Tat Sakanoue坂之上 達成 / Tatsunari Sakanoue

Born in Gifu. He began his engineering career at a systems integrator in Gifu, then went independent, serving as CTO and technical advisor on multiple projects, mainly for startups in Nagoya and Tokyo. To turn years of software development expertise toward local challenges, he leads the entire technology domain, from implementing large language models (LLMs) to building secure hosting infrastructure.

TECPRESSO Inc., the company he leads, is an infrastructure engineering company that combines servers, networks, cloud and security to keep services running on the internet. For more than 12 years it has supported the business infrastructure of customers ranging from small businesses to large enterprises and the public sector.

At Yanagase Tech

• Design, build and operation of the on-premises AI server "AI Kinko"
• Development of the management platform for the Business eSIM service
• Information security (ISMS certification and operations support) and system development

Selected work

• 2026Speaker at SAKURA internet's "SAKURA DEKIRU Conference 2026 PARTNER DAY" (November 25)
• 2025TECPRESSO Inc. obtained ISMS cloud security certification (ISO/IEC 27017) for the operation of PRESSO SERVER
• 2013 –Founded TECPRESSO Inc.; develops and operates its own services, including the managed hosting service "PRESSO SERVER", the international hosting service "WebhostingM", and the cloud VPN / RADIUS service "Cypherlayer" born from joint academic research

See TECPRESSO's site for more.