Mar 2013 – Sep 2023 · 10 yrs 6 mos · New Delhi, Delhi, India · On-site

• Spearheaded design and implementation of RAG pipeline for Product Recommendation, reviews moderation, sentiment analysis, automated customer email responses; boosting retention rates by 50%.
• Established and led an Infrastructure team at CaaStle to tackle manual engineering challenges, automating processes with open source and/or in-house developed tools. Achieved 20% reduction in AWS costs, saving USD 300K on web hosting and USD 500K on payment gateways integration while maintaining system reliability.
• Addressed single points of failure by leading development of 3-node MySQL Cluster,maintaining operational costs while enhancing data redundancy.
• Successfully led cross-functional teams to consolidate monitoring, tracing, alerting, logging systems into single view by integrating applications with open source telemetry SDK, APIs and tools.
• Directed teams to develop scalable logistics modules to overcome fulfilment challenges at 5% lower operational cost, resulting in patent recognition.
• Led integration efforts of Stripe Payment GW amidst technical challenges, saving USD 500K annually.
• Engineered solution to streamline inventory mgmt across multiple brands and multiple tenants,enabling its real-time movement and tracking.
• Spearheaded the design and development of features for warehouse and merchandising operations in the Operational Portal, enhancing operational personnel experience and efficiency by 5%.
• Redesigned customer portals to enhance user experience, addressing low customer retention; achieving a 5% increase in subscriptions.
• Directed a team of 80 engineers in developing a PaaS platform for subscription based garment rental model,for B2B and B2C clients.
• Ensured IS27K1 compliance for SW engineering, addressing security risks from OWASP Top 10, Penetration Testing, enhancing system security and integrity.
• Led complex workflow integration with Manhattan Warehouse Mgmt System, NetSuite, Stripe, Shopify, Salesforce, Zendesk

Sep 2008 – Feb 2013 · 4 yrs 5 mos · Noida · On-site

• Established an Engineering Center at STP (Software Technology Park), recruited engineers; and directed a team of 50 engineers for design, development and release of Video Products for US Market; following agile methodology.
• Architect and Design SIP based MM application for Android 4.x/iOS smartphones that enables bi- directional Peer-2-Peer Video Call; 1+15 Multi Party Video conference application over Wifi, 4G and 3G networks.
• Architect and design Session and Media processing modules for cloud based Dilithium Content Adapter (Video Streaming Server) that provides HTTP, RTSP and HTTP Adaptive (HLS) audio-video (H264, AAC, AMR etc) streaming capabilities from Content Management System towards OTT, IMS and CS hosted devices over varied networks - 2.5G, 3G, EDGE, WiFi, 4G etc for static (e.g. Digital Locker box) and dynamic contents (e.g. Live sessions).
• Lead software architecture, design, development and implementation of Call Processing, Media and PlatformmodulesforVideo TranscodingGateway(DTG)encompassingmultiplefeaturese.g.ITU-Tand ANSI SIP-I, BICC signaling; Early Media for SIP and SIP-I; Video Ring Back Tone (VRBT); Interactive Voice and Video Response (IVVR); Customized Video resolution for operator; Announcement for speech-only calls; IPSP support; Multi-Media (MM) to Speech Fallback.
• Member of team interacting with TEC (Telecommunication Engineering Committee) for developing
• standards for deployment of 3G services in Indian market.
• Worked closely with CTO and Senior Management to understand video market trend, competitor’s
• products, customer network topology; review and refine Engg Requirements.

Nov 2001 – Aug 2008 · 6 yrs 9 mos · New Jersey (USA)

• Architected, Designed, Developed and implemented the Access Exchange (ASX), a multi process, multi threaded carrier grade, fully redundant Soft switch providing session establishment, Class 5 and IP centrex feature set to SIP, MGCP and H248 based IP endpoints. It can be used either as Application Server (IMS network) or as AGCF (TISPAN).
• Architected, Designed, Developed and implemented the GSX9000 VoIP Network Border Switch (NBS) The GSX 9000 is the carrier-class Open Services Voice over IP Class 4 Switch to enable converged PSTN-IP and IP-IP IMS based infrastructure.GSX9000 is a completely programmable and redundant VoIP switch. It inter-operates seamlessly with SS7, ISDN, CAS networks and can be positioned as either BGCF or MGCF or CSCF in IMS network.

Jan 1998 – Oct 2001 · 3 yrs 9 mos · New Jersey, United States · On-site

• Engineered innovative call processing software across ISDN, SIP, H.323 and ATM networks, enhancing callsetup experience for VoATM calls and VoIP calls.

Jan 1997 – Dec 1997 · 11 mos · Noida, Uttar Pradesh, India · On-site

• Executed stress testing of "Mail On The Run" to validate network performance, content consistency; achieving 80% improvement in latency benchmarks.

Jun 1995 – Dec 1996 · 1 yr 6 mos · Chennai, Tamil Nadu, India · On-site

• Implemented and Validated OSI layers for remote dev team's setup, scripting, and testing, resulting in successful project delivery and on-time completion rate during a 6-month project in the US on a B1 visa.

Oct 1993 – May 1995 · 1 yr 7 mos · Bengaluru, Karnataka, India · On-site

• Engineered a hardware card to enhance ISDN channel functionality, enabling real-time announcements during call setup, thereby boosting user experience.