Splunk core data platform, C++.

Principal Engineer leading Indexing and Storage component of WAN accelerator.

• Lead technical contact and represented Riverbed in discussions and partnerships in improving their WAN accelerator product-line by introducing NVME in storage tier and taking advantage of improved NVME read/write semantics.

• Improvements and fixes to C++ based Indexing and Search (encompasses TCP/IP connection handling and mux/demux data segments over ingress/egress, Storage & Caching), Multithreading and Memory Management.

• Lead effort to run WAN Accelerator as a container service on their SD-WAN appliance replacing KVM based virtual machine thus eliminating heavy Storage and Network penalties imposed by VMKernel IO layers.

• Scaling content store and caching by decoupling Index tier into a scalable and replicated cluster for SaaS solution.

Technical lead and coding storage stack for performant, fault-tolerant and scalable storage solutions. Key contributor in solving several problems related to Block Virtualization and handling fault-tolerance aspects of data, Caching, Performance and Scalability, high speed Metadata indexing and locking, RAID, Rebuilding, Backup, Migration, Snapshot, Erasure Coding, API design for Middleware features and Storage Management. Contributed in Linux/ESXi kernel and Application components for various key deliverables.

(Continued my roles and responsibilities when PMC-Sierra was acquired and renamed to Microsemi Storage Solutions US INC)

Implemented and Delivered Solaris 11 Network stack drivers and IO acceleration for network boot protocol. Ensure correct functionality of the network interface under various scenarios of OS Virtualization (Hypervisor, Containers), QoS, VLAN, tunneling, link aggregation, classification and traffic routing etc., NUMA performance optimization, problem isolation and fixing though Dtrace and kernel debugging methods, Performance engineering and improvement.

Key contributor in areas encompassing various RAID system implementations, caching, replication, snapshot and fault-tolerance/mitigation methods. Involved in SDLC including conception, implementation and customer delivery. Understanding of file systems, storage architectures, data redundancy algorithms, Caching, Scalability and Performance, IO protocols and state machines, Linux kernel modules, configuration and management application.

Implemented protected mode execution of SAS/SATA protocol stack library for boot and runtime execution.

Implemented bringup for MIPs and ARM based SoCs and IO controllers, and handled changes for hardware/software interaction modules for offload engines such as XOR, DMA and Erasure Codes.

Experience handling In-circuit emulators(ICE) to debug and solve tricky issues related to x86 execution states.

Handled protocol analyzers to trace and analyze SCSI/SAS and SATA protocol level behaviors and solve issues.

Continued my roles and responsibilities when Adaptec India was brought under HCL Technologies on July 22, 2008.