Hey There, Iām Jayakumar,
a Smart Contract Engineer passionate about blockchain security, automated auditing, and DeFi innovations. I specialize in contract security automation, bytecode analysis, fuzzing and NFT solutions. Helping secure Web3 applications through cutting-edge research and tooling. š
Technologies
My Tech Stack
Languages
- Solidity
- Yul
- Rust
- Python
- JavaScript
Frameworks
- Next.js
- Node.js
- React.js
- Ether.js
- Web3.js
Tools
- Hardhat
- Remix
- Foundry
- Slither
- Echidna
- Halmos
- Brownie
About Me
Driven by curiosity, research, and innovation, I specialize in:
- Blockchain security, smart contract development, and decentralized applications.
- Contract security automation, bytecode analysis, and transaction tracing, contributing to the detection of multi-million dollar scam.
- Formal verification, fuzzing, and static analysis to enhance smart contract security across EVM-based blockchains.
- Researching and implementing on-chain automation, ERC-998 NFTs, DeFi security frameworks, and scalable smart contract architectures.
- Building security-focused development tools, enhancing testing methodologies, and optimizing blockchain-based infrastructure.
- Beyond tech, I enjoy exploring new ideas through books and blogs, hiking to refresh my mind, and watching anime as a way to appreciate storytelling and creativity.
- Passionate about securing Web3 and continuously pushing the boundaries of blockchain innovation š
Experience
Acomplishments
Open source Contribution
Slither, Halmos
Winners - capture the spec
Certora at DSS 2024
Won multiple bounties
ETH global hackathons
BEC vantage[2020]
Cambridge University
Completed multiple CTF's
Damn Vulnerable De-Fi , Paradigm , Rare Skills Gas-puzzles and Ethernaut
De-Fi Specialization
Duke University(Coursera)
Projects

Multimon
This is a Cross-chain, 998, Dynamic NFT's used in a Adventurous Exploration Game.It is nothing a but Pokemon Game in multi-chain where each chain is a realm.
- Solidity
- HyperLane
- React js
- Ether js
- Revise API

EVM Slot Reader
It is a Online tool which is mainly used to read private variables from verfied as well as unverfied contracts on EVM based chains.It returns the parsed output in the human readable form from hexdecimal fomrat stored on-chain.
- Solidity
- Ether js
- Next js

POS Blockchain
P2P connection established, Nodes automatically sync with each other when a transaction is posted. Implemented Block validation, Signature Validation, Transaction Validation and POS consensus protocol.
- Python

NFT Marketplace
A fully functional NFT Marketplace with all the basic features and an creator dashboard deployed on the polygon testnet.
- Nextjs
- solidity
- Tailwind CSS
- Hardhat
- ether js

Marketplace (Online Course Platform)
An upgrade to traditional platforms such as Udemy, coursera with a web3 view while Integraing it with existing web2 platforms.
- web3js
- Truffle
- Next js
- Tailwind CSS
- Solidity

Stop loss
A stop loss order is a tool that automatically sells your selected assets when its price reaches a specified level, called the stop price. We have implemented Trailing stoploss as a key feature.
- Solidity
- Ether js
- Next js
- chainlink oracle
- chainlink keeper function
- push protocol

Slice pay
Bridging the gap of crypto based micropayments and manage expense among groups, where in a single user pays for a group, which are then settled later by the individuals through both Fiat / Crypto
- Solidity
- Ether js
- Next js
- push protocol
- chainlink oracle

Edu-Lend
It is a education lending platform where all the certificates provided by the students are attested on chain and progress of sponsored are sent respective sponsors.
- Solidity
- Ether js
- Next js
- push protocal
- chainlink keeper function
- push protocol

Marketplace (Online Course Platform)
An upgrade to traditional platforms such as Udemy, coursera with a web3 view while Integraing it with existing web2 platforms.
- web3js
- Truffle
- Next js
- Tailwind CSS
- Solidity

Stop loss
A stop loss order is a tool that automatically sells your selected assets when its price reaches a specified level, called the stop price. We have implemented Trailing stoploss as a key feature.
- Solidity
- Ether js
- Next js
- chainlink oracle
- chainlink keeper function
- push protocol

Slice pay
Bridging the gap of crypto based micropayments and manage expense among groups, where in a single user pays for a group, which are then settled later by the individuals through both Fiat / Crypto
- Solidity
- Ether js
- Next js
- push protocol
- chainlink oracle

Edu-Lend
It is a education lending platform where all the certificates provided by the students are attested on chain and progress of sponsored are sent respective sponsors.
- Solidity
- Ether js
- Next js
- push protocal
- chainlink keeper function
- push protocol