Full Stack Developer (Node.js & AI Integration)

About the role

Loginet, an international automotive trading company focused on vehicle sourcing, sales and global exports, is hiring a Full Stack Developer in Tokyo. The company is investing in technology, automation and artificial intelligence to improve efficiency and scale its business, and wants a proactive developer to build, maintain and enhance internal platforms, customer-facing applications and AI-powered business solutions.

Key responsibilities

• Develop, maintain and optimize scalable web applications with Node.js
• Design, manage and optimize MongoDB and MySQL databases
• Build responsive user interfaces with Tailwind CSS
• Implement AI-powered solutions, including LLM integrations, intelligent automation and AI agents
• Develop RESTful APIs, integrate third-party services and build internal CRM, ERP and admin panels
• Automate workflows, fix technical issues, optimize performance and ensure security
• Collaborate with management and other developers and own tasks from planning to deployment

Required profile

• 3 to 5 years of professional software development experience
• Excellent spoken and written English (mandatory)
• Ability to work independently, solve complex problems and deliver production-ready solutions
• Preferred: experience with React.js or Next.js, AI agents and RAG systems, CRM/ERP systems, AWS, Docker and CI/CD, and cloud infrastructure and security

Required skills

• Node.js and JavaScript/TypeScript
• MongoDB and MySQL
• Tailwind CSS, HTML5 and modern frontend technologies
• RESTful APIs and database architecture
• Git, debugging, testing and deployment
• Hands-on experience integrating AI APIs such as OpenAI or Claude

What we offer

• Competitive salary based on experience and technical ability
• Full-time position in Japan with an international, multicultural environment
• Work on real-world AI implementations and core business platforms
• Long-term career development opportunities

Candidates apply through the company's careers portal, submitting an updated CV, GitHub profile or portfolio and examples of relevant projects, especially those involving Node.js, MongoDB, MySQL or AI integrations.