DeFi Engineering

An introduction to the engineering landscape in DeFi protocols: the distinct engineering roles (protocol, infrastructure, execution), the complete technology stack from smart contracts to off-chain systems, core primitives like liquidity pools and oracles, and what makes building in this space fundamentally different from traditional fintech.

Most DeFi discussions stop at smart contracts. This article goes deeper: through the data pipelines, executors, keepers, and coordination layers that make protocols run. If you're a software engineer, you'll see how DeFi architecture mirrors the systems you already know.

Blockchains are often explained through protocol-specific concepts like blocks or slots. This article reframes them as distributed state-transition systems, where ambiguity and delayed agreement exist to varying degrees across chains.

Ethereum is a replicated state machine for shared financial state. The EVM executes transactions deterministically, atomically, and under gas constraints while moving money, collateral, debt, ownership, and liquidity.

On-chain liquidity is capital under constraints: embedded in contracts, distributed across domains, consumed by transactions, and shaped by arbitrage capacity.

Step inside DeFi's hidden economy: how mempools, MEV and Flashbots turn transaction ordering into a latency-driven execution game where speed and visibility decide outcomes long before settlement.