Fin
Mobile Engineer
New York, NY
Sponsorship not specifiedDetected 231 days ago
ReactReact NativeiOSAndroidCode ReviewGCPCloud PlatformsRESTCybersecurityPenetration TestingCommunication
About the role
- This will be the first time many users interact with Fin, so your work will define how our product feels in the real world.
- You will turn messy real world payment flows into simple, intuitive interfaces, and help hide the complexity of crypto, wallets, and cross border settlement behind a smooth mobile experience.
Responsibilities
- Own the Fin mobile app across iOS and Android using React Native, from architecture to implementation and polish.
- Design and implement flows that make sending, receiving, and managing money feel simple and trustworthy for everyday users.
- Help design secure account and custody patterns that can scale to handle meaningful balances and real world usage.
- Collaborate with design and product to prototype, refine, and ship new features quickly.
- Maintain a high bar for code quality through thoughtful architecture, code review, and testing.
- our process focuses on practical system design and architectural discussions, not LeetCode grinding or unpaid take-home assignments.
Requirements
- 3+ years of experience building and shipping mobile apps in React Native.
- Deep familiarity with the Expo ecosystem and modern mobile build pipelines (EAS) is required.
- You have shipped an app from concept to production in a small team or as the primary developer.
- Experience in EITHER traditional consumer fintech apps (neobanks, peer-to-peer payments) OR mobile crypto wallets (Solana, non-custodial, etc).
- Experience with cloud platforms such as GCP or AWS.
- Experience deploying smart contracts on Solana or integrating with blockchain based systems.
- 3+ years of experience building and shipping mobile apps in React Native. Deep familiarity with the Expo ecosystem and modern mobile build pipelines (EAS) is required.
- Strong product sense and attention to detail in UI and UX, especially for consumer facing apps.
- Solid understanding of mobile app architecture, performance, and offline or edge cases.
- Ability to work independently, set priorities, and drive projects from idea to shipped.
- Strong communication skills and comfort collaborating with design, product, and backend teams.
- Interest in payments, fintech, or crypto. You do not need to be a chain maximalist, but curiosity about the space helps.
- Bonus Points
- Background in security, threat modeling, or penetration testing, especially for consumer finance products.
Company info
- Fin is a next-generation payments platform built for high-value, global, and instant transactions.
- We are a Series A-stage company backed by Sequoia, Circle, and other notable investors.
- Powered by stablecoins, Fin enables users and businesses to move millions of dollars in seconds - whether to other Fin users, directly into bank accounts, or across crypto rails.
- By combining the speed of crypto with the reliability and trust of traditional finance, Fin reimagines how money moves worldwide.
- If banks and payment products were reinvented today, they would look like Fin.
This listing is sourced directly from Fin's careers page and normalized into a canonical job model.