SUMMARY:

• Over 10 years of vast experience in designing, developing, maintaining and testing Embedded Networking Software in technologies like Content Aware Application Delivery Controllers, Server Load Balancers, Network Virtualization, Cloud Networking, High Availability and Firewall.
• Vast experience in L2 - L7 Network Application Switches technologies.
• Expert and vast experience in C Language and debugging skills.
• Exposure to Python Language.
• Experience in Linux OS and VxWorks (RTOS).
• Exposure to cloud networking (Openstack - Neutron) and Network Function Virtualization (NFV)
• Experience in OS internals, Network programming & Multi-threaded/Core environment.
• Experience in technically leading subordinates, compiling and reviewing design and test documentation.

TECHNICAL SKILLS:

Operating Systems: Linux OS / Alteon OS / VxWorks

Cloud OS: Openstack & VMware

OS Internals: System Software, IPC & Multithreading

Languages: C / C++, Bash, Python, Core Java(Exposure)

Application Protocols: HTTP, HTTPs, FTP, TFTP, DNS & DHCP & SNMP

Network/IP Protocols: TCP/IPv4/6 protocol suite

High Availability: VRRP (v4/v6)

Routing protocols: OSPF

L2 Protocols:: STP, VLAN, TRUNK, LACP, Switching/Forwarding etc;

Authentication Protocols: RADIUS & TACACS+

Development tools: GDB, Ctags, Cscope, Source insight

Development Methodology: Agile, Continuous Integration

Testing tools: Spirent Smartbits Avalanche, wireshark, tcpdump, iperffragroute, shmultool

Version Control: Git, Clearcase, CVS & Rational Clearquest

Network Products: Server Load Balancers: Radware Virtualized Switch (ADC-VX), 54124408, 4416, 6408 and Nortel Application Switches (NAS)

WORK EXPERIENCE:

Confidential, Santa Clara, CA

Technologies used: C / C++ & Python

Responsibilities:

• Separation of L2 functionality from L3/L4 and L7 services which runs in vADC
• Traffic distributor - An intelligent layer which distributes traffic across many virtual ADCs residing on single hardware platform.
• Updating L2 configuration and dynamic tables (STG, VLAN, ports) to vADCs
• High Availability (VRRP- v4/v6) - Active-Standby, Hot-Standby and Active-Active
• State-full/Service based fail-over by session mirroring on virtualized as well as standalone platforms
• Virtual Matrix Architecture (VMA) - A proprietary solution of Alteon switches to bind a sessions to specific switch processor (SP).
• L2 to L7 Network Address Translation features on traffics like ICMP, UDP, TCP & HTTP
• L7 based pattern match filtering for IPv6 traffic
• WAN link & Firewall load balancing for IPv6 traffic
• Return to sender (RTS) and Reverse session
• OSPF path cost adjustment based on VRRP states
• Bug fixing and reviewing across the projects undertaken
• Developing, Enhancing and sustaining the product features.
• Coordinating with onsite managers to collect requirements for handling new features.
• Technically lead and advice junior team members.
• Handling customer cases and tier team's requests.
• Prepare and review design and test plan documents.
• Creating setups and perform unit testing.
• Involving in troubleshooting, debugging and performance tuning of code.

Confidential, Santa Clara, CA

Technologies used:C, Python, Openstack OS

Responsibilities:

• Openstack public/private cloud deployments
• Openstack cloud management capabilities
• Openstack internals (Mostly networking (Neutron) along with exposure to Compute & Storage)
• Openstack development, review & testing process by involving in mailing list communications
• Openstack development (GIT) and review tools
• Openstack source code structure

Confidential, Sunnyvale, CA

Technology Used: C, TCP/IP, Alteon OS, STEM OS and SMP Linux

Responsibilities:

• Filtering mechanism to analyze and control ingress/egress traffic based on layer 2(MAC/VLAN), layer 3(IPv4/v6) and layer 4 (TCP/UDP) information. The filtering actions includes allow, deny, NAT (both static and dynamic) and redirection.
• Layer 7 content-aware (Pattern Match) filtering mechanism to parse through layer 7 header and data fields (comparisons in ASCII and binary format) of the ingress/egress traffic and hence providing enhanced control over the services provided by the application servers.
• HTTP Redirection feature to redirect the client's requests to different service gateways or servers. The redirection is based on IP, port and URL match.
• Solving Endian issues.

Confidential

Technology Used: C - Language, TCP/IP, Alteon OS, STEM OS and Linux

Responsibilities:

• L2 - L7 Switching (Filtering).
• Application load balancing based on protocols like HTTP, FTP, RADIUS, SIP, DNS etc. using intelligent algorithms like least connections, round robin etc.
• High Availability (VRRP) and Server-end redundancy.
• Security protocols (RADIUS & TACACS+).
• Network Security like DOS, SYN Attack and Symantec.
• WAN Link, Firewall and VPN load balancing.
• Security protocols (RADIUS & TACACS+).
• High Availability (VRRP) for topologies like Active-standy, Active-Active, Hot-Standby.
• Server-end redundancy feature, a fail-over mechanism, allowing to seamlessly bringing up a backup server/group in case a primary server/group fails.
• Server Load Balancing based on RADIUS, HTTP and FTP.
• RADIUS (Authentication & Accounting) based health-check (one of the many health-checks provided on NAS), is a mechanism to poll for the health of RADIUS servers in specified intervals and allowing the NAS to know as and when there is a more than acceptable delay from the server/service.
• Bug fixing.

Confidential

Technology Used: C, Linux OS and GNU debugger

Responsibilities:

• Understanding VRRP as in RFC 2338.
• Preparing functional description documents.
• Developing and coding.
• Unit testing.