Staff Mobile Engineer – iOS

Monstro•Denver, CO

1d•$167,000 - $222,000•Hybrid

About The Position

We’re looking for a Seasoned Staff level iOS Engineer to join our founding team and lead and evolve the native iOS experience for our financial platform. In this role, you’ll define the technical direction of our iOS architecture while remaining deeply hands-on, designing and delivering secure, high-performance systems that help users understand and manage their financial lives. You’ll partner closely with product, design, and backend teams to solve complex problems, scale the mobile platform, and set standards that ensure long-term quality, reliability, and developer velocity. Your work will have a lasting impact on the core experience our users depend on every day.

Requirements

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

Nice To Haves

Experience championing accessibility best practices and embedding inclusive design into iOS engineering standards is strongly preferred

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.