Nihar Dave

Data Engineer

Tata Consultancy Services (TCS)•  March 2021 - Present

Showcased expertise in ETL, SQL, Spark, and big data, driving substantial success and results. Reported an undercharge exceeding 100K QAR, effectively preventing significant financial losses for client. Collaborated with cross-functional teams ensuring seamless project execution and showcasing strong functional and technical knowledge by interacting with the business team to discuss and understand ongoing enhancements and changes at the upstream business data. Developed processes as per LLD for performing revenue assurance and validating the invoices for our client Vodafone Qatar. Managed daily operations for rating and billing of millions of CDRs and Invoice XMLs. Achieved 99% success rate for execution of processes automated through scheduling. Involved in loading, evaluating and transforming large sets of semi-structured data i.e. Parquet and XML by following the ETL process of ingestion, transformation and loading to database tables and production servers.