Lead Developer);
  • Solid understanding of OOP principles, design patterns, and data structures & algorithms;
  • Deep expertise in modern frontend technologies: HTML5, CSS, JavaScript (ES6+), and frameworks like ReactJS;
  • Strong knowledge of responsive design, cross-browser compatibility, and performance optimization;
  • Proficiency with modern frontend tooling (Webpack, Vite, npm/yarn) and state management (Redux, Context API);
  • Experience with CSS preprocessors (Sass, Less) and CSS-in-JS solutions;
  • Proven experience optimizing web performance: bundle size, load time, rendering, memory usage;
  • Excellent communication and cross-functional collaboration skills;
  • Experience in leading and mentoring team members with focus on their career growth and skill development;
  • Strong sense of ownership, open-mindedness, and passion for continuous learning;
  • Team player who can work both independently and collaboratively;