GIS/Remote Sensing/Geospatial Data Science/Python & R/Web Mapping/ GIS/Remote Sensing/Geospatial Data Science/Python & R/Web Mapping/

Turning spatial data into decisions you can map.

I'm a GIS analyst and geospatial data scientist. I build spatial analysis workflows end to end: satellite remote sensing in Google Earth Engine, spatial SQL in PostGIS, modeling and statistics in Python and R, and interactive web maps. Most of my work is in environment, water resources, and planning.

29.8833° N, 97.9414° W · San Marcos, Texas

View projects ↓ LinkedIn GitHub

M.S. Geography · GPA 3.84

About

Background, current work, and what I'm looking for.

I started in geomatics engineering in Nepal, doing GNSS and UAV surveys and municipal GIS work, and moved into remote sensing and spatial data science during my M.S. in Geography at Texas State. These days most of my time goes to Google Earth Engine, PostGIS, Python, and R, applied to hydroclimatic analysis, suitability and flood-risk modeling, and land cover change.

I try to keep my work reproducible: public code, documented data sources, and a record of methodological decisions. The project pages below link to the repositories so you can check the work yourself. I'm looking for GIS Analyst, GIS Developer, and geospatial data science roles in environment, water resources, energy, and planning.

3.84Graduate GPA · M.S. Geography, Texas State

4+ yrsGIS, surveying & research experience

5Fellowships & scholarships awarded

Skills

Grouped by area. The bolded items are the ones I use most.

Programming & Data

PythonPostgreSQL / PostGISR (Tidyverse, sf)Spatial SQLPandas / NumPyRasterioArcPyStatistical AnalysisGit / GitHub

Remote Sensing

Google Earth EngineLandsat / SentinelNDVI / LSTLand Cover ClassificationHyperspectralERDAS IMAGINE

Spatial Analysis & GIS

ArcGIS ProArcGIS DashboardsSpatial StatisticsSuitability / MCDAQGISModelBuilderArcGIS OnlineArcadeField Maps / Survey123

Web Mapping

LeafletJavaScriptChart.jsGeoJSONHTML / CSS

Surveying & Field

GNSS / DGPSUAV / Drone MappingPix4DAutoCAD

Projects

Each project has a full write-up, and most link to code or a live app.

Live · Spatial SQL + PostGIS

Waiting for the Grid: ERCOT's 434 GW Interconnection Queue

ERCOT's interconnection queue measured entirely in PostgreSQL/PostGIS: 1,714 projects geolocated from named interconnection points by trigram matching (47.6% match rate, published), county queue-pressure mapping, and cohort attrition showing only 28.8% of 2010–2020 entrants got built. Sequel to the solar siting project, and a data answer to its cost critique.

PostgreSQL · PostGIS · pg_trgm · SQL · matplotlib

Live · ML + Spatial Validation

Where Solar Gets Built: Utility-Scale Solar Siting in Texas

A Random Forest model of where utility-scale solar actually gets built in Texas. Distance to transmission matters about 9× more than sunshine, and a transfer test to North Carolina shows the grid-access threshold shifts with state policy. Spatial-CV ROC-AUC 0.92.

Python · scikit-learn · Earth Engine · SHAP · GeoPandas

Live · RS + PostGIS + Web

Austin Urban Heat Island Story Map

An interactive scrollytelling map of summer land surface temperature across all 65 Austin neighborhoods, measured in Google Earth Engine and joined to census income via a PostGIS spatial join. Canopy–heat r = −0.87.

Earth Engine · PostGIS · R · Leaflet · Chart.js

Live · GIS + LiDAR

Rooftop Solar Potential: 1 m LiDAR vs a 30 m Open DSM

The same rooftop-solar method on 1 m airborne LiDAR (Austin) and a 30 m open DSM (Kathmandu), quantifying how elevation-data resolution systematically biases solar estimates.

USGS 3DEP · ArcGIS Pro · Python · Copernicus GLO-30 · OSM

Live · Dashboard + EJ Analysis

Air Monitoring Gaps & Social Vulnerability in Greater Houston

A live ArcGIS dashboard pairing real-time EPA AirNow air quality with a census-tract analysis of social vulnerability and monitoring gaps across Houston-Galveston-Brazoria. 399 of 1,595 tracts are both highly vulnerable and beyond neighborhood-scale monitoring.

ArcGIS Online · Dashboards · Arcade · AirNow · CDC SVI

Live · Predictive Modeling

Forecasting San Antonio Urban Growth to 2030 (Markov-CA)

A Markov chain–Cellular Automata model that learns 2010–2020 land-cover transitions and forecasts where San Antonio will grow by 2030 (Figure of Merit 0.85).

ArcGIS Pro · Markov-CA · Python · NLCD

Live · Analyst + Python

Transit Dependency Likelihood Index

A custom ArcPy tool combining demographic need with transit service areas to find high-need neighborhoods underserved by bus stops in Portland, OR.

ArcPy · Network Analyst · z-scores · VIF

Live · RS + Statistics

Vegetation Cooling Across Land-Cover Types, Texas Hill Country

A statistical test of how much vegetation (NDVI) cools the land surface across five land-cover types, with a full reproducible R workflow (Kruskal–Wallis, ANCOVA).

ArcGIS Pro · Landsat · R · ANCOVA

Live · Remote Sensing

Post-Fire Vegetation Damage Assessment

Pre/post-fire change detection of the 2025 Pacific Palisades Fire using Wyvern hyperspectral imagery and red-edge vegetation indices.

ERDAS · Hyperspectral · ChangeCIred-edge

Experience

From municipal GIS in Nepal to hydroclimatic research in Texas.

Jan 2025 – Present

Graduate Research Assistant

Texas State University · San Marcos, TX

Hydroclimatic data analysis in Python and R; long-term climate and water-resources research; building reproducible data-processing workflows.

Nov 2023 – Jun 2024

Geomatics Engineer

Pokhara Metropolitan City · Gandaki, Nepal

GNSS and UAV surveys for river, terrain, and surface-water analysis; multi-temporal remote sensing of Fewa Lake water-extent change for flood-risk management.

Jun 2021 – Oct 2023

GIS Analyst

Earth Eco Consultancy · Gandaki, Nepal

Multi-criteria land-use suitability analysis; wildfire-risk model for Banke National Park; cadastral/DGPS land pooling; municipal thematic mapping for planning and reporting.

Awards & education

M.S. Geography, Texas State · B.S. Geomatics Engineering, Tribhuvan University.

The Graduate College ScholarshipTexas State University · 2026

Joe & Jerry Moore ScholarshipTexas State University · 2025

TSUS Graduate Endowed Fellowship2024 & 2025

TXST Graduate Merit FellowshipTexas State University · 2024

Open to new roles

Get in touch.

I'm open to GIS Analyst, GIS Developer, and geospatial data science roles in environment, water resources, energy, and planning. Email is the fastest way to reach me.

Emailnirajantripathi5523@gmail.com Phone737-387-9007 RésuméDownload PDF