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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.…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.

Kamil Karbownik

Developer, Programmer, Blockchain Developer, +2

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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.…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.

Available to hire

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.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Intermediate

Work Experience

Senior Web3 Engineer at Polymarket

June 1, 2025 - August 19, 2025

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.

Full Stack Engineer at Euvic

February 1, 2024 - August 19, 2025

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.

Web3 Engineer at Neti

November 1, 2020 - August 19, 2025

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.