Summary
Overview
Work History
Education
Skills
Languages
Timeline
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ASWIN S WARRIER

Kochi

Summary

Dynamic Cloud and Data Engineer with over three years at Cognizant, excelling in ETL development and cloud migration. Proficient in Azure Databricks and PySpark, I optimized data workflows and facilitated stakeholder collaboration, driving successful project outcomes. Committed to continuous improvement and enhancing team capabilities through knowledge sharing.

Overview

4
4
years of professional experience

Work History

Associate

COGNIZANT
Kochi
05.2025 - Current
  • Currently, I am working on the migration of legacy Databricks assets to Unity Catalog, aligning with enterprise data governance standards.
  • Refactored and validated PySpark and SQL notebooks for Unity Catalog's three-level namespace and access control.
  • Modified ADF pipelines for seamless integration with Unity Catalog-enabled workspaces, ensuring secure data access.
  • Converted Hive-based tables to Delta tables compliant with Unity Catalog, preserving data lineage and performance.
  • Executed validation and testing procedures post-migration to ensure schema consistency and job reliability.
  • Documented migration processes, challenges, and best practices to aid future cross-team UC adoption.

Associate

Cognizant
Kochi
01.2024 - Current
  • Optimized end-to-end data workflows using PySpark, SQL, and Informatica PowerCenter to enhance processing efficiency.
  • Collaborated with stakeholders including data analysts, business users, and product teams to resolve data-related issues swiftly.
  • Designed scalable data pipelines in Azure Databricks, facilitating efficient transformations for large data volumes.
  • Executed data engineering processes including ETL, cleansing, normalization, and enrichment to ensure high-quality datasets.
  • Leveraged Azure Data Factory and Azure Synapse Analytics to create integrated analytics solutions across platforms.
  • Developed ADF pipelines for ingestion tasks, automating execution of Databricks notebooks from Informatica mappings.
  • Participated in full-cycle code releases, ensuring quality deliverables through rigorous migration and validation processes.

Programmer Analyst

COGNIZANT
Kochi
11.2021 - 12.2023
  • Converted legacy Informatica workflows to Snowflake-compatible code, streamlining ETL modernization initiative.
  • Diagnosed and resolved complex ETL job failures, significantly reducing turnaround time and enhancing reliability.
  • Designed data validation checkpoints and Data Quality Index (DQI) jobs to improve audit compliance.
  • Managed job creation and scheduling in Control-M, ensuring timely ETL process execution.
  • Oversaw complete Control-M environment setup for effective job monitoring and rapid troubleshooting.
  • Monitored production Control-M jobs daily, proactively identifying issues to maintain SLA compliance.
  • Conducted knowledge transfer sessions for new team members, enhancing overall technical proficiency.
  • Facilitated data ingestion from flat files and Oracle databases into Snowflake for centralized warehousing.

Education

Master of Technology - Data And Computational Science

IIT
Jodhpur
07-2024

Bachelor of Technology - Mechanical Engineering

Sree Chitra Thirunal College of Engineering
Trivandrum
07-2021

Senior Secondary -

GMBHSS
Haripad
03-2017

Skills

  • Cloud engineering
  • ETL development
  • Azure Data Factory and Databricks
  • PySpark
  • SQL management
  • Data warehousing
  • Informatica PowerCenter
  • Job scheduling tools
  • Snowflake database
  • Teradata analytics

Languages

Malayalam
First Language
English
Proficient (C2)
C2
Tamil
Intermediate (B1)
B1

Timeline

Associate

COGNIZANT
05.2025 - Current

Associate

Cognizant
01.2024 - Current

Programmer Analyst

COGNIZANT
11.2021 - 12.2023

Master of Technology - Data And Computational Science

IIT

Bachelor of Technology - Mechanical Engineering

Sree Chitra Thirunal College of Engineering

Senior Secondary -

GMBHSS

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