Inkyu Oh
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BIO

Career

Now — Building

My own projects — sensing, learning tools and knowledge retrieval

Six of them, written up at All work. Each one started as a problem in my own life.

Engcall — Phone-based English tutoring service

Live, with paying users. Built and operated solo, remotely.

Now — Studying

Machine learning and linear algebra

SnoreLog’s classifier scored 99% on a public dataset and failed on my own recordings. I want to understand that gap at the level of the maths, not the API.

Previously

Afinit (formerly TrueBalance) — Backend & AI Developer

Sep 2022 – Feb 2026 · 3+ years

What I built there7
AI & Knowledge Systems
  • Built Cerebro AI: RAG-based knowledge management system with LLM integration
Payments & Lending
  • Designed UPI Autopay auto-retry system — 15% payment success increase
  • Built eMandate auto-debit system — registration success 80% → 92%
  • Revamped full loan journey across 7 modules
  • Built foreclosure incentive system — 18% early repayment increase
User & Authentication
  • Unified KYC authentication — 25% success rate improvement, 40% faster onboarding
  • Event-driven notification system — 99.2% delivery rate

Education

Seoul National University (SNU)

Bachelor of Musicology (Music Theory)
Minors: Computer Science, Integrated Creative Design

City University of London

Exchange Student — Music Business

Skills

LanguagesJava, Python, C
BackendSpring Boot, JPA/Hibernate
AIRAG Systems, Vector DBs, LLM Integration
DatabaseMySQL, PostgreSQL, MongoDB, Redis
MobileFlutter
FrontendReact, Next.js, Tailwind CSS
InfraDocker, AWS, Linux, Git

Award

Grand Prize — Public Art Data Hackathon, Arts Council Korea (ARKO)

Built a location-based virtual gallery using public art geospatial data

Internship

Diveroid

Jan – Sep 2021 · 9 months

SNU Graduate School of Convergence Science & Technology

Jan – Apr 2020 · Music recommendation system using ML and data analysis

London Handel Festival — Film team

Feb – May 2019 · 4 months

Activities

  • Vice President, Likelion SNU — university coding club, mentored 50+ students
  • Training Director, SNU Underwater Exploration Team (scuba diving)
  • Concert Planner, SNU College of Music PR Office (2 years)
  • Military Service, Republic of Korea Air Force — Military Police

Contact

inkyyuoh@gmail.com