Artem Gomoniuk
Blockchain & Backend Engineer
Experience
Full-Stack Blockchain Engineer
Full-Stack Blockchain Engineer
Developed Solidity smart contracts including ERC-20, ERC-721, ERC-1155, staking and DeFi protocols. Built and integrated Web 3 applications using React, Prot3, Node. js, ethers. js, wagmi and web3. js. Integrated Meta Mask, Wallet Connect and blockchain RPC services. Implemented blockchain event listeners, indexing services and on-chain/off-chain synchronization. Wrote unit and integration tests using Foundry and Hardhat.
Performed smart contract security reviews and gas optimization. Deployed and maintained contracts across EVM-compatible networks. Designed REST APIs and backend services supporting blockchain applications. Built DeFi analytics and wallet intelligence platforms using Etherscan and Coin Gecko integrations.
Backend Engineer
Backend Engineer (Crypto Infrastructure)
Built real-time market data infrastructure aggregating data from 12 cryptocurrency exchanges and processing 2,000+ assets. Developed low-latency Web Socket services and REST APIs for real-time market data delivery. Designed scalable event-driven architectures for high-throughput environments.
Implemented caching, fault tolerance and resilience mechanisms. Optimized backend performance, database queries and infrastructure reliability. Developed data processing pipelines for cryptocurrency analytics and monitoring systems.
Software Developer
Software Developer (Freelance)
Developed blockchain applications, backend services, and custom Web 3 integrations. Built transaction processing systems and blockchain event indexers. Implemented wallet integrations and smart contract interactions. Designed and deployed backend infrastructure using Docker and Linux environments. Collaborated with clients on architecture design, deployment and maintenance.
Education
ITMO University
Bachelor of Science
Saint Petersburg, Russia
Skills
SolidityEthereum / EVMERC-20StackingSmart Contract SecurityFoundryHardhatethers.jswagmiJavaC++GoNode.jsPythonFastAPIREST APIsWeb SocketsEvent-Driven SystemsSQLPostgreMongoDBRedisGitDocker
PROJECTS
Real-Time Crypto Market Data Platform
Aggregated market data from 12 cryptocurrency exchanges. Processed 2,000+ assets using Web Sockets and REST APIs. Built scalable backend services and event-driven processing pipelines.
Crypto Analytics Dashboard
Built a cryptocurrency analytics platform with wallet intelligence and portfolio tracking. Integrated Etherscan and Coin Gecko APIs for blockchain and market data. Developed transaction analysis, token valuation, and portfolio monitoring features. Implemented responsive React frontend and high-performance FastAPI backend. Added caching, retry mechanisms and performance optimization.
Blockchain Transaction Indexer
Built a production-grade Ethereum indexer using FastAPI, PostgreSQL, Redis, Web Sockets. Implemented blockchain event ingestion and transaction processing pipelines. Developed REST and Web Socket APIs for real-time blockchain analytics. Added token transfer tracking, address analytics, and transaction monitoring. Implemented Docker-based deployment, CI/CD workflows and automated testing.
SKILLS
Blockchain
Solidity, Ethereum / EVM, ERC-20, ERC-721, ERC-1155, De Fi, Stacking, Smart Contract Security, Gas Optimization, Foundry, Hardhat, ethers.js, Meta Mask, wagmi, Wallet Connect
Backend
Java, Spring Boot, C++, Go, Node.js, Prot4, Prot2, Python, FastAPI, REST APIs, Web Sockets, Event-Driven Systems
Databases
PostgreSQL, MongoDB, Redis
Dev Tools
Git, Docker, Linux, Nginx, CI/CD
Languages
Native language
English (C 1), Russian (Native)