Senior iOS Engineer — Fintech Wallet & Payments

RemoteStar; San Francisco (CA); On-site; USD 150,000 - 210,000; Full time

Job summary

RemoteStar in San Francisco is seeking a Senior iOS Engineer to lead mobile client development for a consumer fintech platform. You will architect the iOS app, set engineering standards, and build a high-performance, secure mobile experience from the ground up.

The role offers opportunities to expand across Android and mobile-friendly web apps, with potential to evolve into a mobile lead position as the organization scales. Strong Swift/SwiftUI skills and startup experience are highly valued.

Qualifications

• 5+ years of professional experience building consumer-facing iOS applications
• Experience in fintech, banking, payments, investing, digital wallets, cryptocurrency, or stablecoins
• Strong expertise in native iOS development with Swift
• Experience owning or leading the architecture of production iOS applications
• Experience building products from the ground up, preferably in a startup or small, high-autonomy engineering team
• Strong understanding of scalable and high-performance mobile architectures
• Production experience with SwiftUI
• Strong understanding of modern Swift concurrency and asynchronous programming
• Excellent understanding of APIs, networking, state management, persistence, and mobile system design
• Strong engineering judgment and the ability to explain why a particular technical approach is appropriate
• A product mindset — you care about the user experience, not just the implementation
• Ability to operate independently in a fast-moving, ambiguous environment

Responsibilities

• Architect and build a high-performance iOS application from the ground up
• Own major technical decisions around architecture, scalability, reliability, and maintainability
• Build secure experiences for authentication, account management, payments, and financial transactions
• Develop modern iOS experiences using Swift and SwiftUI, while leveraging UIKit where appropriate
• Design solutions for networking, state management, caching, synchronization, and API failures
• Establish engineering standards, patterns, testing practices, and CI/CD processes
• Work closely with backend engineers to design APIs and end-to-end product flows
• Partner directly with product and design to improve user experience and simplify complex financial workflows
• Help establish the technical foundation that future mobile engineers will build upon
• Contribute beyond the iOS layer when your experience can improve the overall product.

Skills

Mobile Development

iOS Development

Swift

Job description

RemoteStar in San Francisco is seeking a Senior iOS Engineer to lead mobile client development for a consumer fintech platform. You will architect the iOS app, set engineering standards, and build a high-performance, secure mobile experience from the ground up.

The role offers opportunities to expand across Android and mobile-friendly web apps, with potential to evolve into a mobile lead position as the organization scales. Strong Swift/SwiftUI skills and startup experience are highly valued.