Julian Kumarakulasingam
7+ years building high-performance trading systems for tier-1 investment banks — and building DeFi & on-chain tools on the side.
Quantitative developer with 7+ years building high-performance trading systems for tier-1 investment banks — front-office tools, risk analytics and automated strategies.
A proven track record of systems that directly impact PnL, reduce operational risk and improve execution quality — across equity derivatives, commodities and fixed-income ETF market making.
Today I bring that rigor on-chain: writing Rust and Solidity, building DeFi trading systems and shipping open-source tooling. I optimize for correctness under pressure — if it touches capital, it has to be exact.
Experience
Education
Personal projects
Solana Cross-DEX Arbitrage Engine
Off-chain bot scanning liquidity pools across Solana DEXes to capture price discrepancies, paired with a real-time monitoring dashboard.
Solana DEX Sniping Bot
Ultra-low-latency bot achieving consistent fast execution on new token launches.
Aster Market Maker
Automated market-making system providing continuous two-sided liquidity on the Aster perpetuals DEX.
Polymarket Arbitrage
Arbitrage engine detecting and capturing mispricings across prediction-market order books.
Aave Liquidation Bot
Real-time monitoring of Aave health factors, identifying liquidation opportunities with an automated alert system.
Strategy Backtester
Backtesting engine for systematic trading strategies over historical market data.
NFT Game Smart Contracts
On-chain game with Solidity smart contracts implementing secure minting and transfer mechanisms.
01Programming Languages
PythonExpert
RustIntermediate
SolidityIntermediate
TypeScriptIntermediate02Blockchain
Solana
Ethereum (EVM)
Foundry
Anchor
Brownie
GraphQL03Web & Data
React
PostgreSQL
Tailwind04DevOps & Tools
Git
Docker
Kubernetes
Linux