Senior React Native Mobile Engineer - Fintech Trading

Arcus; Northern, New York (KY, NY); Hybrid; USD 210,000 - 270,000; Full time

Job summary

Arcus is building the future of global markets with a mobile-first platform. We’re seeking a seasoned React Native engineer to own mobile features from architecture to release, collaborating with product, design, and backend teams to deliver fast, reliable trading experiences.

You will work on crypto wallets, DeFi interfaces, and real-time updates, ensuring high performance and excellent user experience across iOS and Android.

Qualifications

• 5+ years of software engineering experience focusing on mobile apps.
• Proven record ships React Native apps at scale.
• Strong JS/TS proficiency and mobile architecture knowledge.
• Experience publishing on iOS and Android.
• Excellent collaboration with design and product teams.

Responsibilities

• Build and enhance Arcus mobile app using React Native.
• Own end-to-end features from architecture to release.
• Collaborate with product, design, and backend teams.
• Define technical direction and app architecture.
• Improve performance, reliability, observability, and DX.
• Work with blockchain-related interfaces and crypto wallets.
• Partner with cross-functional teams to deliver trading experiences on mobile.

Skills

React Native

JavaScript

TypeScript

Mobile architecture

Performance optimization

Testing

Cross-functional collaboration

Fast learner

Education

CS degree or equivalent

Tools

Redux

React Query

Zustand

iOS (Swift)

Android (Kotlin)

Job description

Arcus is building the future of global markets with a mobile-first platform. We’re seeking a seasoned React Native engineer to own mobile features from architecture to release, collaborating with product, design, and backend teams to deliver fast, reliable trading experiences.

You will work on crypto wallets, DeFi interfaces, and real-time updates, ensuring high performance and excellent user experience across iOS and Android.