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About Me

Chandan is a seasoned Data Architect with over 15 years of experience working with several Banking , financial, Retail clients helping them in Digital Business transformation, consulting and designing and building Real time , streaming and batch ingestion/consumption pipelines. Apart from doing hands work I have been also taking interviews for 10 years now in technology domains including BI, DWH, ETL tools, Teradata,MPP, Python, Spark, Storm, Kafka, distributed processing, cloud technologies specifically GCP. I have been guiding and helping others grow by finding pin pointed area of improvements and area where they can excel.


  • Manager

    Publicis Sapient
    Jan 2017 - Jan 2021

    As a Big data Developer/Architect, provided estimations, solutions, integration, enhancement, support and development of Account information System for the client, and roles and responsibilities were as follows:-  Understand the various business functions of client and their existing banking system through interactions with the client stakeholders and related tracks.  Cassandra Modelling - Taking care of all No-SQL Cassandra activities including maintaining Key-Spaces, altering, updating and creation of database objects like User defined Functions/Tables/Materialized-Views etc. Creating and Maintaining Data Mapping/Lineage documents and Visio Models and involved in performance tuning. Conceptual and Logical Modelling using KDM tool. And DB migration using cqlmigrate.  Single handed-ly designed optimal Cassandra solution in terms of Consistency level, replication factor, Repair, compression/compaction strategies and purging approach.  Designing the flow of data Ingestion pipeline using Spark/Storm/Kafka/Hbase/Cassandra for various Banking requirements.  Creating Design documents / Analysis / scenario creation for various functionalities like De-normalizing data, Housekeeping implementation, Core Banking systems, Credit Card and Debit Cards.  Node JS scripting for specific scenarios.  Key person for One Time Load /historical load and reconciliation from source systems to Cassandra using Spark via staging.  Continuous Integration / Deployment (CI/CD) and Versioning using Git/Gerrit/Jenkins  Key person to interact with Infrastructure team and helped them with Cassandra Sizing with multi data center setup.  Implemented Authentication /Authorization on Datastax Cassandra through Kerberos. And responsible for SSL setup with Dual Authentication.  Instrumental in presenting and discussing various design decision for multiple projects and journeys as part of Central Design Authority.


  • Master Of computer Application

    JSS Academy of Technical Education
    Jun 2003 - Jun 2006

    Studied computer applications


  • Google certified Cloud Architect

    Apr 2020
  • Datastax certified Cassandra Professional

    Apr 2018