Jeongmin Cha
Software Engineer at 두나무
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolJeongmin Cha is a software engineer with 11 years of experience building resilient back-end systems for consumer and enterprise platforms, currently shaping Dunamu’s operating platform and admin services. He has a strong track record at Yanolja improving API latency by 77%, maintaining 100% test coverage across ~1,200 tests, and applying CQRS and automated alerting to meet strict SLAs. His background spans microservices, Open Banking APIs, chatbot tooling, and trading automation—demonstrating fluency in TypeScript/Nest.js, Ruby on Rails, Python, PostgreSQL/MySQL, Redis, and containerized deployments. He pairs research-driven thinking from an MS in Computer Science with practical engineering discipline, instituting CI/CD and test-first practices across teams. Notably, he’s delivered measurable product impact (higher page inflow, lower latency) rather than only infrastructure improvements, showing an ability to align technical work with business metrics. Based in Seoul, he balances deep backend specialization with cross-functional product execution and a history of building developer-facing tools.
11 years of coding experience
4 years of employment as a software developer
Bachelor of Engineering (B.E.), Computer Science and Engineering, Total: 4.08/4.50 Major: 4.18/4.50, Bachelor of Engineering (B.E.), Computer Science and Engineering, Total: 4.08/4.50 Major: 4.18/4.50 at Hanyang UniversityBusan Science High SchoolMaster's degree, Computer Science, 3.80 / 4.30, Master's degree, Computer Science, 3.80 / 4.30 at Korea Advanced Institute of Science and Technology
English
Stackoverflow
818reputation
142kreached
7answers
17questions
Github Skills (102)
exchange10
react-native-modal10
supertest9
crypto9
api9
trading9
dialog9
trading-bot9
cryptocurrency9
gekko9
ethereum9
bitcoin9
cryptocurrencies8
javascript8
superagent8
Programming languages (9)
Github contributions (5)
jeongmincha/dotfiles
Jun 2016 - Feb 2020
Contributions:32 pushes, 1 branch in 3 years 8 months
jeongmincha/solving-algorithm
May 2019 - Aug 2022
Contributions:178 commits, 28 PRs, 179 pushes in 3 years 3 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.