Summary
Overview
Work History
Education
Skills
Timeline
Generic
Karthik Devi

Karthik Devi

Data Engineer/Lead Mainframe Developer
The Hague

Summary

Dynamic Data Engineer and Lead Mainframe Developer with extensive experience at ASR/Aegon Netherlands B.V. Proven expertise in SQL and Python, successfully migrating legacy applications to Azure and AWS. Adept at optimizing data workflows and enhancing system performance, while demonstrating strong problem-solving skills and delivering impactful solutions in high-pressure environments.

Overview

19
19
years of professional experience
2
2
Languages

Work History

Data Engineer/Lead Mainframe Developer

ASR/Aegon Netherlands B.V./HCL Netherlands B.V.
05.2011 - Current

As a Data Engineer,

  • Helped in migrating LIFE Applications/Data from Legacy/AWS to Azure.
  • Developed and executed Python/SQL notebooks in Azure Synapse Analytics,utilizing Apache Spark pools for efficient big data processing.
  • Monitored and optimized data workflows using AWS CloudWatch and AWS Glue, ensuring system reliability and performance.
  • Migrated the On-premise Mortgages Applications(Nexus) into AWS Cloud.
  • Created, Deployed and managed the pipelines using Azure CI/CD.
  • Performed production runs in both AWS and Azure environments


As a Mainframe Developer,

  • Involved in the migration of VSAM to DB2 using REXX/COBOL.
  • Developed programs in COBOL for the migration of Application data to msg-life and to datalake tables where the data from these tables will be copied to AWS datalake.
  • Created PowerBI reports and dashboards for finance statistical analysis with user interactive slicers.
  • Provided maintenance and support for the Non-Life Applications.
  • Involved in the migration of Non-Life Business Policies to external vendor & decommissioned all Non-Life applications.
  • Developed automated scripts using R/Rstudio/Shiny on migration for performing Report level validation.
  • Preprocess the RAW data from instance and applied PowerBI model to create meaningful PowerBI visualizations, developed data quality analysis by creating metrics for various Business rules in Non-Life Reports.
  • Used Informatica Power Center client tools for transforming the data during the migration.
  • Acquired knowledge transfer on Applications like Mortgage, Non-Life, Generic Cobol Applications from different Business Lines and provided the necessary support.
  • Involved in migrating COBOL-IDMS programs to COBOL-DB2 programs.
  • Created innovated tools using REXX for the faster delivery of requirements in the project.
  • Provided permanent solutions for the incidents, reducing the incident count and on-call support for the batches.

Unisure/Mainframe Developer

Aegon UK/HCL Technologies Ltd.
06.2009 - 04.2011
  • Involved in the complete life cycle of an insurance product starting from the design stage to until the deployment using Lync language in Unisure environment.
  • Provided maintenance and support for Price corrections Application in ZOS Mainframe where fund prices will be adjusted.

Senior Mainframe Developer

Belgacom/HCL Technologies Ltd.
02.2009 - 06.2009
  • Involved in the conversion of Programs, Procs, IDMC DC Programs and Dialogs from Fujitsu Mainframe ( BS2K ) to IBM ZOS.

Mainframe Developer

IBM/ACS Ltd
06.2007 - 01.2009
  • Monitored code and overall application to drive seamless performance.
  • Designed and developed robust COBOL programs, resulting in improved operational productivity.
  • Developed and executed complex system test plans to support quality.
  • Troubleshot business logic and performance issues in existing mainframe applications.
  • Provided on-call support for the production batches

Education

Bachelor of Technology - Computer Science

Jawaharlal Nehru Technological University
Anantapur
04.2001 -

Skills

SQL expertise

Timeline

Data Engineer/Lead Mainframe Developer

ASR/Aegon Netherlands B.V./HCL Netherlands B.V.
05.2011 - Current

Unisure/Mainframe Developer

Aegon UK/HCL Technologies Ltd.
06.2009 - 04.2011

Senior Mainframe Developer

Belgacom/HCL Technologies Ltd.
02.2009 - 06.2009

Mainframe Developer

IBM/ACS Ltd
06.2007 - 01.2009

Bachelor of Technology - Computer Science

Jawaharlal Nehru Technological University
04.2001 -
Karthik DeviData Engineer/Lead Mainframe Developer