Roman – Rust, Blockchain, Ethers.js

The open-source data platform focused on making data verifiable, shareable, and reproducible.

• Worked with different data query engines(Datafusion, Arrow, etc).
• Implemented high-performance features with data env web3 optimizations.
• Took part in a major core refactoring.
• Worked on optimizing the core, most sensitive modules.

The Web3 ecosystem for supporting crypto payments in existing payment systems.

• Developed high-load systems to manage a huge amount of transaction requests(using Node.js and Rust).
• Created architecture from scratch for managing blockchain ecosystems.
• Wrote high-quality and scalable code.
• Set up different types of databases to handle 100s millions of data rows.
• Integrated cryptocurrency networks(Bitcoin, Ethereum, Tron, Litecoin) into the existing payment system.
• Developed a system to manage a high amount of cryptowallets(by using HD wallet technology) to make it possible for batch withdrawals, transfers, exchanges, etc.
• Developed DeFi protocol in Solidity (high performance and low latency).

The migration of the existing stable coin.

• Developed core smart contracts using Rust.
• Debugged, improved, and stabilized the existing smart contract.
• Covered new and old smart contracts with tests (using mainly JavaScript and Rust).

The advanced platform revolutionizing post-trade execution workflows that is transforming how the world moves agricultural commodities.

• Developed API services on JavaScript (Node.js).
• Designed high-load services with Kafka/Cassandra technologies.
• Improved database solutions by optimizing queries and introducing sharding/replication, etc.
• Worked with DEX in the Ethereum network (analyzed and stored data for different protocols).

The decentralized application for Web3 technologies.

• Designed, developed, and tested Blockchain technologies using JavaScript (Node.js, Vue.js, Angular 2).
• Contributed to the architecture, design,n and implementation of a blockchain environment, including the consensus layer, distributed ledger, and smart contracts layer.
• Created an interface with client-side applications using web3.js.
• Worked with decentralized storage protocols such as IPFS, Swarm, and StorJ.
• Led the development of smart contracts and the performance of blockchain integration with existing applications.
• Established and maintained the environments in which blockchain solutions can be implemented, including development, testing, and production environments.
• Maintained a continuous integration pipeline for the development and testing of applications.
• Took existing prototypes to production-quality code to create new products and offerings.
• Assisted with debugging and verification of defects.
• Supported the requirements of the service area.
• Participated in technical reviews as part of the development process.
• Was responsible for architecting, setting up, managing, and evangelizing the tools and processes.