Владислав

VLADYSLAV SHYLIN
Blockchain / Web3 Developer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація») Ukraine, Cherkasy

[відкрити контакти](див. вище в блоці «контактна інформація») github.com/indigo04

Summary

Blockchain / Web3 Developer with commercial experience building decentralized applications,
smart contracts, blockchain indexers, and Web3 frontend integrations. Experienced with
Solidity, Foundry, Hardhat, Certora, Subsquid, The Graph, React, Next.js, Node.js, and
PostgreSQL. Built and deployed NFT marketplace and RWA tokenization platforms, including
smart contract development, on-chain data indexing, Web3 wallet integration, production
deployment, and CI/CD. Focused on secure smart contract development, efficient blockchain
data processing, gas optimization, and reliable Web3 user experiences.

Professional Experience

Blockchain Full-Stack Developer, CRABIT 11/2025 – 07/2026
Web3 NFT Marketplace Platform
•Architected and developed a decentralized NFT marketplace enabling users to mint, create,
list, and trade NFT collections.
•Authored, tested, and deployed Solidity smart contracts for ERC20, ERC721, NFT collection
generation, and marketplace functionality.
•Implemented and optimized smart contract logic with a focus on gas efficiency and secure
on-chain operations.
•Developed smart contract tests using Foundry and Hardhat.
•Applied formal verification techniques using Certora to improve smart contract security.
•Built a custom Subsquid blockchain indexer for processing marketplace events and
synchronizing on-chain data.
•Deployed the indexer to Subsquid Cloud for high-performance blockchain data querying.
•Developed a React/Next.js frontend for NFT minting, collection creation, listing, and trading.
•Integrated Web3 wallets and smart contracts using Wagmi, Ethers.js, ConnectKit, and
Walletless.
•Integrated decentralized storage functionality using Pinata.
•Configured and maintained the production application on a VPS.
•Implemented CI/CD pipelines for automated production deployments.
RWA Tokenization Platform
•Architected and developed a decentralized platform for tokenizing, fractionalizing, and
trading real-world assets.
•Authored, tested, and deployed Solidity smart contracts for asset ownership, tokenization,
and yield distribution.
•Designed blockchain-based application flows connecting smart contracts, backend services,
and frontend interfaces.
•Developed the Web3 frontend using React, Next.js, TypeScript, Wagmi, and React Query.
•Implemented blockchain wallet integration and interaction with smart contracts.
•Applied Foundry and Hardhat for smart contract development and testing.
•Configured and maintained the production web application with CI/CD deployment
workflows.

Frontend Developer Intern, DICEUS 06/2025 – 09/2025
Insurance Management Platform
•Developed frontend functionality for a production web platform using React, TypeScript,
JavaScript, HTML, SCSS, and Tailwind CSS.
•Built responsive interfaces and reusable UI components.
•Implemented complex forms and validation using React Hook Form and Zod.
•Integrated frontend applications with backend services using React Query.
•Collaborated within a cross-functional development team.

Skills

Blockchain & Smart Contracts: Solidity, ERC20, ERC721, ERC1155, Smart Contracts, Foundry,
Hardhat, Certora
Web3 Development: Wagmi, Ethers.js, ConnectKit, Walletless, Pinata, Merkle Trees, Keccak256
Backend: Node.js, Express.js, NestJS, REST API, WebSockets
Blockchain Infrastructure: Subsquid, The Graph, Blockchain Indexing, On-chain Data
Processing
Frontend: JavaScript, TypeScript, React, Next.js, Redux Toolkit, TanStack Query, React Router,
Tailwind CSS, SCSS
Databases & ORM: PostgreSQL, Prisma, Sequelize, TypeORM
Testing & Development: Foundry, Hardhat, Certora, Unit Testing, Smart Contract Testing
DevOps & Tools: Git, GitHub, CI/CD, VPS

Projects

Web3 NFT Ecosystem & Marketplace 🛒
Decentralized NFT ecosystem with custom tokens, NFT collections, marketplace
functionality, and blockchain indexing.
•Developed custom ERC20 (WIL) and ERC721 smart contracts.
•Built an NFT Factory for generating NFT collections.
•Developed marketplace functionality for NFT listing and trading.
•Built a custom Subsquid indexer to process on-chain marketplace events.
•Developed a Next.js frontend for token minting, NFT collection creation, listing, and trading.
•Integrated Web3 wallets and smart contracts into the frontend.

Education

Full-Stack Development Course, Mate Academy 06/2023 – 12/2024

Computer Science, Cherkasy National University 09/2021 – 01/2023
Incomplete

Certificates

Full-Stack Development Course Certificate, Mate Academy
Web Design Course Certificate, Cherkasy