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Work History

Jan 2017Current

Software Engineer

ADVR(https://advr.io)

Tech Stack: AWS Lambda, AWS Kinesis(Similar to Kafka), MySQL, Redis, Python, Flatbuffers, Pyramid,  React, Redux, Three.js, Unity3D.

  • Building REST API end-points for the content delivery system, analytics, and tracking
  • Building SPAs for CMS using React, Redux, Three.js, C3.js
  • Building a VR content build system.
Feb 2016Jan 2017

Software Engineer

Goodshop(https://goodsearch.com)

Tech stack: Rails, Nginx, Redis, PostgreSQL, Sidekiq(job queue for asynchronous tasks)

  • Built a large scale email subscription system(multi-threading)
  • TDD(test code coverage was about 95%)
  • SQL query optimization
  • https://www.visualcv.com/younghoon-choi Built a location-based web app
  • Designed and implemented common modules as well as interfaces for integration with API end-points from more than 5 different third-parties
Nov 2013Mar 2015

Software Engineer

KAKAO Corporation(https://www.kakao.com/talk )

Kakaotalk is the most popular mobile messenger in South Korea. Kakaotalk currently has over 170 million users. My team focused on the gift shop in Kakaotalk messenger.

Tech Stack: Elastic Search,  Redis, Memcached, MySQL, Java, Rails, Ruby, Play Framework AngularJS. Grunt,  Logstash,  Kibana.

  • Built scalable web applications(8000 requests for second) with high availability
  • Implemented an SPA for shopping and API end-points for it
  • Built an error monitoring system with ELK stack
  • Wrote deployment script front-end stack(Grunt + AngularJS)
  • SQL query optimization
Jun 2012Jun 2013

Software Engineer

Goodoc(Acquired by Yello Mobile) https://goodoc.co.kr

Tech Stack: Ruby, Rails, MySQL

  • Built REST API end-points for Android/iPhone app
  • Designed entire database schema
  • Implemented a location-based search engine, crawler, notification, CMS

Education

20052013

BACHELORS

Myeong-ji University

BS in Computer Engineering.

From 2008 to 2010, I took time off from school to finish South Korea's mandatory military service.