Chandan Kumar Ojha
Lead Data Scientist
New Delhi
Summary
Data Science and Engineering professional with 12+ years of experience in predictive modeling, data mining, ETL, analytics, automation, and application development. Expertise in building scalable data pipelines, creating efficient ETL workflows, and optimizing complex SQL queries. Skilled in Python-based web crawling for data enrichment, data visualization. Experienced in leveraging technologies like Airflow, Docker, and CI/CD pipelines for robust deployments.
Overview
14
14
years of professional experience
2
2
Languages
Work History
Lead Developer - Data Science
Cars24
01.2022 - Current
- Led the development and deployment of end-to-end data extraction systems using Django and Scrapy, facilitating the analysis of competitor data for strategic benchmarking.
- Spearheaded the design and implementation of predictive models that identified high and low-intent user bookings, optimizing the delivery process and increasing lead conversion rates.
- Directed the optimization of sourcing workflows, leading efforts to deprioritize low-probability leads, thereby improving operational efficiency and resource allocation.
- Designed and implemented advanced ranking models to enhance the user experience, improving click-through rates (CTR) by leveraging clickstream data and car attributes.
- Developed and automated data extraction systems for car details (Make, Model, Variant, Year) from registration numbers, reducing manual errors and improving inspection accuracy.
- Led the creation of automated privacy-compliant solutions for masking vehicle numbers in images during inspections, ensuring compliance with industry standards and safeguarding user data.
- Mentored and guided junior developers and data scientists in the application of machine learning algorithms, model deployment, and data engineering best practices.
- Collaborated cross-functionally with business, product, and engineering teams to ensure data science solutions were aligned with organizational goals and deliverables.
- Championed best practices for data science model development, model monitoring, and iterative improvements, contributing to the scaling and long-term success of projects.
Lead Data Science & Analytics
MEDDO.IN
11.2018 - 01.2022
- Built a ranking model that improved the click-through rate (CTR) for users landing on the page, utilizing clickstream data and doctor/clinic/hospital/location/user profile for more effective ranking.
- Designed, implemented, and managed ETL pipelines and data warehouses to streamline data processing and storage.
- Developed and maintained web-based utilities and applications, significantly reducing manual tasks and improving operational efficiency.
- Collaborated with business teams to identify and implement process improvements, driving productivity and workflow optimization.
- Managed a data visualization platform, ensuring seamless access to critical data across departments for informed decision-making.
- Created and automated utility tools to generate KPI-based reports from the data warehouse, providing actionable insights for business performance tracking.
Programmer Analyst, Business Intelligence(BI)
FOODPANDA.IN
03.2016 - 11.2018
- Achieved a fully automated, seamless workflow with no manual intervention, increasing efficiency and accuracy.
- Developed a system integrating Zendesk ticketing with payment gateways (Paytm, PayU, Freecharge, and MobiKwik), streamlining payment processing.
- Automated ticket fetching, order status checks, and full/partial refund initiation based on ticket details, reducing manual effort.
- Resolved tickets automatically post-refund, significantly cutting processing times and improving customer service efficiency.
- Designed and implemented crawlers to extract vendor and product data from competitors such as Swiggy and Zomato, enhancing market analysis.
- Built a utility to synchronize data from Google Analytics (Big Data) to a centralized data warehouse, optimizing data access and reporting.
- Enhanced product metadata by tagging items (e.g., Veg/Non-Veg), enriching descriptions, categorizing cuisines, and assigning budget ranges for better searchability.
- Developed an interactive geo-visualization tool powered by Google Maps for location-based business insights.
- Created a Python and Django-based dashboard application to monitor and visualize overall business performance, aiding decision-making.
- Built a machine learning model to segment customers into tiers (Platinum, Gold, Silver, Blue) based on order history for personalized marketing strategies.
- Automated the process of fetching approved deal data from Salesforce and creating corresponding backend entries, eliminating manual data entry.
- Enhanced vendor branding by dynamically editing vendor logos with deal percentages and uploading them to the system for better presentation.
Sr. MIS Executive
Serco Global Services
03.2012 - 03.2016
- Managed data extraction, transformation, and loading (ETL) processes to ensure high-quality data integration across systems.
- Conducted in-depth analysis of operational data to identify trends, provide insights, and recommend actions for process improvement.
- Streamlined the process of data collection and reporting by developing automated tools and solutions, reducing manual effort and increasing efficiency.
- Developed and maintained dashboards and visualizations to provide real-time insights on business performance, trends, and KPIs.
- Coordinated with cross-functional teams to define reporting requirements and ensure data accuracy, consistency, and accessibility.
- Implemented and maintained automated reporting processes, ensuring timely and accurate delivery of key business metrics to stakeholders.
Programmer (CSS-Typesetting)
APTARA CORPORATION
11.2010 - 03.2012
Education
Master of Science - Computer Science
01-2015
Bachelor of Science - Information Technology
08-2010
12th - Science
03-2007
High School -
03-2005
Skills
XGBoost
CatBoost
Scikit-learn
Pandas
numpy
GenrativeAI
MLOPS
ETL
SQL
Web Crawling
Web Scraping
Python
Scrapy
Requests
BeautifulSoup
Selenium
Excel
SQL
Javascript
Django
Version control management
Project management
API development
Machine learning
Service-oriented architecture
Linux
Continuous integration
Git proficiency
API integration
RESTful services
Personal Information
- Date of Birth: 03/20/90
- Gender: Male
- Nationality: Indian
- Marital Status: Married
Timeline
Lead Developer - Data Science - Cars24
01.2022 - Current
Lead Data Science & Analytics - MEDDO.IN
11.2018 - 01.2022
Programmer Analyst, Business Intelligence(BI) - FOODPANDA.IN
03.2016 - 11.2018
Sr. MIS Executive - Serco Global Services
03.2012 - 03.2016
Programmer (CSS-Typesetting) - APTARA CORPORATION
11.2010 - 03.2012
Sikkim Manipal University - Master of Science, Computer Science
Sikkim Manipal University - Bachelor of Science, Information Technology
Bihar School Examination Board - 12th, Science
Bihar School Examination Board - High School,