Stop Repeating
Outsourcing Failures
From consultation to launch and beyond — the same person you first meet sees it through to the end.
How I Work
Planning, design, and even UI/UX — all by hand, before the AI era!
Architecture design and infrastructure setup, completed on schedule.
A real developer uses a Realforce keyboard and 4 monitors.
The Person Who Builds It
Jonghak Yoon
Founder of MVPIT · 17-year full-stack engineering lead
Starting with handset development at Samsung and LG, I've built products for 17 years — growing from an embedded engineer into PO, PL, and CTO roles. 10+ years in startups, 20+ launches. I cover the full cycle — planning, design, development, QA, and operations — and for recent IoT products I built everything myself, from firmware to app, web, cloud, and AI.
- 2G/3G feature-phone development for Samsung
- Smartphone framework development for LG
- Iris-recognition device BSP development
- Numerous Android/iOS platforms & services
- IoT product CTO
- PO/PL for multilingual services for foreigners (18 countries)
Zero Communication Overhead
One person. No middlemen. Changes are applied directly.
No Handoff Risk
The person who starts your project runs it to the end. No team changes.
Proven Reliability
Built and operated a service with 200K monthly active users. Confidence that lasts beyond launch.
Everything Under One Roof
Apps, websites, servers, admin panels — all built by one person. No need for multiple vendors.
Services We Built and Operated
Smart Fermentation Device — IoT Fullstack to Production
Soldering, assembly, firmware, app, web, infra The ultimate one-person dev
Prepaid Top-up Service for Foreigners — 18 Languages
Full architecture renewal from legacy system.
Visa & Admin Services for Foreigners — 14 Languages
Led the entire process from planning to launch and operations.
Used Book Trading B2C/C2C Platform
PG integration, custom-built escrow safe trading system
Calligraphy SNS & Contest Platform
SNS, contests/voting, online exhibitions community platform
Ethereum Wallet App
Ethereum blockchain API integration wallet app
MVP Development
Turn your idea into a launch-ready product. 10+ years in startups, 20+ launches
Issue Response
From incident response to updates Maintained by the developer who built it.
Technical Advisory
Before hiring a vendor, make sure you're headed in the right direction. App·Web·IoT·AI | Planning·Design·Build·Dev·QA·Ops