Full Stack Engineer (AI Product Development) – Remote/Hybrid, Japan

We're seeking a skilled Full Stack Engineer to join a growing team focused on building AI-powered SaaS products. This is a hands-on engineering role ideal for someone passionate about creating scalable systems and working across the full development lifecycle—from backend to frontend. Responsibilities:Design, develop, and maintain web-based SaaS applicationsBuild and scale backend services and APIsDevelop responsive frontend interfaces using modern frameworksCollaborate closely with product, design, and AI teamsWrite clean, testable, and maintainable codeTech Stack:Backend: TypeScript, Node.js, PythonFrontend: React, TypeScript, Next.jsInfrastructure: GCP, Firebase, DockerRequirements:3+ years of experience in full stack web developmentProficiency in both backend and frontend technologiesExperience with cloud infrastructure and CI/CDStrong communication and collaboration skillsBusiness-level English (Japanese is a plus but not required)