Masamichi Iimori
Tech Lead & Full Stack Engineer
Summary
Product-focused Tech Lead and Full Stack Engineer with 5+ years of experience building end-to-end BtoB SaaS applications using Ruby on Rails, TypeScript (React/Next.js), and Go. Expert in designing responsive user experiences backed by robust asynchronous architectures and scalable cloud infrastructure. Proven track record of accelerating customer value delivery by optimizing development workflows, fostering agile team cultures, and bridging the gap between complex backend logic and intuitive frontend interfaces.
Skills
Languages
Frameworks
Infrastructure & Tools
Methodologies
AI Tools
Work Experience
Led end-to-end development of AI-powered automated manual generation tool for BtoB SaaS video platform as Tech Lead, securing major enterprise contracts.
Optimized video editing tool performance and led Scrum process improvements as Fullstack Engineer, reducing wait times by 50% and improving UX satisfaction by 70%.
Architected fault-tolerant webhook synchronization platform using AWS SNS/SQS/Lambda as Backend Engineer, achieving 100% event delivery reliability.
Full-Stack Engineer (Founding Member)
Jun 2021 - Aug 2022
Co-founded engineering team and built Anime/Illustration NFT marketplace from scratch using Next.js and Node.js, acquiring 500+ users in under 2 months.
Full-Stack Engineer
Aug 2019 - Aug 2021
Led backend migration from legacy monolith to modular Nest.js architecture and developed construction management tool POC approved for commercial development.
Projects
Certifications
Database Specialist Examination
IPA
Publications
Wearable Augmented Reality System Using Head-Mounted Projector
Masamichi Iimori, Takashi Komuro
Advances in Visual Computing, ISVC 2021