Hi, I'm Rajeeb
Blockchain Developer with 4+ years of experience in leading and delivering high-impact projects in DeFi and infrastructure tooling with expertise in building secure smart contracts and scalable dApps.
Skills
Frontend
Backend
Blockchain
Tools
Ethereum
I've been involved with blockchain companies for over 4 years as an Ethereum Blockchain Developer.
Starknet
I've spent the past 1.5+ years working with blockchain companies as a Starknet Blockchain Developer.
Diamante Net
For the past 6 months, I've been exploring Diamante Net Blockchain, delving into its unique features and capabilities.
Stellar
For the past 4 months, I've been exploring Stellar Blockchain, gaining hands-on experience with its decentralized payment system.
Work Experience
Senior Blockchain Engineer
Filament Finance, Singapore
August 2024 - Present
Developed smart contracts for Filament Pro, a hybrid perpetual DEX on Sei, and Memex, a meme coin perpetuals trading platform with Orderly Network. Built FlashDuels, a scalable prediction market smart contract, and conducted smart contract audits with Zokyo and Hexens to enhance security. Proficient in Solidity, Node.js, TypeScript, and DeFi-focused development and auditing.
Research Engineer
Nethermind, London, United Kingdom
Apr 2024 – Jul 2024
Contributed to developing the Stwo prover, an advanced Circle STARKs prover and verifier in Rust, and worked on benchmarking and optimizing performance between Stwo and Stone provers. Proficient in Rust, C++, Cairo, cryptographic protocols, proof systems, FFT optimization, and polynomial basis computation.
Senior Blockchain Engineer
Auro Digital Inc, Miami, FL, USA
Nov 2023 – Mar 2024
Integrated 1inch Fusion API and CCXT library for a trading exchange and developed cryptocurrency API integration for real-time and historical data. Led the development of investor portfolio algorithms and platforms (OMS, PMS, IMS) and designed the Auro.edu investment learning platform. Proficient in Ethereum, Solidity, Python, Flask, Django, CI/CD, Docker, and AWS.
Blockchain Engineer
Hashstack Finance, Bangalore, India
Dec 2022 – Oct 2023
Led the design and implementation of smart contracts for a DeFi lending and borrowing protocol on EVM and Starknet, ensuring SWC compliance through internal audits. Managed QA for thorough testing, reduced feature development time by 20% with TRD implementation, and collaborated on seamless web3 integrations. Proficient in Solidity, Cairo, Rust, Go, React.js, and CI/CD tools.
Blockchain Developer (R&D)
GuardianLink, Chennai, India
Jul 2021 – Nov 2022
Conducted presale and market research for Ethereum, Binance, and Polygon blockchains, and developed token smart contracts (ERC-20/BEP-20) and NFTs (ERC-721/1155) on DApp platforms. Contributed to the successful launch of Amitabh Bachchan’s BigB Punks and Stan Lee’s The Invincible Chakra NFTs, handling minting, smart contracts, and blockchain integration. Proficient in Solidity, Hardhat, Truffle, React.js, and Web3.js.
Achievements
StarkHack Hackathon Winner 🏅
Won $8,500 for developing Attest Me, an innovative blockchain-based Attestation Service on Starknet Ecosystem.
Diamante Net Hackathon Winner 🚀
Secured a $17,000 prize for FractalShares, a simplified solution for the tokenization of real-world assets, which enables fractional ownership.
ETHOnline Hackathon Winner 🌟
Developed AuraAsset, empowering investments through the tokenization of RWA, and won the Pool Prize from Sign Protocol.