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Monstro · 19 hours ago

Staff iOS Engineer

United States

Full-time

Hybrid

Lead/Staff

$190K/yr - $222K/yr

10+ years exp

Monstro is an AI-native fintech platform reimagining how people and institutions manage money. They are seeking a seasoned Staff level iOS Engineer to lead and evolve the native iOS experience for their financial platform, ensuring high-performance systems that help users manage their financial lives.

AccountingEdTechFinanceFinTechInsurTechLegal TechPersonal FinanceWealth Management

Hiring Manager

Autumn Coffee

Responsibilities

Design, build, and maintain core features using Swift and modern iOS frameworks (SwiftUI, UIKit, Combine, Swift Testing, Swift Data). Deliver smooth, intuitive user experiences that support complex financial workflows. Own feature development end-to-end—from architecture to implementation, testing, and release, including TestFlight builds and deployment to the Apple App Store

Establish scalable iOS application leveraging SwiftUI architectural patterns such as async/await and data flows. Optimize performance, responsiveness, offline/online behavior, and data persistence. Build for speed •and• correctness in a regulated environment

Integrate the mobile client with backend APIs, financial data systems, and third-party providers. Work closely with backend engineers to shape efficient API interactions and ensure seamless real-time data flows within the app

Implement secure data handling practices required for financial applications. Ensure proper encryption, secure storage, authentication flows, and session management. Build with the rigor necessary for regulated, high-trust environments

Partner with product managers, designers, and fellow engineers to deliver cohesive, user-centered features. Contribute to architectural discussions, planning, and code reviews. Support engineering excellence through documentation, testing, and raising the overall technical bar

Qualification

SwiftIOS DevelopmentSwiftUIMobile SecurityUIKitCombineAsync/AwaitAPI IntegrationAccessibilityCollaborationMentoringCommunication

Required

10+ years of professional iOS development experience, with a sustained track record of delivering high-impact mobile products at scale

Recognized expert in Swift and modern iOS development, with deep, hands-on mastery of SwiftUI, UIKit, Combine, SwiftData, async/await, and modern testing strategies—and the ability to set standards around their use

Extensive experience building, shipping, and evolving production iOS applications, including long-term ownership of mission-critical systems, core app architecture, or multiple major product surfaces

Proven ability to define, evolve, and steward scalable iOS architectures across teams, making principled tradeoffs around performance, reliability, maintainability, security, and developer experience

Influences and mentors engineers at multiple levels, shaping team-wide and org-wide best practices, and multiplying impact beyond individual contributions

Strong authority in mobile security and privacy, including encryption, authentication/authorization flows, key management, secure storage, and adherence to platform and regulatory best practices

Experience designing and maintaining globalized applications, including multi-language and region-specific requirements

Strategic mindset with a genuine passion for the craft of software engineering, continuous learning, and staying ahead of platform evolution

Clear, persuasive communicator who aligns stakeholders, drives decisions, and executes with urgency in ambiguous, high-impact environments