Work Experience

• VP of Technology

  2025/09 –

  Studist Corporation.

  As VP of Technology, serves as the final decision maker for all technical matters across the company, overseeing technical strategy, architecture decisions, and engineering practices at the company level.

• Head of Product Tech Lead & Company-wide Technical Lead

  2025/03 – 2025/08

  Studist Corporation.

  In addition to the role of Product Tech Lead, I have taken on the responsibility of being the final decision maker for all technical matters across the company. This includes overseeing technical strategy, architecture decisions, and engineering practices at the company level.

• Developing and maintaining in-house products

  2024/04 –

  Labee LLC

  I founded Labee LLC and focus on developing and maintaining in-house products, while occasionally taking on client projects.

  • Labee LLC

• Head of Product Tech Lead

  2023/03 – 2025/02

  Studist Corporation.

  Has finally responsibility and decision-making for technical decisions in specific products and for the technical aspects of roadmap realization. Provides recommendations and support for technical decisions that are not limited to a specific product, but that cut across the entire organization.

• Support for new feature development and establishment of specialized teams for LLM/AI

  2023/03 – 2024/05

  Studist Corporation.

  Involved in development from PM to development in organizational new feature development for LLM/AI. Also supported the establishment of a specialized team for LLM/AI until it was established.

  • AWS Startup Blog(ja)
  • Findy Tools(ja)

• Support for launching new services

  2021/01 – 2021/06

  Studist Corporation.

  I was working on the cloud infrastructure, development environment, and CI/CD for a new service launch. The service was developed in Clojure, but since the company's standard APM did not support Ring, we had to implement middleware to support it for the company.

• Migration of services to container platforms

  2019/06 – 2020/12

  Studist Corporation.

  We built and deployed various internal services, including services that have been developed and operated since 2013, using containers from development to production. We switched from EC2 to EKS infrastructure without shutting down the service.

  • Migration of services to container platform(ja)

• Support for Development and operation of web services

  2019/01 –

  茨谷企画(BARATANI KIKAKU) - Self employment

  As a sole proprietor, I assist various companies in the development and operation of web services. For more information, please check the link.

  • BARATANI KIKAKU

• Support for other teams and organizations

  2018/10 –

  Studist Corporation.

  As an Enabling SRE and Tech Lead, we provide consultation and support for decision making based on container technology, systems, and various architectures, how to create applications and infrastructure with post-release operations in mind, and development and operations as needed.

• Development and operation of core systems and VOD web services

  2015/01 – 2018/06

  TIMEINTERMEDIA, Inc.

  In the beginning, I developed a core system for managing contents as a development member, and from the middle of the project, I was engaged in the design and development of web services for general users as a development leader. From the middle of the project, I was also engaged in the development and operation of web services in the same family.

• Development and operation of qualification management system

  2014/02 – 2014/12

  TIMEINTERMEDIA, Inc.

  I worked on development as a development member, and after release, I worked on development and operations as a development leader. It was a good opportunity to learn about projects I have been involved in since my part-time job, Git, Ruby on Rails, multi-person development and execution, and project management. I learned about the attitude of reporting bugs in the libraries we use, and I also introduced and practiced test-driven development to prevent this from happening.

• Development of secondhand goods e-commerce service

  2013/06 – 2014/01

  TIMEINTERMEDIA, Inc.

  At the time, I was working almost full-time in development as a part-time student worker. I learned about the tools and concepts used in development at the time. I also learned about Spring Framework, service performance, Git, Mercurial, and other technologies for the first time.

affiliation

Skills

Everything here is something I've used for real work — not a complete list.

Languages

Ruby, Go, Swift, TypeScript, Python, Shell, C++, C#, Dart, Java, Rust, Lua

Infrastructure & Reliability

AWS, Google Cloud, Cloudflare, Vercel, Kubernetes, Argo, Terraform, Ansible, GitHub Actions, Xcode Cloud, CircleCI, Renovate, Prometheus, Elastic Stack, NewRelic, Datadog

Web

Ruby on Rails, Vue.js, Next.js, Astro

Apple Platforms

SwiftUI, Metal, Core ML

LLM & AI Agents

Claude Code, MCP, Amazon Bedrock, Apple Foundation Models, RAG, Vector DB

Technology Leadership

Technical Strategy, Architecture, Engineering Practices, Security, Organizational Design