Lead/ Principal Front-end Engineer (ReactJS/ NextJS)

Our main requirements: 8+ years in web development; 5+ years in frontend engineering.3+ years experience in React.js and Next.js in production systems.Strong skills in JavaScript, TypeScript, HTML/CSS.Experience with testing frameworks like Jest or Mocha.Familiarity with CI/CD pipelines (GitHub Actions, CircleCI) and AWS-based infrastructure.Proven experience in setting frontend technical standards and mentoring engineers.Fluent English communication skills (TOEIC 750+ or equivalent required or tested during selection).In addition, we're also looking for a leader who:Thrives in cross-cultural teams and has experience working with or managing Vietnamese and Japanese engineers.Values teamwork, continuous improvement, and innovation.Thinks beyond just code—understands business impact, user experience, and long-term product value.Brings a strong curiosity for technology and passion to create user-centered products.Takes ownership to identify and resolve issues, driving the team and product forward.Nice to have: Experience leading frontend in a B2B SaaS context.Strong understanding of web security, performance optimization, and design systems.Familiarity with GraphQL, Playwright, Storybook, and Node.js build tools (e.g., Babel, webpack).