Sr. Engineer, Falcon Secure Access (Hybrid, ISR)

About the role

The Falcon Secure Access (FSA) team at CrowdStrike is expanding. As a Senior Software Engineer on our team, you will architect and deliver a next-generation secure access platform that converges Zero Trust Network Access with browser-native security. You'll build the core systems that enable users to seamlessly and securely access internal sites, private applications, and cloud resources directly from the browser - without legacy VPNs or remote desktops - while enforcing real-time protection against zero-day exploits, phishing, data exfiltration, and unauthorized access. This role sits at the intersection of network engineering and browser security: you'll design and implement advanced proxy communication, secure tunneling, and identity-aware routing - all operating at the browser's core to deliver holistic protection including DLP, insider threat detection, SaaS security, and continuous zero-trust verification.

Responsibilities

• Design and build ZTNA infrastructure - implement zero-trust access policies, secure tunneling, and identity-aware network routing that replaces traditional VPN architectures
• Develop advanced networking solutions - build and optimize proxy communication layers, WebSocket-based transport, and encrypted client-to-server channels that handle millions of concurrent connections
• Architect high-scale backend systems - design distributed microservices for policy enforcement, real-time threat detection, and access control at scale using Node.js / TypeScript
• Implement secure client-server communication - design highly secured agent-to-cloud architectures with certificate pinning, mutual TLS, and encrypted tunneling protocols
• Build browser-native security components - develop browser extensions and agents (Chrome, Edge, Firefox etc.) that enforce data protection, prevent data leakage, and provide granular visibility and control
• Own features end-to-end - from design through delivery, including deployment and monitoring
• Influence architecture and roadmap - play a key role in architectural decisions, building toward an efficient distributed zero-trust architecture
• Research and develop - drive new initiatives and POCs in zero-trust access domains and browser security
• Collaborate cross-functionally - work with security researchers, product, and platform teams across multiple locations to solve complex problems

Requirements

• 5+ years of industry experience building high-performance software products, preferably in cybersecurity
• Strong networking fundamentals - deep understanding of communication protocols (TCP/IP, TLS, WebSockets, HTTP/2), proxy architectures, and tunneling mechanisms
• Proven backend expertise - experience designing and developing high-scale microservices in Node.js / TypeScript / Python / GO / C++
• Hands-on experience with proxy and secure communication - WebSocket implementations, forward/reverse proxies, MITM inspection, and encrypted channel design
• Familiarity with encryption and secure communication - TLS/mTLS, certificate management, key exchange protocols, and secure session handling
• Experience with client-agent development - building complex, efficient client-side agents with reliable server communication
• Cloud platform experience - AWS, GCP, or Azure, with understanding of on-premises and hybrid infrastructure
• Strong research and debugging capabilities - ability to dive deep into protocol-level issues, browser internals, and network traces
• BS or MS in Computer Science or related engineering discipline
• Proactive problem-solver with attention to detail and a team-oriented mindset
• Bonus Points:
• Network security background - experience with network-layer security, firewalls, NAC, SD-WAN, or SASE architectures
• ZTNA / Zero Trust experience - familiarity with zero-trust principles, identity-based access, micro-segmentation, or existing ZTNA products
• EDR/endpoint security knowledge - experience integrating with endpoint detection and response platforms
• Browser intern

Benefits

Additional Information

As a global leader in cybersecurity, CrowdStrike protects the people, processes and technologies that drive modern organizations. Since 2011, our mission hasn't changed - we're here to stop breaches, and we've redefined modern security with the world's most advanced AI-native platform. We work on large scale distributed systems, processing almost 3 trillion events per day and this traffic is growing daily . Our customers span all industries, and they count on CrowdStrike to keep their businesses running, their communities safe and their lives moving forward. We're also a mission-driven company. We cultivate a culture that gives every CrowdStriker both the flexibility and autonomy to own their careers. We're always looking to add talented CrowdStrikers to the team who have limitless passion, a relentless focus on innovation and a fanatical commitment to our customers, our community and each other. Ready to join a mission that matters? The future of cybersecurity starts with you.

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