Senior Fullstack Engineer, Frontend

Alt(1 month ago)

HybridFull TimeSenior$140,000 - $160,000Engineering

About this role

Alt is building financial infrastructure for modern collectors, beginning with the trading-card market, and operates a highly rated mobile app for managing, valuing, and trading collections. The Senior Fullstack Engineer, Frontend is a senior mobile-focused engineering role on the product team working with React Native and the React web app to help scale Alt’s consumer fintech and marketplace product. This is a high-visibility position with opportunities to shape technical direction and grow into team leadership.

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Required Skills

React Native
JavaScript
TypeScript
Python
FastAPI
Postgres
iOS
Android
Kotlin
Swift

+5 more

About Alt

alt.xyz

Alt is a digital marketplace for authenticated, investment‑grade trading cards that helps collectors and investors buy, sell, and mint assets. The platform pairs transaction services (including auctions and listings) with industry‑leading research tools, market‑trend analytics, and portfolio features to support data‑driven decisions. Users can manage their collections, list cards for sale or auction, and access authentication and market data through the Alt app.