HARISH HOLENARSIPURA VISWANATHA
San Jose,CA
Summary
Principal Software Engineer at Palo Alto Networks with expertise in cloud security and network architecture. Led development of Cloud NGFW, significantly improving customer traffic flow and security. Proficient in C, Python, and Kubernetes management, delivering innovative solutions in fast-paced environments.
Overview
11
11
years of professional experience
Work History
Principal Software Engineer
Palo Alto Networks
Santa Clara
11.2023 - Current
- Collaborated with cross-functional teams to leverage Cloud NGFW to secure AI traffic and container workloads on AWS and Azure.
- Developed Cloud NGFW as an egress NAT gateway, reducing overall cloud NAT gateway costs.
- Mentored junior engineers in best coding practices and design principles.
Senior Staff Software Engineer
Palo Alto Networks
Santa Clara
11.2021 - 10.2023
- Involved in Prisma SASE (Secure access service edge) architecture of separating security plane (Prisma access fabric) and networking plane (cloudgenix) on GCP cloud. Project involved handling security plane interaction with networking plane implementing implicit Geneve tunnel with encrypted customer traffic in the inner flow to provide L7 security and threat inspection.
- Provided Aggregated Ethernet support for VM-Series next gen firewall platform on KVM and VMware ESXi.
- Developed an application plugin to monitor Kubernetes pods and handle the licensing architecture of CN-Series Next Gen Firewall.
- Developed an Init container to generate certificates signed by Kubernetes cluster CA for secure IPSEC (strongswan) communication between management plane and data plane pods of CN-Series Firewall.
Staff Software Engineer
Palo Alto Networks
Santa Clara
02.2019 - 10.2021
- Implemented SR-IOV access mode functionality by modifying VF kernel drivers and DPDK PMD for stripping VLAN tag traffic to VM-Series FW. (KVM and VMware ESXi).
- Involved in platform bring up of CN-Series (Container Firewall) to provide inline L7 security to customer inbound and outbound across all public clouds (EKS, GKE and AKS)
Software Engineering Intern
A10 Networks
San Jose
05.2018 - 12.2018
- Designed the stateful GTP traffic generator to act as both service gateway and packet gateway to test the GTP firewall.
- Stored the session (tunnel) related information in an efficient data structure to enable fast lookups for generating user traffic
Embedded Software Engineer
Robert Bosch
Bangalore
08.2014 - 12.2016
- Developed and tested Electronic Control Units (ECU) pertaining to Anti-Lock braking system (ABS) and other safety related functions in C for OEMs like Toyota and Daihatsu.
Education
Master of Science - Electrical Engineering (Computer Networks)
University of Southern California
Los Angeles12.2018
Bachelor of Engineering - Electrical & Electronics Engineering
Dayananda Sagar College of Engineering
Bangalore06.2014
Skills
- C
- C
- Python
- Socket programming
- Multithreaded programming
- Data Structures
- TCP/IP
- L2-L7 protocols
- Intel DPDK
- Linux network stack
- Cloud security
- Network architecture
- Kubernetes management
- System design
Timeline
Principal Software Engineer
Palo Alto Networks
11.2023 - Current
Senior Staff Software Engineer
Palo Alto Networks
11.2021 - 10.2023
Staff Software Engineer
Palo Alto Networks
02.2019 - 10.2021
Software Engineering Intern
A10 Networks
05.2018 - 12.2018
Embedded Software Engineer
Robert Bosch
08.2014 - 12.2016
Master of Science - Electrical Engineering (Computer Networks)
University of Southern California
Bachelor of Engineering - Electrical & Electronics Engineering
Dayananda Sagar College of Engineering
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