We seek a highly experienced and talented Full Stack Developer (Backend / Blockchain Focus) to join our clients team. Currently, we are focusing our search on professionals based in Lisbon, Portugal. Would consider someone outside of Lisbon, just as long as you can travel to Lisbon every month or to meet the team in person.
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. While this is not a requirement, as we cater to the sophisticated traders' community, we will prioritize professionals with experience in building trading technology.
Your Responsibilities:
Develop, maintain, and optimize backend services related to the protocol
Develop APIs for front-end consumption and third-party integrations
Conduct thorough code reviews, vulnerability assessments, and penetration tests
Stay updated with the latest security threats and ensure our protocol remains resilient against attacks.
Contribute to frontend development and support integrations of web3 frontends with backend and smart contracts
Protocol 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 standards, incorporating the latest technologies and standards as they evolve.
Liaise with external audit firms for periodic reviews
Collaborate with the product and research teams to design novel DeFi products and services
Work closely with other engineers, researchers, designers, and stakeholders to ensure smooth development.
Mentor junior developers and foster a collaborative and innovative development environment
Provide clear documentation and training materials for the team
Requirements
Qualifications:
Bachelor's or Master's degree in Computer Science or a related field
Strong experience in backend development (JavaScript/TypeScript/Node, JVM, Go, GraphQL) and infrastructure
Proven 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 technologies
Passion for blockchain, decentralization, and financial innovation combined with a knowledge of DeFi platforms, token standards, and existing DeFi products
Strong attention to detail, especially in the areas of security and scalability
Excellent communication skills, both verbal and written
Nice to Have:
Contributions to a major DeFi project in trading, lending, and derivatives spaces
Technical curiosity, experience with other blockchain platforms and technologies
Other contributions to open-source blockchain projects
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