Ai Agent Engineer Jobs in Tokyo, Tōkyō

Bilingual Machine Learning Engineer

Tokyo,
remote
Permanent
7.0M - 13.0M JPY / Yearly
Company ProfileA pioneer in Japan's Expert Network Services (ENS) industry, providing highly accurate knowledge matching across regions and language barriers for consulting firms and financial institutions, is looking for a Machine Learning Engineer to join its Tokyo office. The Role<ul><li>Lead the design and implementation of autonomous AI agents using predictive and generative models, working closely with English-speaking engineering teams based in the US and Europe.</li><li>Drive Japanese NLP and accuracy evaluation efforts - from preprocessing and chunking strategies to building systems that evaluate the accuracy of Japanese data.</li><li>Select and evaluate LLMs across multiple providers (OpenAI, Anthropic, Google, etc.), balancing cost optimization with system robustness.</li><li>Build CI/CD pipelines and institutionalize best practices around model training, monitoring, and version control (MLOps).</li><li>Optimize inference performance and scalability of machine learning models, and fine-tune LLMs for domain-specific use cases.</li><li>Join around 2-3 early-morning or evening online meetings per week to coordinate with overseas teams.</li></ul> Your Skills <ul><li>At least 3 years of practical ML and backend development experience, with the ability to independently understand and develop large-scale Python codebases.</li><li>Core hands-on experience in at least one of: LLM orchestration (structured outputs, tool use, agent workflows), ML pipelines with tabular data (feature engineering, ranking models/LTR, model evaluation), or modern DevOps/MLOps environments (Docker, pytest, CI/CD).</li><li>Bachelor's or master's degree in computer science, data science, mathematics, statistics, or equivalent experience.</li><li>Business-level English proficiency is required; everyday-conversation-level Japanese is a plus.</li><li>Public cloud development experience and experience growing a service in collaboration with non-engineers are advantageous.</li></ul> Key Highlights of the Role <ul><li>Directly shape the AI-driven transformation of a company's core "search and matching" business, backed by an 800,000-person expert network and billions of yen in revenue.</li><li>Own projects end-to-end, from problem definition and spec development through release and iteration, in an environment where your ideas carry real weight.</li><li>Build your career with an international outlook, collaborating across multi-site development hubs in Tokyo, the US, and the EU - with the option to work from the New York office.</li><li>Work with a modern AI/ML stack (Azure OpenAI, LangChain, LangGraph, Transformers) on high-impact, production-facing generative AI features.</li></ul> Location Tokyo Salary7 - 13 million yen Reference Number: 06940-0013481561 By clicking 'apply', you are deemed to have agreed to Robert Half Japan Privacy Notice (<a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>). Please ensure that your application documents do not include sensitive personal data such as race, beliefs, medical history, criminal record, or other information irrelevant to hiring process such as spouse or dependents. All information must be accurate and truthful, and any included hyperlinks must be safe and secure. <img src="https://counter.adcourier.com/U21haWwuU2FmaS4xMDY3NC4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
2026-08-03T06:57:38Z

Gen AI Engineer

Tokyo,
remote
Permanent
12.0M - 16.0M JPY / Yearly
Company ProfileLeading global insurance organization with operations in more than 80 countries is looking for a Gen AI Lead for its Digital Engineering team. The Role<ul><li>Develop Gen AI solutions end-to-end (architecture, design, development) while leading a team of Gen AI engineers.</li><li>Own delivery of Gen AI use cases across internal and external stakeholders, working closely with architecture teams.</li><li>Build and manage agents for business use cases, including monitoring/automating GCP agents.</li><li>Handle unit testing, troubleshooting, and bug fixes; maintain up-to-date technical documentation.</li><li>Coordinate with an offshore team to ensure delivery; report to the Head of Digital Engineering.</li></ul> Your Skills <ul><li>Japanese N2+ and business-level English required.</li><li>5-10 years of development experience, with significant Japan-based insurance experience (commercial/consumer lines).</li><li>Experience with Gen AI tools (GitHub Copilot, Claude Code, Google ADK) and agentic frameworks (LangChain, LangGraph, CrewAI) is a plus.</li><li>Strong background in Java, Python, Spring Boot, React/Angular, SQL/NoSQL, Docker/Kubernetes, and SOAP/RESTful APIs.</li><li>Familiarity with API management and messaging tools (APIGEE/APIM, RabbitMQ/Azure Service Bus/SQS) is ideal.</li></ul> Key Highlights of the Role <ul><li>Lead Gen AI architecture and delivery for a major global insurer.</li><li>Build and grow a Gen AI engineering team on high-impact use cases.</li><li>Work with cutting-edge Gen AI tools and agentic frameworks.</li><li>Join a stable, 100-year-old company with a presence in 80+ countries.</li></ul> Location Tokyo Salary12 - 16 million yen Reference Number: 06940-0013470135 By clicking 'apply', you are deemed to have agreed to Robert Half Japan Privacy Notice (<a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>). Please ensure that your application documents do not include sensitive personal data such as race, beliefs, medical history, criminal record, or other information irrelevant to hiring process such as spouse or dependents. All information must be accurate and truthful, and any included hyperlinks must be safe and secure. <img src="https://counter.adcourier.com/U21haWwuU2FmaS4wODY1MC4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
2026-07-15T07:00:36Z

2 results for Ai Agent Engineer in Tokyo, Tōkyō