Summary
Overview
Work History
Education
Skills
Websites
Accomplishments
Certification
Languages
Timeline
Generic

Punithkumar L

Bengaluru

Summary

Results-oriented Data Engineering professional aiming to contribute to enterprise-scale data platform development, real-time data processing, and data governance initiatives that support strategic decision-making and business transformation.

  • Accomplished Data Engineering Professional with 12 years of progressive experience in designing, developing, and maintaining scalable data platforms and solutions in cloud and on-prem environments.
  • Proficient in Snowflake , Oracle PL/SQL and Pyspark with hands-on expertise in implementing real-time data pipelines using Kafka, Snowpipe, and Streams/Tasks to support automated and efficient data ingestion.
  • Adept at data modeling and advanced programming, developing stored procedures, packages, and performance-tuned solutions to manage complex data transformations.
  • Extensive experience with AWS and Snowflake, including high-volume data computation and aggregation.
  • Demonstrated ability to design and implement ELT workflows with a strong focus on data quality, governance, and automation, leveraging CI/CD tools like GitLab, Cron Jobs, and Airflow.
  • Skilled in performance tuning using spark history server and Snowflake Query Profiler, ensuring optimized execution of data processes and efficient warehouse usage.
  • Strong communication and collaboration skills, with experience interacting directly with clients for requirement analysis, design discussions.
  • Known for a solution-oriented mindset, adaptability to evolving data technologies, and consistent delivery of high-quality results in fast-paced project environments.
  • Designed layered DBT models (staging, intermediate, mart) to abstract raw patient data from multiple sources (EHR, claims, demographics).
  • Applied Jinja templating and ref macros to ensure reusable, maintainable SQL logic across models.

Overview

12
12
years of professional experience
1
1
Certification

Work History

Senior Data Engineer

IQVIA
Bengaluru
01.2022 - Current

Data Engineering & Real-Time Ingestion:

  • Pipeline Development: Designed and deployed real-time ingestion pipelines using Kafka, Spark, Airflow, and Snowpipe, improving data freshness and availability.
  • Streaming Integration: Integrated Kafka with Snowflake for event-driven ingestion, enabling real-time analytics.

Database Design & Development:

  • Built and maintained a data model in Snowflake for reporting needs.
  • Engineered a high-efficiency data model that boosted query performance by 50%.
  • Orchestrated a data pipeline within Snowflake using tasks and DAGs for observability.

ETL & Data Transformation:

  • Developed scalable ETL pipelines using Kafka and PySpark to ingest and transform real-time streaming data, reducing processing latency by 40%.
  • Orchestrated complex data workflows with Apache Airflow, integrating Snowflake for high-performance analytics, and ensuring end-to-end data reliability across batch and streaming jobs.
  • Optimized transformation logic in PySpark and Snowflake, enabling schema evolution and dynamic partitioning, which improved query performance and reduced compute costs by 30%.
  • Configured tasks in Snowflake to automate and schedule data pipeline execution.

Performance Tuning & Optimization:

  • Tuned complex SQL queries using Query Profiler to improve performance and reduce costs using Snowflake clustering, search optimization, and one big table concepts.
  • Reduced execution time of heavy workloads by optimizing code logic and query plans.

Collaboration and Communication:

  • Worked closely with DevOps, data analysts, and business teams to align technical solutions with operational needs.
  • Designed and maintained detailed technical documentation for the data model and architecture.

Data Engineer

EMIDS
Bengaluru
03.2019 - 12.2021
  • Snowflake and Oracle Development: Engineered stored procedures, functions, and triggers to execute business-critical logic within the investment platform.
  • Code Optimization: Refactored existing PL/SQL modules to improve performance and reduce system latency.
  • Performance Tuning: Enhanced SQL performance using Explain Plan to analyze and optimize complex query execution.
  • Project Compliance: Ensured adherence to coding standards and documentation protocols throughout the development lifecycle.

Senior Consultant

Aris Global
Bengaluru
05.2017 - 04.2019
  • PL/SQL Development and Optimization: Developed and enhanced stored procedures, functions and complex PL/SQL code to support pharmaceutical data operations, migration, and improve system efficiency.
  • Advanced Oracle Programming: Utilized ref cursors, collections, and bulk operations for high-volume data handling in regulated environments.
  • Performance Tuning: Improved SQL performance using Explain Plan and query optimization techniques to minimize latency.

Technology Analyst

Infosys
Bengaluru
08.2016 - 05.2017
  • PL/SQL Development and Optimization: Developed and enhanced stored procedures, functions, triggers, and complex PL/SQL code to support pharmaceutical data operations, and improve system efficiency.
  • Database Design & Management: Modeled and implemented relational database objects (tables, indexes, sequences, constraints) to ensure data integrity and performance.

Senior Systems Engineer

Tata Consultancy Services
Bengaluru
07.2013 - 07.2016
  • PL/SQL Development & Optimization: Developed and enhanced stored procedures, functions, triggers, and complex PL/SQL code to support pharmaceutical data operations and improve system efficiency.
  • Database Design & Management: Modelled and implemented relational database objects (tables, indexes, sequences, constraints) to ensure data integrity and performance.

Education

Bachelor of Engineering (B.E.) - Electrical & Electronics Engineering

SJCE
Mysore
06-2013

Skills

  • Programming & Scripting: SQL, PL/SQL, Python and Unix
  • Databases & Warehousing: Oracle, Postgres and Snowflake
  • Cloud: AWS ( EMR, S3, MSK, EC2, Lambda) and Azure (ADF, ADLS, KeyVault, SQL server)
  • Data integration and ETL: Kafka, Azure Data Factory, Snowpipe, Spark(Pysaprk) and DBT
  • Orchestration and CI/CD: Airflow, GitLab, and Bamboo
  • Tools and utilities: VS Code, Cursor, SQL Developer, TOAD, Snow Sight, and Git Bash
  • File formats: JSON, Parquet and CSV

Accomplishments

IQVIA - Performance Optimization Award, Earned Gold and Platinum awards for significantly enhancing patient registry performance and reducing processing time through strategic tuning and workflow improvements and building the data models.

Certification

  • Snowflake and DBT Certification from Udemy.
  • Data Engineering hands on training certification from Trendytech.

Languages

English
First Language

Timeline

Senior Data Engineer

IQVIA
01.2022 - Current

Data Engineer

EMIDS
03.2019 - 12.2021

Senior Consultant

Aris Global
05.2017 - 04.2019

Technology Analyst

Infosys
08.2016 - 05.2017

Senior Systems Engineer

Tata Consultancy Services
07.2013 - 07.2016

Bachelor of Engineering (B.E.) - Electrical & Electronics Engineering

SJCE
Punithkumar L