DX consulting and custom system development for Japanese enterprises
IST is a Tokyo-based consulting and engineering firm founded in 2009, structured around direct partnerships with major corporations to replace traditional multi-layered subcontracting with in-house development teams. The hiring mix—11 engineers across director, lead, and senior roles, paired with 5 ops staff and executive layer—reflects a consulting-led delivery model. Active projects span DX strategy for cosmetics and finance, CRM modernization, and AI proof-of-concepts, with internal pain points centered on scaling operational capacity and team structure for growth.
Notable leadership hires: Director, Project Lead, PHP Lead, Consultant Director
IST provides digital transformation consulting and full-cycle system development for mid-market and enterprise clients across finance, retail, gaming, real estate, and HR. The company operates on a model explicitly designed to eliminate multi-layer subcontracting and engineer churn—positioning itself as an alternative to Japan's traditional development supply chain. Core service areas include DX strategy definition, agile system development from requirements through operations, and in-house digital support teams embedded with clients. The engineering stack spans Java, Spring, Go, React, Vue, Laravel, and PHP, deployed on AWS with Docker containerization. Based in Shibuya, Tokyo, the company is publicly listed and maintains 201–500 employees.
Java, Go, PHP, Ruby, C#, JavaScript, and TypeScript. IST also employs Spring Framework for backend services and Vue, React, and Angular for frontend development.
Finance, retail, gaming, real estate, and human resources. Current active projects include DX strategy for cosmetics manufacturers, CRM modernization, and AI adoption for urban banks.
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