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Job ID : 1563361 Date Updated : October 29th, 2025
English speaking role

No Japanese Required Senior Frontend Engineer

Hiring Company Saas & AI company
Location Tokyo - 23 Wards, Shinjuku-ku
Job Type Permanent Full-time
Salary 8 million yen ~ 15 million yen

Work Style

Casual Clothing Side Business Ok Minimal Overtime Flex Time

Job Description

Key Responsibilities

  • Design, develop, and maintain high-quality web applications using React and TypeScript
  • Lead architectural discussions and make key technical decisions
  • Resolve complex issues such as performance bottlenecks and legacy debt reduction
  • Write efficient, maintainable, and scalable code following best practices
  • Mentor and review junior engineers to raise overall team capability
  • Collaborate closely with product managers, designers, and business stakeholders
  • Stay updated with the latest frontend and SaaS technologies, and promote their adoption

 

Expected Role

You will act as the technical leader of the frontend team — focusing purely on engineering excellence and technical strategy (people management is handled by an Engineering Manager).
Your leadership will directly shape the engineering culture, product quality, and technical standards of the organization.

Tech Stack

Frontend: React, TypeScript, OpenAPI
Backend: Python
Cloud: AWS, GCP
Containerization: Docker, AWS Lambda
Databases: MongoDB, MySQL, AWS RDS, DynamoDB, OpenSearch, Redis
CI/CD: GitHub Actions, CircleCI, Jenkins
Architecture: Domain-Driven Design (DDD)
Version Control: GitHub
Tools: Slack, Jira, Confluence, Google Workspace
AI Tools: JAPAN AI, GitHub Copilot, Claude 3.5
(All AI tools are fully company-subsidized.)
Hardware: Windows or Mac (selectable)

Work Style

Hybrid work model: 3 days in the office, 2 days remote.

General Requirements

Minimum Experience Level Over 6 years
Career Level Mid Career
Minimum English Level Business Level (Amount Used: English Only)
Minimum Japanese Level None
Minimum Education Level Bachelor's Degree
Visa Status Permission to work in Japan required

Required Skills

Must-Have

  • 4+ years of frontend development experience using React
  • Experience building enterprise SaaS applications
  • 2+ years of mentoring or technical leadership experience
  • Hands-on experience with AWS or GCP
  • Solid understanding of SQL and NoSQL databases

Nice-to-Have

  • Experience as an Engineering Manager or Tech Lead
  • Experience with automated testing frameworks
  • Vietnamese language skills (for collaboration with Geniee Vietnam)

Job Location

  • Tokyo - 23 Wards, Shinjuku-ku

Work Conditions

Job Type Permanent Full-time
Salary 8 million yen ~ 15 million yen
Salary Bonuses Bonuses included in indicated salary.
Work Hours 10:00~19:00
Holidays 完全週休二日制 所定休日:土・日・祝日 休暇:年次有給休暇、夏季休暇(3日)、年末年始休暇(12月31日〜1月3日)、慶弔休暇
Industry Internet, Web Services

Job Category

Company Details

Company Type Large Company (more than 300 employees)
Non-Japanese Ratio Majority Japanese