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.

2025/03 ~
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