Sanjay Singh
Verified Expert in Engineering
Full-stack Developer
New Delhi, Delhi, India
Toptal member since September 14, 2022
Sanjay is an expert in full-stack data analytics solutions, with a proven track record of building data infrastructure and analytics systems from the ground up. He has enabled product, marketing, and sales teams to make data-informed decisions by providing scalable, end-to-end analytics platforms. Sanjay has set up data lakes and warehouses using modern technology stacks, including Databricks, Azure, AWS, and Google Cloud Platform (GCP).
Portfolio
Experience
- ETL - 5 years
- Tableau - 5 years
- SQL - 5 years
- BigQuery - 3 years
- Python 3 - 2 years
- Redshift - 2 years
- Databricks - 2 years
- Azure - 1 year
Preferred Environment
Google Cloud Platform (GCP), Tableau, Dataiku, Jupyter Notebook, SQL, Amazon Redshift, Azure, Databricks
The most amazing...
...project I've built is a trial class booking methodology using tools for marketing to optimize their campaign based on conversion rates.
Work Experience
Manager Analytics
Emeritus
- Implemented an AI Tutor Bot, driving $200,000 in additional revenue and enhancing learner engagement.
- Architected cloud-native pipelines (BigQuery, Google Cloud Storage, Fivetran), cutting manual reporting time by 95% (from 40+ hours to 1 hour per week).
- Drove analytics adoption by developing an AI-powered Dashboard Discovery Agent (Vertex AI).
- Implemented event tracking infrastructure, driving an 8% increase in course completion rates.
- Optimized BigQuery workloads, reducing compute costs by 20%.
Lead Analyst
Healthplix
- Designed event-driven infrastructure (Segment and Redshift) powering real-time analytics and recommendations.
- Built dynamic segmentation pipelines that fueled a 25% increase in onboarding.
- Delivered funnel analytics to refine engagement and retention strategies.
Data Analyst
BOLD
- Analyzed A/B tests to drive KPI improvement, ensuring we ran experiments with the proper sample sizes and power levels.
- Built Mixpanel reports to track funnel drop-offs, provide insights, and recommend the following steps to the product and content team.
- Supported the product team with product ideation to identify a significant area for improvement.
Lead Data Analyst
WhiteHat Jr.
- Built scalable ETL pipelines (Athena, Salesforce, Ads, Redshift) via Fivetran, enabling cross-channel revenue insights.
- Developed forecasting models and an overbooking optimization algorithm, cutting costs by 15%.
- Automated BI reporting in Tableau, achieving 80% faster dashboard delivery.
Business Technology Associate Consultant
ZS Associates
- Analyzed the prostate cancer patient's journey and medication behavior to find gaps for improvement.
- Published a self-serve marketing budget optimization tool for various digital and non-digital channels, saving around $1 million in operating costs annually.
- Built Tableau dashboards to track sales, market share, and customer-reached performance metrics and quantified the success of marketing campaigns.
- Created advanced modeling to segment doctors for a particular brand using sales and prescription metrics.
Experience
Data Warehousing
Report and Dashboard Automation
ETL Pipeline for Pharmaceutical
Overbooking Algorithm
Revenue Prediction Model
Certifications
Introduction to Data Science in Python
Coursera
Skills
Libraries/APIs
Segment.io, Google Sheets API
Tools
Tableau, BigQuery, Google Sheets, Amazon Athena, Microsoft PowerPoint
Languages
SQL, Snowflake, Python 3, Python
Paradigms
ETL, Business Intelligence (BI)
Platforms
Google Cloud Platform (GCP), Dataiku, Mixpanel, Jupyter Notebook, Zoho CRM, Salesforce, Azure, Databricks
Storage
Redshift, Data Pipelines
Other
Data Queries, Dashboards, Amplitude, Marketing Analytics, Product Analytics, Revenue Analysis, Data Reporting, Data Visualization, Data Analysis, Google BigQuery, Google Data Studio, Reporting, Data Cleaning, Pipelines, Dashboard Design, MoEngage, Fivetran, A/B Testing, Sales Analysis, Root-cause Analysis (RCA), Data Warehousing, Warehouses, Amazon Redshift, Client Relations, Team Management
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