Siarhei Aviatsiuk

Professional Summary

I am a Senior Full-Stack Architect specializing in the convergence of Artificial Intelligence and Blockchain technology. I thrive in high-stakes environments where engineering velocity and system integrity are paramount. My methodology is rooted in AI-assisted engineering, leveraging tools like Claude Opus and Google Antigravity to deliver production-ready MVPs 5-10x faster than traditional development cycles. I don't just write code; I design scalable, secure, and cost-effective infrastructures that solve real-world business challenges.

Recent Technical Achievements

In the first week of 2026, I successfully engineered and deployed two major projects that showcase my range:

1. MediTrace (Pharma SCM): A hybrid Web3 supply chain system. I architected an immutable audit trail on Ethereum (Sepolia) and Polygon (Amoy), integrating it with a high-performance MERN stack. Key technical wins included implementing server-side transaction signing (Relayer pattern) for a gasless user experience, resolving complex BigInt serialization issues in REST APIs, and synchronizing real-time state between MongoDB Atlas and the blockchain.
2. AI Pulse TON: A sophisticated Telegram Mini App (TMA) that orchestrates autonomous AI agents using LangGraph. It provides real-time on-chain analytics for the TON ecosystem. The project features secure TonConnect UI integration and a native blockchain payment gateway for premium AI insights.

Engineering Mindset & Security

I maintain a security-first mindset, essential for the Web3 space. I recently performed a deep technical audit of a sophisticated zero-day phishing infrastructure, identifying malicious IP ranges and redirect patterns that automated scanners missed. My background in OSINT and high-load data warehousing with ClickHouse allows me to build systems that are not only intelligent but also resilient and data-transparent.

Why Hire Me?

I am a technical partner who understands the bottom line. By migrating audit trails from Ethereum L1 to Polygon L2, I’ve demonstrated the ability to reduce operational blockchain costs by over 98% while maintaining total data integrity. I am proficient in Python (FastAPI, AsyncIO), React/Next.js, Node.js, and advanced AI orchestration. Whether it is building a complex RAG-pipeline or a decentralized financial dashboard, I deliver "production-first" solutions ready for immediate scale.