Jun 2019 – Feb 2021 · 1 yr 8 mos · Greater Bengaluru Area · On-site

• Soumen worked on federation of user Identity into and out of Intuit, supporting SSO for both outside parties and Intuit application and partners. This helped Intuit to integrate newly acquired entities safely and quickly into Intuit framework. He also worked on facilitating movement of financial data of extremely sensitive nature into and out of Intuit. He worked on cutting edge authentication/authorization protocols like OAuth2.0, OpenIDConnect, SAML. Also worked on enabling Intuit to meet various banking standards like OpenBanking, Australia CDR and PSD2.

Apr 2016 – Jun 2019 · 3 yrs 2 mos · Bengaluru, Karnataka, India · On-site

• Soumen designed and helped implementing the next generation fulfilment management system for Walmart e-commerce. This replaced the legacy Stirling based fulfilment system and was distribute, reliable and elastic. Also worked on Walmart's enterprise service bus and authorization services.

Aug 2013 – Mar 2016 · 2 yrs 7 mos · Bangalore · On-site

• Soumen worked for the Extensibility team of Enterprise Management (EM) Software. Was deeply involved in design and implementation of various Extensibility platform microservices on SAAS platform for EM. Designed high capacity data ingestion microservice for loading configuration and metric data in platform.
• Worked on SmallFile support in data ingestion service on HDFS, Platform wide metadata service, Generic Entity Model and other microservices. Worked on proof of concept of scalable deployment using Docker. Individual responsibility also includes mentoring people for various technical roles and conducting periodic training sessions.
• Worked on entity search platform to handle metric uploaded by large number of entities, and log analytics and reporting using Hadoop.

May 2010 – Aug 2013 · 3 yrs 3 mos · Bangalore · On-site

• Soumen Worked on implementing various Machine Learning algorithms for user behaviour prediction. The models predict click and conversion probabilities for Y! RMX Ad Exchange. It involved crunching huge amount of data in Hadoop (Map-Reduce and PIG) as well as building models. The models used were: Decision tree for click and conversion prediction and Expectation Maximization correction modules, Maximum Entropy Models and Random Forest. Also experimented with various other models.
• Platform: Hadoop
• Language: Java, PERL, PIG
• Technologies: HBASE

Aug 2005 – May 2010 · 4 yrs 9 mos · Caluctta

• Was involved in Architecting, Mentoring, Developing and Researching in Onereview RA and Fraud management software. The areas worked on includes File based stream analysis, Mathematical Models for data analysis, Test Call Generator, Rule Based Fraud, Workflow engine, ETL Framework, Adapter Workbench and Search. Worked on time based aggregation of CDRs to uncover hidden patterns like number having only outgoing and no incoming calls, outgoing calls exceeding a limit in a specific amount of time, numbers staying at a single cell tower for more than a specific amount of time etc. Had very good exposure to telecom data analytics.
• Languages Used: Java, C++

Apr 2005 – Jul 2005 · 3 mos

• Managed development of digital set top boxes. Developed a couple of Linux USB device drivers as well.

Jun 2002 – Apr 2005 · 2 yrs 10 mos

• Involved in the TECS client services front end for JPMorgan Chase bank. Work involved maintaining/augmenting the SmallTalk UI, Tuxedo/RogueWave middleware and eventually porting the UI to javascript. Mastered SmallTalk in a short space of time and helped others understand.

Dec 2000 – May 2002 · 1 yr 5 mos · Kolkata, West Bengal, India · On-site

• Designed and build VOIP products based on H.323 and SIP protocol.

May 1999 – Dec 2000 · 1 yr 7 mos · Calcutta · On-site

• Worked as a developer for a search product with personalized experience. Worked on VC++ and Java, on things like Web Crawling and Natural Language Processing

Jan 1996 – Jan 1998 · 2 yrs · Kolkata, West Bengal, India · On-site

• Worked on Iridium Projects initially - developed tools to encode/decode ASN.1 message protocols. Moved on to CAD-VLSI and worked on optimization of logical circuits with transistor sizing and also on various search problems on VLSI floorplan.