Staff SDET, CFW

About the Role

We are looking for a Staff SDET Engineer to join our Cloud Firewall engineering team, responsible for validating large-scale cloud-delivered firewall services operating across globally distributed infrastructure.

The Cloud Firewall platform processes enterprise network traffic across multiple protocols and services, providing capabilities such as L3–L7 policy enforcement, traffic classification, DNS security, DLP inspection, service chaining, and microservice-based traffic processing across global points of presence.

This role is ideal for engineers who enjoy working on deep networking problems, distributed systems validation, large-scale traffic testing, and automation-driven quality engineering.

As a Staff engineer, you will help define how complex security services are validated, scaled, and operated reliably in production environments.

What You Will Do

System Validation and Test Strategy

• Design and execute test strategies for Cloud Firewall services and traffic inspection pipelines
• Perform end-to-end validation across multi-node and multi-region deployments
• Validate L3–L7 policy enforcement across different protocols and enterprise traffic patterns
• Verify correctness of policy evaluation, rule processing, and security service chaining workflows
• Ensure high availability, failover, and resiliency across distributed deployments

Traffic Processing and Platform Validation

• Validate traffic classification, session management, and packet processing workflows across Cloud Firewall services
• Ensure correct handling of multi-protocol enterprise traffic flows and application identification
• Validate interactions across microservice-based dataplane processing pipelines

Automation and Testing Frameworks

• Build and evolve automation frameworks for functional, regression, and system-level testing
• Develop automated validation suites using Python
• Integrate automated validation with CI/CD and release pipelines
• Develop tooling to simulate real-world enterprise traffic patterns and system failure scenarios

Scale and Performance Validation

• Design and execute large-scale traffic testing across distributed firewall deployments
• Simulate enterprise workloads across globally distributed POP environments
• Measure and analyze throughput, latency, connection scale, and system resource utilization
• Identify performance bottlenecks and collaborate with engineering teams to improve system performance

Debugging and System Diagnostics

• Perform deep debugging using tcpdump, Wireshark, logs, metrics, and packet captures
• Investigate complex issues involving traffic processing, policy enforcement, and microservice interactions
• Participate in root cause analysis for production incidents and customer escalations

AI-Driven Testing

• Apply AI-assisted testing techniques to improve coverage and defect detection
• Use AI for intelligent traffic simulation, anomaly detection, and automated analysis of system telemetry
• Improve debugging and test efficiency through AI-driven diagnostics

Staff-Level Responsibilities

• Define and influence the validation architecture and quality strategy for major Cloud Firewall components
• Drive testing standards and automation practices across engineering teams
• Partner with engineering teams during design and architecture reviews to ensure testability and reliability
• Lead complex system debugging and validation efforts for critical platform features
• Mentor engineers and help raise the technical bar for quality engineering across the organization.

Required Skills and Experience

Networking Fundamentals

• Strong understanding of TCP/IP networking fundamentals
• Knowledge of network traffic flows, routing, NAT, and policy enforcement
• Experience with packet capture and network debugging tool.

Automation and Programming

• Strong programming experience in Python
• Experience building or extending automation frameworks
• Familiarity with REST API testing and service validation
• Comfortable working in Linux environments

Performance and Systems

• Experience with network traffic generation or performance testing tools
• Understanding of network performance metrics and capacity testing
• Ability to design large-scale realistic test scenarios

Infrastructure and Distributed Systems

• Experience testing cloud or distributed infrastructure systems
• Familiarity with microservices architectures and containerized platforms
• Experience with observability and monitoring tools

Qualifications

• Bachelor's degree in Computer Science, Engineering, or equivalent experience
• 10+ years of experience in QA, SDET, or distributed systems testing roles
• Experience testing network security platforms, firewall systems, or distributed networking services

Nice to Have

• Experience with cloud firewall or security gateway platforms
• Experience validating large-scale distributed dataplane systems
• Experience testing enterprise networking or security infrastructure
• Experience applying AI techniques to testing or system diagnostics

What We Look For

• Strong debugging and analytical skills
• Automation-first mindset
• Ability to own validation areas end-to-end
• Comfort working in fast-paced distributed systems environments
• Strong communication and collaboration skills

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