Recruitment Room Europe provided pay rangeThis range is provided by Recruitment Room Europe. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.
Base pay range$80,000.00/yr - $120,000.00/yr
We are a decentralized finance (DeFi) project on the brink of unveiling an on-chain derivatives trading venue (DEX). We aim to bring the largest asset class in traditional finance into the blockchain ecosystem. Our products are designed to cater predominantly to professional and sophisticated retail traders in the crypto ecosystem. Our team is distributed between London (business) and Lisbon (engineering).
We seek a highly experienced and talented Full Stack Developer (Backend / Blockchain Focus) to join our team. Currently, we are focusing our search on professionals based in Lisbon, Portugal. We offer an opportunity to join a well-funded project early in its lifecycle and apply your skills and knowledge to become a major driving force behind its success.
Your ResponsibilitiesBackend/Frontend Development & Security:Develop, maintain, and optimize backend services related to the protocolEnsure data consistency, fault tolerance, scalabilityDevelop APIs for front-end consumption and third-party integrationsConduct thorough code reviews, vulnerability assessments, and penetration testsStay updated with the latest security threats and ensure our protocol remains resilient against attacksContribute to frontend development and support integrations of web3 frontends with backend and smart contractsProtocol Design & Smart Contract Development:Design, develop, test, and deploy smart contracts on EVM Blockchains (Arbitrum, Ethereum, Optimism, Base, Polygon, others)Ensure all smart contracts are optimized, gas-efficient, and adhere to the highest security standardsLiaise with external audit firms for periodic reviewsCollaboration & Leadership:Collaborate with the product and research teams to design novel DeFi products and servicesWork closely with other engineers, researchers, designers, and stakeholders to ensure smooth developmentMentor junior developers and foster a collaborative and innovative development environmentProvide clear documentation and training materials for the teamQualificationsBachelor's or Master's degree in Computer Science or a related fieldStrong experience in backend development (JavaScript/TypeScript/Node, JVM, Go, GraphQL) and infrastructureProven experience in developing smart contracts on Ethereum or other major blockchain networks, proficiency in Solidity and a deep understanding of the Ethereum Virtual Machine (EVM)Experience with frontend development (React.js, Angular.js, etc)Familiarity with centralized and decentralized oracles, layer 2 solutions, and cross-chain technologiesPassion for blockchain, decentralization, and financial innovation combined with a knowledge of DeFi platforms, token standards, and existing DeFi productsStrong attention to detail, especially in the areas of security and scalabilityExcellent communication skills, both verbal and writtenNice To HaveContributions to a major DeFi project in trading, lending, and derivatives spacesTechnical curiosity, experience with other blockchain platforms and technologiesOther contributions to open-source blockchain projectsInterview ProcessHiring Manager Interview: Interview with the Backend Lead. Discussion about experience and candidates goals.
Technical Interview: 20 Minutes technical interview/chat. (No live coding required)
Seniority levelMid-Senior level
Employment typeFull-time
Job functionEngineering and Information Technology
IndustriesBusiness Consulting and Services
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