Hi, I'm th3nolo

Backend and blockchain engineer

Website • LinkedIn • Upwork

Summary

I build production-grade backend services and smart contract systems for crypto and web products. I focus on security, reliability, and a clean developer experience.

What I do

• Design and ship smart contract systems (Solidity, OpenZeppelin).
• Build scalable REST APIs and background workers (Node.js, TypeScript, NestJS).
• Implement on-chain integrations (Ethers.js, Web3.js).
• Automate monitoring and operational workflows for contract systems.
• Deliver tested releases using modern tooling (Hardhat, Foundry).

Impact

• Reduced serverless API latency by 70% and lowered infrastructure overhead by 50% through performance tuning and architecture updates.
• Sustained 99.5% uptime by improving integrations, observability, and failure handling.
• Increased automated test coverage to 95% and reduced production deployment failures by 40% by strengthening CI/CD workflows.
• Reduced post-release critical bugs by 15% by tightening release processes and monitoring.
• Delivered 50+ onboarding and KYB endpoints and maintained 17+ database revisions with consistent migrations and backward compatibility.
• Reduced quarterly cloud compute costs by 15% through resource optimization and deployment improvements.
• Cut client integration time by 50% by shipping SDKs with clear APIs and documentation.

Selected experience

Tech stack

Smart contracts: Solidity, OpenZeppelin, Hardhat, Foundry
Backend: Node.js, TypeScript, NestJS, Express
Data and infra: PostgreSQL, MySQL, MongoDB, Docker, RabbitMQ
Other: Python (crypto analysis), Git, GitHub, Socket.IO
Language: English (C1)