Hi, I'm Junho Yeo

Welcome to my site. I'm a 22-yo generalist hacker, shaping the 2nd/3rd web. Sometimes a designer and dreamer, I just like to build things. Now I'm preparing the infrastructure—insight, followers, and capital—for a bigger dream.

Inevitable

Co-founder and CEO

Inevitable is a crypto-native DeFi studio and validator. We partner with blockchain foundations to build DeFi products that realize their strategic narratives while securing their networks.

We had been securing Mitosis with 99.9% uptime since testnet, contributing application development, and helping several ecosystem protocols from their design to launch.

As a validator, we're fully committed to accelerating Mitosis's vision—the liquidity manifesto to democratize finance and drive unprecedented capital efficiency—while providing reliable infrastructure and staking services to our delegators and to the ecosystem.

Pagemate

Hackathon Team Leader 2025.08

Developed an AI agent SDK that guides users within websites and automates tasks (especially elderly users who encounter mental barriers and educational gaps making digital tasks nearly impossible alone). Was responsible for overall UI/UX design and frontend development. Composed business narrative/direction and presentation structure in English.

Won 1st Place in the JUNCTION ASIA 2025 Side Track (Audience Popularity Vote).


Trophy
JUNCTION ASIASide Track 1st Place

Threads API

2023.09

  • Built the world's first unofficial Threads API through reverse engineering 12 hours after launch
  • Hit 1,500+ GitHub stars before Meta asked me to stop by sending me a cease and desist letter

Aleph

Co-Founder and CTO 2023.02 - 2025

  • Company building decentralized stablecoin, raised >1M.

  • Experienced significant deficiencies with co-founder in financial management/communication issues with investors, while experiencing multiple strategic pivots, which led to wind down the company.

  • Some of the ideas we explored was:

    • Multi-currency stablecoin
      • with own monetary policy
      • backed by BTC
      • earned initial traction by accelerating the community burn of USTC (which turned out to be a mistake).
    • A blockchain eliminating state bloats by making each application runs in its own "container"
      • which is an application-specific lightweight ledger, sequencer, and execution environment
        • that only commits STARK proof of execution to the Parent Security Provider (L1)
        • and state references/UTXO history to Storage Provider (another component that's periphery to the L1).
      • users only sync data for applications they're currently using.
  • Lessons learned:

IBCX

Product Manager/Frontend Developer 2022.10 - 2023.02

The Cosmos ecosystem was founded on the belief that the future of blockchain lies in specialized chains for specific applications, and this vision has already come to fruition with the successful deployment of numerous AppChains serving millions of users.

Until now, people who believed in Cosmos bought $ATOM, but it lacked direct representation of the potential of other projects being built. That is why we created $IBCX, the Interchain Basket of Coins.

As the first fully-collateralized index token for Cosmos, $IBCX reflects the overall growth rate of the entire ecosystem, effectively making investments for Cosmonauts. Governed by the ION DAO, $IBCX is a secure and easily deployable asset comprising a basket of leading Cosmos coins weighted by market capitalization.

You can learn more about $IBCX and the ION DAO at index.ion.wtf.

Twitter

Elon hired George Hotz to fix Twitter search, and he opened a competition for open-source developers/designers to implement the new search feature without private code access. I submitted my solution and received a mention.

realGeorgeHotzGeorge Hotz 🐀@realGeorgeHotzNov 23, 2022

This is the interview.

Build this feature. You don't get source access. Link the GitHub and license it MIT.

Looking for a one liner I paste in my JavaScript console to enable good "from:"

000

Should hot modify existing Twitter search box, not looking for a demo on a different page.

Looking for more than just tokenization of the word "from", that's just a part of it. It should fix the suggestions to be your followers, etc...things you might actually type.

Build a script people will want to inject into their Twitter page because it's useful, not a demo.

Bento

Founder

I developed dashboard apps for protocols and wallets on a part-time basis, but I quickly became disappointed with their limitations.

Many services were closely tied to a specific layer-1 chain, as they were either built by the same team or funded by the same venture capital firms. This often resulted in these products struggling to expand beyond their own ecosystem and not being able to meet the needs of users who required multi-chain functionality and scalability.

In addition, many of these products were closed-source software, which centralized development and required users to rely on the team to add support for their desired protocols.

Dissatisfied with the available dashboard options, I decided to create my own open-source dashboard. I began building the app and assembled a team to work on it, named the resulting product "Bento." You can learn more about Bento and try it out for yourself at bento.finance.

Trophy
Klaymakers22The Fi+ Track 2nd Place
Trophy
Klaymakers22The Ground X Challenge Winner

ZEP Studio

Led Development for Hackathon

This is a hackathon project!

ZEP is a platform that allows creators to build interactive and productivity apps using its SDK, ZEP Script. However, creating apps with it can be challenging for those without prior development knowledge, and the testing process can be inefficient.

That's where our block coding editor comes in. ZEP Studio simplifies the process of creating ZEP Script-based apps and offers three key advantages - no code or developers required, fast testing and easy deployment, and efficient previews - making it easy for anyone to create their own virtual world.

ZEP Studio uses Google's Blockly as its back-end, while improving the user experience with a block-coding editor interface similar to Scratch. Whether you're a seasoned developer or a complete beginner, it has everything you need to create amazing apps on the ZEP platform.

Trophy
JUNCTION ASIAZEP Track 2nd Place

Manythings

Developer in Residence 2021.10 - 2023.02

Manythings is a blockchain builder group, leading and participating in numerous blockchain/crypto projects. Raised Seed Investment in Nov 22 with US $50M Valuation.

Led the team and worked on various NFT projects and frontends. Also architected a crafting solution for minting/customizing NFTs on L2(Immutable X).

Keplr

Contributed to Keplr Wallet Extension and built the first version of its web dashboard service, which has over 700K+ users.

The new update to the Keplr dashboard is looking sweet 👌 - also a lot easier to navigate and see things from a glance. @keplrwallet #Cosmos

Pylon Protocol

I contributed to the product side of various DeFi protocols, working part-time on their design and frontend development. Pylon Protocol, an protocol that powers DeFi savings and payment services on Terra using yield redirection, was among the protocols I worked on.

I built the frontend of Pylon Gateway, a project crowdfunding and token launch platform that allowed users to invest via deposits. Pylon maintained an average TVL of $330M before the UST depeg incident and was later acquired.

In addition to my work on Pylon, I have contributed to another protocol with a total trading volume of over $3B and ongoing.

Toss

Part-time Frontend Developer

As a part-time frontend developer at Toss, a fintech unicorn currently valued at over $7.4B and the largest unicorn startup in South Korea, I built the landing page for NEXT 2021, a large-scale recruitment event with gamification(achievements).

I also contributed to the frontend of Simplicity 21, an internal design conference, and maintained web products such as Toss Feed 3.0, Home, and Notice.

[2021 #토스NEXT 개발자 챌린지]
3년 차 이하 개발자라면 지금 바로 도전하세요!
#토스 개발 문화를 가장 가까이서 경험해볼 기회
▶️ 참가 신청
8월 2일(월) - 8월 11일(수)

[2021 #토스NEXT 개발자 챌린지]
3년 차 이하 개발자라면 지금 바로 도전하세요!
#토스 개발 문화를 가장 가까이서 경험해볼 기회
▶️ 참가 신청
8월 2일(월) - 8월 11일(수)
https://t.co/0Q7phV5JCG https://t.co/5bnMo9mvDD

오는 8월 말, 토스 디자인 컨퍼런스 <Simplicity 21>이 온라인으로 진행됩니다. 토스가 디자인에서 가장 중요시하는 가치를 컨퍼런스명에 담아, 총 19개의 세션을 준비했어요. 그런데 왜 토스는 디자인 컨퍼런스를 여는걸까요?
#토스 #디자인컨퍼런스 #simplicity

PocketLesson

Software Engineer 2021.02 - 2021.12

As a Founding Engineer at PocketLesson, which was later acquired by Frentrip(Frip) and eventually Smartscore Inc., I was integral to the engineering and development of our contactless golf instruction app. My work focused on both the overall mobile app and frontend service.

Made a number of open-source projects with the team, including devxoul/daumpostcode and check-mergeable.

As of May 2022, PocketLesson had over 10,250 members, 130 pro instructors, and provided over 1,100 lessons with an average satisfaction rating of 4.89/5.

Pointing

Co-Founder 2020.07 - 2021.04

Co-founded Pointing, a platform that provided advanced payment integration at convenience stores, restaurants, and other franchises.

I was responsible for BX, UI/UX design, frontend development of the app, website, and admin pages, as well as providing architectural advice. Pointing was used at over 30 affiliates.

GitHub

When I have an idea, I like to start something right away. I start writing code. Almost all of my works are on GitHub, and it got me 4,000+ stars and some grateful followers. Please check my GitHub profile and trendy-resume.vercel.app(Outdated) for a complete list of my projects.

14:59
Inevitable
Pagemate
Threads API
UL/Aleph
$IBCX
Twitter
Bento
ZEP Studio
Manythings
Keplr
Pylon Protocol
Toss
PocketLesson
3
GitHub