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Swapnil S. — Junior Blockchain Backend Developer from India

Swapnil S.

Junior Blockchain Backend Developer

India 3-6 years
Open to offersNew to Platform
Languages
English
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About

Swapnil S. is a seasoned Blockchain Protocol Engineer with over three years of experience in architecting Web3 systems, including stablecoin payment infrastructure and DeFi protocols. With a deep expertise in backend systems such as TypeScript, Rust, and NestJS, he has a proven record of developing scalable services capable of handling over 500 concurrent users using microservices architecture. His achievements include winning over five global hackathons, including MIT Bitcoin and ETH Global, where he showcased his skills in smart contract development using Move and Solidity. Swapnil has contributed significantly to decentralized AI networks as a Lead Protocol Engineer at Zynd AI, where he designed protocols enabling autonomous agent communication and developed Python SDKs integrating LangChain agents for decentralized identity management. At Astro Labs, he engineered stablecoin DeFi infrastructure on the AO blockchain, increasing asset trading to support substantial concurrent user volumes. Swapnil is adept with cross-chain bridge infrastructures, having implemented non-custodial USDC transfers using Circle’s CCTP, thus reducing settlement time while maintaining security. With a degree from Savitribai Phule Pune University, Swapnil continues to seek roles where he can leverage his specialized skills in high-performance Web3 teams.

Experience

  • Lead Protocol Engineer

    github.com/zyndai · 2024 — 2025
    Architected an inter-agent search and discovery protocol for decentralized AI networks utilizing microservices architecture, facilitating 100+ autonomous agents to discover, authenticate, and communicate through MQTT message broker with a PostgreSQL-backed registry system. Developed the ZyndAI Python SDK, integrating LangChain agents with the Polygon ID zero-knowledge proof system for decentralized identity management, and implemented RESTful APIs for secure cryptographic authentication. Created agent registry smart contracts in Solidity and NestJS backend APIs for identity verification, with an emphasis on optimized database queries and API endpoint design, upholding zero-knowledge privacy guarantees. Designed an integration for the x402 micropayment protocol in agent services, which involved developing React TypeScript applications, custom n8n workflow automation nodes, and webhook systems for automated payment processing.
  • Protocol Engineer

    bridge.astrousd.com · 2025 — 2025
    Architected and deployed production-grade stablecoin (USDA) DeFi infrastructure on AO blockchain. Developed RESTful APIs and microservices for onramp services and intent-based trading, effectively handling asset trading with support for 500+ concurrent users. Constructed a full-stack spot trading platform, including a React TypeScript frontend and a NestJS backend, employing a double-entry ledger system and real-time WebSocket price feeds, along with strategies for API rate limiting and caching with Redis. Engineered Hyperliquid API integration for perpetual futures trading and conducted comprehensive unit testing with Jest. Developed cross-chain bridge infrastructure connecting Base and Polygon networks using Circle’s CCTP protocol for non-custodial USDC transfers.
  • Web3 Incubator Fellow

    github.com/Transpact · 2023 — 2023
    Built an on-chain business contract management platform on NEAR blockchain utilizing Rust smart contracts, which enabled secure digital signatures and immutable edit history tracking. This platform supported over 150 test contracts and automated milestone verification, leading to a significant increase in contract workflow efficiency. Integrated RESTful APIs for frontend connectivity and implemented smart contract event listeners.
  • Open Source Developer

    github.com/OWASP-BLT · 2023 — 2023
    Developed a Layer 2 private blockchain solution featuring custom BACON cryptocurrency for a bug bounty platform. Deployed Solidity smart contracts using Hardhat to facilitate automated reward distribution on the Ethereum testnet, incorporating extensive unit tests and gas optimization. Streamlined payment processing by implementing smart contract automation to eliminate manual reward approvals, while integrating a cryptographic proof-of-submission system using Django REST APIs.
  • Linux Kernel Mentee

    LFX Mentorship · 2023 — 2023
    Contributed to the Linux kernel development process by identifying and addressing bugs within core subsystems through QEMU testing workflows. Improved system stability by merging patches into upstream repositories via Git workflows and kernel debugging tools.

Skills & Expertise

Education

  • Bachelor of Engineering - Computer Engineering
    Savitribai Phule Pune University · 2021 — 2025