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Rajesh Kumar

@rajeshkumar33

Principal Data Engineer at CGI who built banking data pipelines processing 600M+ transactions daily with 99.9% uptime.

At CGI, I designed, built, and maintained Google Cloud data pipelines for a Tier-1 banking client, processing 600M+ transactions daily with 99.9% uptime. The platform enabled near-real-time analytics.

I modernized batch workloads with PySpark on Dataproc and Cloud Composer, cutting processing time by 75%. Kafka and PySpark Streaming pipelines reduced data latency by 50%.

I designed BigQuery schemas and optimized financial datasets, reducing query costs by 40%. I also applied BigQuery ML to transaction data and implemented data protections for GDPR and RBI requirements.

Earlier, at Sonata Software Pvt. Ltd, I led a team of 12 engineers on enterprise retail data migration and ETL projects. My experience also includes Oracle PL/SQL development and banking applications at CGI and Oracle Financial Services.

Experience

Work history, roles, and key accomplishments

Current

Principal Data Engineer

Current

CGI

Oct 2018 - Present (8 years 1 month)

Designed and built GCP data pipelines processing 600M+ banking transactions daily, achieving 99.9% uptime. Modernized legacy batch workloads with PySpark on Dataproc, reducing processing time by 75% and infrastructure costs by 30%.

Technical Lead

Sonata Software Pvt. Ltd

Sep 2013 - Oct 2018 (5 years 1 month)

Led a team of 12 engineers on data migration and ETL projects for enterprise retail clients using Hadoop, PySpark, Hive, and MongoDB. Built PySpark ETL pipelines on multi-terabyte datasets with attention to data quality, lineage, and SLAs.

Hadoop PySpark Hive MongoDB Sqoop Pl SQL ETL Data Migration Data Quality Data Lineage SLA Management

Senior Software Engineer

CGI

Jan 2009 - Sep 2013 (4 years 8 months)

Wrote 50+ PL/SQL stored procedures for financial reporting applications used by 10,000+ people daily, cutting data retrieval times by 40%. Led SQL performance tuning on Oracle 11g/12c and set up code review practices that reduced production defects by 25%.

Pl SQL SQL Oracle 11g Oracle 12C Performance Optimization Query Optimization Indexing Dynamic Partition Pruning Release Engineering Code Review

Associate Consultant

Oracle Financial Services

Feb 2008 - Jan 2009 (11 months)

Developed PL/SQL components and Oracle Forms for consumer lending modules in FLEXCUBE, a core banking product. Installed and configured Oracle DB and application servers on Windows and Solaris for banking environments.

Pl SQL Oracle Forms Flexcube Oracle Database Windows Solaris Banking