Senior Engineer, Falcon Seraphic Enterprise Browser (Hybrid, ISR)

About the role

CrowdStrike's Falcon Secure Access (FSA) team is expanding. As a Senior Software Engineer, you will architect and deliver a next-generation secure access platform that combines Zero Trust Network Access with browser-native security. You will build the core systems that let users securely access internal sites, private apps and cloud resources from the browser, without legacy VPNs or remote desktops, while protecting against zero-day exploits, phishing, data exfiltration and unauthorized access.

Key responsibilities

• Design and build ZTNA infrastructure: zero-trust access policies, secure tunneling and identity-aware routing that replaces traditional VPNs
• Build and optimize proxy communication layers, WebSocket-based transport and encrypted client-to-server channels handling millions of concurrent connections
• Design distributed microservices for policy enforcement, real-time threat detection and access control using Node.js / TypeScript
• Design secure agent-to-cloud architectures with certificate pinning, mutual TLS and encrypted tunneling
• Develop browser extensions and agents (Chrome, Edge, Firefox) that enforce data protection and prevent data leakage
• Own features end-to-end, including deployment and monitoring
• Influence architecture and roadmap, and lead new initiatives and POCs in zero-trust access and browser security
• Work with security researchers, product and platform teams across multiple locations

Required profile

• 5+ years of experience building high-performance software products, preferably in cybersecurity
• BS or MS in Computer Science or a related engineering discipline
• Proven backend expertise in high-scale microservices
• Proven experience using AI technologies to improve decision-making and efficiency
• Strong research and debugging skills, able to work at protocol level and within browser internals

Required skills

• Networking fundamentals: TCP/IP, TLS, WebSockets, HTTP/2, proxy architectures and tunneling
• Backend: Node.js / TypeScript / Python / Go / C++
• Proxy and secure communication: WebSocket, forward/reverse proxies, MITM inspection, TLS/mTLS, certificate management
• Client-agent development and cloud platforms (AWS, GCP or Azure)
• Bonus: network security, ZTNA, EDR, browser internals, OS networking, Kubernetes

What we offer

• Market-leading compensation and equity awards
• Wellness programs, paid vacation and parental/adoption leave
• Professional development and employee networks
• Vibrant office culture and Great Place to Work certification