Senior Full-Stack & Web3 Engineer · Spain · remote
I take products from zero to production.
Senior Full-Stack and Web3 Engineer with 6+ years shipping end-to-end products across DeFi, fintech, media and SaaS. I own the whole stack: React and React Native on the front, Node.js/TypeScript on the back, AWS underneath, and Solidity when the product lives on-chain.
Today I cofound Supersolid with Dmitry Sabanin and Julian Irigoyen, and I work as the sole technical lead on a couple of SaaS products. I like small teams, clear ownership and getting things live.
What I'm building
Live or in build as you read this. Click through.
Intelligent Adjuster
The operating system for catastrophe response. Public adjusters, restoration companies and disaster response teams used to stitch together local news, scanner feeds, property records and weather by hand. Intelligent Adjuster watches all of it and turns it into one ranked list of property loss leads, minutes after an event. I architected and built the whole product as sole technical lead: the Next.js app, the Node.js backend on Supabase, real-time ingestion of dispatch audio (transcribed with Whisper), news and property data, AI qualification of leads, Stripe billing from single-county plans to multi-state deployments.
Supersolid
A trading desk and a venture foundry, started in 2026 with Dmitry Sabanin and Julian Irigoyen. We trade our own capital through Poor Hedge Fund and cofound companies with founders through the Foundry.
Keonda
A social marketplace for the sea: a live chart of boats, chat between guests, captains and providers, and a marketplace underneath. Live in the App Store.
Luxy
A concierge for Ibiza. A WhatsApp agent takes a request in plain language, a table, a boat, a villa, and turns it into something bookable with checkout attached.
SourceDart
Cross-platform SaaS for Walmart sellers: Chrome extension, iOS and Android apps and a TypeScript backend with pricing trends, reverse sourcing and seller analytics. Subscription billing, in-app purchases and social auth shipped end to end; live with paying users.
Radio Garka
The complete archive of Radio Garka, 260+ episodes since 2020, watchable or playable in the background. A weekend project that people actually use every Friday.
Client work, in production
Finished, handed over, and running.
WIN Investments
Tokenization platform for professional football players' economic rights (ERC1155), letting people invest in future transfer revenues. I architected the platform and designed the Solidity contracts for on-chain ownership and revenue distribution.
Basilic
Merchant payment platform for accepting USDT. I led the team, integrated Alchemy Notify for real-time on-chain transaction monitoring and owned the AWS deployment: Amplify, Elastic Beanstalk, Route 53 and DocumentDB.
UniFi
Non-custodial DeFi aggregator on Rootstock integrating Sovryn and Tropykus for swaps, lending and yield, with Web3Auth social login so people can get in without a seed phrase.
Live TV & streaming platform
Large-scale live TV and streaming platform. Migrated auth from cookies to JWT, integrated Firebase push across Chrome and mobile, and brought SSR to the React app for organic search.
Where I've worked
Argentina, Spain, and remote teams in between.
- 2026 — Present
Supersolid
Cofounder & Principal Engineer · RemoteCofounded with Dmitry Sabanin and Julian Irigoyen. Own products in fintech and quantitative trading, and cofounding engineering for other founders.
- 2024 — Present
Asterisk
Principal Engineer (Freelance) · RemoteSole technical lead across two SaaS products, owning architecture, infrastructure and full-stack delivery from concept to production.
- –Intelligent Adjuster: architected and built a real-time AI lead generation platform for public adjusters and catastrophe response teams, from ingestion pipelines to billing. In production with paying customers.
- –Delivered SourceDart, a cross-platform SaaS for Walmart sellers: Chrome extension, iOS and Android apps and a TypeScript backend, taken from zero to paying users.
- Mar 2022 — Dec 2025
WakeUp Labs
Senior Full-Stack Engineer · Remote · MadridFull-stack and smart contract development across DeFi and Web3 client products, collaborating with ecosystem teams at Optimism and Arbitrum.
- –WIN Investments: tokenization platform for football players' economic rights (ERC1155) on Polygon Mainnet.
- –Basilic: led the team behind a USDT merchant payment platform; Alchemy Notify and end-to-end AWS deployment.
- –UniFi: non-custodial DeFi aggregator on Rootstock with Sovryn, Tropykus and Web3Auth.
- Nov 2019 — Dec 2021
Toolbox
Senior Software Engineer · Remote · Buenos AiresLive TV and streaming platform serving Fox and Warner. Security, performance and cross-device reach.
- –Migrated authentication from cookies to JWT for security and horizontal scalability.
- –Firebase push notifications across Chrome and mobile; SSR with React Helmet for organic search.
- –Shipped multiple React releases with Redux and Hooks across devices.
- Mar 2018 — Nov 2019
MG Group
Software Engineer · Remote · Buenos AiresWeb and mobile platform for car loans and insurance, with a focus on infrastructure, testing and service architecture.
- –Node.js and C# microservices on AWS Lambda with SNS/SQS for async communication.
- –End-to-end Cypress coverage wired into a Jenkins CI/CD pipeline.
- –Native auth flows in the React Native app; legacy class components refactored to Hooks.
What I work with
- Languages
- TypeScript · JavaScript · Solidity · C#
- Frontend
- React · React Native · Next.js · Redux · Tailwind CSS · Figma
- Backend
- Node.js · REST · GraphQL · PostgreSQL · MongoDB · DocumentDB · Microservices
- Cloud & DevOps
- AWS (Lambda, EC2, Amplify, Elastic Beanstalk, SNS/SQS, Route 53) · Docker · GitHub Actions · Jenkins · CI/CD
- Web3
- Solidity · Viem · Wagmi · Ethers.js · Hardhat · Foundry · Web3Auth · ERC20 / 721 / 1155
- Testing
- Cypress (E2E) · Unit testing
Education
- Software Engineer — Universidad Nacional del Centro (UNICEN)Tandil, Argentina
- ARFITEC scholarship — Polytech MontpellierMontpellier, France · 2017 — 2018
Languages
Spanish (native) · English (fluent) · French (intermediate)
Community
Regular at ETHCC, ETHBarcelona and Crecimiento AR. Hackathons at ETHGlobal and Aleph.
Let's build something
Open to senior and principal roles, cofounding engineering, and the occasional side quest.