Mingyun Chae

# Company
https://manythings.xyz/
- Manythings is a group of web3 product makers and crypto industry experts with a vision to grow the next generation worldwide.

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# Tech Stack
Language&Framework: python, django, typescript, fastify, prisma, solidity, go, terraform
Cloud Infra: AWS(EKS, RDS, route53, Elastic Cache, S3, CloudFront, ...), CloudFlare
Database: RDB(MySQL, Postgresql)
Version Control: git, GitHub
API Documentation: swagger
Error detecting: new relic
CI&CD: github action, keel
Coworking tool: slack, jira, notion, figma

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# Projects

Sportium(https://www.sportium.fan/)

• SPRT token - https://www.coingecko.com/en/coins/sportium
• Sportium is NFT marketplace for top 4 Korea sports leagues using FLOW network like NBA TOPSHOT.
• Designed whole architecture.
• Wrote the server-side code more than 90%.(https://dev.api.elvn.sportium.world/swagger/)
• Bulit Backoffice system for operation.
• Built CI/CD system. (Build a Docker image and push it to AWS ECR using github action. Pull the image using k8s keel and deploy to pods)

Yooldo(https://www.yooldo.gg/)

• Yooldo is P2E game platform.
• Designed whole architecture.
• Wrote the server-side code 100%.(https://dev.by-catze.xyz/docs)
• Built CI/CD system.

Keplr(https://wallet.keplr.app/)

• Keplr is the most famous wallet on Cosmos Eco-system
• Built server API to make light and fast web UX

# Company
Hyperconnect(https://hyperconnect.com/en/) is a global company in Match group which created the popular app Tinder.

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# Tech Stack
Language&Framework: python, Django
Cloud infra: GCP(stackdriver), AWS(EC2, ECS, RDS, route53, Elastic Cache, System Manager, ...), k8s
Database: RDB(MySQL, Postgresql)
Version Control: git, GitHub
API Documentation: swagger
Log monitoring: GCP(stackdriver), grafana
Error detecting: Sentry
CI&CD: buddy, spinnaker
ETC: docker
Coworking tool: slack, Jira, notion
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# Projects
malle(2019.07 ~ 2020.09)

• API server project that labels images, audios coming from application(Azar) and then punishes and rewards users.
• More accurate labeling of media files for use by the Machine Learning team.
• Penalties and rewards were made according to the labeling results for use by the User Health team.
• Set up and design project at the beginning.
• Designed the database and designed the work allocation queue

azar-django (2019.06 ~ 2020.09)

• Back-office project to operate and manage Azar more efficiently and reliably.
• It's a very legacy project.
• There was no documentation about policies and projects for the first time so I wrote a lot of documentation.
• Added features and did maintenance.
• Changed from AWS EC2 to ECS.
• Changed crontab running on EC2 to ECS scheduled task system using Redis.
• Test code coverage exceeds 90%.

# Company
NBT(https://nbt.com/) is a public Ad Tech Company.

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# Tech Stack
Language&Framework: Ruby, Ruby on Rails, HTML, CSS, js
Cloud infra: GCP, AWS
Database: RDB(MySQL)
Cache Store: Memcached, Redis
Version Control: git(git-flow), GitHub
Log monitoring: Elastic Search, Log stash, Kibana
Error detecting: Elastic Search&slack hook
APM: New Relic
CI&CD: jenkins
ETC: docker
Coworking tool: slack, Jira, Confluence, kanban

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# Projects

Adrun (2017.08~2018.12)

• Developed(contributed about 75% based on Github contributor) and managed B2B programmatic mobile advertisement platform. (Also known as Ad-Network)
• Developed various interesting fraud detecting features with IP, user agent, device model, device os, device languages, carrier, CTIT(click time to install time), ITET(install time to event time), geographical location. And I raised Conversion Rate and Net Margin Rate.
• The company filed a patent one of the fraud systems.
• Developed dashboard, offer wall for advertisers and publishers, and admin web.
• Analyzed data using google BigQuery and Kibana.
  - The server sustained a maximum of 25 million requests traffic a day.
• Ran more than 450 campaigns.

smallbites (2018.10~2019.05)

• Developed API server for crowdfunding and fashion E-commerce platform. (Contributed about 99.8% of backend logic - based on Github contributors)
• Designed Database Entity Relationships.
• Developed API server for admin web & brand admin web(Contributed 100% of backend logic - based on Github contributors)

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# Tech Stack
Language&Framework: java, spring-boot, spring-jpa(hibernate)
API Documentation: swagger
Cloud infra: AWS
Database: RDB(MySQL)
Version Control: git, GitHub
CI&CD: jenkins
Coworking tool: Trello, slack

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# Projects

Nemo

• Developed a content consumption platform. (We provided that through android and ios app.)
• Experienced decision everything about software development with planning new products.
• Designed database and infra system.
• Developed a REST API server.

# Tech Stack
Language&Framework: java, spring, mybatis
API Documentation: swagger
Cloud infra: AWS
Database: RDB(MySQL)
Version Control: git, GitHub
CI&CD: jenkins
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# Projects

check-up

• Developed and operated facility management solution. The main customer was facility management companies that belong to the government.
• Developed the main REST API server. (We provided a solution through web and android app.)