Haeil Yi Email & Phone Number

Seoul, Kr

Seoul, Korea

CoBALT is my second start-up. The second time is as hard as the first time. I'm all about communication sharing knowledge and thoughts. In the near future, people will be able to deliver 100% of their intention with an innovative method better than words. I believe that lossless communication increases trust between people. So, CoBALT is committed to building a world where people are connected by trust through lossless communication.CoBATL has two services that make communication… Show more CoBALT is my second start-up. The second time is as hard as the first time. I'm all about communication sharing knowledge and thoughts. In the near future, people will be able to deliver 100% of their intention with an innovative method better than words. I believe that lossless communication increases trust between people. So, CoBALT is committed to building a world where people are connected by trust through lossless communication.CoBATL has two services that make communication better.💸REALIZER.AI: A sales platform for B2B SaaS salespeople. We help them accelerate deal closing by creating and sharing an online sales proposal, analyzing customer engagements, signing a contract, and processing payment on the proposal. We help sellers and buyers remove the gap between talking and doing. Visit HTTPS://REALIZER.AI🤔PRESENT: A document communication platform for knowledge workers. They share documents with their voices, drawings, and face videos. Visit HTTPS://PRESENT.DO Show less

Seoul, Korea

After exiting my first start-up, Dunamu, I wanted to experience combining hardware and software. I joined Jininsa Company, a start-up that had an ambition to make robots for kids as CTO. The first step was an AI speaker for kids. Its name was Pororot, looked like Pororo, the favorite cartoon character of Korean kids. Recognizing kids' voices and carrying on conversations with them is entirely different work than for adults because kids' pronunciation is unclear. I designed the Pororot to ask… Show more After exiting my first start-up, Dunamu, I wanted to experience combining hardware and software. I joined Jininsa Company, a start-up that had an ambition to make robots for kids as CTO. The first step was an AI speaker for kids. Its name was Pororot, looked like Pororo, the favorite cartoon character of Korean kids. Recognizing kids' voices and carrying on conversations with them is entirely different work than for adults because kids' pronunciation is unclear. I designed the Pororot to ask questions first and to lead conversations to pre-defined ends. I developed an Android app to control Pororot, a serverside application to store and analyze conversations. I flew to Shenzen, China, to debug the firmware and inspect the molds. We sold 5,000 Porort. Show less

I founded my first startup, Dunamu, in 2022 with other 2 founders. Our first business was an e-book store. We thought that ebooks were going to take off because the tablet was just coming out and being popular. We sold standalone e-books at the Apple Appstore and hit the 1st rank, but the revenue was tiny. We tried to make an e-book store with PDFs of existing books but failed to join publishers. Crucially, we mistakenly selected PDF rather than e-Pub, an emerging standard, so the market… Show more I founded my first startup, Dunamu, in 2022 with other 2 founders. Our first business was an e-book store. We thought that ebooks were going to take off because the tablet was just coming out and being popular. We sold standalone e-books at the Apple Appstore and hit the 1st rank, but the revenue was tiny. We tried to make an e-book store with PDFs of existing books but failed to join publishers. Crucially, we mistakenly selected PDF rather than e-Pub, an emerging standard, so the market rejected us. We tried other services like news, ads, real estate, etc. All failed. Finally, we took on the challenge of a stock trading service where we had a specialty and succeeded. Dunamu is running Upbit, a cryptocurrency exchange in South Korea. Show less

Seoul, South Korea

Though my career as a software architect was at the summit, and made enough money, I always had to sell myself, and I hated having my talents and time determine my limits. I wanted to have a business system that worked for me even when I was sleeping. I developed a system trading system for KOSPI and KODAQ and tested all of the known techniques with historical data. If I found a secret recipe to beat the market, I would not enter into the start-up field.

Seoul, South Korea

For a long time, I was self-employed. I worked for a company built by my College of Natural Sciences alumni. I worked as a software architect and software development process engineer on enterprise system development projects in various industries. I could get experience in the retail, manufacturing, and telecom industry. In addition, as a head of a consulting team, I led 20 members.

Seoul, South Korea

My 30s passed with enterprise system development projects in the finance industry. Started from a coder, I became a software architect and engineer. My specialty was J2EE. I had read almost all of the J2EE specification documents. One of my best works is the Global Banking System of Shinhan Bank. I designed the whole banking system - online transactions, batch, MIS reporting, internet banking, ATM, and foreign currency exchange systems - with J2EE. The system was needed to work in over than 30… Show more My 30s passed with enterprise system development projects in the finance industry. Started from a coder, I became a software architect and engineer. My specialty was J2EE. I had read almost all of the J2EE specification documents. One of my best works is the Global Banking System of Shinhan Bank. I designed the whole banking system - online transactions, batch, MIS reporting, internet banking, ATM, and foreign currency exchange systems - with J2EE. The system was needed to work in over than 30 countries whose laws, regulations, and business rules were different. The most crucial requirement was with only one code base my client wanted to cover the whole countries. I made it. I also worked for securities and insurance.I translated Effective Java 1st edition into Korean, which was a must-read book for Jave developers in Korean, and Joel On Software, 2nd edition. Show less

Seoul, South Korea

One day, my mother took me to Sewoon Arcade, a cluster of dingy electronics shops, and bought me a computer called ANT II, an APPLE II clone.The ANT II opened up a new world for me. I was hooked on Lode Runner, Captain Goodnight, etc, but there were very few game titles in Korea. I decided to make my own video games with APPLE BASIC and 6502 ASSEMBLY. It was 1979, and I was 9 years old. At that time, there was only one APPLESOFT BASIC book and only one 6502 Assembly book in Korean. Reading… Show more One day, my mother took me to Sewoon Arcade, a cluster of dingy electronics shops, and bought me a computer called ANT II, an APPLE II clone.The ANT II opened up a new world for me. I was hooked on Lode Runner, Captain Goodnight, etc, but there were very few game titles in Korea. I decided to make my own video games with APPLE BASIC and 6502 ASSEMBLY. It was 1979, and I was 9 years old. At that time, there was only one APPLESOFT BASIC book and only one 6502 Assembly book in Korean. Reading programming books and writing codes was challenging for a little non-English-speaking kid, but it did not dampen my desire to enjoy more games. I learned programming quickly by reading those books and writing game codes. I still remember HGR2.The first game I made was a memory card game. A submarine shooting game, a maze escape game, a map-editing stage game - I made a lot of games. My last game was a multi-genre game combining adventure and action inspired by 'Where in the World is Carmen Sandiego?'. I believed it would become a masterpiece. I drew more than 100 scenes and 10 characters and wrote huge codes with ASSEMBY and BASIC.After 1 year of development, I decided to sell the game. There was only one person to buy my masterpiece - the owner of the electronics shop in Sewoon Arcade. I showed my game with confidence on his color monitor. What the Color Monitor! It was something like a dragon. The way that APPLE II represents color is unique, and I had to check the game on a color monitor, but every single monitor around me was green monochrome. When I saw my game on a color monitor for the first time, all the scenes I drew were totally unrecognizable. It was impossible for kids to buy a color monitor and fix the color error. I gave up, and then I focused on my studies to go to college like any other Korean student. Show less

Bachelor Of Science (Bs), Chemistry

I have always had a curiosity about atoms as much as bits. The world consists of materials, and materials consist of molecules. Chemistry.

Master Of Science (Ms), Organic Chemistry

I was fascinated by organic chemistry after I appreciated Woodward's total synthesis of vitamin B12, the most complex vitamin.