4khelios

Blockchain Engineer

As an accomplished senior blockchain developer with over nine 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 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.


Experience: 6 years

Yearly salary: $50,000

Hourly rate: $40

Nationality: 🇬🇧 United Kingdom

Residency: 🇬🇧 United Kingdom


Experience

Senior Blockchain Developer
Exyte
2021 - 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%. Designed and optimized a decentralized application (DApp) architecture with React.js and Node.js, leading to a 30% increase in 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. Contributed to the development of a consensus mechanism upgrade on the Solana blockchain, improving network efficiency and reducing average block confirmation time by 50%. Led the design and development of a decentralized finance (DeFi) smart contract using Solidity, resulting in a 40% increase in user adoption within the first quarter.
Blockchain Developer
Barrana
2019 - 2021
Architected and deployed a decentralized finance (DeFi) application using Solidity and Ethereum, securing $1M in assets under management within the first three months post-launch, showcasing advanced smart contract development and deployment skills. Led a team of developers in migrating a traditional loyalty points system to a blockchain platform using the MERN Stack (MongoDB, Express.js, React.js, Node.js) and Solidity, doubling redemption rates and increasing partner participation by 30%. Optimized blockchain transaction throughput by 40% through meticulous network and protocol enhancements on Ethereum, significantly reducing gas fees and improving user transaction experience.
Blockchain Developer
FreeBlock
2017 - 2019
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 JavaScript (Node.js, React.js), and TailwindCSS, achieving a marked increase in user satisfaction and engagement metrics.

Skills

bitcoin
blockchain
cosmos
decentralize
defi
ethereumjs
evm
firebase
golang
hyperledger-fabric
mern
nextjs
nft
node
polkadot
react
remix
rust
smart-contract
solana
truffle
web3-py
web3js
solidity
english
chinese-mandarin
dutch