Kazumasa Matsumoto is a web engineer who transitioned into tech at 29 and has since accumulated eight years of experience, focusing the past six years on TypeScript-driven front-end and BFF development with Angular, React, Next.js and Nest.js. He’s known for stabilizing troubled projects through prioritization, refactoring, and test automation (Jest/Cypress), and for bridging multi-disciplinary and multilingual teams to remove specification ambiguities and accelerate delivery. A published author on blockchain for engineers and holder of AWS/Azure certifications, he pairs practical coding skills with a habit of continuous learning. Based in Kashiwa, he combines hands-on implementation with systems-level thinking to structure complex problems and push projects forward, and — not obvious from his CV — he’s a fan of the game Houkai Star Rail.
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