Senior Solidity Software Developer
📍 Málaga, Spain
Senior software developer with 10 years of experience building in startups, looking forward to lead, design and develop Web3 products and dev tooling. Deep expertise in Solidity, DeFi protocols, smart contract security, and full-stack development across EVM chains since 2018.
Salary
USD 250,000 – 300,000
CLOVIS - YEI.FINANCE
Oct 2025 — Present
Design specs for onchain finance primitives (bridge, lending markets, rebalancing, staking, revenue sharing) based on cross-chain hub and spoke architecture. AI-driven development of smart contracts, backends and frontends using Claude Code agents, Foundry, Bun, Typescript, React, Vite, Hono.
ALTO
Aug 2024 — Jul 2025
Codebase refactors, develop and test Solidity contracts using Foundry and Claude Code for a DeFi lending protocol with token options and advanced locking mechanism. Created tests with full coverage using BTT testing technique and fuzzing, reducing audit findings from highs/criticals to few lows. Developed deployment scripts and performed devnet releases using Foundry and Catapulta.
CATAPULTA
Nov 2023 — Jul 2025
Designed, developed, launched and maintained Catapulta.sh, a developer tool allowing devs to deploy and track smart contracts across 20+ EVM chains without gas, cryptocurrencies or RPC configs, compatible with Foundry and Hardhat. Hired, coordinated and led a team of devs and non-tech people.
WEB3 OPS
Jul 2022 — Aug 2024
Web3 consulting agency providing Web3 expertise and Solidity development to multiple startups including Ethena, Aave DAO service providers and Reental in multi-chain environments. Developed Solidity smart contracts, tests and deployment scripts with Foundry.
AAVE
Aug 2020 — Apr 2023
Developed and maintained a top DeFi protocol with Solidity smart contracts with up to $22B TVL, following maximum security standards. Performed critical Web3 multi-chain on-chain operations and deployments to expand Aave V2 and V3 to multiple networks. Integrated smart contracts within the frontend using React, TypeScript, Ethers.js. Participated as speaker in meetups and workshops.
RAISE
Jun 2019 — Jul 2020
Developed and launched an ERC20 loan marketplace on Ethereum Mainnet compliant with KYC regulations. Analyzed, tested and developed secure smart contracts with Solidity, Truffle and Buidler. Integrated smart contracts within the frontend using React, TypeScript, Web3.js and GraphQL via The Graph. Mentored the team on blockchain development.
BIGPYX
Mar 2019 — May 2019
Designed and built scalable cloud architecture with Kubernetes. Designed and developed a financial platform for private investments using MongoDB, NodeJS and Vue.js.
PUZZLEGOLD SL
Sept 2018 — Mar 2019
Designed and developed secure smart contracts. Integrated smart contracts into frontend with React, Web3.js and Drizzle.
PALM TREE STATISTICS
Sept 2016 — Aug 2018
Responsible for software architecture, server infrastructure, backend/frontend implementation and maintenance of an analytics platform for law cases in Denmark. Built backend REST API with Node.js, Express, Kubernetes, Docker and MongoDB.
ILAB1
Aug 2016 — Sept 2016
Designed and developed a Web3 app prototype using Meteor, NodeJS, MongoDB, Chainpoint standard protocol and Bootstrap. Designed server architecture on Google Cloud Platform using Nginx, Docker and Mup.
Freelance
Mar 2015 — Jan 2016
Developed web templates and web projects for online shops. Remote troubleshooting, hardening of Linux web servers, anti-spam services and firewalls.
Ethereum and Solidity Developer Program
2018 – 2018
CFGS ASIR · Higher Technician in Computer Network Systems Management
2013 – 2015
CFGM EEC · Technician in Consumer Electronics Equipment
2011 – 2013