As an accomplished senior blockchain developer with over 8+ years of comprehensive experience, I specialize in smart contract development and DApp architecture. My mastery of Solidity empowers me to create robust smart contracts and intricate token economies on leading platforms such as Ethereum, Solana, and others. I am deeply committed to optimizing blockchain solutions for scalability, reliability, and security, consistently ensuring meticulous attention to detail in performance enhancement. Furthermore, my proficiency extends to frontend development with React.js, enabling me to craft elegant and intuitive user interfaces through its component-based architecture and advanced state management techniques. Complemented by backend expertise in Golang, Node.js, and TypeScript, I ensure seamless integration across all layers of development, fostering cohesion and efficiency in project execution. My track record encompasses diverse projects in the NFT, DeFi, and Bitcoin realms, reflecting my dedication to remaining at the forefront of blockchain innovation. Guided by a passion for leveraging decentralized technologies to address real-world challenges, I am poised to lead cross-functional teams and drive projects from conceptualization to deployment, delivering cutting-edge solutions that redefine industry standards. Seeking a challenging blockchain and Web3 developer role to contribute expertise in driving innovation and scalability aligned with company objectives.
Experience: 8 years
Yearly salary: $72,000
Hourly rate: $40
Nationality: 🇵🇱 Poland
Residency: 🇵🇱 Poland
Experience
Senior Blockchain Developer
Clovyr 2022 - 2024
- Developed and implemented a smart contract using Solidity on Ethereum, facilitating secure and transparent financial transactions, reducing processing time by 40%, and cutting operational costs by 25%. - Led the development of the Solana program and backend for an NFT and content sales platform using Solana, Anchor, Rust, and PHP. - Distributed 1 billion tokens to Mainnet by developing the Solana program, and utilized Jupiter API for efficient token swaps and liquidity management on Solana. - Contributed to the development of a consensus mechanism upgrade on the Solana blockchain, improving network efficiency and reducing average block confirmation time by 50%. - Implemented frontend components with React.js and integrated Solana wallet functionality using Solana Web3.js, providing a seamless user experience. - Designed and optimized a decentralized application (DApp) architecture with React.js and Node.js, leading to a 30% increase in overall system performance and scalability, accommodating over 1000 concurrent users. - Collaborated with cross-functional teams to integrate blockchain technology, utilizing Golang for backend services and PostgreSQL for data storage, streamlining data sharing and enhancing interoperability, resulting in a 20% productivity improvement. - Developed a secure multi-signature wallet feature with React.js and TypeScript, providing enhanced control and protection over digital assets, resulting in a 95% decrease in reported security incidents. - Collaborated with the business development team to integrate a non-fungible token (NFT) marketplace using Next.js and TailwindCSS, leading to a 32% increase in daily active users and significant revenue growth. - Implemented a modular and scalable CSS architecture using BEM (Block Element Modifier) methodology, reducing CSS file size by 40% and making maintenance easier for future developers. - Demonstrated strong problem-solving skills using Angular and gRPC microservices architecture, quickly identifying and resolving critical production issues, reducing downtime by 30%, and improving application stability. - Participated in brainstorming sessions and provided innovative solutions to technical challenges using Bitcoin and responsive web design techniques, leading to the adoption of new technologies and improved development workflows. - Designed a user-friendly interface with React.js, integrating Ton Connect for streamlined wallet connections and a smooth user experience. - Developed decentralized applications (DApps) on TON, optimizing contract efficiency with FunC.
Senior Blockchain Developer
Barrana 2020 - 2022
- Developed a Cross-chain dApp for asset transfer and interaction across Ethereum, Solana, Arbitrum, Avalanche, and Binance Smart Chain. - Led the design and development of scalable smart contracts on the Solana using Rust and the Anchor framework, optimizing for performance and security. - Collaborated with cross-functional teams to integrate blockchain technology into existing financial systems, which streamlined payment processes and reduced transaction times by over 60%. - Authored a series of blockchain development best practices that were adopted company-wide, leading to a consistent 15% improvement in development efficiency and a 20% reduction in post-deployment bugs. - Implemented smart contract audit processes utilizing Hardhat and Remix, improving code quality and security, leading to a 50% decrease in vulnerabilities detected and a 100% success rate in passing third-party security audits. - Assisted in the migration of legacy code to newer frameworks, enhancing maintainability and codebase stability while minimizing technical debt. - Developed a cutting-edge React-web3 SDK to enable seamless utilization of RUNE on the blockchain; facilitated 20% faster transaction times and increased user engagement by 40% within the crypto community. - Proficient in utilizing Hasura to streamline GraphQL API development and enhance the performance of web applications.
Full Stack / Blockchain Developer
Swif 2017 - 2020
- Orchestrated the design and deployment of scalable microservices architecture using Golang, significantly enhancing system robustness and maintainability for our enterprise-grade software solutions. - Led the development of responsive, user-centric web interfaces utilizing Node.js, React.js, and TailwindCSS, achieving a marked increase in user satisfaction and engagement metrics. - Oversaw the integration of the MERN Stack in the creation of high-performance web applications, resulting in streamlined development workflows and optimized operational efficiency. - Implemented a modular and scalable CSS architecture using BEM (Block Element Modifier) methodology, reducing CSS file size by 40% and making maintenance easier for future developers. - Directed the implementation of sophisticated UI components with Shdcn-UI and Material-UI, ensuring compliance with the latest UX design principles and accessibility guidelines. - Contributed to the development of a mobile-responsive design, increasing mobile users' conversion rate by 16%. - Formulated and executed advanced SEO strategies, coupled with the optimization of RESTful APIs, to elevate organic search visibility and enhance client-server communication. - Pioneered the incorporation of interactive 3D web experiences via Three.js, providing clients with innovative visualization tools that set industry benchmarks. - Led blockchain innovation initiatives, including smart contract development in Solidity and wallet integration using Web3.js, driving the company's emergence as a leader in financial technology solutions. - Championed internationalization projects, delivering localization support and multi-language capabilities that broadened the company's international market presence. - Maintained exemplary code quality and team collaboration by implementing rigorous version control protocols with GitHub and GitLab, significantly reducing integration issues and facilitating smoother release cycles.
Skills
angular
backend
blockchain
blockchain-engineer
bootstrap
casino
ci-cd
cosmos
dapp
devops
docker
gcp
git
golang
hardhat
javascript
jquery
laravel
nextjs
node
nosql
php
python
react
redis
rust
solana
sql
tailwind
ton-developer
typescript
web3
web3-py
web3js
solidity