The language behind Ethereum and EVM-compatible smart contracts
Solidity is the primary programming language for writing smart contracts on Ethereum and other EVM-compatible blockchains code that executes exactly as written, permanently, on a public ledger. It's designed specifically for the constraints of blockchain execution: deterministic, gas-metered, and immutable once deployed.
A bug in a traditional application gets patched. A bug in a deployed smart contract is a permanent, public record sometimes an exploitable one. Writing Solidity well means treating every line as something that can't be quietly fixed later, which is a fundamentally different discipline than most application code.
We write and review Solidity smart contracts with that permanence in mind least-privilege design, thorough testing against edge cases, and the understanding (detailed in our Web3 security case study) that contract security is necessary but not sufficient on its own.