Cisco

Senior IOS Engineer (Duo)

Cisco$139K — $203K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's degree in computer science or related field, 6+ years of software engineering experience.
  • 3+ years of experience shipping production native iOS apps.
  • Proficient in Swift, with experience in Objective-C maintenance or integration.
  • Experience with iOS SDK, SwiftUI, and UIKit in building performant apps.
  • Proven skills in automated test design and mobile release support.
  • Familiarity with Mobile API or backend integration and production diagnosis.
  • Experience using AI coding assistants and generative AI tools.

Responsibilities

  • Lead development of iOS capabilities for Duo Mobile using Swift and Objective-C.
  • Drive product outcomes from undefined requirements through complete architecture and implementation.
  • Enhance product quality with durable design and rigorous code reviews.
  • Collaborate with cross-functional teams to prioritize usability and security.
  • Ensure reliable production support and scaling for mobile services.
  • Provide mentorship to teammates and influence technical direction.

Benefits

  • Hybrid work model with flexibility between in-office and remote work.
  • Opportunity to impact security solutions for over four million users.
  • Work in a collaborative environment with a focus on craftsmanship and ownership.
  • Mentorship opportunities to develop team skills and technical direction.
  • Access to the latest technologies, including AI-assisted development tools.
Full Job Description
The application window is expected to close on: 09/30/2026Hybrid role located in Ann Arbor, Michigan

Meet the Team


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.

Your Impact

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.

Minimum Qualifications
  • 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.

Preferred Qualifications
  • 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.

About Cisco

Cisco Careers

Join the vibrant team at Cisco, a global leader in networking and cybersecurity solutions, where innovation and leadership thrive. Cisco offers a plethora of job opportunities that cater to a range of skills and experiences, making it an ideal place for both seasoned professionals and those seeking an internship to jumpstart their career. Work You’ll Do At Cisco, you’ll be part of a culture that values diversity, leadership, and professional growth. Engage in work that matters with a team that combines technology, creativity, and the power of human connection to redefine networking. Cisco’s commitment to innovation isn’t just about technology, but also about transforming the way we work and collaborate. Cisco’s employment philosophy supports career advancement and nurtures a leadership pipeline that is equipped with diversity training and opportunities for growth. Whether you’re applying your skills to drive our latest innovations or using our vast networking capabilities to solve complex problems, at Cisco, every role is impactful. Join Our Dynamic Team Explore job opportunities in areas ranging from engineering to marketing, sales to cybersecurity. Cisco is hiring individuals who are passionate, curious, and ready to drive change. Positions at Cisco offer competitive benefits, a supportive culture, and the chance to work with cutting-edge technology. Internship Programs Kickstart your career with a Cisco internship. Gain invaluable industry experience, enhance your resume, and build professional networks that last a lifetime. Our internships provide hands-on experience and the chance to work on projects that matter. Leadership and Development Cisco is committed to fostering leadership skills and providing employees with the training needed to succeed. Our leadership programs help you develop new skills, manage teams effectively, and lead with confidence. Cisco’s commitment to professional development ensures that your career path is as dynamic as our technologies. Benefits and Culture Cisco understands the importance of a balanced life. Our benefits package is designed to ensure that our team members are healthy, happy, and secure. At Cisco, you’ll find a supportive culture that encourages open communication, teamwork, and mutual respect. Stay Connected Join Cisco’s Talent Network Stay informed about new positions that match your skills and interests. At Cisco, we value the curiosity and unique perspectives of our team members. Subscribe to receive personalized job alerts and insider tips directly from our hiring managers. Explore Cisco Jobs Ready to advance your career at Cisco? Search open positions, prepare your resume, and get ready for an interview that could lead to your next big opportunity. At Cisco, we’re not just filling positions—we’re investing in leaders. Keep Up to Date Stay ahead with career tips, insider perspectives, and industry-leading insights you can put to use today—all from the people who work here. READ CAREERS BLOG Job Alert Emails Customize your subscription to receive job alerts, the latest news, and insider tips tailored to your preferences. Discover the exciting and rewarding career opportunities that await you at Cisco.
Learn more about Cisco
Size
79,500 employees
Market Cap
$194.5 billion
Industry
Net Income
$10.1 billion
Founded
2014
5 Year Trend
+1.4%
Revenue
$48 billion
NASDAQ

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