Summary
Overview
Work History
Education
Skills
Project Highlights
PROJECT HIGHLIGHTS
Timeline
Generic

SAI SREEKAR YAJAMANAM

Bengaluru

Summary

Data Engineer with over 5 years of experience in designing, testing, and maintaining data management systems. Expertise in database design and data mining enhances business decision-making capabilities. Achievements include optimizing data retrieval processes and significantly improving system efficiency.

Overview

7
7
years of professional experience

Work History

QA Data Engineer

DILIGENT GLOBAL
Hyderabad
03.2024 - 02.2025
  • Collaborated with Product Owners to define features, write acceptance criteria, and iteratively groom user stories.
  • Supported testing of cloud migration projects involving AWS S3 and Athena for analytics workloads.
  • Designed and built scalable ETL pipelines for the ingestion and transformation of high-volume data using Snowflake and Python.
  • Validated data across Oracle DBs, data lakes, and Tableau dashboards to ensure end-to-end consistency.
  • Participated in agile development processes, contributing to sprint planning, stand-ups, and reviews to ensure timely delivery of data projects.
  • Partnered with data engineers and analysts to troubleshoot complex data discrepancies.
  • Maintained documentation for compliance audits and validation protocols.
  • Optimized existing queries to improve query performance by creating indexes on tables.
  • Developed and implemented Tableau dashboards to provide insights into business metrics.
  • Created complex reports using various types of charts and graphs to visualize data trends.
  • Created visual representations of product categories and relationships, using Tableau dashboards to highlight desired aspects of key financial and performance indicators.

ETL Developer / QA Analyst

Tyson Foods Inc
Bengaluru
09.2022 - 12.2023
  • Built ETL jobs for data migration and reporting using Snowflake.
  • Analyzed system requirements to create test cases.
  • Executed manual and automated tests in different environments.
  • Conducted functional and integration testing of ETL workflows.
  • Led data reconciliation initiatives between Oracle systems and the BI layer.
  • Worked with analysts to automate test cases and improve data quality.
  • Monitored performance of the ETL processes by creating log files with SSIS logging features.
  • Designed and developed stored procedures, functions, views and triggers using T-SQL for efficient data transformation.
  • Performed unit testing of all the mappings developed in the ETL layer before delivering it to production environment.
  • Optimized queries by analyzing query plans using SQL profiler tool.
  • Evaluated source systems data quality and identified opportunities for improvement.
  • Involved in creating database objects such as tables, views, indexes based on business requirements.
  • Developed and managed enterprise-wide data analytics environments.
  • Implemented best practices for optimizing the performance of Tableau reports and dashboards.
  • Performed unit testing on all created reports and dashboards prior to production deployment.
  • Assisted in designing and developing ETL processes to extract data from multiple sources into a single repository for analysis in Tableau.

Junior Data Engineer

Asseton technologies Pvt Ltd
Chennai
07.2018 - 02.2022
  • Assisted in the development of batch data pipelines and data cleansing.
  • Supported performance tuning and wrote complex SQL queries.
  • Participated in Agile ceremonies, and supported CI efforts.
  • Optimized existing databases for better performance by indexing columns or rewriting queries.
  • Created and optimized SQL queries to retrieve large datasets for analysis.
  • Maintained version control systems like GitLab and GitHub for tracking code changes.
  • Closely monitored data warehouse functionality and performance, proactively responding to issues.
  • Involved in migrating on-premise RDBMS to Snowflake EDW.
  • Interact with the business team and understand the use cases.
  • Interact with the Source team to understand feed structures, data volume, and frequency.
  • Design, develop, test, implement, and support data warehousing ELT.
  • Worked on bulk and continuous data ingestion using COPY SnowPipe.
  • Created internal and external stages, and transformed data during load.
  • Used core components, i.e., types of tables and cloning, time traveling, streams, and tasks.
  • Writing SnowSQL queries against Snowflake.
  • Developing scripts to extract, load, and transform data.
  • Worked closely with other team members to identify and remove software bugs.

Education

Bachelor of Technology - Electronics And Communication Engineering

GITAM University
Bengaluru
07-2017

Skills

  • ETL processes
  • Data warehousing and modeling
  • Data ingestion and quality
  • Oracle, SQL Server, and MySQL
  • Apache Airflow
  • Tableau
  • Snowflake
  • Version control with Git
  • Project management with JIRA
  • Python programming
  • AWS cloud services
  • Agile and Scrum methodologies
  • CI/CD practices with Git
  • Test automation strategies
  • Data compliance and migration
  • Data reconciliation

Project Highlights

  • Data Compliance Platform, Diligent Global, Developed compliant ETL workflows ensuring validation., Performed rigorous data testing and validation for audit readiness., Integrated monitoring with Tableau for stakeholder dashboards.
  • Customer 360 Platform, Tyson Foods Inc, Integrated multiple source systems into a unified customer view., Validated data lineage and transformation logic from ingestion to BI reports.

PROJECT HIGHLIGHTS

  • Built test frameworks to validate ingestion pipelines from external sources into Oracle, transformed with DBT, and reported via Tableau
  • Ensured traceability and audit readiness by maintaining comprehensive test cases, test evidence, and data lineage documents

Timeline

QA Data Engineer

DILIGENT GLOBAL
03.2024 - 02.2025

ETL Developer / QA Analyst

Tyson Foods Inc
09.2022 - 12.2023

Junior Data Engineer

Asseton technologies Pvt Ltd
07.2018 - 02.2022

Bachelor of Technology - Electronics And Communication Engineering

GITAM University

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