# Subin Cyriac Mathew

> Staff 2 Software Engineer - NSX Datapath ; Senior Member IEEE

Location: San Jose, California, United States
Profile: https://flows.cv/subincyriacmathew

## Work Experience
### Staff 2 Software Engineer @ VMware
Jan 2021 – Present | Palo Alto, California, United States

### Staff Engineer @ VMware
Jan 2018 – Jan 2021 | Palo Alto
Primary author of more than 3 dozen patents filed by VMware.

Overlay datapath Lead for NSX platform.
Architected, designed, developed and delivered Distributed Overlay Multicast Routing.(https://blogs.vmware.com/networkvirtualization/2018/08/whats-new-in-nsx-642.html/)

### Senior Member of the Technical Staff @ VMware
Jan 2017 – Jan 2018 | Palo Alto
Overlay Datapath Engineer for the NSX platform. Designed and developed Controller Disconnected Mode feature for NSX.

### Member Of Technical Staff @ VMware
Jan 2016 – Jan 2016 | Palo Alto
Member of Technical Staff working on NSX datapath team in VMware's Networking and Security Business Unit.
Designed and developed MAC Learning capability for DVS, available as a VIB for external download(https://labs.vmware.com/flings/learnswitch)

### Graduate Student @ Stony Brook University
Jan 2014 – Jan 2015 | Greater New York City Area
Taking a break from Industry to pursue graduate Study(MS in Computer Science).
I will be concentrating on Operating Systems and Networking.

### Intern @ VMware
Jan 2015 – Jan 2015 | Palo Alto, California Area
Summer Intern at VMware Networking and Security Business Unit(NSBU).
Worked on vSwitch MAC Learning Extensions for High Performance Forwarding for Nested-ESX workloads.

### Senior System Specialist @ Hewlett-Packard Networking
Jan 2010 – Jan 2014
System Specialist in the Bridging Protocols/L2 Infrastructure New Projects Initiative (NPI) team.

Projects Undertaken
================
- Infrastructure support of VxLAN for Unified Wired-Wireless SDN Controller.
- Contributor to the SDN Sentinel Service Insertion project(Network Protector) to be made available on HP OpenFlow enabled switches. 
- Design and development of Smartlinks for HP E-series switches, which is a link redundancy and      VLAN load balancing feature similar to Cisco Flexlinks.
- Design and development of Uplink Failure Detection for Dynamic LACP aggregates.
- Design and development of LLDP/CDP pass-through support for Enterprise Mobility Controller.
- Design and development of support for sflow IPv6 Collector.
- Design and Development of CDP transmission capability to support voice-vlan discovery of Cisco IP-phones.
- Comfortable with various bridging protocols like Loop-Protect, Uplink Failure Detection,  Unidirectional Link Detection, LLDP, LLDP-PoE, LLDP-MED, CDP, SFLOW, MSTP, PVST, GVRP, LACP.

### Member Technical Staff @ Juniper Networks
Jan 2009 – Jan 2010
Member Technical Staff (MTS3) in the JUNOS core kernel group responsible for providing the infrastructure for applications running on the Juniper Routing Engine. 

Projects Undertaken:
i)    Kernel Branch trace: 
This patented project was aimed at obtaining the branches taken by a system call, which helps in identifying why a system call failed.
ii)	Developed a tool for Hardware Performance Monitoring and profiling for Juniper’s next generation 16 quad core PPC64 System on Chip.
iii) Ported the hwpmc code from FreeBSD 7.3 to JuNOS.

### System Software Engineer @ Hewlett-Packard
Jan 2006 – Jan 2009
Defect fixing and enhancing the Network stack of Tru64 Unix (formerly Digital Unix) Operating System. Worked on the STREAMS based Network stack of HP-UX Operating system as well.

Areas of Work
i) TCP/IP, UDP, ARP, Routing, Multicast (IGMP)
ii) Network Drivers (Alteon and Broadcom cards) 
iii) SMP Unix kernel Internals

Enhancement projects
i) Kernel level Network Bandwidth Monitoring of interfaces
ii) Enhancement of Redundant array of Independent Network Adapters(NetRain)
Integrated the link state of interface cards as a variable into the state machine in determining which card to fail over.

Publications/Patents
Defensive publication of "Server Initiated Method To Deploy Bootable Image To Non-booted Clients"

### Software Engineer @ NetDevices
Jan 2005 – Jan 2006 | Bangalore
Netdevices was a Computer Networking startup developing edge routers for Small and Medium Business (SMB) market.

Project Details:
Developed a framework for supporting any third-party applications on a blade on the SG-8 router itself.  Proof of Concept was presented by hosting DNS server, web-caching and AAA server on the router. This project was the precursor to the popular SDK APIs developed at Juniper Networks by members of my team.


## Education
### Master’s Degree in Computer Science
Stony Brook University

### Bachelor of Engineering (B.E.) in Computer Science
B. M. S. College of Engineering


## Contact & Social
- LinkedIn: https://linkedin.com/in/scmathew

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Source: https://flows.cv/subincyriacmathew
JSON Resume: https://flows.cv/subincyriacmathew/resume.json
Last updated: 2026-04-12