Portfolio

• BeaverCoding :: Education - Frontend Lecturer for NextRunners (2024.11 ~ 2025.02)

  • Provide lectures about how to develop frontend

    React.js with vite, Supabase

• BeaverCoding :: Education - Frontend Lecturer for NextRunners (2024.09 ~ 2024.12)

  • Provide lectures about how to develop frontend

    React.js with vite, Supabase

• BeaverCoding :: Education - Full-Stack Mentoring for Codeit(2024.09 ~ 2025.04)

  • Provide advisory comments for students’ source code

    React.js, Next.js, Express.js

• BeaverCoding :: Integrating Project Management System Frontend for SK C&C (2024.07 ~ 2024.09)

  • Develop Next.js Frontend

    Configure CI/CD pipeline

    Support technical education for project teammates

    Configure monorepo project with pnpm

• BeaverCoding :: Integrating Vehicle Loan Comparison System Backend for StarAutomobile Inc. (2023.11 ~ 2024.5)

  • Develop Nest.js + Typeorm Backend

    Configure unit test process using jest

    Support technical requirements for project teammates

    Configure CI/CD pipeline

  • Provide technical advisories

• BeaverCoding :: Education - Backend Mentoring for NextRunners (2023.03 ~ 2023.12)

  • Provide mentoring sessions for Python students

    JavaScript, Git, Github, AWS, Flask, Django, AWS

• Anychat :: 2023.06.07 ~ 2023.09.07

  • Lead a Platform Development Team

    React.js, React Native FE Tech Lead

    Node.js Tech Lead

    DevOps and Infrastructure Tech Lead

• Ucompanion :: Vice Director in Business Service Department 2 (2023.02.17 ~ 2023.05.31)

  • Deliver proposal presentations for getting business orders (Technical Advisory)
  • Develop Video Education Solution

• BeaverCoding :: 2022.04 ~ Now

  • Run a sole proprietor business in 2022.04 for freelancing

    Node.js BE Development, Advisory, Tech Lead

    React.js, React Native FE Development, Advisory, Tech Lead

    Setting Projects, Advisory for project management

    Mentoring, Education

• Freelancer :: 2021.10 ~ Now

  • Integrate LineBank Japan Corporate Website (2021.10 ~ 2023.01)

    Improve FrontEnd development process

    Improve Gitlab CI, Ansible Tower CI-CD process

    Configure e2e test process using Cypress

    Improve unit test process using jest

    Design a text input component for general Japanese Kana/Kanji validation

    Re-configure FE project tech documents

    Support technical requirement for project teammates

    Support communication between the project managers and the Backend/Frontend developers

    Conduct training sessions for colleague developers (at least 5 sessions)

• ActBase Co.LTD / Deputy Manager :: 2021.01 ~ 2021.09

  • Lead tech strategy and train interns (2021.06 ~ 2021.09)

  • Develop KSD(Korea Securities Depository) E-vote webapp FE (Next.js pages router)(2021.03 ~ 2021.07)

    Introduce Redmine to manage project

    Conduct training sessions for the teammates in ordering company (at least 10 sessions)

  • Develop and design KSD E-notice webapp FE (Next.js)(2021.01 ~ 2021.03)

    Managing the technical process for the project

• EpicLions / CEO :: 2019.07 ~ 2020.11

  • Start and operate an outsourcing development company

    React.js, React Native, Node.js, Spring Boot, Postgres

• Ninestone :: 2019.01 ~ 2019.06

  • Design and Develop payment gate backend based on blockchain(Ethereum token)

    Node.js, Express.js, React.js

• HashBlock → Kudaha(employment succession) → Medium(change in company name) :: 2018.06 ~ 2018.12

  • (Medium) Participate in blockchain core development based on hyperledger (2018.09 ~ 2018.12)

    Conduct load testing, profiling

    Investigate crypto algorithms (ECDSA)

    C++

  • (HashBlock) Develop and operate a survey webapp based on blockchain (2018.06 ~ 2018.09)

    Java Spring Boot, React.js, React Native

    (Hybrid webapp + Cross-platform mobile app)

• AccuraSoft(Reserch Engineer) :: 2016.12 ~ 2018.05

  • Design MES (2017.11 ~ 2018.05)

    Project management, Design Database, Develop

    Java Spring Boot, Angular.js, Oracle

  • Develop SK hynix MaskMap (2017.08 ~ 2017.10)

    Display defects on semiconductor mask in a desktop app written in C# Windows Forms

    Reduce errors and develop stable components by abbreviating the complex and error-prone formulas of the legacy system

    Java Spring, C# Windows Forms, IBM DB2

  • Develop SK hynix WaferMap (2017.04 ~ 2017.07)

    Display defects on semiconductor wafers in a desktop app written in C# Windows Forms

    Reduce errors and develop stable components by abbreviating the complex and error-prone formulas of the legacy system

    Implement compatibility legacy systems, multiple wafer comparison, customizing

    Java Spring, C# Windows Forms, IBM DB2

  • Design WaterValve MES (2017.02 ~ 2017.03)

    Storyboard and data flow design prior to building MES for WaterValve process

    Java Spring Boot, jQuery, Angular.js, Oracle

  • Develop WaferMap SeoulSemiconductors (2017.01 ~ 2017.01)

    Display defects on semiconductor wafers in a desktop app written in C# Windows Forms

    Improve user experience

    C# Windows Forms

• Faberian :: 2015.09 ~ 2016.08

  • Develop golf putting practice equipment (2016.01 ~ 2016.08)

    When golf putting, a rolling golf ball is filmed and an algorithm that recognizes the ball is implemented in OpenCV and displayed in Unity3D.

    Derive that analysis of the ball's motion is theoretically possible and use an optimized algorithm

    Practical application failed due to physical limitations.

    C# Unity3D, OpenCV

  • Build 3D shooting studio (2015.09 ~ 2015.12)

    Establishment of a studio and infrastructure that can simultaneously film subjects with 96 digital cameras

    Write and operate a program that brings high-quality images to a single PC

    Write and operate optimization code when creating 3D modeling from high-quality images

    C# Windows Forms, Python