Saurabh Kumar

Experience

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  HP

  Jun 2012 - Jul 2012

  Software Engineer Intern

  Technologies used - Java, MySQL.

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  CAREERCUP, LLC

  Jan 2013 - Jun 2014

  Moderator

  > Administer activities on CareerCup.

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  HackerEarth

  Jan 2014 - Jan 2015

  Problem Curator and Moderator

  > Problem Setting/Testing.> Curated complete problem-set for Dandi March'14 challenge.> Administer activities on HackerEarth.

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  Chegg Inc.

  Feb 2014 - May 2014

  Moderator

  > Global Rank 3rd in March'14 among 100k+ active Cheggers.> Awarded Moderator privilege to administer activities on Chegg.

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  Samsung Mobile

  Jun 2014 - Nov 2015

  Research & Development Engineer

  R&D engineer in Telephony mobile data framework team which owns core mobile data modules.> Worked on critical features such as data usage, Tethering, Hotspot, MMS and APN settings/editor. > Worked on Lollipop upgrade of A, E, J series and flagship models including Galaxy S5, S6 and Note 4 etc.> Fixed 700+ bugs at mobile data framework layer for different models including flagships.> Collaborated with Principal Engineers from Korea to mitigate critical bugs in latest flagship models. Show less

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  Wipro

  Dec 2015 - Jun 2016

  Sr. Technologist (Founding member)

  > Founding member of Wipro Digital (newly established reputable wing of Wipro), an initiative to build applications for IOT and AI powered physical products.> Worked on IOT Android apps for Smart Home Solutions.

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  Amazon

  Jul 2016 - now

  > Leading a team which builds distributed jobs and workflows orchestration for modeling applications owned by research scientists, assisting them to optimize last mile network and logistics. > Leading reduction of unbalanced inventory distribution for products due to buying and placement anomalies.Technologies Used:Languages: Java, Ruby, ReactService Compute: Lambda, ECS - EC2/Fargate, DaciaDatabases: DynamoDB, RDS, Elastic SearchTools: S3, Lambda, SNS, SQS, Eventbridge, CloudWatchOthers: Dagger Show less > Sponsored Ads team owns tier-1 Ads-Sourcing ecosystem that supplies Sponsored products Ad-Demand for search page and detail page placements.Key deliverables> Led design and development of integration of online Ads sourcing for Detail Page Ads execution workflow.> Led migration of legacy Ads execution workflow to DAG based parallel Ads Delivery Engine.Technologies Used:Languages: Java, Bash, TypeScript, YamlService Platforms: gRPC, Coral, NAWSConfig and rule store: SDCDatabases: Redis, Solr, Redshift, DynamoDBTools: S3, Lambda, SNS, SQS, CloudWatch, DJS Show less > Try Before You Buy (TBYB) is an optimistic fulfillment program, where we ship items to customers, offer 7 days of trial period, and only charge for what they choose to keep.Key deliverables:> Led design and dev of promotions and deals for new TBYB customers leading to ~XX% new customer acquisitions.> Led design and dev for integrating TBYB with Seller fee systems, which enabled XXK+ 3P seller onboarding.> Led design and dev of TBYB ordering workflow merge-back to regular ordering stack reducing 20+ SDE week of annual deployment and maintenance effort, 15K+ source code reduction, and $XXK+ annual IMR usage reduction.> Led FC expansions in TBYB supported regions leading to 4X improvement in product selections and inventory availability leading to 3X increased order rate.> Design and development of payment recovery strategies to safeguard business from payment risks reducing non-payments from ~XX% down to below YY%, and recovering $XXMM+ in debt.> Mentored intern(s), and assisted them in design, development and delivery of tractional and marketing notifications for personal shopper program’s customer engagement. The intern was offered fulltime role after evaluation.Technologies Used:Languages: Java, Ruby, Python, Bash, Drool, JavaScriptService Platforms: Coral, HEX, Herd, NAWSConfig and rule store: G2S2, RMPDatabases: Redshift, Andes, DynamoDB, RODB, BullseyeTools: Kinesis, Quicksight, S3, Lambda, SNS, SQS, Hubble, CloudWatch, DJS, Datapath, Datanet (ETL) Show less Address Intelligence and Experience (AIX, Delivery Experience):> Part of core engineering team which managed service to handle validation and hierarchical storage of retail customer addresses.Key deliverables:> Led design and development of address resolution with building synthesis for Germany mapping 200MM DE addresses to 75MM unique addresses in the bootstrap.> Integrated a 3P matching engine with address resolution service to improve address attributes coverage of US by XX% reducing delivery missed for resolved unattributed address by ~XX%.> Integrated a 3P library for address validation in Spain which improved the first day delivery success by XX%.> Automation of reference data update for address resolution, thereby reducing dev intervention hours by XX%.> Built robust address resolution test suites for full CD deployments, thereby reducing dev intervention hours by XX%.Technologies Used: Languages: Java, C++, BashFrameworks: Coral, Codigo, BSFDatabases: Redshift, DynamoDB, AthenaTools: S3, ElasticSearch, Lucene, DJS Show less

  • SDM, Modeling and Optimization, Last Mile Tech

    Sept 2022 - now

  • SDE III, Modeling and Optimization, Last Mile Tech

    Dec 2021 - Sept 2022

  • SDE II, Ads Sourcing, Sponsored Ads

    Jul 2021 - Nov 2021

  • SDE II, Try Before You Buy, Softlines Tech

    Sept 2018 - Jul 2021

  • SDE I/II, Address Intelligence, Last Mile Tech

    Jul 2016 - Aug 2018