Senior IOS Engineer; Duo

The application window is expected to close on: 09/30/2026

Hybrid role located in Ann Arbor, Michigan

Duo Security, part of Cisco, makes security simple through cloud-delivered multi-factor authentication.

The Auth Experience Mobile team owns Duo Mobile for iOS and supporting services, serving more than four million people and processing well over 100 million pushes monthly.

Cross-platform engineers partner with product and design to build accessible, human-centered security experiences.

We value ownership, pragmatic decisions, craftsmanship, collaboration, and responsible AI-assisted development.

This role shapes trusted authentication at global scale.

Lead complex Duo Mobile iOS capabilities with Swift, Objective-C, core iOS SDKs, and SwiftUI.

Own outcomes from ambiguous requirements through architecture, implementation, tests, rollout, telemetry, and production support, including supporting services.

Raise quality through durable design, rigorous review, delivery tooling, and responsible AI-assisted development.

Partner across product, design, security, backend, and mobile to balance accessibility, reliability, user experience, and threat resistance.

Success means secure, maintainable outcomes at scale while mentoring teammates and shaping technical direction.

• Bachelor’s degree in computer science or a related technical field, 6+ years of software engineering or related experience.
• 3+ years of professional engineering experience shipping and supporting production native iOS apps.
• Swift experience and maintaining or integrating Objective-C.
• iOS SDK and SwiftUI or UIKit experience building performant, maintainable apps.
• Automated test design and production mobile release support experience.
• Mobile API or backend integration and client or service production diagnosis experience.
• Experience using AI coding assistants and other generative AI tools.

• Advanced SwiftUI or UIKit, Swift concurrency, application lifecycle, UI layout, or animation experience.
• Cybersecurity, authentication, cryptography, Keychain, secure data persistence, or advanced networking experience.
• Backend services, observability, analytics, staged rollout, or mobile incident response experience.
• Experience applying WCAG, ADA, or platform accessibility practices to inclusive mobile experiences.
• Technical leadership through architecture, code review, mentoring, testable design, or cross-team delivery.

At Cisco, we’re revolutionizing how data and infrastructure connect and protect organizations in the AI era – and beyond.

We’ve been innovating fearlessly for 40 years to create solutions that power how humans and technology work together across the physical and digital worlds.

These solutions provide customers with unparalleled security, visibility, and insights across the entire digital footprint.

Fueled by the depth and breadth of our technology, we experiment and create meaningful solutions.

Add to that our worldwide network of doers and experts, and you’ll see that the opportunities to grow and build are limitless.

We work as a team, collaborating with empathy to make really big things happen on a global scale.

Because our solutions are everywhere, our impact is everywhere.

We are Cisco, and our power starts with you.

The starting salary range posted for this position is $ to $ and reflects the projected salary range for new hires in this position in U.S. and/or Canada locations, not including incentive compensation*, equity, or benefits.

Individual pay is determined by the candidate's hiring location, market conditions, job-related skillset, experience, qualifications, education, certifications, and/or training.

The full salary range for certain locations is listed below. For locations not listed below, the recruiter can share more details about compensation for the role in your location during the hiring process.

• U.S. employees are offered benefits, subject to Cisco’s plan eligibility rules, which include medical, dental and vision insurance, a 401(k) plan with a Cisco matching…