Hi, I'm Dmitrii Smirnov
Backend Engineer & Smart Contract Developer
Specializing in Node.js backend development, DeFi protocols, and smart contracts. 8+ years of experience building scalable applications, cross-chain protocols, and automation tools that serve thousands of users worldwide.
About Me
Backend Engineer & Smart Contract Developer
I'm a passionate Backend Engineer and Smart Contract Developer with 8+ years of experience building scalable web applications and DeFi protocols. My expertise spans from traditional backend development with Node.js and TypeScript to cutting-edge blockchain technologies including Solidity and cross-chain protocols.
I specialize in creating robust backend systems, REST APIs, smart contracts, and DeFi applications. I have extensive experience with AWS, PostgreSQL, and modern JavaScript frameworks. I'm also passionate about automation, having built comprehensive testing frameworks and CI/CD pipelines.
Skills & Technologies
Tools and technologies I work with
Backend & APIs
Blockchain & DeFi
Databases & Cloud
Frontend & Tools
Expertise Level
My proficiency in key technologies
Experience
My professional journey
Backend Engineer
Fundraise Up (USA)
Developing and maintaining integrations with third-party CRM systems for a leading fundraising platform serving nonprofits worldwide.
CTO / Senior Software Engineer
InterSwap (DeFi Startup)
Led technical development as CTO from inception. Designed and developed core smart contracts for cross-chain AMM protocol with LayerZero and Axelar messaging. Built backend API, managed team of 3 developers + 1 QA, and set up AWS infrastructure with CI/CD.
Backend Engineer
Skillbox (English Learning Platform)
Developed new features and maintained English learning platform eng.skillbox.ru. Implemented SQL triggers for event sourcing that reduced DB load by 30%. Integrated payment services including Sber, Tinkoff, and Yandex Split.
Software Engineer / CEO
Spreadsheet Fund
Built from scratch a Google Sheets addon for hedge fund automation with 1600+ users and 10+ public funds. Developed API adapters for 15+ crypto exchanges, payment processing via Coinbase Commerce, and comprehensive fund management tools.
Senior Backend & Solidity Engineer
Vaulty.fi (DeFi Yield Optimizer)
Developed smart contracts for DeFi yield strategies on Venus, Alpaca, and Belt.fi protocols. Built serverless backend with AWS Lambda and DynamoDB. Created token sale, vesting, and governance contracts, plus TheGraph subgraphs.
Senior QA Automation Engineer
EPAM Systems
Developed and maintained automation testing framework using WebdriverIO and TypeScript. Created PostgreSQL integration module and medical data parsing tools. Contributed to framework architecture and test development.
Ethereum Smart Contract Developer
AltTokenFund / CrescoFinance
Developed backend and smart contracts for hedge fund automation with ERC20 tokens. Created Google Sheets integration, Telegram bot for transaction signing, and technical whitepaper. Deployed system to 2 additional public funds.