Ashutosh Kumar

Protocol Engineer · Smart Contract Security · DeFi Systems

🏆 2nd Place Winner - Hedera Hello Future Hackathon 2025
Watch Hackathon Winning Experience

Professional Experience

Smart Contract Developer (Contract)
Offero
May 2025 – Jul 2025
  • Designed and deployed 10+ Solidity smart contracts for DeFi, NFT, and RWA use cases
  • Conducted manual smart contract audits — identified access-control vulnerabilities, logic flaws, and reentrancy risks
  • Achieved 25% gas reduction through storage packing, calldata optimization, and logic refactoring
Blockchain Developer
Freelance
Feb 2025 - Present
  • Designed and deployed decentralized applications with ERC-20/721 token standards
  • Delivered comprehensive blockchain solutions including lending/borrowing systems, staking modules, and auction platforms
  • Engaged directly with founders and stakeholders, delivering production-ready Web3 projects
Backend Developer (Intern)
Softintra Technology Pvt Ltd
Feb 2024 – Jul 2024
  • Built scalable Node.js REST APIs, improving response times by 30%
  • Designed and optimized PostgreSQL and MongoDB schemas for production applications

Featured Projects

Ethereum Engineering Masterclass

Content / Education

100-video Ethereum engineering curriculum across 10 seasons — EVM internals, Solidity, gas & storage optimization, proxy upgradeability (UUPS, Transparent, Beacon), smart contract security, ECDSA signatures, MEV & mempool mechanics, and L2 rollup architecture. Each video is 2–5 min, precision deep-dives. Complemented by 70+ hours of live protocol coding.

  • Tags: Solidity · EVM · Security · MEV · L2 · YouTube
Uniswap v3 — Internal Architecture Deep Dive

Protocol Engineering

Reconstructed Uniswap v3 concentrated liquidity mechanics from first principles — tick math, tick spacing, bitmap-based tick traversal for O(1) price boundary discovery, liquidityNet delta mechanics, and lazy fee accounting using feeGrowthGlobal and feeGrowthInside. Full recorded walkthrough on YouTube.

  • Tags: Solidity · AMM · DeFi · Uniswap · Protocol Engineering
Aave v3 — Internal Architecture Deep Dive

Protocol Engineering

Rebuilt core Aave v3 flows — supply, borrow, repay, liquidation, and flash loans. Implemented interest rate strategies, health factor logic, liquidation thresholds, and verified protocol invariants and security edge cases throughout.

  • Tags: Solidity · Lending · DeFi · Aave · Protocol Engineering
Decentralized RWA Banking Protocol

Full Stack DeFi

Full-stack DeFi protocol supporting lending, borrowing, staking, and real-world asset tokenization. ERC-20 and ERC-721 smart contracts integrated with a Next.js frontend. Role-based access control and upgrade-safe architecture.

  • Tags: Solidity · RWA · ERC-721 · Next.js · Full Stack
Hedera Hello Future Hackathon Winner

2nd Place - Innovative Web3 solution built on Hedera network

  • Secured 2nd place in the Hedera Hello Future Hackathon 2025
  • Built innovative Web3 solution leveraging Hedera's fast and secure network
  • Implemented smart contracts with focus on scalability and low transaction costs
  • Demonstrated at hackathon finals with live demo and presentation

Technical Skills

Smart Contracts

Solidity ERC-20/721/1155 UUPS Transparent Proxy Beacon Proxy Flash Loans Access Control

Protocol Engineering

AMMs (Uniswap v3) Lending (Aave v3) Tick Math Concentrated Liquidity Fee Accounting Interest Rate Models

Security

Reentrancy Delegatecall Exploits Oracle Manipulation Signature Replay MEV / Front-running Storage Collision DoS

Tooling

Foundry Hardhat Ethers.js Next.js Node.js PostgreSQL MongoDB Git Linux

Languages

Solidity TypeScript JavaScript

Certifications

Advanced Foundry

Cyfrin Updraft

Issued Jul 2025

Chainlink Fundamentals

Cyfrin Updraft

Issued Jul 2025 • Expires Jul 2026

Credential ID: CLF-P5ZEU3EAXXZXK

Solidity Smart Contract Development

Cyfrin Updraft

Issued Jul 2025

Blockchain Basics

Cyfrin Updraft

Issued Jun 2025 • Expires Jul 2026

Credential ID: BBCC-G MI6YUF 5BYF

Attendance Hashgraph Developer

The Hashgraph Association

Issued Jul 2025

Credential ID: 3eb5850e-0955-4db1-9fe5-f147fa3c40a2