Senior Software Engineer, Native Applications and Networking at Securecodewarrior

Join Secure Code Warrior to create a safer digital landscape by assisting companies to secure their software through developer-led practices! Secure Code Warrior’s mission is to establish new standards for coding that transform the ways software is created. We do this by providing the world’s leading agile learning platform that delivers the most effective secure coding solution for developers to learn, apply, and retain software security principles.  More than 600 enterprises trust Secure Code Warrior to implement agile learning security programs, build safer software, and create a culture of developer-driven security.  We are a venture-backed company with offices in Australia, the United States, Belgium, Iceland, and the United Kingdom. Core Responsibilities Architectural Leadership & Native Development • Platform Implementation: Own the development and evolution of native components, including macOS System Extensions (NetworkExtension framework in Swift) and Windows Filtering Platform (WFP) callout drivers (C++/C#). • The Go Engine: Lead the optimization of our high-performance networking engine written in Go, ensuring it scales effectively and maintains reliable interoperability with platform-specific system hooks via cgo. • Secure IPC & Orchestration: Design, implement, and harden secure Interprocess Communication (IPC) mechanisms (XPC on macOS; ALPC, Named Pipes, or gRPC on Windows) to bridge privileged system services with user-space applications. Performance, Reliability & Security • System Health: Take accountability for the stability of native daemons and background services. You will diagnose and resolve complex OS-level challenges, including sleep/wake reconnection logic, DNS interception conflicts, and VPN kill-switch enforcement. • Native Optimization: Continuously monitor and improve packet path bottlenecks, CPU usage, and memory management to ensure a "zero-impact" user experience for the developer. • Security Standards: Ensure all native code meets SCW’s strict standards for memory safety, concurrency, and cryptographic integrity. Engineering Excellence & Lifecycle • Release Ownership: Manage the end-to-end technical requirements for native platform releases, including Windows EV Code Signing, Apple Notarization, and Entitlements. • Roadmap Contribution: Partner with Product and Security teams to translate customer needs into technical roadmaps for our native application suite. • Mentorship: Act as a Subject Matter Expert (SME) for the wider engineering organization, conducting code reviews and mentoring engineers in systems programming and native application architecture. Experience & Skills Technical Proficiency • Systems & Native Programming: Deep, professional experience with system-level development and native application architecture on Windows and/or macOS. • Polyglot Engineering: Strong proficiency in Go, Swift, and C++ or C#. • Framework Expertise: Extensive hands-on experience with the macOS NetworkExtension framework and the Windows Filtering Platform (WFP). • Networking Protocols: Expert-level understanding of TCP/IP, DNS, TLS, and low-level packet manipulation. • Native Tooling: Skilled in kernel/system debugging, performance profiling (Xcode Instruments, WPR/WPA), and memory leak detection. Professional Attributes • Product Mindset: You don't just write code; you build native products that solve real-world security problems for developers. • Operational Excellence: Experience maintaining native software in production-grade security or networking environments. • Collaboration: Ability to work cross-functionally with DevOps, Security, and Product teams in an agile, remote-first environment. Why Join Secure Code Warrior? • Deep Impact: Your work directly impacts the security posture of the world’s leading software organizations. • Technical Challenge: We solve "hard" problems at the OS level—this isn't just another CRUD app; it's a high-performance native suite. • Growth: As a permanent team member, you will have a clear path for career progression, whether through technical leadership or architectural specialization. • Flexibility: Remote-first culture with a focus on results rather than hours logged. Let’s talk about benefits: * Unlimited Paid-time-off; * Remote first culture, with offices in Sydney if you wish to work more hybrid; * Paid Parental Leave; * Employee Share Option Plan; * Volunteer Leave and Employee Assistance Programs; and * Home Office Reimbursement Secure Code Warrior is an Equal Opportunity Employer, embracing diversity in all its forms. We value every individual's unique background and perspective, as it enriches our culture and fuels innovation. We encourage people of all races, ethnicities, ages, religions, abilities, genders, and sexual orientations to join us and contribute authentically to our shared vision.