Shailaja S N
@shailajasn
Senior Data Engineer specializing in large-scale ETL, cloud data platforms, and generative AI enablement.
IndiaWhat I'm looking for
I am a Senior Data Engineer with over 10 years in the software industry, focused on building configuration-driven, large-scale data pipelines and data warehousing solutions across retail, digital marketing, and financial domains.
At WalmartGlobalTech I design and operate Hadoop and BigQuery-based pipelines using Apache Spark (Scala), Airflow scheduling, and Erwin data modeling, while driving automation, cost optimization, and GenAI data readiness.
I have a track record of performance improvements—reducing pipeline runtimes and manual interventions—contributed to internal CoE efforts, published a white paper on automated damage detection, and actively seek fully remote roles to continue growing in data-driven environments.
Experience
Work history, roles, and key accomplishments
Senior Data Engineer
Walmart Global Tech
May 2022 - Present (3 years 5 months)
Designed and built configuration-driven data pipelines to ingest third-party sales, competitor, and consumer profile data into Hadoop and BigQuery, improving data accessibility for Marketing and Campaign teams and optimizing cloud costs via parallel processing and ephemeral clusters.
Big Data Developer
PwC India
Feb 2020 - May 2022 (2 years 3 months)
Designed, enhanced and supported marketing data pipelines (spend, traffic, finance) and implemented optimizations and automations in Apache Spark that reduced pipeline run time and manual interventions by 50%.
Data Engineer
Cognizant
May 2019 - Feb 2020 (9 months)
Reconciled, monitored and tracked membership data health for the Retail Eligibility Hub, and developed data flows using Hive and Apache Spark to improve system visibility and reliability.
Data Engineer
Capgemini
Aug 2015 - May 2019 (3 years 9 months)
Built business access and semantic layers on the data lake/warehouse and created large-scale pipelines to load S3 files into AWS Athena, and developed in-house automation tools for testing and data comparisons.
Education
Degrees, certifications, and relevant coursework
Canara Engineering College
Bachelor of Engineering, Electrical and Electronics Engineering
2011 - 2015
Grade: 73%
Completed Bachelor of Engineering in Electrical and Electronics Engineering with 73% between 2011 and 2015.
Vivekananda Pre University College
PUC, Pre-University Course
2009 - 2011
Grade: 79%
Completed Pre-University Course (PUC) with 79% from 2009 to 2011.
Sri Gurudeva Kannada Medium Highschool
SSLC, Secondary Education
2008 - 2009
Grade: 88%
Completed SSLC with 88% in 2009.
Tech stack
Software and tools used professionally
Availability
Location
IndiaAuthorized to work in
Job categories
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