Dong-hyeon Shin

qu3vipon@gmail.com | qu3vipon | Seoul, Korea

Experience

Tech Lead (Part-Time Advisor)
2341 / Habit-Based Healthcare Service
  • Joined as a founding engineer and secured selection for both the Pre-Startup Support Program and Korea Youth Startup Academy in 2026
  • Led backend/mobile full-stack development with FastAPI and Flutter
  • Guided technical architecture decisions and ran a small engineering team
  • Launched and operated two apps, Celery Lunch and Keepoloy, on App Store & Google Play
2025.07 – 2026.03
Co-founder & CEO
Outliers / Early-Stage Startup (MVP Phase)
  • Planned and built five MVPs: project management tool, reputation check via career verification, product feedback collector, mentoring platform, and math education for adults
  • Launched each MVP as a beta service and ran customer feedback experiments
2024.02 – 2025.07
Backend Engineer
Toss Securities (NoOps Team) / Financial Platform
  • Added audit logging to the no-code admin platform to improve operational transparency
  • Enhanced the multi-tenant deployment process to improve K8s automation
2023.12 – 2024.02
Backend Engineer & Team Lead
Asleep / AI-Powered Sleep Analysis Healthcare Service
  • Built core features such as respiration-based AI sleep analysis and automated sleep reports
  • Designed and implemented a Stable Diffusion-based generative AI serving architecture
  • Established a MySQL CDC-driven analytics stack and data pipeline
  • Operated cloud infrastructure and optimized costs through thread-pool tuning
2022.08 – 2023.11
Backend Engineer
ABLY (Advertising Team) / Fashion Commerce Platform
  • Developed ad delivery, cost deduction, settlement, and analytics systems
  • Improved ad performance via CTR prediction and recommendation A/B tests
  • Optimized dashboards through query/index tuning and aggregate-table redesign
2022.01 – 2022.08
Backend Engineer
HangFive / Global Social Matching Platform
  • Joined as the first engineer before seed funding
  • Designed and implemented core MVP features such as friend matching, fortune reading, and community
  • Led MVP development that contributed to TIPS selection and early metrics
  • Built cross-platform in-app purchases for iOS and Android
2020.08 – 2021.12

Education

Computer Science (Senior Year)
Self-Paced Degree Program
2021.06 – Present
Economics (Withdrew in Junior Year)
Yonsei University, Sinchon Campus
2011.03 – 2018.02

Awards

AWS Startup Security Gameday Winner
1st among 14 Korean startup teams
2023.04

Certifications

CKAD: Certified Kubernetes Application Developer
Credly Certificate
2023.12 – 2026.12
AWS Certified Database – Specialty (DBS-C01)
Credly Certificate
2023.07 – 2026.07
AWS Certified Developer – Associate (DVA-C02)
Credly Certificate
2023.04 – 2026.04
AWS Certified Solutions Architect – Associate (SAA-C03)
Credly Certificate
2022.12 – 2025.12

Talks

PyCon Korea 2023 Speaker
Python DDD
2023.08
PyCon Korea 2022 Speaker
Django ORM with SQL Awareness
2022.08
PyCon Korea 2021 Speaker
Testing APIs with Practical Response Patterns
2021.10

Teaching

Oz Coding School
  • In-person courses on Python, AWS, and databases
  • Live online courses on FastAPI, Django, AWS, and AI model serving
2024.10 – Present
Inflearn
  • On-demand video courses: FastAPI, Django, Redis, and databases
2023.07 – Present
Multicampus
  • On-demand video courses: databases and SQL for practitioners
  • Delivered an in-person course on AI model serving
2025.07 – Present
Asiana IDT
  • Delivered an in-person B2B course on data analysis (Pandas, NumPy, Matplotlib, and Seaborn)
2026.07
Sparta Coding Club
  • Online tutoring on Python, Django, algorithms, and AI
2024.07 – 2025.03

Skills

Backend
  • Python (FastAPI, Django), Rust
  • Databases: MySQL, PostgreSQL
  • NoSQL: Redis, MongoDB
  • Kafka
DevOps
  • IaC: AWS CDK, Terraform
  • Cloud: AWS
  • Kubernetes
  • CI/CD: GitHub Actions, Jenkins
  • Monitoring: Datadog
Frontend
  • TypeScript (Next.js)
  • Flutter (Dart)
Languages
  • Korean (native)
  • English (advanced)