Overview
Todas las habilidades, cualificaciones y experiencia relevantes que necesitará un candidato seleccionado se enumeran en la siguiente descripción.
1inch is the DeFi ecosystem building financial freedom for everyone. 1inch products help users and builders trade, hold and track digital assets with security and an intuitive user experience. We are looking for a Senior Blockchain Engineer with a Get Stuff Done mentality and a passion for innovation. You will design, develop, and optimise smart contracts and blockchain infrastructure, balancing fast execution with high security and quality.
Location : We hire with a focus on Dubai and Europe. For this role, candidates based in Dubai or working remotely within ±4 hours GST time are preferred.
Responsibilities
Design and optimise blockchain product architecture with a focus on scalability, security, and performance
Lead development, auditing, and integration of smart contracts within decentralised protocols
Conduct technical research and PoCs, implementing best practices in blockchain development
Develop and improve cross-chain interoperability solutions (cross-chain swaps, bridges)
Design and develop efficient algorithms with a focus on gas optimisation
Define and implement CI / CD processes for blockchain development
Analyse and address potential attack vectors and ensure security best practices
Monitor emerging blockchain, Web3, and crypto technologies
Perform rigorous code reviews, mentor developers, and enforce best practices in blockchain engineering
Collaborate with auditors and cross-functional teams to ensure successful product launches
Requirements
7+ years of software development experience, including 3+ years in blockchain engineering
Deep understanding of blockchain ecosystems, smart contracts (Solidity, Yul, EVM), and dApps
Hands-on experience with Ethereum, Layer 2 solutions (Optimistic & ZK Rollups), and cross-chain protocols
Proven track record in technical leadership, architectural decision-making, and mentoring teams
Strong background in blockchain security and smart contract audits
Skills
Solidity, Yul, Rust, TypeScript
Smart xcskxlj contract development and deployment frameworks (Foundry, Hardhat)
Understanding of DeFi protocols, AMMs, liquidity pools, and oracle integrations
Blockchain security principles and auditing methodologies
Experience in building high-performance distributed systems
Why you’ll love working with us
Join a young, creative team in a fast-paced, supportive environment
Open to new ideas — pitch your vision
Competitive pay aligned with skills and experience
Be part of shaping the future of DeFi
Unlimited vacation days
Fully compensated for work gear to set you up for success
Annual team retreats at top international locations
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Senior Software Engineer Blockchain • Madrid, ES