Hi, I'm Jimmy, a software engineer passionate about continuous growth and improvement in the ever-changing world of technology

I have six years of development experience and am currently working on an O2O (online-to-offline) service in the healthcare industry

Companies where passionate work was conducted
over the past six years include the following:

Goodoc / Server
2024 -
Twip / Server
2023 - 2024
Tessa / Server
2021 - 2023
Dtonic / Data
2019 - 2021

"Goodoc is a company that develops O2O (Online-to-Offline) healthcare services, such as telemedicine and tablet-based patient check-in systems."

Position:

O2O Platform Team - Server Engineer

Work Experience

  • Developed servers using NestJS with TypeScript
  • Built and maintained servers using Java and Spring framework
  • Migrated NestJS-based servers to a Spring-based architecture
  • Enhanced the hospital appointment system for Goodoc

Tech Stack

Java+Spring, NodeJS+NestJS, WebSocket, MySQL, Redis

"Twip is a company that develops a sponsorship platform enabling viewers to support Twitch streamers."

Unfortunately, Twip has ceased operations due to Twitch's withdrawal from the Korean market.

Position:

Twip Platform Team - Server Engineer

Work Experience

  • Developed API servers using NestJS and TypeScript
  • Maintained and developed new features for Twip and Together services
  • Launched a new donation feature, "King Donate," for the Twip service
  • Planned and developed services for new business ventures

Tech Stack

NodeJS+NestJS, MySQL, WebSocket, Redis

"Tessa is a company that develops a piece investment service focused on blue-chip artwork."

Position:

O2O Platform Team - Server Engineer

Work Experience

  • Developed API servers using Node.js
  • Created a back-office system to support operational tasks
  • Designed and developed solutions to handle sudden traffic spikes
  • Converted code written in CommonJS to TypeScript
  • Designed and developed the transition of a monolithic MVP service to a microservices architecture (MSA)
  • Implemented and managed enterprise-wide business intelligence (BI) using the open-source data visualization tool, Redash

Tech Stack

NodeJS+NestJS, PostgreSQL, Redis, VueJS, AWS

"Dtonic is a company that develops spatiotemporal big data solutions and provides services for building big data systems."

Position:

Bigdata System R&D Team - Engineer

Work Experience

  • Developed REST APIs using the Spring framework
  • Specialized in developing solutions for spatial-temporal big data
  • Built on-premises big data systems using the HDP platform
  • Established ETL data pipelines based on Spark/Yarn

Tech Stack

Java+Spring, Hadoop, Spark, Yarn, Nifi, Kafka

WHY NOT?

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