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Senior Software Engineer, Blockchain (Smart Contracts)
Job Description
1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets - with the self-custody, comprehensive security and the intuitive user experience they need to unlock the potential of true crypto ownership. 1inch protocols and APIs provide core infrastructure across the DeFi industry and beyond. So if you're someone who thinks big, moves fast and wants to make an impact right from day one, then get ready to join our industry-changing team.
Requirements
Your mission At 1inch, our engineering needs evolve rapidly. We are constantly seeking exceptional smart contract engineers to join our mission. We look for engineers with a high-agency, "Get Stuff Done" mindset and an unrelenting passion for decentralised innovation. We also embrace AI as a force multiplier for engineering, and value developers who thoughtfully leverage AI-powered tools to accelerate development, improve code quality, and solve complex technical challenges As part of our engineering ecosystem, you will contribute to designing, developing, and optimising the smart contracts and underlying infrastructure powering 1inch. We value sophisticated problem-solvers who can navigate the lightning-fast shifts of the crypto landscape while executing securely at scale. Working alongside our product leads and world-class engineers, your commitment to open-source excellence will keep 1inch at the absolute cutting edge of DeFi. What you’ll do Design and optimise blockchain architectures with a strong focus on scalability, security, and performance Develop, integrate, and maintain smart contracts across decentralised protocols and infrastructure components Conduct technical research and build proof-of-concepts for new DeFi and blockchain innovations Design and improve cross-chain interoperability solutions, including bridging and atomic swap mechanisms Optimise smart contract execution efficiency with a focus on gas consumption and low-latency performance Collaborate with internal and external security auditors to identify vulnerabilities and strengthen protocol security Lead code reviews and contribute to engineering best practices, CI/CD workflows, and development standards Mentor junior and mid-level engineers while contributing to a collaborative engineering culture Who you are 7+ years of professional software engineering experience, including 3+ years focused on blockchain development Deep expertise in Ethereum and EVM ecosystems, including Solidity, Yul, and decentralised application architecture Strong experience building and deploying smart contracts in production environments Hands-on experience with Layer 2 scaling solutions and cross-chain infrastructure Proven ability to drive architectural decisions and lead complex technical initiatives from design to deployment Strong understanding of smart contract security principles, auditing processes, and vulnerability mitigation Experience working in fast-paced, high-growth engineering environments Strong problem-solving skills with a proactive, ownership-driven mindset Nice to haves Experience contributing to open-source blockchain or DeFi projects Familiarity with zero-knowledge technologies and rollup architectures Experience building high-performance distributed systems or low-latency infrastructure Understanding of DeFi protocols, liquidity aggregation, or on-chain trading systems Knowledge of Web3 developer tooling and blockchain infrastructure automation
About 1inch
1inch is at the forefront of the decentralized finance (DeFi) revolution, building innovative solutions that empower users with greater control and efficiency over their digital assets. As a leading DEX aggregator, we specialize in developing sophisticated algorithms that scour multiple decentralized exchanges to find and execute optimal trading paths, ensuring the best possible prices and lowest fees for our users. Our mission is to make DeFi accessible, secure, and highly performant for everyone, contributing to a more open and transparent financial future. Our culture at 1inch is driven by a passion for cutting-edge technology, constant innovation, and a collaborative spirit. We foster an environment in Dubai where brilliant minds can thrive, tackle complex challenges, and contribute directly to the evolution of Web3. We value independent thinking, proactive problem-solving, and a commitment to excellence, encouraging our teams to push boundaries and redefine what's possible in the blockchain space. Joining 1inch means becoming part of a dynamic, globally distributed team that is shaping the future of finance. We offer unparalleled opportunities for professional growth, allowing you to work on impactful projects with a direct influence on our product and community. If you are eager to make an indelible mark in blockchain technology and decentralized finance, and want to contribute to an organization that values innovation and impact, explore our open positions and build the future with 1inch.