• Architected, designed and implemented 40+ core features in the platform, IP and IS-IS modules for the 7450/7750/7950 SR L2/L3 service edge and core routers

• Interacted with Product Managers to analyze feature requirements, assist with RFC standards drafting, and hash out feature details and design

• Technically led the IS-IS routing protocol team and owned the code base for the IS-IS routing protocol

• Assisted QA, Systems Test, 4LS customer support and other teams to debug and resolve issues

• Enhanced software design and refactored existing code to make it faster, scalable, stable and maintainable

• Sample features designed and implemented:

Shortest Path First (SPF) Dijkstra graph algorithm and related extensions/enhancements using tunnels and loopfree alternate (LFA) policies

RSVP Traffic Engineering (TE) database for intra-area/inter-area CSPF, Dynamic ABR selection & SDN

B-VPLS L2 SPB (Shortest Path Bridging)

Authentication Keychain mechanism using MD5/SHA algorithms for hitless transition

ISIS multi-instance and multi-topology

ISIS Async/lockless operation

High Availability, Redundancy & 64-bit ISSU

IP Ethernet Unnumbered interface support for RSVP & ISIS

• Worked on Systems software/components for legacy Ericsson and next-gen Redback L2/L3 routers and switches.

• Designed and implemented features such as cross-platform multicast IPC (inter process communication) framework, semaphore order checking and lock prevention, and QoS programming to minimize network latency

• Designed and implemented GSM Wireless Voice Core Mobile Switching Center (MSC) component features and fixes

• Fixed and enhanced functionality in the areas of Network Signaling, Systems Software, Mobility & Supplementary Services