Staff SDET, CFW

Netskope•Santa Clara, CA

About The Position

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.

Requirements

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.
Strong programming experience in Python
Experience building or extending automation frameworks
Familiarity with REST API testing and service validation
Comfortable working in Linux environments
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
Experience testing cloud or distributed infrastructure systems
Familiarity with microservices architectures and containerized platforms
Experience with observability and monitoring tools
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 Haves

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

Responsibilities

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
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
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
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
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
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
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.