Job Description

Career Opportunity for a Full stack Engineer in Japan!

■ Full stack Engineer 

■ Company Overview

We combine AI and conversation design expertise, provides brands the ability to easily create and integrate automated chat experiences, transforming post, story, or ad into personalized interactive experiences.

■ Your Role and Responsibilities 

●As a full stack engineer, you'll take full technical ownership of a key product domain (integration systems, data pipeline architecture, conversational AI engine, or client application layer)

●Lead end-to-end full-stack development, from front-end interfaces to  backend services and data storage

●Make system architecture decisions designed to scale to millions of concurrent users

●Provide technical leadership through expertise and execution, without direct reports

■ Experience and Qualifications

Technical Environment

Backend: Go microservices with Rails BFF layer

Frontend: React with TypeScript

Data: PostgreSQL with Redis caching

Infrastructure: Cloud-native deployment with container orchestration

Development: GitHub-based workflows with automated deployment

● 9+ years building production software systems

● 5+ years building scalable backend services in production environments with Go, and working knowledge of Ruby on Rails. Experience with other backend technologies

(Python, C#, Node.js, etc.) will also be considered

● 3+ years building modern web applications with React or Vue

● Experience with distributed systems design and microservices architecture

● Global state management in complex frontend applications

● Application monitoring, logging, and performance optimization

● Security implementation across authentication, authorization, and data protection

● Experience shipping features that measurably impacted business metrics

■ Additional Preferred Qualifications
● Server-side rendering or modern meta-frameworks (Remix, Next.js)

● Specific state management libraries (Jotai, Zustand, Recoil)

● Observability tools (application performance monitoring, distributed tracing)

● High-availability system operations and incident response

● Experience with AI-assisted development workflows and modern tooling (Cursor, Windsurf, AI-enhanced IDEs)

● Japanese conversational proficiency is a plus

■ Good Reasons to Join

● Full remote position within Japan

■ Work Location

Tokyo, Japan

Details will be provided during the meeting.