We are looking for a Senior Mobile Engineer to lead the evolution of a high-performance React Native trading application within a fast-scaling DeFi environment. This role sits at the intersection of engineering, product, and design, focused on delivering premium, real-time mobile experiences that feel indistinguishable from fully native apps. You will own the technical direction of the mobile platform, ensuring fluid animations, seamless gestures, and resilient real-time data handling. The position requires deep expertise in performance optimization and advanced React Native tooling. You will collaborate closely with backend engineers to architect bandwidth-efficient APIs and real-time data layers. This is a high-impact opportunity for an engineer passionate about crafting refined, high-speed consumer trading experiences.

Details

Location: Remote in Europe or North America

Work Model: Fully Remote

Employment Type: Full-time

Seniority Level: Senior

Industry: DeFi / Trading Infrastructure

Start Date: ASAP

Key Responsibilities

Define and drive the technical roadmap for the mobile platform

Build high-performance React Native interfaces for trading, analytics, and social features

Implement advanced animations and gesture systems using Reanimated and Gesture Handler

Architect resilient real-time data layers using TypeScript and WebSockets

Optimize performance to consistently maintain 60 FPS across dynamic views

Bridge native modules to unlock advanced iOS and Android capabilities

Partner with backend teams to design efficient APIs and data flows

Identify and resolve UI jank, visual inconsistencies, and performance bottlenecks

Own features end-to-end from prototype through production release

Requirements

5+ years of experience shipping production React Native applications

Strong TypeScript expertise

Deep experience with React Native Reanimated and React Native Gesture Handler

Experience with low-level rendering tools such as Shopify React Native Skia

Proven performance optimization experience (real-time views, animated lists)

Strong understanding of iOS and Android layout, motion, and interaction patterns

Experience profiling and debugging performance using Flipper, Xcode Instruments, or Android Studio

Product ownership mindset with full lifecycle feature delivery

Nice to Have

Native mobile development experience (Swift/SwiftUI or Kotlin)

Background building highly interactive consumer apps (trading, gaming, creative tools)

Open-source contributions within the React Native ecosystem

Experience working in DeFi or financial trading environments

Interview Process

Founder / CEO Interview

Technical Assignment

Final Interview