Desktop Applications Engineer, Duo Desktop

Cisco; City of Syracuse (NY); On-site; USD 138,000 - 198,000; Full time

Job summary

Duo Security, part of Cisco, seeks a Desktop Software Engineer to build cross‑platform client features for macOS and Windows, collaborating with product and security teams to deliver reliable identity solutions.

You will write tests, review code, debug across environments, and help mentor teammates while advancing security-focused architecture and AI-assisted tooling.

Qualifications

• Bachelors +5y, or Masters +3y, or PhD +0y, or equivalent experience.
• 3+ years native macOS (Swift/SwiftUI) or Windows (C#/WPF/WinForms) desktop experience.
• 3+ years of professional experience developing native desktop applications for macOS using Swift or for Windows using C#/.NET.
• Experience with REST APIs and HTTP integration.

Responsibilities

• Build client features across macOS and Windows platforms.
• Write clean, testable code with unit and UI tests; perform code reviews.
• Troubleshoot and fix bugs in development and production; participate in postmortems.
• Collaborate with backend, security, and product teams to integrate platform capabilities.
• May lead medium-complexity features from design through completion.
• Share knowledge with teammates and mentor junior engineers; model responsible AI tooling usage.
• Stay current on platform frameworks and security capabilities; propose technical improvements.
• Work independently with minimal guidance to determine technical approaches.

Skills

Swift

SwiftUI

C#

WPF

WinForms

macOS desktop

REST APIs

HTTP integration

Education

Bachelor's degree

Master's degree

PhD

Tools

Xcode

Visual Studio

Job description

Meet the Team

Duo Security, part of Cisco, makes security simple through cloud-delivered identity and access solutions. Within the Identity Foundations organization, the Duo Desktop team builds endpoint capabilities that provide trusted device identity and security-posture signals, including experiences delivered through Cisco Identity in Cloud Control. Our engineers partner with product, design, and platform teams to create secure, reliable, high-performance identity experiences that scale across enterprise environments. We value ownership, pragmatic decision-making, craftsmanship, collaboration, and responsible AI-assisted development. This role will help shape how device trust is established and used across Cisco's Identity Fabric and broader security portfolio.

Your Impact

• Build client features and components that run across macOS and Windows platforms.
• Write clean, testable code with unit and UI tests; perform code reviews for team members.
• Troubleshoot and fix bugs in development and production environments; participate in postmortems.
• Collaborate with backend engineers, security, and product teams to integrate platform capabilities.
• May lead medium-complexity features from design through completion.
• Share knowledge with teammates and help junior engineers grow; model responsible use of AI tooling.
• Stay current on platform frameworks and security capabilities; bring ideas for technical improvement.
• Work independently with minimal guidance to determine technical approaches.

Minimum Qualifications

• Bachelors + 5 years of related experience, or Masters + 3 years of related experience, or PhD + 0 years of related experience, or equivalent related work experience
• 3+ years of professional experience developing native desktop applications for macOS using Swift programming language and SwiftUI AND/OR Windows programming in C# and .NET frameworks (WinForms/WPF)
• Experience building responsive user interfaces (SwiftUI or UIKit) and debugging UI issues (Xcode or other tools?)
• Experience with REST APIs and HTTP integration

Preferred Qualifications

• Experience with authentication, identity management systems, zero-trust security principles and building for security-sensitive or regulated environments.
• Experience with hardware security features (TPM, Secure Enclave, or similar).
• Cross-platform development experience (macOS + Windows) , performance optimization, and debugging of native applications
• Open-source contributions or GitHub portfolio
• Experience with secure credential storage APIs (Keychain, Credential Manager)
• Mentoring , code reviews, UI and Unit Testing experience
• Experience with AI coding assistants or modern development tooling

Why Cisco?

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.

Message to applicants applying to work in the U.S. and/or Canada:

The starting salary range posted for this position is $138,100.00 to $198,200.00 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 contribution, paid parental leave, short and long-term disability coverage, and basic life insurance. Please see the Cisco careers site to discover more benefits and perks. Employees may be eligible to receive grants of Cisco restricted stock units, which vest following continued employment with Cisco for defined periods of time.

U.S. employees are eligible for paid time away as described below, subject to Cisco's policies: 10 paid holidays per full calendar year, plus 1 floating holiday for non-exempt employees 1 paid day off for emplo