darren.jensen
I am a Security Researcher & Blockchain | LLM Engineer with 5+ years of dedicated Solidity auditing and 20+ years in software engineering across DeFi, Web3, and FinTech. Across Quantstamp and Oak Security I've delivered 60+ audits, acting as lead auditor on roughly half of my Quantstamp engagements. I hold an MSc in Computer Science from The University of Manchester alongside a Blockchain Developer Nanodegree and an AI / Machine Learning Nanodegree from Udacity.
On the AI side, I'm building an agentic DeFi yield platform which is a multi-agent system where a Portfolio AI Agent reasons over a user's on-chain positions and a Researcher AI Agent continuously embeds DeFi news and exploit reports into a vector index for semantic retrieval.
I have also held senior leadership roles including CTO at a FinTech startup in SE Asia. I'm currently open to both smart contract security engagements and AI Engineering roles where deep blockchain and security context is a valuable enhancement for building agents, retrieval systems, and LLM-powered tooling for DeFi, security, and on-chain intelligence.
REVIEWS FROM CLIENTS
During my time at Quantstamp, I completed over 50 audits across Solidity and Rust-based protocols, acting as lead auditor on approxima...
During my time at Quantstamp, I completed over 50 audits across Solidity and Rust-based protocols, acting as lead auditor on approximately half of all engagements. The protocols spanned a broad range of DeFi verticals including Oracles, Perpetuals, RWA, Bridges, Vaults, and Wallets. Notable clients include API3, Blockdaemon, PancakeSwap, RFX Exchange, SoDex, OnRe, Exceed Finance, Camp, Hipo Finance, and Crouton Finance, among others.
As a Smart Contract Security Researcher at Oak Security, I focused on auditing and enhancing the security of smart contracts. My role ...
As a Smart Contract Security Researcher at Oak Security, I focused on auditing and enhancing the security of smart contracts. My role involved collaborating with innovative protocols like Mars V2 and Size Lending, ensuring robust security measures were in place. I utilized my expertise in Solidity, Yul, and Rust (CosmWasm) to identify vulnerabilities and improve overall contract integrity.
At Alethea AI, I specialized in auditing smart contracts, ensuring the security and efficiency of the protocol. My role involved evalu...
At Alethea AI, I specialized in auditing smart contracts, ensuring the security and efficiency of the protocol. My role involved evaluating ERC20 tokens, NFT tokens, and LayerZero bridging integrations across multiple EVM chains, including Ethereum and Polygon. I contributed to the integrity of the AletheaAI protocol by focusing on critical integrations and security measures.