Summary
Overview
Work History
Education
Skills
Certification
Accomplishments
Timeline
Generic

Nirmal

Summary

12 years of total work experience in TCS played various roles with good domain knowledge and extensive education in detail-oriented Big-Data Engineer designs, develops and maintains highly scalable, secure and reliable data structures. Proficient at developing database architectural strategies at the modeling, design and implementation stages.

Overview

12
12
years of professional experience
1
1
Certification

Work History

Big Data Engineer

Nielsen
12.2020 - Current


  • Strong understanding of Spark RDD integration with other big data technologies, such as Hadoop, Hive, and Kafka, and their impact on data processing workflows and performance.
  • Expertise in implementing actions to process large-scale structured and unstructured data sets, including filtering, mapping, reducing, grouping, and aggregating data.
  • Skilled in validating and verifying data transformation rules and business logic applied during ETL processes.
  • Expertise in testing ETL transformations, such as data aggregation, filtering, sorting, and joining.
  • Proficient in using Sqoop to import and export data in various file formats such as CSV, Avro, and Parquet.
  • Experienced in integrating Sqoop with other Hadoop ecosystem components such as Hive, HBase, and Spark.
  • Skilled in leveraging Hive partitioning, bucketing, indexing, and caching features to improve query performance and reduce data processing overhead.
  • Proficient in optimizing Hive query performance by tuning various configuration settings, such as memory allocation, parallelism, and compression.
  • Excellent installation skills of Linux systems & Hadoop components Ubantube, CentOS & other Distributions. HDFS, Map Reduce & other Hadoop Ecosystems. Proficient in Linux operating systems
  • Utilized Spark for time-series forecasting.
  • Conducted Spark job performance tuning.
  • Worked with Spark for market basket analysis.
  • Created Spark applications for click fraud detection.
  • Implemented Spark Streaming for real-time alerts.

Business Analyst

Nielsen
01.2017 - 11.2020
  • Improved business processes by analyzing current practices and recommending optimization strategies.
  • Reduced operational costs through thorough data analysis and implementing cost-effective solutions.
  • Enhanced company-wide decision-making by developing comprehensive reports on key performance indicators.
  • Streamlined project management with effective communication and collaboration across cross-functional teams.
  • Increased efficiency in resource allocation by conducting detailed business requirements analysis.

Manual QA Engineer

Nielsen
01.2013 - 10.2016
  • Increased product quality by meticulously analyzing software components and identifying defects.
  • Enhanced team efficiency through clear communication and collaboration with developers to resolve issues.
  • Boosted customer satisfaction by ensuring thorough testing of applications before deployment.
  • Implemented best practices for manual testing, streamlining the QA process for improved outcomes.

Operations Specialist

Nielsen
12.2011 - 09.2016
  • Improved operational efficiency by streamlining processes and implementing new systems.
  • Reduced costs for the department by identifying areas of improvement and proposing cost-effective solutions.
  • Enhanced team productivity with effective communication strategies and regular performance reviews.
  • Boosted customer satisfaction, addressing client concerns in a timely and professional manner.

Education

Bachelor of Computer Applications -

Madras Christian College
04.2010

Skills

  • Programming Languages: Python, Java, R, SQL, Scala
  • Big Data: Hadoop, MapReduce, Hive, Apache Kafka, Apache Spark
  • Cloud Services: Amazon Web Services (AWS), Microsoft Azure, Google Cloud Platform(GCP)
  • Databases and File Systems: Cassandra, MongoDB, MySQL, Parquet, Avro, HBase
  • Unit Testing Extract, Transform, Load (ETL)
  • Tableau Jenkins Git JIRA Agile Methodologies

Certification

  • Project Management
  • Growth and Transformation
  • Cost and Optimization
  • Delivery Excellence
  • Governance and Risk Management
  • Process Development

Accomplishments

  • Service Commitment Award
  • Nielsen - Pillar and Gold Award
  • Star Performer Award
  • R&R, Client Appreciation Note.

Timeline

Big Data Engineer

Nielsen
12.2020 - Current

Business Analyst

Nielsen
01.2017 - 11.2020

Manual QA Engineer

Nielsen
01.2013 - 10.2016

Operations Specialist

Nielsen
12.2011 - 09.2016

Bachelor of Computer Applications -

Madras Christian College

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