Jul 2021 – Sep 2023 · 2 yrs 2 mos

• Spearheaded the successful integration of a containerized layer 7 security solution into a Kubernetes-orchestrated firewall-as-a-service
• Led and mentored a team in enhancing the capabilities of a containerized layer 7 security solution with Cisco's next-generation firewall features such as Access Control Policy, File Policy (AMP and Threat Grid), and Security Intelligence, among others
• Coordinated and led efforts to enhance control plane performance by identifying and resolving multiple performance and scalability issues

Jan 2018 – Aug 2021 · 3 yrs 7 mos

• Successfully led the delivery of containerized layer 7 security solution for Meraki, driving the implementation of translating user configuration to actionable security configuration and integrating the true Inline-IPS feature for Meraki's MX devices
• Played a key role in developing a layer 7 containerized intrusion prevention and detection engine (IPS/IDS) with a focus on the control plane
• Pioneered the adoption of behavior-driven development for automation testing, successfully introducing the methodology to the team and providing expert guidance and support to ensure its successful integration and ongoing improvement.

Jul 2015 – Jan 2018 · 2 yrs 6 mos

• Designed, developed and tested various components of Restlet based REST API Framework for Cisco’s security products
• Developed some enhancements needed for mock implementation based on MongoDB to test REST API framework
• Designed and developed automated testing based on Frisby to test REST API framework and integrated it with Jenkins for continuous integration
• Implemented backend support for REST API Framework and REST endpoints in Java and Perl
• Conducted end to end testing of REST API on Cisco’s security products using REST-Assured and python scripts
• Lead short-term projects to deliver critical REST features needed for Cisco’s security products

May 2014 – Jul 2015 · 1 yr 2 mos · Bethesda, MD

• Implemented uplink power control and carrier aggregation (LTE-Advanced feature) for LTE models
• Supervised and guided R20 enhancements of ZigBee models
• Presented and reviewed advanced product training sessions during Modeler User Conference 2015
• Provided expert assistance to the technical support team to bring a timely closure to customer issues
• Mentored new team members on the best practices to ramp up their productivity

Apr 2013 – Apr 2014 · 1 yr · Bethesda, MD

• Implemented DRX in connected state and MIMO spatial multiplexing feature for LTE models
• Developed physical layer abstraction model for MIMO spatial multiplexing in LTE
• Provided technical expertise to the sales team for helping prospective customers understand the capabilities of software
• Guided customers to customize models and use Modeler efficiently
• Presented and reviewed advanced product training sessions for OPNETWORK conferences

Jan 2011 – Mar 2013 · 2 yrs 2 mos · Bethesda, MD

• Implemented 802.11n enhancements for WLAN models including 40MHz transmission, A-MSDU and A-MPDU capabilities
• Developed physical layer abstraction models for multipath fading and transmit diversity for LTE models
• Created SNR Vs BLER performance curves for all modulation and coding indices used in LTE
• Provided technical support to customers
• Presented product training sessions for OPNETWORK conferences

Jan 2008 – Dec 2010 · 2 yrs 11 mos · Bethesda, MD

• Implemented 802.11n model enhancements for WLAN models which includes support for higher data rates and backward compatibility with legacy technology
• Implemented multi-target handover, PUSC segmentation, MIMO transmit diversity, control messages over PHY and MAP over PHY enhancements for WiMAX models
• Created SNR vs BLER performance curves for all modulation and coding indices in WiMAX

May 2007 – Aug 2007 · 3 mos · Bethesda, MD

• Implemented a physical layer abstraction model for open loop transmit diversity in WiMAX model suite for discrete event simulation in OPNET Modeler

Aug 2004 – Jul 2006 · 1 yr 11 mos · Chennai Area, India

• Tested, commissioned and integrated Ericsson based GSM Base Station Controllers (BSC), Mobile Switching Centers (MSC) and Transcoders (TRC) into live network
• Developed and implemented solutions to enhance network performance and minimize issues like network availability and network quality

Jul 2002 – Aug 2004 · 2 yrs 1 mo · Kolkata Area, India

• Tested, commissioned and integrated Siemens’s Base Transceiver Stations (BTS) and microwave links of diverse vendors like Siemens, Nokia, Ericsson and CMI into live network
• Conducted support and maintenance of Base Stations Subsystems and transmission systems of GSM mobile network