Principal Engineer, Flutter

Role Summary

McAfee is seeking a highly skilled Principal Engineer with deep desktop (Mac/Windows) and Flutter/Dart expertise to help build trusted, high performance security products that protect millions of users and families worldwide. In this hands on technical leadership role, you will architect, implement, and optimize Mac native experiences using Flutter, owning key aspects of our desktop strategy while shaping the long term engineering vision.

As a Principal Engineer, you will lead critical architectural decisions, write production level code, and ensure our Flutter desktop applications meet the highest standards of security, reliability, performance, and user experience. You’ll collaborate closely with security engineers, designers, and product partners to transform complex technical and security concepts into intuitive, high quality customer experiences. If you’re energized by impactful, customer centric engineering and want to help shape the future of McAfee’s desktop products, we’d love to meet you.

This is a Hybrid position located in Frisco, TX. You will be required to be on-site on an as-needed basis; when you are not working on-site, you will work from your home office. You must be within commutable distance of Frisco, TX. We are not offering relocation assistance at this time.

• Hands-on architecture and implementation (60%+ of your time) of high-performance Flutter applications for Windows and macOS used by millions of customers
• Write production code and lead critical technical implementations across the Flutter desktop stack
• Define and own Flutter desktop architectural standards with a focus on security, reliability, and long-term maintainability
• Ensure native desktop experiences across windowing, menus, keyboard shortcuts, accessibility, animations, and system integrations
• Partner with security engineers, designers, and product managers to translate complex security concepts into intuitive user experiences
• Design and implement robust abstractions for secure platform integrations using Flutter platform channels and native Windows/macOS APIs
• Drive best practices around state management, modularization, testing, and CI/CD
• Lead performance tuning efforts (startup time, memory usage, rendering efficiency)
• Mentor senior engineers through design reviews, code reviews, and technical guidance
• Set technical direction and architectural vision for the team
• Evaluate and adopt new Flutter and Windows/macOS capabilities while maintaining a strong security posture

• You have 10+ years of software engineering experience with deep expertise in Flutter and Dart on any platform
• Proven track record of hands-on implementation and architecting production Flutter applications at scale, ideally on desktop
• Strong understanding of Windows and macOS application architecture and UX conventions
• Extensive experience integrating Flutter with native macOS code (Swift / Objective-C) via platform channels
• Solid background in system design, with an emphasis on secure, testable, and resilient architectures
• Experience with Flutter state management solutions (e.g., Riverpod, Bloc, Provider)
• Demonstrated ability to mentor senior engineers and set technical direction for teams
• Strong collaboration and communication skills, with the ability to influence across teams
• Passion for delivering polished, trustworthy user experiences through hands-on implementation
• Experience building or integrating security, privacy, or system-level software
• Familiarity with Apple Human Interface Guidelines and macOS accessibility standards
• Experience shipping apps at large scale with millions of users
• Knowledge of secure coding practices, threat modeling, or defense-in-depth
• Familiarity with AI-based coding tools…