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Zscaler is seeking a Senior Staff Software Engineer specializing in C, networking, and dataplane architecture to join the Engineering Team in San Jose (hybrid, 3 days/week in office). This role reports to the Senior Director of Software Development Engineering.
You will design and implement high-performance data path features for load balancing and Layer 7 protocol handling, directly enhancing the scalability and security of Zscaler's global networking infrastructure. Working with deep C programming expertise and autonomous ownership, you will drive complex architectural projects from conception through large-scale deployment.
Key responsibilities include:
- Design and implement datapath features for load balancers, firewall rules, and L7 protocol implementations
- Apply expert knowledge of C programming, data structures, and algorithms to build high-performance systems
- Independently drive moderately complex projects from conception to deployment with full ownership
- Leverage deep expertise in networking protocols (DNS, HTTP, TCP/IP, SSL/TLS) and services
- Optimize networking and security applications using Unix/Linux operating systems knowledge
Zscaler is an AI-forward enterprise leveraging the world's largest security data lake to power its cloud-native Zero Trust Exchange platform. The company protects customers from cyberattacks and data loss by securely connecting users, devices, and applications across any location. The culture emphasizes impact over activity, constructive debate, customer obsession, collaboration, ownership, and accountability.
Minimum qualifications:
- 8+ years building large-scale commercial networking and security applications
- Proficiency in C or C++
- Strong foundational knowledge of data structures and algorithms
- Working experience with Linux, Unix, or similar operating systems
- BS or MS in Computer Science/Computer Engineering or equivalent
- Demonstrated curiosity and active exploration of AI tools with proven integration into workflows
Preferred qualifications:
- Exposure to AI-assisted software development tools and workflows
- Advanced knowledge of DNS, HTTP, TCP/IP, and SSL/TLS protocols
