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

Job overview and responsibility

Our client is seeking a Frontend Engineering Leader to drive the frontend development of their B2B SaaS platform in the accounting domain. In this role, you will lead the technical strategy, development, and mentoring for frontend teams across Japan and Vietnam delivering high-quality user experiences and collaborating closely with global product teams.

This is a key position to scale the product globally and help build an exciting developer culture in the Kansai region (Osaka, Kyoto) and beyond.

Key responsibilities

- Lead and mentor frontend teams across Japan and Vietnam.
- Drive frontend technical strategy, architecture, and roadmap.
- Design and build scalable, high-performing web applications using React.js, Next.js, and TypeScript.
- Ensure high standards in code quality, UX, performance, and accessibility.
- Collaborate closely with Product Managers, Designers, and Backend Engineers.
- Promote knowledge sharing, modern development practices, and CI/CD automation.
- Own and evolve the frontend development environment and workflows.
- Support junior/mid-level engineers in their growth and learning.

Required skills and experiences

- 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.

Preferred skills and experiences

- 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).

Why Candidate should apply this position
Financial Benefits:
- Attractive Salary Package comparing with market standard
- Insurance based on full salary (Social Insurance, Health Insurance, Unemployment Insurance)
- Private health insurance and accident insurance
- Full salary during probation period
- 16-24 paid leaves per year

Working environment

- Very well-equipped facility: Macbook Pro, Additional monitor
- Hybrid working model with 2 working days in office per week
- Annual Company trip and Quarterly T eam building
- Working in an international environment with nice and supportive colleagues
- Work life balance environment
- Sport clubs in the company for engagement activities: billiard club, running club

Career Development

- Clear Career path
- Strong sponsoring from companies for various technology courses and certifications
- External & internal training courses
- Soft-skill workshops
- Tech seminars
- Monthly and biannual Recognition Awards
- Performance & salary review: twice/year (Jun & Dec)

Report to

Engineering Director

Interview process

3 interview rounds:
- Technical Interview in English (90 mins)
- Interview with Engineer Director & Engineer Manager
- Bar Raiser Interview with Engineer Director