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Payel Mallick

@payelmallick

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Data Scientist at Chevron building a conversational voice agent grounded in company documents with a RAG pipeline.

India

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At Chevron, I’m building a real-time conversational voice agent for live design discussions, grounding responses in company documents with a RAG pipeline and Azure AI/Cognitive Services.

At DAR Al-Handasah, I led geospatial modelling for flood detection and urban heat risk across cities in South Asia and Africa. I also co-initiated “Sounds of the City,” a multimodal urban mapping project combining acoustic and environmental sensor data.

At Escorts Kubota Limited, I led geospatial data analysts working on crop identification, yield estimation, and crop-stage prediction. My work spans geospatial AI, remote sensing, machine learning, and environmental and agricultural applications.

Experience

Work history, roles, and key accomplishments

Current

Data Scientist 4

Current

Chevron

Aug 2026 - Present (2 months)

Building a real-time conversational voice agent that facilitates live design discussions, grounding its responses in company documents through a RAG pipeline over an enterprise knowledge base, using Azure AI/Cognitive Services and GPT-based LLM orchestration.

Azure AI Cognitive Services GPT RAG LLM Voice Agents Python

Current

Manager- Data Science & Analytics

Current

Escorts Kubota Limited

Apr 2023 - Present (3 years 6 months)

Led a team of three geospatial data analysts in spearheading projects focused on crop identification, yield estimation, health monitoring, and phenology detection. Implemented decision tree algorithms and LightGBM, developed a crop identification model for 7 crop types, and achieved a 10% increase in wheat crop identification accuracy.

Random Forest LightGBM Vision Transformer Hugging Face Neural Networks TensorFlow Keras LSTM Time Series Computer Vision Autoencoder CNN K Means Gan Pix2Pix Clustering (DBSCAN HDBSCAN)Dashboarding Python

Senior Data Scientist

DAR Al-Handasah

Feb 2025 - Jul 2026 (1 year 5 months)

Led advanced geospatial modelling for environmental risk assessments, including flood detection and urban heat island risk mapping across 6 cities in 2 countries. Analysed green cover impact on temperature using weighted regression and spatial statistics to guide urban climate adaptation strategies.

Spatial Modeling Flood Detection Urban Heat Island Effect Weighted Regression Spatial Statistics Vision Transformer Self Supervised Learning Semantic Segmentation Multispectral Imaging LLM ViT Agentic AI Claude Code Python

GIS Data Engineer II

HERE Technologies

Sep 2022 - Feb 2023 (5 months)

Delivered tailored and cost-effective data integration solutions, implementing scalable, reusable processes and automated workflows for efficient ingestion of data sources. Conducted data quality analysis and performed bulk updates for map databases in three countries in the APAC region.

Python SQL PostgreSQL PostGIS ETL Geospatial Data Processing Data Quality Analysis

GIS Data Engineer

Geoconsult India Pvt Ltd

Oct 2020 - Aug 2022 (1 year 10 months)

Executed spatial analysis of geological data, creating detailed terrain maps and raster datasets, which optimised project design and improved efficiency by 10%. Leveraged Python libraries including NumPy, GeoPandas, SciPy, and Scikit-Learn to analyse satellite imagery datasets.

Spatial Analysis Terrain Mapping Raster Data Python NumPy Geopandas Scipy scikit learn PCA SVM Random Forest Time Series Analysis

Data Analyst Trainee

Map My India

Jun 2016 - May 2017 (11 months)

Conducted data analysis on mapping applications to evaluate accuracy, applying data aggregation and trend analysis to identify patterns and improve user experience. Utilised PostgreSQL queries to extract and analyse data from over 100K databases, applying data visualisation techniques.

Data Analysis PostgreSQL Data Aggregation Trend Analysis Data Visualization