Rajat
Data Scientist
Patna
Summary
Results-driven Data Scientist with expertise in advanced analytics and machine learning. Demonstrated ability to leverage data-driven insights to drive business growth and optimize decision-making processes. Proven track record of developing predictive models and implementing data-driven strategies. Strong proficiency in Python, AWS, and data preprocessing techniques.
Overview
5
5
years of professional experience
4
4
years of post-secondary education
2
2
Languages
Work History
Data Scientist | Advanced Analytics
PwC
Mumbai
06.2022 - Current
- Conducted data science analysis and developed advanced analytics models to drive business insights and decision-making.
- Assisted clients in researching and building data pipelines in AWS cloud, performing data preprocessing, and implementing data engineering techniques.
- Applied data science techniques to identify key customer pain-points and uncover valuable insights for addressing business challenges.
- Leveraged Python and PySpark to analyze large datasets (3 TB) and design ETL pipelines to extract, transform, and load data efficiently.
- Utilized AWS technologies, including Athena and QuickSight, to query and visualize data, enabling data-driven decision-making for clients.
- Collaborated with the COE team and business owners to understand requirements, deliver meaningful insights, and support data-driven decision-making processes.
- Played a key role in improving data quality and accuracy through the development and implementation of data cleaning and preprocessing techniques.
- Contributed to the development of predictive models, including a conversion probability scoring model, resulting in a significant increase in conversion rates.
- Presented analysis and findings to business users in a clear and digestible manner, facilitating understanding and informed decision-making.
- Collaborated with cross-functional teams to develop backend solutions using Node.js and build microservices that seamlessly integrate with separate Lambdas in AWS.
- Developed APIs that trigger Lambdas and API Gateway, enabling efficient data flow and system integration.
- Created Swagger documentation for the developed APIs, ensuring clarity and ease of use for other team members.
- Contributed to backend development efforts by working on the serverless.yml file and deploying microservices to Jenkins.
- Actively participated in unit testing activities to ensure the quality and reliability of the developed solutions.
- Played a crucial role in the successful implementation and maintenance of the project.
Data Scientist
Tata Consultancy Services
Bangalore
01.2020 - 06.2022
- Developed machine learning models to predict customer behavior and improve marketing effectiveness.
- Worked with stakeholders to develop business requirements and identify data sources.
- Worked with 1 TB of data near about 10 million records various that are scraped from company's data and leveraged from various databases. The business objective was to automate the loan eligibility process based on current information and increase the model evaluation metrics by decreasing log loss by 2%.
- Utilized Web scraping techniques to extract and organize competitor data, ultimately saving the company $250k in research costs
Education
BTECH - Mechanical Engineering
Kalinga Industrial Institute of Technology
Bhubaneshwar 04.2014 - 05.2018
Skills
Machine learning
Data Science
Predictive Modeling
Data Preprocessing
Python
Sql
Pyspark
AWS (Athena, QuickSight)
ETL Pipeline Development
Data Cleaning
Data Engineering
Backend Development (Nodejs)
Microservices Architecture
API Development
Swagger Documentation
Serverless Framework
Jenkins
Unit Testing
Statistical Analysis
Web Scraping
Problem Solving
Agile framework understanding
Accomplishments
- Received R&R (Recognition and Reward) award at PwC for delivering an efficient solution to a client within the given time frame, despite working with a completely new tech stack. Showcased dedication by working on weekends to ensure timely deliverables and received appreciation from the client.
- Selected to work in the advanced analytics team at PwC, standing out among a limited number of individuals chosen to be part of the best research team in the company focused on data. Had the opportunity to lead the team on a project, demonstrating strong leadership and expertise.
- Awarded the Best Innovator award at TCS for showcasing exceptional innovation skills and contributions to the field of data science.
- Won the data science hackathon conducted at TCS, competing against 15 teams comprising participants from various organizations in Bengaluru.
Additional Information
- .Participated in many Kaggle competitions,hackathons etc..
- Did course on machine learning from ineuron and did a course on zero to mastery Data Science by Andrew Ng.
- Did project on NLP tasks like web scrapping invoices and build model that can predict the bill amount.
- Did projects like Quora Question Pair Similarity,Bangalore house price prediction,movie recommendation system etc.
Timeline
Data Scientist | Advanced Analytics
PwC
06.2022 - Current
Data Scientist
Tata Consultancy Services
01.2020 - 06.2022
BTECH - Mechanical Engineering
Kalinga Industrial Institute of Technology
04.2014 - 05.2018