Position: Full Stack Engineer
Location: Tokyo, Japan
Salary: Up to ¥10,000,000 per year
Language Requirements: No Japanese Required
About the Company
Founded in 2014, this Tokyo-based startup is on a mission to eliminate language barriers on the internet. Their flagship SaaS product enables websites and mobile apps to be multilingualized into 45 languages in as little as five minutes, with automation features that support ongoing localization. With over 18,000 digital platforms already using the solution, they are a trusted partner for global enterprises aiming to expand internationally or engage foreign talent.
The company fosters a highly international and collaborative environment. English is the official language, and many team members are non-Japanese.
Job Description
As a Full Stack Engineer, you’ll be part of a cross-functional development team responsible for building localization and translation tools used globally. You’ll work across the stack, contribute to architectural decisions, and collaborate closely with designers, product owners, and fellow developers.
This role is ideal for individuals passionate about creating inclusive technology, eager to collaborate across disciplines, and aligned with agile practices—particularly the LeSS (Large-Scale Scrum) framework.
Your responsibilities may include the following:
- Develop and maintain multilingual web, mobile, and video localization platforms
- Build backend services using Ruby on Rails, Python, or Golang
- Work on frontend components with Vue.js and TypeScript
- Collaborate in two-week sprint cycles with cross-functional teams
- Proactively use AI agents and real-time collaboration methods, including mob programming and whiteboarding
- Contribute to requirements analysis, UI/UX design, and testing
Tech Stack
- Frontend: Vue.js, TypeScript
- Backend: Ruby on Rails, Python, Golang, Rust
- Mobile: Objective-C, Swift, Java, React Native
- Cloud: AWS, GCP, Azure
- CI/CD & Tools: GitHub Actions, CircleCI, Jenkins, Miro, Figma, Jira, Confluence
Requirements
Must-Have:
- Over 3 years of development experience with web frameworks like Ruby on Rails
- Experience designing and managing relational or NoSQL databases
- Strong cloud development experience with platforms like AWS
- Interest in internationalization (i18n) and language tech
- Comfortable communicating in English
- Full-stack mindset with willingness to take ownership beyond coding
- Alignment with company philosophy: in-office work, agile (LeSS) mindset, openness to AI tools
Nice-to-Have:
- Background in building large-scale systems
- Experience with security best practices
- Proficiency in testing (unit and end-to-end)
- Knowledge of algorithms and data structures
- Familiarity with integrating AI in development
- Experience with customer research or UX validation
Work Conditions
- Annual Salary: Up to ¥10,000,000
- Employment Type: Full-time (Regular Employment)
- Trial Period: 3 months
- Working Hours: Standard with 60-minute break
- Transportation: Covered per company policy
- Insurance: Full coverage (health, etc.)