Nagesh K

Data Engineering and Big Data professional with 14+ years of experience across data pipeline development, distributed processing, enterprise application delivery, production support, and technical leadership. Experienced in Hadoop, Apache Spark, PySpark, Java, Scala, SQL, and data integration across enterprise environments. Skilled in translating business requirements into technical solutions, improving processing performance, supporting data quality and governance, and coordinating delivery across teams.

Hadoop Technology Lead - Citi Corp Services India Pvt. Ltd. - Chennai

(2018-03)

• Develop and maintain data pipelines using Hadoop technologies and Apache Spark, supporting implementation, maintenance, and enhancements.
• Improve processing performance by evaluating Hadoop algorithms and using Spark Context, Spark SQL, DataFrames, RDDs, and Spark on YARN.
• Support production operations, incident resolution, preventive and corrective maintenance, and review of functional specifications.
• Establish Big Data project frameworks and release practices; estimate effort, identify delivery risks, and coordinate engineering initiatives across teams.
• Work with business managers, developers, and data science teams to investigate root causes, resolve data issues, and implement analytics pipelines.
• Support data governance, data versioning, data privacy, validation, CI/CD, build and release activities, and production sanity testing.
• Design scalable data stores and ingestion/processing systems; apply data validation and cleansing to improve data consistency and accuracy.

Senior Software Engineer - UnitedHealth Group (Optum) - Bengaluru

(2015-06 - 2018-03)

• Worked on the PCCM healthcare pilot using Java and Hadoop ecosystem technologies including HDFS, Spark, Sqoop, Hive, HBase, Talend, Cassandra, and Control-M.
• Supported data processing and integration activities in Windows and Linux environments.

Senior Software Engineer - HCL Technologies - Bengaluru

(2014-01 - 2015-06)

• Contributed to the DBIQ project for Deutsche Bank, supporting financial index data workflows, platform migration, production support, dependency tracking, and team knowledge transfer.

Systems Engineer - Infosys Limited - Bengaluru

(2012-06 - 2014-01)

• Worked on the WindTunnel project for American Express using Java/J2EE, Spring, JavaScript, Hibernate, and Oracle in Windows/Linux environments.

Software Engineer - Municipal Reforms Cell, Karnataka State Government - Bengaluru

(2009-06 - 2012-02)

• Contributed to a birth and death records application supporting online registration and computerized certificate services for urban local bodies.

B.Tech. - Electrical and Electronics Engineering - JNTU University, Hyderabad (2006)