Mobile Engineer - React Native for Fintech & Crypto

CryptoproNetwork; New York, Northern (NY, KY); Hybrid; USD 120,000 - 170,000; Full time

Job summary

Fin is seeking a Mobile Engineer to own the mobile experience across iOS and Android using React Native. You will turn complex payment flows into simple interfaces and define the product feel in users' hands.

This role emphasizes practical system design and production-ready features rather than take-home tasks. You will collaborate with founders and engineers, shaping architecture and shipping features from idea to production, with a focus on secure, scalable mobile experiences in the

Qualifications

• 3+ years building and shipping mobile apps in React Native.
• Strong product sense and attention to UI/UX for consumer apps.
• Solid understanding of mobile app architecture, performance, and edge cases.
• Ability to work independently, set priorities, and drive projects to shipping.
• Strong communication skills and cross-functional collaboration.
• Interest in payments, fintech, or crypto.

Responsibilities

• Own the Fin mobile app across iOS and Android using React Native, from architecture to implementation.
• Design and implement flows for sending, receiving, and managing money for everyday users.
• Help design secure account and custody patterns scalable to meaningful balances.
• Collaborate with design and product to prototype, refine, and ship new features quickly.
• Maintain high code quality through architecture, code review, and testing.
• Work with backend and infra engineers to integrate APIs, payments, and identity or security features into the mobile app.

Skills

React Native

Expo ecosystem

Mobile architecture

UI/UX focus

Independent worker

Communication

Payments/fintech/crypto interest

Tools

EAS

CI/CD pipelines

Job description

Fin is seeking a Mobile Engineer to own the mobile experience across iOS and Android using React Native. You will turn complex payment flows into simple interfaces and define the product feel in users' hands.

This role emphasizes practical system design and production-ready features rather than take-home tasks. You will collaborate with founders and engineers, shaping architecture and shipping features from idea to production, with a focus on secure, scalable mobile experiences in the