He Went After the Factories Everyone Else Skipped
Yoochun Kim built YC Corporation for the small Korean shops that smart-factory programs forgot. No investors, no hype - just process analysis, one shop floor at a time.
Most software founders start with a demo. Yoochun Kim starts on a factory floor - the loud, oily kind, where a shop of eight people machines metal parts on a schedule they track with a clipboard. That is where he built his company, and that is the whole point.
Kim - known in Korea as Kim Yoo-cheon - runs YC Corporation, a digital transformation company he launched in Seoul on April 1, 2022. The pitch is simple to say and hard to do: bring real software to the small manufacturers that everyone talks about helping and almost nobody actually serves. In a little over two years, he grew that idea into a business doing more than 7 billion won a year, and he did it without taking a single round of outside money.
On LinkedIn he doesn't lead with a title. His name reads "Yoochun Kim, B2B DX solution." The job comes before the rank. Once you understand how he sells, that detail stops looking like a quirk and starts looking like a strategy.
01 - THE GAPThe 89 percent nobody built for
Korea loves the phrase "smart factory." For a decade the country poured money and press into automating its manufacturing base. But most of that attention landed on the plants big enough to have an IT budget and a title like "Head of Digital." The shops underneath them - the metal subcontractors, the tool makers, the injection molders with fewer than ten workers - mostly watched from the outside.
Kim built the whole company around that group. By his own count, more than 560,000 micro-manufacturers make up roughly 89 percent of Korea's manufacturing base, and the vast majority of them had never seen the benefits of digitization. That is not a niche. That is the foundation of the entire economy, running on paper.
Read that last phrase again: regardless of company size. It is easy to type and expensive to mean. Serving a ten-person shop the way you'd serve a corporation is a hard business to make profitable. Kim decided that was exactly the problem worth taking.
02 - THE METHODDiagnose first, sell second
Ask most software resellers what they do and they'll tell you which licenses they carry. Ask Kim and he'll tell you about the shop floor. YC's approach starts with walking the plant, mapping the process, and finding the actual bottleneck before anyone talks about a product. The software - CAD, CAM, an MES - comes after the diagnosis, not before it.
That order matters. A factory can tell the difference between a vendor moving units and a partner solving a problem. When the numbers land, they land hard. At Sungil, a plastics injection company, YC brought in its own YC SmartLine production system, Autodesk's Fusion 360, and a 3D printer for prototyping. The results were not subtle.
Reported outcomes for YC client Sungil, a plastics injection manufacturer.
Those aren't moonshot figures. There is no buzzword doing the heavy lifting. It is a competent MES, a good CAD tool, a printer, and someone who understood the floor well enough to put them in the right order. For a subcontractor living on thin margins, a 60 percent drop in defects is the difference between winning the next contract and losing it.
03 - THE GROWTHBootstrapped, and it shows
Here is the part that makes other founders sit up. YC Corporation has never taken outside investment. Every won of growth came from customer work - solutions sold, systems installed, support delivered. That is a constraint most startups would call a handicap. Kim turned it into a discipline.
The company passed 1 billion won within six months of opening. By August 2023 it had crossed 2.5 billion. By 2024 it was north of 7 billion, with the in-house YC SmartLine MES deployed in more than 200 client factories and a new Yeongnam branch office to reach beyond the Seoul capital region. All of it carried by roughly 20 people.
04 - THE STACKFrom CAD licenses to robots
YC started close to Kim's own expertise: CAD and CAM, with a Fusion 360 consulting offer he fronts personally. The company's own product page doesn't hide behind a brand - it reads "Fusion 360 is with YC's Kim Yoo-cheon." When you bootstrap, the founder is the product, and he knows it.
From that base the stack kept widening. Today YC supplies Autodesk software across design and manufacturing, its own MES for machinery, textile and woodworking shops, plus hardware: CNC routers, laser markers, 3D printers, automated packaging lines, proprietary IoT sensors for digital-twin work, and industrial robots programmed offline. The expansion follows a simple logic - once a factory trusts you to fix one thing, it will let you fix the next.
Fusion 360, AutoCAD, Inventor, PowerMill
200+ factory deployments
CNC, 3D printers, laser markers
Offline-programmed robots, sensors
05 - THE TIMELINETwo years, flat out
- APR 2022Founds YC Corporation in Seoul as a manufacturing digital-transformation startup.
- JUL 2022Signs an authorized domestic partnership with Autodesk to supply Fusion 360, AutoCAD, Inventor and more.
- 2022Joins Korea's Smart Factory distribution project; passes 1 billion won within six months.
- AUG 2023Revenue crosses 2.5 billion won - roughly triple the prior year.
- 2024Passes 7 billion won; YC SmartLine reaches 200+ clients; opens a Yeongnam branch.
06 - THE BETWhy the unglamorous market wins
There is a quiet contrarian streak in what Kim is doing. The whole software industry points its ambition at the enterprise, where the logos are shiny and the contracts are large. Kim pointed his at the subcontractor - the metal shop, the furniture maker, the paper mill. Unglamorous, enormous, and ignored. The best markets usually are.
He is not promising a revolution. He is promising that a shop with ten people can run modern software, cut its defects, ship on time, and win the next order. Done a few hundred times over, that is not a small thing. It is the slow, real digitization of the part of an economy that actually makes the parts.
Kim's aspiration, stated plainly, is to keep going: more shops, more of the toolbox, still self-funded, still starting on the floor. For a company that began by putting its founder's name on a landing page, the ambition is refreshingly literal. Walk in. Look at the process. Fix what's broken. Then do it again.