Work Experience

From June 2013 to September 2018, at Time Intermedia Inc., I was involved in the development and operation of various systems including core systems, VOD web services, qualification management systems, and e-commerce services. I experienced growth from a development member to a development leader, also taking on team member training and PM support roles.

Since October 2018 at Studist Corporation, I have been working as an SRE and Product Tech Lead on service launches, operations, maintenance, development support, construction, and availability/performance improvements. From March 2023, I took on the role of Product Tech Lead, making technical decisions and realizing roadmaps. Starting from March 2025, I will serve as the final decision maker for all technical matters across the company, overseeing technical strategy, architecture, and engineering practices.

Since January 2019, while working as a company employee, I have been providing development and operational support to other companies as a sole proprietor, and from April 2024, I have also been active as the CEO of Labee LLC.

2019/01 ~
Support for Development and operation of web services

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.

2025/09 ~
VP of Technology

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.

    2025/03 ~ 2025/08
    Head of Product Tech Lead & Company-wide Technical Lead

    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.

      2023/03 ~ 2024/05
      Support for new feature development and establishment of specialized teams for LLM/AI

      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.

      2023/03 ~ 2025/02
      Head of Product Tech Lead

      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.

        2019/06 ~ 2020/12
        Migration of services to container platforms

        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.

        2021/01 ~ 2021/06
        Support for launching new services

        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.

          2018/10 ~
          Support for other teams and organizations

          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.

            2015/01 ~ 2018/06
            Development and operation of core systems and VOD web services

            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.

              2014/02 ~ 2014/12
              Development and operation of qualification management system

              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.

                2013/06 ~ 2014/01
                Development of secondhand goods e-commerce service

                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

                  NameRolePeriod
                  🔵Studist Corporation.SRE・Product Tech Lead・R&D2018/10 ~
                  🔵茨谷企画(BARATANI KIKAKU) - Self employment2019/01 ~
                  🔵Labee LLCFounder2024/04 ~
                  Time Intermedia Inc.Tech Lead・Engineer・PM Support2013/06 ~ 2018/09

                  Skills

                  Language

                  Ruby

                  Go

                  Python

                  JavaScript

                  Clojure

                  CI/CD

                  GitHub Actions

                  CircleCI

                  Argo CD

                  Monitoring

                  Elastic Stack

                  NewRelic

                  Datadog

                  Cloud Infrastructure

                  AWS

                  GCP

                  EKS

                  ECS

                  Tools

                  Ansible

                  Terraform

                  Docker

                  Kubernetes

                  LLM/AI

                  Amazon Bedrock

                  LangChain

                  Vector DB

                  RAG

                  Technical Strategy

                  Architecture Design

                  System Design

                  Performance Optimization

                  Organizational Development

                  Engineering Management

                  Team Building

                  Technical Leadership

                  Ko-fi