Ratnam D.

Product Engineer

Chennai, Tamil Nadu, India12 yrs 4 mos experience

Highly Stable

Key Highlights

3+ years of experience in Data Science.
Hands-on experience with machine learning algorithms.
Active participant in Kaggle competitions.

Stackforce AI infers this person is a Data Science professional with expertise in Cloud Computing and Healthcare analytics.

Contact

ratnamdubey001@gmail.com LinkedIn

Skills

Core Skills

Data GovernanceEtlMachine LearningData MigrationData ScienceData Analysis

Other Skills

Extract, Transform, Load (ETL)SQLKafka StreamsApache KafkaCustomer SuccessDatabasesPythonPysparkAWSSparkAthenaPython (Programming Language)Exploratory Data AnalysisLarge-scale Data AnalysisR

About

I have Masters in Data Science at the Texas Tech University. Enthusiast Learner, Creative and Data Lover worked on Several Kaggle competitions to learn and having Data Science Skill Set. Having 3+ years of Experience as Data Science Analyst and worked in Cognizant Technology Solutions for Client name Novartis Pharmaceuticals (Life science Domain) Hand-on Experience in using supervised and unsupervised learning algorithms in machine learning and statistical modeling. Active Kaggler - Participated and Achieved Ranks in Kaggle Competition Skills: Machine Learning: Regression Analysis (Linear, Non-Linear), SVM, Neural Net, Sentimental Analysis, Cluster Analysis, Text Mining, Hypothesis Testing, Decision Trees, PCA, KNN, Spark, PySpark, Azure ML-Lib. Programming: R (Cluster, tree, nnet, caret, H2O), Python (ggplot, Pandas, NLTK, Scikit learn, ML-Lib) BI Tools: Hadoop, Data Stage, Informatica, Knime, Congos, Tableau, SAS, Oracle, MSSQL, Azure Cloud Services. Currently seeking full-time opportunities in Data science, Advance Data Analytics, Predictive Modelling.

Experience

12 yrs 4 mos

Total Experience

2 yrs

Average Tenure

3 mos

Current Experience

Starburst

Resident solution architect

Mar 2026 – Present · 3 mos · Chennai, Tamil Nadu, India · Remote

Confluent

Advisory solutions engineer / ( CSC )

Dec 2024 – Jan 2026 · 1 yr 1 mo · Chennai · Remote

Extract, Transform, Load (ETL)SQLKafka StreamsApache KafkaData GovernanceCustomer Success+1

Cloudera

3 roles

Senior Solutions Consultant

Apr 2024 – Dec 2024 · 8 mos

Senior Solutions Consultant

Jan 2024 – Apr 2024 · 3 mos

Solutions Consultant

Apr 2021 – Apr 2024 · 3 yrs

DatabasesExtract, Transform, Load (ETL)SQLMachine LearningPythonETL

Exl

Sr. Analytics Consultant

Dec 2018 – Apr 2021 · 2 yrs 4 mos · Houston, Texas, United States

Project: Data Migration to AWS
Tools and Technologies Used– Pyspark, AWS, Spark, Athena
Manage data migration workstream and developed the road map to migrate on-premises data to AWS.
Developed automatic scripts to collect, clean and transform data from data sources using Pyspark.
Developed a tool named “Hammurabi” which checks the quality of the data and generates reports for the
end users.
Deployed the whole project in the “airflow” server for delivering the data to various data analytics stream.
Developed ETL processes and data pipelines for customer insights
Deployed CloudFormation templates for all AWS environments, streamlining data engineering process by 40%

Extract, Transform, Load (ETL)Databases

Adams land and cattle, llc

Data Scientist

Dec 2017 – Nov 2018 · 11 mos · Lincoln, Nebraska Area

Collaborated with various internal teams and End User to gather business requirements & build the data layout.
Automated data collection process with the help of Knime.
Created Machine Learning Models in MLLib Library to Predict Daily DMI (Feed for the Cattles)
Created Apache Spark Data frames to significantly reduce the query execution time by more than 70%.
Deployed Machine Learning Module in Production System Using PMML Format and Presented the Results in Power BI Dashboard.

DatabasesPython (Programming Language)Exploratory Data AnalysisData AnalysisData ScienceLarge-scale Data Analysis+1

Texas tech university health sciences center

Graduate Student Assistant

Aug 2016 – Jun 2017 · 10 mos · Lubbock, Texas Area

Assisting the Manager in developing and maintaining the University Website.
Created Surveys and Perform Analytics based on the Customer Feedback.
Imaging and managing medical records and other document on IIS servers with strict adherence to HIPAA standards.

Cognizant technology solutions

Data Modeller and BI Devloper

Apr 2013 – Jul 2016 · 3 yrs 3 mos · Pune Area, India

Role: Programmer Analyst, Client: Novartis Pharmaceuticals
Project: NPC Managed Services – Goal of Project is transition of prescriber’s and sales team data into Data-ware House which involves cleaning, managing, and loading of data into warehouse and perform statistical analysis to the client for making better business decision using Tableau and SAS.
Tools Used– R, Tableau, Macros(Excel), SAS, Oracle, Unix, Hadoop
Analyzed and Forecasted the drug sales in a geographic location for some specific products in R.
Optimized data models, performed statistical analysis and shared business insights using effective data visualization skills and dashboards using Tableau and Cognos.
Role: BI Developer, Client: Novartis Pharmaceuticals
Project: Alcon Services - Goal of Project is to load Client data into Data warehouse and perform various analytics.
Tools Used– Oracle, Cognos, Informatica, Data Stage 8.5
Transformed the raw data of client in well-formed knowledge driven data with the help of ETL tools.
Created SQL procedures, functions, and performance tunings for database efficiency, also Troubleshooting, tracking, and investigating data related issues and communicated the analytical results through data visualization techniques