Senior Blockchain Engineer - Solidity

London / Bucharest / Kiew / Marbella
Product & Engineering – Engineering /
Remote/Europe Based Only /
Remote
We are looking for an Senior Blockchain Engineer  to help design and develop secure, efficient, and scalable smart contracts for our Real-World Asset (RWA) protocol. You will play a key role in building DeFi functionalities, staking mechanisms, liquidity management, and DAO governance. This role requires experience in Solidity, Hardhat, Foundry, OpenZeppelin, and gas-optimized smart contract development.

Responsibilities

    • Develop secure and efficient smart contracts in Solidity for an RWA protocol
    • Write comprehensive tests using Foundry, Hardhat, and JestAudit and optimise smart contracts to identify and mitigate potential security vulnerabilities
    • Build client libraries (ethers.js, web3.js) to enable easy integrationsImplement gasless transactions
    • Collaborate closely with backend and product teams to integrate smart contracts into the broader system
    • Stay updated with the latest EVM advancements, security best practices, and DeFi innovations

Tech Stack

    • Smart Contract Development: Solidity, Hardhat, Foundry, OpenZeppelin
    • Blockchain Development: EVM-based chains
    • Libraries & Testing: ethers.js, web3.js, Jest
    • Security & Optimization: Gas optimisations, smart contract security, EIP-3009

Qualifications

    • 3+ years of experience developing EVM-based smart contracts
    • Strong knowledge of Solidity, Hardhat, and Foundry
    • Experience working on DeFi, RWA, staking, liquidity pools, and DAOs
    • Deep understanding of gas optimisations and security best practices
    • Familiarity with ERC-20, ERC-721, ERC-1155, and EIP-3009 for gasless transactions
    • Ability to write secure and well-documented smart contracts
    • Experience with auditing smart contracts and working with security firms

Nice to Have

    • Experience with bridges and Layer 2 scaling solutions
    • Knowledge of cross-chain communication
    • Familiarity with on-chain KYC mechanisms
Note:
We thank all applicants for their interest in our ad. We reserve the right to contact only candidates who correspond to the profile described in the recruitment announcement. For candidates selected in the recruitment process, following the legislative provisions on GDPR, consent for the processing and use of personal data will be required for participation in the recruitment and selection process for the position for which they applied.
If you're passionate about our mission and want to be a part of a dynamic team working towards a better financial future, we encourage you to apply for this exciting opportunity