Jan 2020 – Jan 2022 · 2 yrs · Bangalore Urban, Karnataka, India

• Set up a custom Apache Airflow based platform for scheduling and orchestrating Spark and Pandas
• workflows, deploying 10+ scalable, reliable, and observable workflows.
• Migrated the Minimum-Base-Quantity Prediction system from legacy shell scripts to Spark/Airflow,
• scaling operations from 7 to 30+ cities. Upgraded Spark 2 on EMR to Spark 3 on Kubernetes, achieving
• 2x performance gains and 60% cost savings.
• Designed and implemented a backend system for a time-critical Indian government project enabling
• online alcohol delivery, leading 15+ engineers to deliver the solution in 1 month. The initiative
• generated ~$3 million in sales and 200K customer enrolments in 1.5 years.
• Led the BigBasket integration with Tata Digital, driving technical execution for seamless customer
• lifecycle business workflows.

Mar 2019 – Dec 2019 · 9 mos · Bengaluru Area, India

• Collaborated cross-functionally with product, architecture, and business teams to design scalable data solutions powering gamification for millions of Delivery Executives.
• Transformed ambiguous product requirements into detailed solution documents with low-level designs, covering batch and real-time event processing using Spark (millions of events/day).
• Led a team of four SDE2s to deliver these features end-to-end.
• Also built a general-purpose messaging service with multi-locale support and versioning, enabling scalable, flexible communication across platforms.

Sep 2017 – Sep 2018 · 1 yr · Bangalore · On-site

• Worked in Contextual Advertisement Engg. team under the bigger umbrella of Bangalore Ad Optimization team - A9.
• Maintained Contextual Ads Realtime ML trainer with 500+ TPS scale, part of A9-Ad Optimization org.
• Developed & productionized Data Science Reporting and Competitor URLs to Amazon ASINs mapping.
• Worked on Cache Prewarming and Traffic Rules Engine redesign.
• Used ML models on a large scale to suggest top Amazon Products based on pre-crawled page content.

Jan 2014 – Aug 2017 · 3 yrs 7 mos · Bangalore · On-site

• Worked as a Developer on Retail Website(amazon.com) for Amazon Student Team under bigger umbrella of Prime.
• Redesigned and implemented graduation service for upselling discounted Student offer to full Prime
• with new daily enrolments of 10K+ members and additional yearly revenue of $4+ billion.
• Major contributor to launching Prime Student in Canada and France for millions of college students.
• Did 40+ Internal API migration, code refactoring and clean-up using TDD and BDD process.

Feb 2012 – Jan 2014 · 1 yr 11 mos · Bangalore · On-site

• Sourcing Project involved maintaining Java code for the document management system.
• Identified new features and fixed 20+ business and technical issues related to the product.

Jan 2011 – Feb 2012 · 1 yr 1 mo · Mumbai Area, India

• Worked in Nomura Financial Services(IT Dept) in Equity Finance Department
• Optimized logic for the Funding Engine that automates the refund in the Security Lending systems.
• Built an automated PDF reporting tool for the Corporate Actions Portal team from scratch.
• Did code quality improvement based on Effective Java by Joshua Bloch using the SonarQube tool.

Aug 2008 – Jan 2011 · 2 yrs 5 mos · Pune Area, India · On-site

• Product development and integration of Order Management System with Sales Engine.
• Importing of Product Catalogue from Enterprise Product Catalogue.
• Worked for AT&T Mobility client on Ab Initio ETL tool and Ensemble Billing product.