Backend and blockchain engineer
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.
- 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).
- 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.
Back-end Developer (Remote) | Stack | Mar 2024 - Present
- Built and maintained secure REST APIs and background workers using Node.js and TypeScript.
- Optimized serverless systems on AWS Lambda and Google Cloud Functions, reducing average latency by 70% and lowering infrastructure overhead by 50%.
- Integrated external services and data sources while sustaining 99.5% uptime through reliability and availability improvements.
- Established CI/CD workflows that raised test coverage to 95% and reduced production deployment failures by 40%.
- Improved release quality and operations, reducing post-release critical bugs by 15%.
Stack: Node.js, TypeScript, AWS Lambda, Google Cloud Functions, CI/CD
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)
Education
Computer Science (2015-2021)
GitHub trophies
Tooling
LLM platforms and routing: OpenAI, Anthropic, Google, OpenRouter, Fireworks AI, DeepInfra
Open-source and self-hosted: Hugging Face (private models)
Orchestration and evaluation: DSPy, Mastra, Python harnesses
Agents and async workflows: Cursor Cloud, asynchronous agent workflows
Automated code review: Cursor Bugbot, Codex review, Google automated code review, Auggie reviews
Developer workflow: VS Code, Cursor, Windsurf, Zed, Gemini CLI, GitHub Copilot