Egor

Egor Kravchenko
Software Engineer
Phone [відкрити контакти](див. вище в блоці «контактна інформація»)
E-mail [відкрити контакти](див. вище в блоці «контактна інформація»)
GitHub github.com/kravchenkoegorii
LinkedIn [відкрити контакти](див. вище в блоці «контактна інформація»)
Date of Birth 2-September-2003
Nationality Ukrainian
Location Dnipro, Ukraine

Skills
Technical: JavaScript, TypeScript, Node.js, Express.js, Nest.js, React.js, various ORMs, SQL,
C#, ASP.NET Core, EF Core, Dapper, XUnit;
Architecture: Backend architecture design, Microservices, Database schema design, Design pat-
terns (e.g., CQRS, Repository, Factory);
Databases: MSSQL, MySQL, PostgreSQL, Redis, MongoDB;
Messaging: Kafka, RabbitMQ;
Web3: Solidity, Ethers.js, Viem, Smart-contracts Integration & Debugging, EVM-
compatible chains, DeFi;
DevOps: Docker, GitHub Actions (CI/CD), Azure, AWS (S3, Elastic Beanstalk);
Languages: English (B2), Ukrainian (Native)

Work Experience
• Backend Developer
Cowchain
Nov 2024 – Aug 2025 (10 months)
– Designed backend architecture and database schemas for Web3 platforms from scratch
– Built event-driven microservices using message queues for high scalability and decoupling
– Integrated LLM models into Web3 applications
– Integrated EVM-compatible, Solana, and Bitcoin chains
– Onboarded Aerodrome and Velodrome protocols
– Architected and deployed NFT platforms with minting and reward mechanisms
– Debugged Solidity smart contracts to resolve critical issues
– Built and maintained subgraphs for on-chain data indexing
– Conducted code reviews, provided task estimations, and actively contributed to sprint
planning and team discussions
• Full-Stack Developer (.NET, TypeScript)
Peanut Trade
Dec 2023 – Nov 2024 (1 year)
– Architected multi-chain support for TON, Tron, and EVM-compatible networks, enabling
seamless cross-chain transactions
– Integrated and onboarded new CEX platforms, broadening trading capabilities across
multiple exchanges
– Refactored and optimized backend services to boost throughput and scalability under high
load
– Designed and implemented RESTful and WebSocket APIs for real-time Web3 data
streaming and interaction
– Performed deep debugging and resolved critical service issues, significantly improving
system reliability
• Full-Stack TypeScript Developer
DiExp-Tech
Jan 2023 – Nov 2023 (11 months)
– Implemented Google Pay, Apple Pay, Bit and Stripe payment integrations
– Improved performance of the existing codebase
– Built file upload and delete services using Amazon S3
– Deployed Node.js applications to AWS Elastic Beanstalk
– Developed backend services for managing restaurants, offers, and chats
– Configured GitHub Actions workflows for build, test and deployment
– Fixed UI bugs, added internationalization, and created an admin panel
– Conducted code reviews of pull requests from colleagues
– Designed database schemas and overall system architecture
• Junior .NET Developer
FlexoForge
Aug 2022 – Jan 2023 (6 months)
– Designed and implemented JWT authentication with refresh-token support
– Developed order-creation and payment microservices in .NET
– Built a photo-upload service integrated with Azure Blob Storage
– Optimized SQL stored procedures to boost database performance
– Refactored legacy code for improved readability and performance
– Wrote unit and integration tests using XUnit and FluentAssertions
– Performed manual API testing and documentation with Postman
– Fixed UI bugs and implemented theming in React applications
– Integrated Stripe to enable a simple donation payment flow
Education
University Degree Location and Period of Study
Oles Honchar Dnipro National B.S. in Software Engineering, Dnipro, Ukraine
University Graduated Jun 2025

Projects
• GPT Chat
Real-time AI chat with voice input using OpenAI models.
– Sent and received messages via gpt-3.5-turbo in real time
– Transcribed voice to text with whisper-1
– Automated CI pipeline for build and tests
Technologies: TypeScript, Nest.js, React, Socket.IO, TypeORM, PostgreSQL, OpenAI API
Source code: github.com/kravchenkoegorii/GPTProject
• Caregivers Firebase
Service for care requests with Google Maps and Firebase integration.
– Created and displayed elderly help requests on a map
– Implemented address autocomplete via Google Maps API
– Applied and tested Firestore security rules
– Set up CI/CD: build, deploy to Heroku
Technologies: TypeScript, React, Google Maps API, Firebase (Firestore, Authentication)
Source code: github.com/kravchenkoegorii/CaregiversFirebase