Shreyansh Jangitwar

1+ year of work experience

Oct 20258 mosMay 2026

Built backend REST APIs for vendor workflows, report generation, and invoice processing systems. Developed a report builder with SQL-based filters for flexible retrieval across transactional records. Designed and implemented a vendor portal serving 2,500+ vendors, enabling PO/invoice acknowledgements and streamlined communication between buyers and vendors. Built a GST reconciliation module that ingests Excel files and matches against data to surface mismatches. Developed an automated 3-way matching system validating PO, Invoice, and GRN records to detect pricing and quantity inconsistencies. Removed a microservice dependency by refactoring an existing backend workflow, eliminating 10+ weekly service requests from on-call teams and speeding up new client setup. Developed an OCR invoice ingestion pipeline integrating file upload, OCR processing, AI microservice extraction, and backend data persistence for automatic invoice data population.

Jul 20253 mosSep 2025

Gurugram, Haryana, India

Jul 20246 mosDec 2024

Designed and implemented a data lake to centralize and streamline large-scale data storage for analytics. Processed and cleaned raw data (25 TB+), removing duplicates and ensuring accuracy and consistency. Developed an automated bash script for efficient data management and storage in a PostgreSQL database. Developed a Python script that generates data quality reports for different EVs, using pandas in Jupyter Notebook to identify missing data and ensure data integrity for analytics and decision-making. Developed a range estimation algorithm to accurately calculate and predict client range (in km). Performed Exploratory Data Analysis (EDA) with pandas and visualization libraries in Jupyter Notebook to analyze client data, understand battery behavior, and identify key patterns and trends.