Senior Smart Contract Engineer

About SymbioticAt Symbiotic, we are building a permissionless shared security primitive that empowers network builders to shape and personalise their unique restaking implementation. Our goal is to minimise risks while maximising freedom for all you wonderful builders of crypto infrastructure networks. We have a robust developer-centric proposition and we can't wait to share it with everyone.You can find more information about what we're building and how we're doing it in our docs.Our PeopleWe're a tight-knit team of experienced individuals at the forefront of crypto infrastructure. Our backgrounds range from security auditing and smart contract development to node operation, and we're supported by Paradigm and CyberFund.We're on the hunt for talented professionals to join our mission and strengthen our awesome team.The RoleWe are seeking a Senior Smart Contract Engineer to work on our existing smart contract codebase, including core contracts, core extensions, and middleware SDK, as well as develop new upcoming modules.What You'll DoWork at the intersection of blockchain protocols and smart contracts, contributing to the design and development of EVM-based systemsWrite, optimize, and audit smart contracts in Solidity, with a focus on performance, clarity, and securityBuild and experiment with staking, DeFi, and other protocol-level primitivesLeverage tools like Foundry and Hardhat for development, testing, and deploymentConduct and support security audits, addressing vulnerabilities and integrating best practicesCollaborate closely with protocol engineers to support integrations across L1 and L2 chainsWork with web3 libraries like ethers.js, viem, and web3.py for off-chain contract interactionsOccasionally contribute to related tooling and scripting in Python and TypeScriptWho You AreStrong understanding of Ethereum L1/L2 architecture and PoS mechanismsFamiliar with blockchain primitives such as consensus algorithms and cryptographyDeep knowledge of EVM internals: execution flow, memory/storage models, gas mechanics, and precompilesExpert in Solidity, with exposure to Yul, Vyper, or Huff (a plus)Solid grasp of DeFi concepts: DEXes, lending protocols, stablecoins, and staking mechanismsProficient with Foundry, Hardhat, and comfortable working with ethers.js, web3.js, viem, or web3.pyStrong security mindset, familiar with common attack vectors and the auditing processPractical coding experience in Python and JavaScript/TypeScriptNice to HaveExperience in compilers developmentExperience in Rust, Go, C/C++Experience in protocol development such as L1, L2OP stack, Arbitrum knowledgeExperience with ZK on EVM

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