iOS Engineer

About the Company

Rain makes the next generation of payments possible across the globe. We’re a lean and mighty team of passionate builders and veteran founders. Our infrastructure makes stablecoins usable in the real-world by powering card transactions cross-border payments B2B purchases remittances and more. We partner with fintechs neobanks and institutions to help them launch solutions that are global inclusive and efficient. You will have the opportunity to deliver massive impact at a hypergrowth company that is funded by some of the top investors in fintech crypto and SaaS including Sapphire Ventures Norwest Galaxy Ventures Lightspeed Khosla and several more. 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

You are likely to succeed if you have:

• 4–10 years of professional mobile development experience with multiple apps shipped to the App Store

• Proficiency in Swift and deep familiarity with Apple's frameworks (UIKit SwiftUI Combine Core Data etc.)

• Experience architecting iOS apps from scratch. You've made foundational decisions on project structure navigation patterns state management and dependency injection

• Solid understanding of networking layers RESTful API integration and secure data handling

• A disciplined approach to code quality: you write testable code value code review and care about maintainability

• Comfort working autonomously with minimal direction — you'll be the mobile expert in the room

• Strong product sensibility: you think beyond tickets and advocate for great user experiences

• Excellent communication skills; you can translate technical tradeoffs for non-technical stakeholders

Bonus attributes:

• Experience in fintech payments or crypto/web3

• Familiarity with card issuance wallet UX or financial transaction flows

• Experience with WKWebView-based hybrid architectures or embedded SDK patterns

• Background in building white-label or multi-tenant mobile experiences

• Exposure to CI/CD tooling for iOS (Fastlane Xcode Cloud Bitrise etc.)

• Experience being the first or early mobile hire at a startup

Things that enable a fulfilling healthy and happy experience at Rain:

Unlimited time off 🌴Unlimited vacation can be daunting so we require Rainmakers to take 10 days minimum for themselves.

Flexible working ☕ We support a flexible workplace if you feel comfortable at home please work from home. If you’d like to work with others in an office feel free to come in. We want everyone to be able to work in the environment in which they are their most confident and productive selves. New Rainmakers will have a stipend to create a comfortable atmosphere at home.

Easy to access benefits 🧠For US Rainmakers we offer comprehensive health dental and vision plans for you and your dependents as well as a 100% company subsidized life insurance plan.

Retirement goals💡Plan for the future with confidence. We offer a 401(k) with a 4% company match.

Equity plan 📦 We offer every Rainmakers an equity option plan so we can all can benefit from our success.

Rain Cards 🌧️ We want Rainmakers to be knowledgeable about our core products and services. To support this mission we issue a card for our team to utilize the card for testing.

Health and Wellness 📚 High performance begins from within. Rainmakers are welcome to use their card for eligible health and wellness spending like gym memberships/fitness classes massages acupuncture - whatever recharges you!

Team summits ✨ Summits play an important role at Rain! Time spent together helps us get to know each other strengthen our relationships and build a common destiny. Expect team and company offsites both domestically and internationally.

What We Do

Our technology makes it easy for companies—from fast-growing startups to global fintechs—to integrate stablecoins into their products platforms and payment flows. Whether they’re launching a credit card program enabling cross-border payments or embedding wallets Rain builds the tools to do it fast flexibly and compliantly. We’re built for the next generation of global finance. Our infrastructure combines the stability of trusted payment networks with the power of Web3—multi-chain support 7-day-a-week settlement and seamless stablecoin interoperability. We help companies unlock real-world use cases for digital assets without the regulatory headaches or crypto complexity. Rain is a Visa Principal Member and is trusted by over 130 organizations worldwide. We’ve processed hundreds of millions of dollars in transactions across 150+ countries—and we’re just getting started. If you’re excited about building the future of payments we’re always looking for more Rainmakers to help us make money move—instantly globally and securely.

Why Work With Us

Rain is building frontier fintech at a moment of real regulatory clarity which has unlocked a massive new market for stablecoins. Backed by top institutional and crypto-native investors we’re a lean team with a big mission. All Rainmakers take on real ownership tackle complex problems and have fun doing it.

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