Dharshan B

Dharshan B

Data Engineer
India
Tamil, English

About Me

Data Engineer with 3+ years of experience in service-based projects, specializing in building and automating scalable ETL pipelines using Databricks, PySpark, and Snowflake. Strong experience in L2/L3 application support…

Experience

Data Engineer

Cognizant Technology Solutions · chennai
Aug 2022 - Present · 3 years 10 months

• Designed and developed scalable ETL pipelines in Databricks using PySpark for hourly and dailyRAN KPI datasets.• Automated KPI master, formula, and core table synchronization improving data consistency.• Built data quality frameworks including missing-hour detection and source-to-target validation.• Orchestrated multi-notebook workflows with parameterized and scheduled jobs.

Associate

Cognizant Technology Solutions
Aug 2022 - Present · 3 years 11 months

Designed and developed scalable ETL pipelines in Databricks using PySpark for hourly and daily RAN KPI datasets.
Automated KPI master, formula, and core table synchronization improving data consistency.
Built data quality frameworks including missing-hour detection and source-to-target validation.
Orchestrated multi-notebook workflows with parameterized and scheduled jobs.
Delivered L2/L3 production support for enterprise applications, handling incident management and SLA-based resolution.
Performed root cause analysis and implemented permanent fixes using Java and Oracle SQL.
Coordinated during outages and high-priority incidents to restore services.
Supported deployments, post-production validation, and defect resolution.

Associate

Cognizant Technology Solutions - Chennai
Aug 2022 - Present · 3 years 11 months

Designed and developed scalable ETL pipelines in Databricks using PySpark for hourly and daily RAN KPI datasets., Automated KPI master, formula, and core table synchronization improving data consistency., Built data quality frameworks including missing-hour detection and source-to-target validation., Orchestrated multi-notebook workflows with parameterized and scheduled jobs., Delivered L2/L3 production support for enterprise applications, handling incident management and SLA-based resolution., Performed root cause analysis and implemented permanent fixes using Java and Oracle SQL., Coordinated during outages and high-priority incidents to restore services., Supported deployments, post-production validation, and defect resolution.

Skills

Java MySQL Oracle Python Structured Query Language (SQL) PySpark Angular Databricks Snowflake Git Postman Swagger UI Spring Boot Apache Spark ETL Pipelines
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