AI-driven development Engineer(Full-Stack Engineer)
- Tokyo
- Remote OK - Anywhere in Japan
- Full-time
- September 1, 2025
Jobdiscription
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You will lead the end-to-end process—from ideation to development—of innovative services and products that leverage cutting-edge technologies such as AI, MaaS, FinTech, IoT, and VR.
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As an exceptional AI talent, you will not only maximize the value of AI-driven development, but also demonstrate an order of magnitude higher productivity than traditional engineers—10 times more efficient, revolutionary, and future-ready.
Details
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Streamlining a wide range of development tasks—including requirements definition, design, implementation, and testing—by leveraging AI assistance and AI agents.
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Evaluating and promoting the adoption of AI-driven development tools, such as IDEs like Cursor and Windsurf, and agent-based platforms like Bolt.new and Devin.
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Collaborating with internal project managers, directors, and designers to drive business success from a technical perspective.
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As a tech lead, define the technical direction of projects and guide the development team.
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As a full-stack engineer, lead development teams based primarily in Japan and Vietnam, driving projects to successful delivery.
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Demonstrate leadership beyond your area of expertise to drive project success.
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Responsible not only for design and development, but also for building CI/CD pipelines, formulating and executing deployment strategies, and driving stable operations and continuous improvement of the service.
Development environment
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Languages: Python / TypeScript / Java / Golang, etc.
- Cloud Platforms: AWS / Azure (including OpenAI) / GCP
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Development Support Tools: Cursor / Windsurf / GitHub Copilot, etc.
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Others: React / Vue / Flutter / Terraform / Docker / GitHub Actions
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Generative AI Models: GPT / Claude / Gemini, etc.
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Cloud Generative AI Platforms: AWS Bedrock / Azure OpenAI Service
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AI-Related Technology Libraries: ADK, LangChain, etc.
Required Qualifications
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Minimum 3 years of practical experience as a technical leader in web system development projects
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Experience with cloud development using AWS, Azure, or GCP
Preferred Qualifications
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Basic knowledge of machine learning and deep learning, with experience using related Python libraries
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Experience developing applications or agents using LLMs (e.g., LangChain)
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Experience customizing LLMs themselves
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Experience using AWS Bedrock or Azure OpenAI Service
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Practical knowledge of design and development processes such as Domain-Driven Design
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Leadership experience in upstream processes such as requirements definition and basic design
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Backend development experience using frameworks like Django or Spring
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Experience with environment setup using Docker and Terraform
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Experience with test automation and test-driven development
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Experience with agile development methodologies such as Scrum and XP
Desired Attributes
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Proactive learner who actively acquires and applies new technologies like AI
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Someone who objectively analyzes the advantages and disadvantages of new technologies on a regular basis
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Business-minded individual who can contribute to company-wide development efficiency and quality improvement
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Team player who values collaboration and works well with colleagues to advance development efforts
About Monstarlab
Monstarlab’s mission is to harness diversity and transform the world through technology.
Together with their clients, Monstarlab drives digital innovation and supports business transformation through co-creation.
Monstarlab’s services span digital product development, enterprise system development, design, strategy and operations consulting, and AI-driven development — all aimed at enabling client success and accelerating digital transformation.
The company also places great value on empowering each employee to take on new challenges. In a constantly evolving world, Monstarlab employees are encouraged to embrace change, enjoy the process of taking on challenges, and grow through cross-functional collaboration at the individual, team, and organizational levels.
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