byteassembler
Senior Web3 Engineer
As a Senior Web3 Engineer with 8+ years of experience in blockchain and decentralized application development since 2017, I specialize in building secure and scalable solutions across FinTech verticals, including DeFi, GameFi, and DAO ecosystems. With a strong understanding of economic and financial concepts, I believe in challenging the status quo and thinking differently—driven by curiosity, purpose, belief, and a strong sense of ownership. I build technologies that matter, investing deeply when I align with a team’s mission and values.
Experience: 5 years
Yearly salary: $100,000
Hourly rate: $70
Nationality: 🇵🇱 Poland
Residency: 🇵🇱 Poland
Experience
Senior Web3 Engineer
Polymarket 2024 - 2025
Designed and deployed robust smart contracts using Solidity, with a focus on upgradeability, market resolution logic, and event oracle consumption. Engineered a modular backend with Node.js, NestJS, PostgreSQL, and Redis, enabling scalable data indexing, real-time API feeds, and market resolution tracking. Implemented WebSocket-based data streams to deliver live market updates, improving prediction accuracy and user engagement. Optimized gas usage and reduced transaction costs through smart contract auditing, benchmarking, and off-chain computation strategies.
Full Stack Engineer
Euvic 2021 - 2024
Developed full-stack Web3 applications (Dapps) integrating React.js frontends with Solidity-based smart contracts. Built RESTful and GraphQL APIs using Node.js and Express for seamless blockchain interactions. Participated in agile sprint planning and code reviews to support collaborative, quality-driven development.
Web3 Engineer
Neti 2018 - 2020
Designed and developed scalable client-side and server-side applications and APIs using TypeScript and Node.js. Contributed to full-stack development, including CI/CD pipelines and unit testing. Actively participated in code reviews, improving code quality and performance by 20%. Integrated Web3 features and wallet connections using web3.js and ethers.js.
Skills
ethereum
ethereumjs
javascript
nextjs
react
rust
solana
solidity
typescript
web3
web3js
english