Blockchain Developer - Solidity, Smart Contracts, Node.js

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£550 - £750 a/day DOE - Outside IR35Jefferson Frank are working with a very exciting DeFi start up business that has seen immediate traction since going live with their trading and lending platform. In this very exciting period of growth they are looking to scale considerably and are now looking to on board experienced Blockchain Developers to be fully remote and rates does depend on experience. Key responsibilities: Develop and test smart contracts related to lending, borrowing, trading, bridging and governanceReview contracts of team members for logic flaws or security issuesSuggestions for new features or improvements to the systemLead on the development of new features Back end development relating to smart contractsExperience required: General Blockchain experience, preferably BitcoinMinimum 2 years Solidity experienceMinimum 5 years Development experience, back end focusedSkills desired: Solidityweb3Test framework: ideally hardhat, but truffle experience is also acceptableStrong sense of security. Knowledge of common vulnerabilities in smart contracts and blockchain development in general.Preferably Node.js, Golang or Java