Apr 2022 – Feb 2025 · 2 yrs 10 mos

Apr 2021 – Apr 2022 · 1 yr

Oct 2019 – Apr 2021 · 1 yr 6 mos

Aug 2018 – Oct 2019 · 1 yr 2 mos · Bengaluru Area, India

• Verizon Insights :
• Verizon Insights is developed by the Verizon Big Data and Artificial Intelligence (BDAI) team that generates marketing insights based on location, clickstream, demography and CRM data. Target audience based on any of these parameters and reach them effectively via various campaigns. Everyday 10s of TBs of clickstream data is ingested, processed, indexed and available for visualisation, insights and other processes.
• I worked on the ETL, API and middle tier components. I lead the team working on the middle tier. Part of the work involves productizing ML algorithms.
• Involved in generating insight data that is used by internal Verizon customers for advertising and other campaigns.
• Some of the technologies working on include Spark (scala), Spark ML, Spark as a service, Akka (scala version), Spring, MySQL, HBase, Lucene/SOLR
• Verizon Toll Free Data Service (TFDS) :
• The verizon TFDS service was developed to provide toll free data services to customers. I lead the development and deployment of a http proxy that tracked the number of bytes in a http session. The product was developed in a relatively short time and with very good quality.
• Some of the technologies worked on in this project : golang, redis, etcd.

Nov 2014 – Aug 2018 · 3 yrs 9 mos · Waltham, USA

Jan 2012 – Nov 2014 · 2 yrs 10 mos

• 1. Responsible for delivering projects on time.
• 2. Guide engineers on technical issues and drive design of new features and software architecture.
• 3. Interface with different teams and upper management on project status.

Mar 2010 – Dec 2011 · 1 yr 9 mos

• Routing intelligence is provided by PSX (policy server) in the Sonus network. The PSX provides optimal routing efficiency and potentially unlimited scalability in the network.
• My responsibilities include -
• Technical design
• Developing new features
• Performance
• Quality initiatives
• http://www.sonusnet.com/products/policy-and-routing.aspx
• http://www.sonusnet.com/Solutions/Solutions-for-Service-Providers/VoIP-Trunking-Solutions/Number-Portability.aspx

Jul 2006 – Oct 2009 · 3 yrs 3 mos

• Project Management: Single point of contact for external customers, managed requirements, external communication of time-lines, stakeholder management
• Product Management: Prioritized features, interfaced with customers to educate them on envIO products.
• Systems Engineering: Detailed requirements specification
• Development Manager:
• . Drove the design and development of the handset applications which included the core application logic, presentation framework, application versioning and delivery and configuration.
• . Managed a team responsible for design and development of applications on the J2ME and BREW platforms
• . Helped design the client-server protocol
• . Involved in coding of the BREW client
• . Helped design the envIOCast Markup Language (ECML). ECML defined the presentation capabilities of the handset application
• Was one of the first members to join the engineering team in India. Helped build the engineering organisation by participating in the hiring, training of new engineers and also interfacing with consulting organisations to outsource work.

Jan 2006 – Jan 2009 · 3 yrs

Mar 2003 – Jun 2006 · 3 yrs 3 mos

• Key contributions and accomplishments.
• . Helped establish a patent committee to encourage and review patent applications from the Bangalore team
• . Contributed to standardizing development and testing processes under a six sigma initiative
• . Managed the development, testing and on-site/off-site technical support for OMA interoperability events
• . Acted as a liaison between engineering and standards team. I received a “Significant Participation” award in recognition to my contribution to the standards process
• . Developed a training program to train new engineers
• I lead a team that delivered multiple releases to add functionality to the POC product
• . Designed the Distributed Active Directory (AD) solution. This added significant scalability to the product
• I lead a team that was responsible for the development of the following features as per the OMA POC specification.
• . Ad-Hoc group call, pre-arranged group call and a chat group call
• . Network to Network Interface (NNI)
• . Rejoining a session
• . Adding a user to an existing session
• . Instant Personal Alert
• . Incoming Session Barring (ISB)
• . XDMS interface
• . Changes to the SIP protocol to parse and act on IMS related headers
• . Supported interoperability between OMA POC and the Motorola Push To Talk (MPTT) clients
• . Ability to add users to the contact list, add, delete and modify groups and group lists from the handset

Jan 2003 – Jan 2006 · 3 yrs

Jan 2003 – Jan 2006 · 3 yrs

Sep 1999 – Feb 2003 · 3 yrs 5 mos

• Worked extensively on the SIP, H,323 and TUCL (TCP/UDP convergance layer).
• Key contributions include.
• . Implemented RFC 3265 (SUBSRIBE/NOTIFY), RFC 3311 (UPDATE).
• . Implemented a draft versions of RFC 4028 (Session Timers), RFC 3841 (Caller-Callee preferences), RFC 3515 (REFER)
• . Designed and implemented the Load Distribution Function to distribute SIP dialogs across different SIP nodes for scalability
• . Designed and implemented the multi threaded version of the TCP/UDP Convergence Layer (TUCL).
• . Helped make the H.323 stack fault tolerant by identifying checkpoints to backup session state
• . Did performance analysis on the H.323 stack, identified bottlenecks and changed design to improve performance during high load conditions.
• . Added support for RAW sockets.