Hello! I'm Hyeongchan from Korea. I enjoy programming, working out, and bouldering.
- Service many machine learning products in various domains, Audio & Speech, Vision, NLP, Recommendation Systems, Tabular, and LLM applications in many startups.
- Kaggle 2x Expert. the highest competition rank is top 0.1%.
- Here's my C.V. Feel free to contact me at the email
kozistr@gmail.com
:)
previously...
- 2023 - 2024 : Joined
Sionic.AI
. Built enterprise-grade LLM applications. - 2021 - 2023 : Joined
Viva Republica
(Toss
). Developed many products like BNPL, CSS, OCR, NPS, CDP, and in-house products. - 2020 - 2021 : Joined
Watcha
. Developed Watcha recommendation system, and contributed to other products like WatchaPedia, in-house applications. - 2019 - 2020 : Joined
Rainist
(Banksalad
). Developed a transaction classifier service to analyze the categories with low latency, high accuracy, and in real-time. - 2019 : Joined
VoyagerX
. Developed a speaker diarization product that automatically recognizes the contents of the meeting. - - 2019 : offensive security stuffs. Mainly researched and studied Linux kernel exploitation and reverse engineering.
Current Interests
- Kaggle Challenges
- Building something in Rust
- Bouldering
📊 this week i spent my time on:
I'm an Early 🐤
🌞 Morning 1467 commits ██░░░░░░░░░░░░░░░░░░░░░░░ 08.78 %
🌆 Daytime 6967 commits ██████████░░░░░░░░░░░░░░░ 41.72 %
🌃 Evening 5948 commits █████████░░░░░░░░░░░░░░░░ 35.61 %
🌙 Night 2319 commits ███░░░░░░░░░░░░░░░░░░░░░░ 13.89 %
Last Updated on 16/07/2025 15:33:04 UTC
📈 my github stats