Full-Stack Generative AI Engineer

Date PostedJune 22, 2026LocationAsia Japan Tokyo ShinjukuCompanyDejimal IncSalaryJPY 6000K - JPY 12000KTypeit (pc, web, unix) - fullstack engineer

Job Summary

We are seeking a skilled Full-Stack Engineer to lead the research, development, and implementation of advanced AI-driven SaaS applications. You will work within an elite team to design highly efficient systems utilizing LLMs and modern web technologies. This role offers the opportunity to drive innovation in the Generative AI domain while building impactful products.

Responsibilities

  • Design and develop products using LLMs
  • Integrate and manage multiple APIs
  • Develop complex, scalable SaaS web applications
  • Lead backend framework development

Required Skills

  • Python & TypeScript/Next.js
  • Cloud platforms (GCP/AWS/Azure)
  • Containerization (Docker/Kubernetes)
  • LLM application development

Job Details

### Job Description You will be responsible for developing SaaS applications utilizing Generative AI. This includes designing and building highly efficient and reusable systems, and developing complex web applications. ### Specific Job Responsibilities - Product Development Utilizing LLM: Designing and developing products using Large-Scale Language Models (LLMs). - API Integration Projects: Driving projects to integrate multiple APIs and create new ones. - Design and Implementation: Designing and implementing with performance and maintainability in mind. - Web Application Development: Frontend development using TypeScript and Next.js. ### Development Environment - Languages: Python (framework), TypeScript / React / Next.js (frontend) - Infrastructure: GCP (containers / Ks), Docker - Tools: Slack, Jira, Google Workspace, GitHub ### Required Qualifications - Bachelor's or Master's degree in Computer Science, Artificial Intelligence, Machine Learning, or a related field. - 3+ years of experience in developing web applications using modern frameworks. - 2+ years of experience in server-side implementation. - Experience implementing in at least one backend language (Python, Java, etc.). - Experience with cloud services (AWS, GCP, Azure) and understanding of container technologies (Docker, Kubernetes). - Fluent in English or Japanese (Business level in either is acceptable). ### Preferred Qualifications - Experience in developing SaaS web applications. - Experience in designing and building large-scale and complex architectures. - Basic understanding of and interest in Generative AI. - Ability to keep up with the latest technology trends.