iOS Engineer

Rain

8 days
New York, NY $170K – $240K • Offers Equity • Offers Bonus
Web3 Crypto Fintech Mobile Stablecoin Swift Architecture Engineering Full-time iOS CI/CD Networking On-site Payments Startup RESTful API State Management Code Review Mobile Development UIKit SwiftUI Combine Core Data App Store Project Structure Navigation Patterns Dependency Injection Secure Data Handling Code Quality Card Issuance Wallet UX Financial Transaction Flows WKWebView Hybrid Architecture Embedded SDK White-label Multi-tenant Fastlane Xcode Cloud Bitrise
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Rain is the global stablecoin payments platform for enterprises, neobanks, platforms, developers, and AI agents. Our technology allows partners to move, store, and use stablecoins instantly and compliantly through global payment cards, rewards, on/offramps, wallets, and cross-border rails. As both a Visa and Mastercard Principal Member, Rain issues cards that work at more than 175 million merchant locations in over 220 countries and territories. Built natively for stablecoins and trusted by more than 100 organizations worldwide, Rain delivers secure, scalable infrastructure that makes money move freely and instantly around the world. You will have the opportunity to deliver massive impact at a hypergrowth company backed by some of the top investors in fintech, crypto, and SaaS. In January 2026, we closed a $250M Series C led by ICONIQ, valuing Rain at $1.95B, with Sapphire Ventures, Dragonfly, Bessemer Venture Partners, Galaxy Ventures, FirstMark, Lightspeed, Norwest, and Endeavor Catalyst also participating. If you're curious, bold, and excited to help shape a borderless financial future, we'd love to talk. Our Ethos: We believe in an open and flat structure. You will be able to grow into the role that most aligns with your goals. Our team members at all levels have the freedom to explore ideas and impact the roadmap and vision of our company. About the Team: You'll be the lead iOS engineer at Rain, owning mobile alongside the lead Android developer from the ground up. Our partners use Rain's issuance platform and APIs to power card programs, wallets, and payment experiences for their end users, and you'll be the person who brings those experiences to life on iOS. You'll work directly with product, design, and our platform engineering team to define what great mobile looks like for Rain's clients and their customers. What you'll do: Own the entire iOS development lifecycle, from architecture and implementation to App Store delivery. Build polished, production-grade mobile apps that leverage Rain's issuance platform and APIs for clients and their end users. Collaborate closely with product, design, and backend engineers to define the mobile roadmap and translate platform capabilities into intuitive native experiences. Architect a clean, scalable codebase that can serve as the foundation as the mobile team grows. Integrate with Rain's APIs for card issuance, transaction management, balance queries, and other payment flows. Implement secure authentication, tokenization, and data handling appropriate for a financial services context. Drive decisions on tooling, frameworks, CI/CD, and testing strategy for mobile. Contribute to the broader engineering culture as an early team member with outsized influence on how we build.