Principal Engineer - Mac (Flutter/Dart)

McAfee•Frisco, TX

1d•Hybrid

About The Position

McAfee is seeking a highly skilled Principal Engineer with deep macOS 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

Requirements

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 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

Nice To Haves

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 and practices (e.g., Claude Code, AI-assisted development)

Responsibilities

Hands-on architecture and implementation (60%+ of your time) of high-performance Flutter applications for 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 Mac-native 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 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 macOS capabilities while maintaining a strong security posture