Job Description

Career Opportunity for a Backend Engineer in Japan!

■ Backend Engineer 

■ Company Overview

An e-commerce, fintech, digital content and communications company with more than 30,000 employees, and operations in 30 countries and regions.

■ Your Role and Responsibilities 

●This role requires 5+ years of backend development experience with strong expertise in microservices architecture, RESTful API design, and containerization technologies.

● Design and implement high-performance REST APIs, microservices, and event-driven architectures for AI applications

● Develop intelligent applications leveraging AI with seamless switching and mechanisms

● Build AI service integration layers and implement complex workflows including Retrieval-Augmented Generation (RAG) and agent systems

Implement comprehensive monitoring, security, and testing strategies for production AI systems

● Partner with cross-functional teams to translate AI product ideas into production-ready applications

■ Experience and Qualifications

● 5+ years of backend development experience with scalable web applications and APIs

● Strong expertise in Python, FastAPI, PostgreSQL, and Redis technologies

● Strong English communication skills and experience with collaborative development workflows

■ Additional Preferred Qualifications
● Experience with multiple LLM providers (OpenAI, Anthropic, Google Vertex AI) and frameworks like LangChain

● Knowledge of vector databases, embedding management, and cloud platforms (Azure, GCP, AWS)

● Experience with monitoring tools (Prometheus, Grafana) and AI/ML model deployment practices

● Knowledge and understanding of distributed systems and security best practices

● Japanese conversational proficiency is a plus

■ Good Reasons to Join

● Hybrid position in Japan

● Work with International team members

■ Work Location

Tokyo, Japan

Details will be provided during the meeting.