# Senior React Native Performance Engineer at Afriex

- Company: Afriex (YC S20)
- What the company does: Instant, low-fee remittances. Backed by Y Combinator.
- Company website: https://www.afriexapp.com
- Type: Startups
- Level: Senior
- Location: Remote
- Work setup: Remote
- Pay: $100K to $120K base salary per year (USD)
- Posted: 2026-01-28
- Apply by: 2026-10-08
- Apply: https://www.ycombinator.com/companies/afriex/jobs/4VtOnnB-senior-react-native-performance-engineer
- Page: https://www.1752.vc/careers/jobs/afriex-senior-react-native-performance-engineer/

## About the role

We are building a high-stakes mobile experience where "fast" is the baseline and "fluid" is the requirement. We need an engineer who is obsessed with the mechanics of mobile performance—someone who views a dropped frame as a bug and a 2-second loading state as a failure. You will be responsible for ensuring our app feels like a premium native product while handling complex, real-time financial data.

## What they're looking for

- The "Big Three": Expert-level proficiency in react-native-reanimated , react-native-gesture-handler , and react-native-screens
- Data Synchronization: Professional experience with TanStack Query (React Query) or SWR for managing server state, polling, and background refetching
- The Bridge & Beyond: Deep understanding of the React Native architecture (Bridge vs. Fabric) and the ability to write custom TurboModules in Swift or Kotlin when JS performance hits a ceiling
- List Mastery: Proven experience optimizing large datasets using FlashList (Shopify) or highly optimized FlatLists
- Profiling Tools: Mastery of Flipper, React DevTools, and iOS/Android native profilers to identify and kill "Jank."

Tags: Engineering