About this role
Senior Software Engineer, Display Ads Group, Ad Product Development Department (GATD) at Rakuten. Location: Tokyo, Tokyo, Japan. Role: leading architecture, mentoring engineers, designing systems Requirements: 10+ years software engineering experience (3+ years principal/architect), deep Java and cloud-native (GCP) expertise, production LLM/agent experience, proficiency with relational and NoSQL databases, and experience with AI-assisted development workflows. Category: Software Development Seniority: Senior Level Tools: Java, Spring Boot/Batch, JavaScript, TypeScript, HTML5, CSS3, MariaDB, MySQL, MongoDB, GCP, BigQuery, DataProc, Composer, LangChain, LangGraph, n8n, ADK, MCP (Model Context Protocol), LangFuse, Claude Code, Cursor, GitHub Copilot, Git, Jira, React.js, Angular, Redis, Couchbase, Cassandra, Kafka, RabbitMQ, Jenkins, JUnit, SonarQube, ClickHouse, Hadoop, Spark, Hive, Tez, Presto, MicroStrategy, Tableau Commitment: Full Time Workplace: Onsite Languages: English