0xJosee.
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0xJosee.

Full-stack developer specializing in Solana DeFi, blockchain engineering, and Web3 application development.

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About Me

Developer, builder, and blockchain enthusiast

UkraineFull-Stack DeveloperSolana DeFi

Hi, I'm 0xJosee — a Web3 full-stack developer with 4+ years of experience building blockchain applications and high-performance systems. I specialize in Solana, Ethereum, and cross-chain development, from trading bots with AI features to DeFi/NFT platforms and wallet extensions.

I build Web3 platform features including NFT collections, staking systems, tokenomics, and high-load bridge/swap operations across 10+ chains. I've also built a Bitcoin wallet from scratch with Taproot and Ordinals support.

I hold a Master's degree in Computer Science. I'm passionate about pushing the boundaries of decentralized technology and building products that matter.

Experience

My professional journey so far

02/2024 — Present

Web3 Full Stack Developer

Blockchain Outsource Studio

Built Web3 platform features: NFT collections, staking, tokenomics, Solana integrations. Built high-performance Solana trading bots with AI features. Developed high-load system for bridge, swap, transfer operations across 10+ chains.

SolidityRustTypeScriptNext.jsNest.jsPostgreSQLDockerKubernetes
12/2024 — Present

Web3 Software Developer

Sports & Web3 Startup

Developing Web3 sports platform with NFT rewards, tokens and leaderboard system. Integrated payment processing, Prisma, TON blockchain, Telegram bot support.

TypeScriptNext.jsPrismaTONTelegram Bot API
07/2024 — 11/2024

Web3 Frontend Developer

Web3 Development Agency

Developed responsive DeFi/NFT frontends with wallet integrations (MetaMask, Phantom) mainly for Solana blockchain.

React.jsNext.jsethers.jsweb3.js
06/2023 — 04/2024

Web3 Full Stack Engineer

Software Company

Delivered SaaS platform with blockchain integration and NFT management. Developed from scratch a Bitcoin wallet with Taproot and Ordinals support using Tapscript and bitcoinjs-lib as a browser extension.

TypeScriptReact.jsNode.jsbitcoinjs-lib
07/2021 — 02/2023

Frontend Developer

Digital Agency

Built web applications using React.js, TypeScript, Redux. Optimized performance and developed reusable component libraries.

React.jsTypeScriptRedux

Education

Academic background

Master's Degree in Computer Science

National University, Ukraine

2022 — 2024

Bachelor's Degree in Computer Science

National University, Ukraine

2018 — 2022

Skills & Expertise

Technologies and tools I work with

Blockchain & Web3
Solana95%
Ethereum / Solidity80%
Rust75%
web3.js / ethers.js90%
wagmi / viem85%
Frontend
React.js95%
Next.js95%
TypeScript95%
Tailwind CSS90%
Backend
Node.js90%
Nest.js80%
PostgreSQL85%
Prisma / Drizzle85%
DevOps & Tools
Docker80%
Kubernetes70%
CI/CD80%
Git90%