pp1inch 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. /ph3Your Mission /h3pAt 1inch, our engineering needs evolve rapidly. We are constantly seeking exceptional Web3 and smart contract developers to join our mission. We look for engineers with a high-agency, "Get Stuff Done" mindset and an unrelenting passion for decentralised innovation. 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. By applying to this talent pool, you will be fast‑tracked for consideration the moment a new headcount opens in our general team. We welcome applications across all career stages—from highly capable developers early in their Web3 journey to seasoned principal architects. /ph3What You'll Do /h3ulliContribute to the design and optimisation of scalable, secure, and high‑performance blockchain architectures /liliDevelop, integrate, test,



and maintain smart contracts and decentralised protocol components /liliConduct technical research and support proof‑of‑concept initiatives for new blockchain and DeFi features /liliContribute to cross‑chain interoperability solutions, including bridging and atomic swap mechanisms /liliImprove execution efficiency and optimise smart contract logic for gas consumption and performance /liliCollaborate with engineering and security teams to identify vulnerabilities and strengthen protocol reliability /liliParticipate in code reviews, testing, CI/CD workflows, and engineering best practices /liliWork closely with cross‑functional teams to support successful product delivery and continuous improvement /li /ulh3Who You Are /h3ulliProfessional experience building and operating backend systems in production environments /liliStrong proficiency in Golang, Typescript or another backend/systems programming language with practical concurrency and performance knowledge /liliSolid understanding of system design fundamentals including services, data flows, reliability, and maintainability /liliFamiliarity with blockchain platforms, smart contracts, transaction handling,



and on‑chain integrations /liliExperience working with containerised services and modern deployment practices /liliStrong problem‑solving skills and ability to work effectively in fast‑paced engineering environments /liliAbility to balance technical quality, scalability, and operational reliability /liliAt senior level, experience owning projects end‑to‑end and contributing to architectural decision‑making /li /ulh3Nice to haves /h3ulliExperience contributing to open‑source blockchain or Web3 projects /liliFamiliarity with zero‑knowledge technologies or rollup architectures /liliExperience building distributed systems or low‑latency infrastructure /liliUnderstanding of blockchain infrastructure automation and deployment tooling /liliExperience working in high‑growth startup or scale‑up environments /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. We 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-18808-Ljbffr

📌 Talent Pool - Software Engineer, Blockchain / Web3 (Madrid)
🏢 1inch
📍 Madrid