Roman V.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

Hello, my name is Roman. I am a cryptocurrency developer with 6 years of experience. I've worked extensively with Solidity (across all its versions, and I'm proficient with Ethereum assembly and low-level call operations), Node.js, MongoDB, PostgreSQL, and Go (specifically forking and customizing the consensus engine). My skills extend to GraphQL, React, and I'm well-versed with libraries like ethers.js, web3, tailwindcss, and the uniswap-sdk (relevant to both uni v2 and uni v3). I've developed various DeFi projects, including farming platforms, decentralized exchanges (DEXs), NFT initiatives, tokens with burning mechanisms, and other sophisticated structures that can be crafted with Solidity. Additionally, I have experience working with the Telegram API, specifically with the bot functionalities. I can also develop Electron applications tailored for various platforms.