MacOS / Networking Software Engineer

About the role

Proofpoint is a global leader in human- and agent-centric cybersecurity. We protect how people, data, and AI agents connect across email, cloud, and collaboration tools. Over 80 of the Fortune 100, 10,000 large enterprises, and millions of smaller organizations trust Proofpoint to stop threats, prevent data loss, and build resilience across their people and AI workflows. Our mission is simple: safeguard the digital world and empower people to work securely and confidently. Join us in our pursuit to defend data and protect people. How We Work: At Proofpoint you'll be part of a global team that breaks barriers to redefine cybersecurity guided by our BRAVE core values: Bold in how we dream and innovate Responsive to feedback, challenges and opportunities Accountable for results and best in class outcomes Visionary in future focused problem-solving Exceptional in execution and impact We are looking for a highly experienced Principal Software Engineer to lead the design and development of a network agent/driver for the macOS environment. This is a hands-on, high-impact role requiring deep technical expertise in networking, system architecture, and macOS development. You will play a key role in shaping core components, influencing technical direction, and delivering robust, high-performance solutions.