Leonardo Mircovich
Backend & Blockchain Engineer
5+ years building web3 products — from trading bots and NFT collections to DeFi protocols and trading terminals. 1st place at ETHRome 2024 for a ZK-based wallet recovery solution.
/ Career
Experience and personal projects
2024 — 2026
Backend Engineer
Opsin — Remote
Built blockchain indexing pipelines consuming data from RPCs, Kafka streams, and third-party providers. Integrated external DeFi protocols and token launchers into the core platform. Developed core WebSocket logic and REST endpoints, implemented wallet management and automated on-chain operations across multiple chains. Designed and shipped Solidity contracts supporting core product flows.
2024
ETHRome 2024 — 1st Place
Hackathon
Built a ZK-based wallet recovery solution with a cross-functional hackathon team.
2023
AI Video Generation MVP
Personal Project
Next.js platform integrating Stable Diffusion for automated video generation.
2022
Unity 2D Game
Personal Project
Full gameplay development and release of an independent mobile title on the Google Play Store.
2019 — 2021
DeFi, Web3 & Trading Projects
Personal Projects
Built DeFi staking protocols and DEX aggregator contracts in Solidity. Designed and deployed multiple NFT collections with custom smart contracts and minting infrastructure. Developed automated trading and arbitrage bots on Binance APIs with custom TradingView indicators.
/ Tech Stack
Technologies and tools I work with.
Blockchain & Web3
Backend
Data & Messaging
Frontend & Mobile
DevOps & Cloud
Languages
Game Dev
/ Get in Touch
Feel free to reach out through any of these channels.