Consumer fintech
Socios.com
Fan engagement app for football fans worldwide, with rewards, auctions and exclusive club content.
- Company
- Chiliz
- Role
- Frontend Developer
- Years
- 2022–2026
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Overview
Socios.com is a consumer fintech product used by football fans worldwide to access exclusive content, rewards and auctions from the clubs they follow.
I built and maintained the React web app and the React Native app, shipped side by side at 1:1 feature parity, with most of my work on the rewards team.
What I did
- Built a real-time auction system where fans bid on match-worn shirts and balls from European football games: lightweight WebSocket events, TanStack Query invalidate-and-refetch, and pessimistic minimum-bid validation at submit. Big-game shirts were heavily contested, and it shipped with no breaking bugs.
- Built checkout and purchase journey features on the rewards team, with Google Tag Manager and Google Analytics event tracking on each step.
- Integrated three in-house services (blockchain, back office and main app) to deliver Fan Token Offering, a purchase and checkout flow using a non-custodial wallet on the Chiliz Chain with fee-free transfers.
- Worked in a monorepo sharing types, utilities, the API layer and business logic between the React web app and the React Native app.
- Contributed to a 6-month NativeScript to React Native migration across 10 pages and 3 services, then maintained and extended the React Native app for 3+ years.
- Maintained and extended the in-house back office (Vue 2, Vuex), delivering new features and improvements.
Stack
- React 19
- Next.js
- TypeScript
- React Native
- Vue.js 2
- Vuex
- TanStack Query
- WebSockets
- Tailwind CSS
- shadcn/ui
- Storybook
- Playwright
- Vitest