Kamil Karbownik
I am a Senior Web3 Engineer with over 7 years of experience in blockchain and decentralized application development since 2017.
About
I am a Senior Web3 Engineer with over 7 years of experience in blockchain and decentralized application development since 2017. I specialize in creating secure and scalable solutions across various FinTech verticals, including DeFi, GameFi, and DAO ecosystems. With a strong understanding of economic and financial concepts, I am driven by curiosity, purpose, and a strong sense of ownership.
I believe in challenging the status quo and thinking differently. I deeply invest myself when aligned with a team’s mission and values, building technologies that truly matter.
- 4 years' experience
- Joined August 2025
Industry experience
- Financial Services
- Gaming
- Software & Internet
Work experience
Designed and deployed robust smart contracts using Solidity, focusing on upgradeability, market resolution logic, and event oracle consumption. Engineered a modular backend with Node.js, NestJS, PostgreSQL, and Redis to enable scalable data indexing, real-time API feeds, and market resolution tracking. Implemented WebSocket-based data streams for live market updates which improved prediction accuracy and user engagement. Optimized gas usage and reduced transaction costs through smart contract auditing, benchmarking, and off-chain computation strategies.
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, supporting collaborative and quality-driven development.
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. Participated actively in code reviews, improving code quality and performance by 20%. Integrated Web3 features and wallet connections using web3.js and ethers.js.
Education
Hire Kamil Karbownik today
Post a job and invite Kamil, or contact them directly. No hidden commission.