What are the responsibilities and job description for the Senior Mobile Engineer - iOS position at Monstro?
About MonstroMonstro is an AI-native fintech platform reimagining how people and institutions manage money. We're building a modern foundation for financial decision-making—combining intelligence, automation, and elegant design to help users make smarter choices with confidence.Our team includes experienced builders from leading fintech, wealth management, and technology companies, united by a shared goal: to create a category-defining product that transforms how financial insight is delivered and acted on.About the RoleWe're looking for a Senior iOS Engineer to build the native iOS experience for our financial platform. You'll design and deliver secure, high-performance features that help users understand and manage their financial lives, while laying the foundation for a long-term mobile architecture. This is a hands-on, collaborative role where your work will directly shape the core experience our users rely on every day.Why This Role MattersMonstro's mobile app is central to how users interact with their financial universe. Your work will define the quality, responsiveness, and trustworthiness of that experience. The systems you build must be secure, elegant, and resilient—handling sensitive financial data at scale while remaining intuitive and reliable.What You'll DoiOS Application DevelopmentDesign, 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.Architecture & ScalabilityEstablish 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.Integration & Data HandlingIntegrate 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.Security & ComplianceImplement 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.Collaboration & ExecutionPartner 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.What Success Looks LikeThe iOS experience is fast, secure, and delivers exceptional clarity for users managing complex financial information.The mobile codebase is maintainable and scalable, supporting rapid iteration without sacrificing quality.Architecture patterns are consistent, well-documented, and trusted across the engineering org.The app consistently meets performance and security standards suitable for a regulated financial environment.You've elevated the craft, practices, and expectations of mobile engineering at Monstro through thoughtful execution and collaboration.What We're Looking For7-10 years of professional iOS development experienceExpert-level proficiency in Swift and modern iOS development, with deep hands-on experience across SwiftUI, UIKit, Combine, SwiftData, async/await, and modern testing practices5 years of experience building, shipping, and maintaining production iOS applications, including ownership of large features or full apps in live environmentsProven ability to design and evolve scalable iOS architectures, making thoughtful tradeoffs around performance, maintainability, and developer experience Ability to lead by example, conduct high-quality code reviews, mentor engineers, and influence best practices across the teamExperience integrating with RESTful APIs and managing complex data flowsStrong expertise in secure data handling, including encryption, authentication/authorization flows, key management, and platform security best practicesSkilled in debugging, performance tuning, and optimizing for real-world usageExperience with multi-language supportTechnical ownership mindset, driving quality, reliability, and security across the iOS codebase and release lifecycleExperienced with CI/CD pipelines for iOS, including Apple's CI/CD pipelineGenuine passion for the craft of building software and curiosity to keep learningClear communicator who takes ownership and moves with urgencyExperience with accessibility best practices is preferred Why Monstro?Ownership & Impact: Shape the future of AI-powered finance—building a category-defining product used by consumers and institutions around the world.Elite Team: Join a leadership team with a track record of scaling companies from early stage to major exits.Principles-Driven Culture: Work in a culture that values speed, ownership, and impact—what most companies achieve in 90 days, we do in 45.Comprehensive Compensation Package: Competitive salary, performance bonuses, equity, and robust benefits package, including paid health, vision, dental, and disability coverage.Note: This role will be hybrid for those in the NYC metro or remote for those in the Denver metro area (but with the expectation of periodic in-person collaboration)Compensation Range (New York City): $177,000 – $218,000Compensation Range (Denver Metro): $157,000 – $192,000*The posted range reflects the base salary for this role across the market ranges for each location. Final compensation will depend on a variety of factors, including experience, skills, internal leveling, and market conditions, and will be offered within the stated range in accordance with applicable pay transparency laws.Ready to Build With Us?If you're excited to contribute to a high-bar team building something meaningful, we love to hear from you!
Salary : $157,000 - $192,000