Senior Software Engineer, Blockchain

ph3Overview /h3p1inch 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./ppSo 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./ppLocation: We prioritise candidates who are based in Dubai then consider those working remotely in one of our European Hub Locations (UK, Spain or Germany)./ppWe are seeking a bSenior Blockchain Engineer /b with a high-agency, "Get Stuff Done" mindset and an unrelenting passion for decentralised innovation./ppAs a core contributor to our engineering ecosystem, you will design, develop, and optimise the smart contracts and underlying blockchain infrastructure powering 1inch.This role requires a sophisticated problem-solver who can navigate the lightning-fast shifts of the crypto landscape while executing securely at scale.Working directly alongside our CPO, product leads, and world-class engineers, your commitment to open-source excellence will keep 1inch at the absolute cutting edge of DeFi./ph3Responsibilities /h3ulliArchitecture Scalability: Design and optimise robust blockchain product architecture, keeping scalability, security, and peak performance at the absolute forefront /liliSmart Contract Lifecycle: Lead the end-to-end development, integration, and internal auditing of high-value smart contracts across decentralised protocols /liliRD and PoCs: Conduct advanced technical research and execute proof-of-concept (PoC) experiments to pioneer new features within the DeFi space /liliCross-Chain Innovation: Design and evolve cross-chain interoperability solutions, including atomic swaps and advanced bridging infrastructure /liliGas Optimisation: Deep-dive into execution efficiency, designing algorithms with an extreme focus on gas preservation and low-latency performance /liliSecurity Audit Collaboration: Systematically analyse attack vectors, enforce ironclad security protocols, and collaborate directly with tier-one external auditors for flawless product launches /liliEngineering Excellence: Champion rigorous code reviews, build effective CI/CD pipelines for Web3, and mentor junior/mid-level developers to scale our technical capabilities /li /ulh3Requirements /h3ulliProven Footprint: 7+ years of professional software development experience, with a minimum of 3+ years dedicated purely to production-grade blockchain engineering /liliEVM Mastery: Deep, native understanding of the Ethereum ecosystem, smart contracts (Solidity, Yul), and the mechanics of decentralized applications (dApps) /liliScaling Infrastructure: Hands-on experience deploying to Layer 2 solutions (Optimistic ZK Rollups) and manipulating cross-chain architecture /liliTechnical Leadership: A proven track record of owning architectural decisions from inception to deployment, guiding development teams through complex technical delivery /liliSecurity Focus: Deep expertise in smart contract security principles, vulnerability mitigation, and the auditing process /li /ulh3Skills /h3ulliLanguages: Deep proficiency in Solidity, Yul, and TypeScript (experience with Rust is a strong advantage) /liliFrameworks: Mastery of modern smart contract development and deployment workflows, specifically Foundry and Hardhat /liliDeFi Domain: Advanced understanding of AMMs, liquidity pools, complex mathematical models, and oracle integrations (e.g., Chainlink) /liliSystems: Solid background in building high-performance, fault-tolerant distributed systems /li /ulh3Why join 1inch?/h3ulliPioneering Spirit: Work with a globally distributed, highly collaborative team that shaped the history of DeFi; from winning hackathons to launching one of crypto's most legendary retroactive governance token airdrops /liliImpact Autonomy: Join a fast-paced, supportive environment where fresh ideas are valued.If you have a vision, you will have the space and autonomy to pitch it and make it happen /liliCompetitive Compensation: Enjoy a competitive salary that matches your expertise, paired with a discretionary bonus scheme to reward your impact /liliFlawless Hardware Development: We set you up for success by fully providing equipment for your remote workspace, alongside a dedicated learning and development budget to support your professional growth /liliTrue Flexibility Industry Access: Take time when you need it with our unlimited paid time off policy.Plus, represent 1inch on the ground, with opportunities to be deployed to major international crypto events and hackathons as needed /li /ulp1inch is an equal opportunity employer.We are committed to evaluating all candidates on the basis of their skills, experience, and potential - regardless of race, ethnicity, nationality, gender, age, religion, disability, or any other characteristic.We believe diverse teams build better products, and we welcome applications from all backgrounds./ppWe use AI-assisted tools to help us review applications efficiently.These tools support our recruitment team but do not make decisions on our behalf - every application is reviewed by a person before any outcome is determined.No offer or rejection is made solely on the basis of automated processing.For full details on how we use these tools and your rights in relation to them, please see our Applicant and Candidate Privacy Notice./p /p #J-*****-Ljbffr

liliEngineering Excellence: Champion rigorous code reviews, build effective CI/CD pipelines for Web3, and mentor junior/mid-level developers to scale our technical capabilities /li /ulh3Requirements /h3ulliProven Footprint: 7+ years of professional software development experience, with a minimum of 3+ years dedicated purely to production-grade blockchain engineering /liliEVM Mastery: Deep, native understanding of the Ethereum ecosystem, smart contracts (Solidity, Yul), and the mechanics of decentralized applications (dApps) /liliScaling Infrastructure: Hands-on experience deploying to Layer 2 solutions (Optimistic ZK Rollups) and manipulating cross-chain architecture /liliTechnical Leadership: A proven track record of owning architectural decisions from inception to deployment, guiding development teams through complex technical delivery /liliSecurity Focus: Deep expertise in smart contract security principles, vulnerability mitigation, and the auditing process /li /ulh3Skills

h3ulliLanguages: Deep proficiency in Solidity, Yul, and TypeScript (experience with Rust is a strong advantage) /liliFrameworks: Mastery of modern smart contract development and deployment workflows, specifically Foundry and Hardhat /liliDeFi Domain: Advanced understanding of AMMs, liquidity pools, complex mathematical models, and oracle integrations (e.g., Chainlink) /liliSystems: Solid background in building high-performance, fault-tolerant distributed systems /li /ulh3Why join 1inch? /h3ulliPioneering Spirit: Work with a globally distributed, highly collaborative team that shaped the history of DeFi; from winning hackathons to launching one of crypto's most legendary retroactive governance token airdrops /liliImpact Autonomy: Join a fast-paced, supportive environment where fresh ideas are valued. If you have a vision, you will have the space and autonomy to pitch it and make it happen /liliCompetitive Compensation: Enjoy a competitive salary that matches your expertise, paired with a discretionary bonus scheme to reward your impact /liliFlawless Hardware Development: We set you up for success by fully providing equipment for your remote workspace, alongside a dedicated learning and development budget to support your professional growth /liliTrue Flexibility Industry Access: Take time when you need it with our unlimited paid time off policy. Plus, represent 1inch on the ground, with opportunities to be deployed to major international crypto events and hackathons as needed /li /ulp1inch is an equal opportunity employer. We are committed to evaluating all candidates on the basis of their skills, experience, and potential - regardless of race, ethnicity, nationality, gender, age, religion, disability, or any other characteristic. We believe diverse teams build better products, and we welcome applications from all backgrounds. /ppWe use AI-assisted tools to help us review applications efficiently. These tools support our recruitment team but do not make decisions on our behalf - every application is reviewed by a person before any outcome is determined. No offer or rejection is made solely on the basis of automated processing. For full details on how we use these tools and your rights in relation to them, please see our Applicant and Candidate Privacy Notice. /p /p #J-*****-Ljbffr