10 months ago
Remote, United States or New York, NY, USAMid Level
Base Salary
$125k - $250k/yr
Responsibilities
- Own the Fin mobile application across iOS and Android using React Native, from architecture through implementation and polish.
- Design and implement simple, trustworthy flows for sending, receiving, and managing money.
- Help design secure account and custody patterns that scale to meaningful balances and real-world usage.
- Collaborate with design and product to prototype, refine, and ship features quickly.
- Maintain code quality through architecture, code review, and testing.
- Integrate APIs, payments, and identity or security features with backend and infrastructure engineers.
- Make foundational architecture and design decisions and ship features from idea to production.
Requirements
- At least 3 years of experience building and shipping mobile applications with React Native.
- Deep familiarity with the Expo ecosystem and modern mobile build pipelines, including EAS.
- Strong product sense and attention to detail in consumer-facing UI and UX.
- Solid understanding of mobile application architecture, performance, and offline or edge cases.
- Ability to work independently, set priorities, and drive projects from idea to production.
- Strong communication and collaboration skills with design, product, backend, and infrastructure teams.
- Interest in payments, fintech, or crypto.
- Experience shipping an application from concept to production in a small team or as the primary developer is a bonus.
- Experience with traditional consumer fintech applications or mobile crypto wallets is a bonus.
- Experience with GCP or AWS is a bonus.
- Experience deploying smart contracts on Solana or integrating with blockchain-based systems is a bonus.
- Background in security, threat modeling, or penetration testing for consumer finance products is a bonus.
Tech Stack
Categories
Mobile
About Fin
Fin builds a payments platform for high-value, global, instant transactions, powered by stablecoins. It serves businesses and individuals moving large sums, enabling transfers to other Fin users, bank accounts, or across crypto rails; revenue comes from payment fees. The privately held company is headquartered in New York and is Series A–stage, with backing from Sequoia and Circle.