AboutMe

Work Experience

Software Engineer
Working in NaverPay Payments Platform Team. (Same team as before)
- The platform spun off as it had the highest level of users and merchants in Korea.
- The platform aims to expand overseas.

Software Engineer
Worked in NaverPay Payments Platform Team.
- The platform started with 3 people, and I’m starting member.
- It has grown from 40 thousand per month to 3 billion dollars and growing every year.

Software Engineer Intern
Completion of Samsung Electronics Software Membership Program.
- This program was conducted at Samsung Electronics for university students, and selected personnel must complete at least two projects per year.
- I’m one of the members with the most projects, and completed a total of 6 projects in 2 years.
- My project was selected for Best Project in Samsung Software Membership Technical Exhibition.

BE, Computer Science & Engineering
2013, 2014, 2015 Seoul Accord Outstanding Student
- The city of Seoul selected students who liked development and had achievements.
- The university recommended me. I was selected and received a scholarship, so I was able to go to CES 2015.
- I wrote “Jewels of CES 2015 seen by students” and I contributed the article to Microsoft magazine in Korea.

1. Designed & developed an Offline Payments System
- I designed an Offline Payments Data Model.
- I designed a CPM/MPM business flow and developed a core payment business logic.
- I developed a new settlement system for offline payments.
- news
2. Redesigned & maintained a Recurring Payments Platform (Subscription model)
- As a senior engineer, the first role was to evolve this platform.
- I rechecked a business logic and found a hole of business.
- I’m trying to code refactoring & redesign API.
3. Integration a Tax Payments System
- There was a tax system independent of the existing payment system, and the language was different and maintenance was difficult.
- The custom function of the tax system was outsourced and core payments function was integrated with the existing payment system.
- I designed an Integration strategy and managed this whole project.
- This proceeded without interruption, and the tax system was operating normally.
4. Designed an On-Call process
- Added logs and alarm to core business.
- Threshold adjustment to remove false alarms.
- Wrote a list of countermeasures when an alarm is received.
- Made an on-call schedule and compensation method.

1. Designed & developed a Payments API
- Simple Payments API
- Recurring Payments API
2. Designed & developed a NaverPay Developer Center
- https://developer.pay.naver.com
3. Designed & developed a NaverPay Javascript SDK
- I wrote technical experience document that Javascript SDK
- technical experience document in NaverD2
4. Designed & developed a CrossBorder Payments System with LinePay
- It is first crossborder payments system in Korea.
- Koreans can pay at Japanese stores through NaverPay.
- news
5. Designed & developed a Payments Data Pipeline using Apache Kafka
- I designed a message properties & format.
- I designed a message recovery strategy.
- I developed Data Pipeline and the data accuracy was verified.
- I prepared for the event retrograde.
6. Designed & developed a Payments Data Consistency System
- In MSA environment, when api timeout occurs, data inconsistency occurs.
- I developed an Eventual Consistency System, I solved this problem.
7. Attend as a Naver Campus Hackathon(2018 Summer, Winter) Mentor
- The role of designing hackathon assignments and find good software engineer.
- github

1. Dynamic Battery Manger
- Developed a Dynamic Battery Manager Service in Android Framework.
- Modified the CPU frequency side code in the kernel to increase battery efficiency.
- Best Project in Samsung Software Membership Technical Exhibition(S급창의과제)
- Bronze award at 2015 OSS Developer Competition
- Project Introduction Video
2. Wefie
- Developed an android application that controls 360-degree camera.
- 360-degree photos can be viewed as a general list and can be viewed in VR form using Google CardBoard.
3. Walk Match
- Developed an android application that connects to the smart gear and synchronizes the number of steps.
- Top200 in Samsung Gear App Challenge
4. SwayStudio
- Developed an android application that connects to the newly created ball-shaped instrument hardware.
- Best Project in Samsung Convergence Design Project
- Project Introduction Video
5. Samsung Project (with Samsung Software Center)
- Developed a user location recognition system.
6. Samsung Project (with Samsung Consumer Electronics)
- Developed an android application that controls home appliances.

2018.09 ~ 11 Octopus
- Bronze award at 2018 OSS Developer Competition
- github
2016.01 Dutch Pay System (prototype)
- Best Project in Naver HackDay
2013.10 ~ 11 Busking Planet
- Developed an android application that allows you to check street performance information.
- TOP18 in 2013 Super App Korea
- Project Introduction Video