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I am Arun Sebastian, a senior geospatial software developer with 15+ years of experience delivering data-centric GIS and full-stack solutions across ESRI and open-source stacks. I specialize in turning complex geospatial data into reliable software applications that empower decision-making for government and enterprise clients. I thrive in collaborative, fast-paced environments and enjoy designing scalable architectures, building robust back-end services, and creating intuitive front-end mappings and dashboards. I am seeking challenging full-stack development roles with a reputable organization.…I am Arun Sebastian, a senior geospatial software developer with 15+ years of experience delivering data-centric GIS and full-stack solutions across ESRI and open-source stacks. I specialize in turning complex geospatial data into reliable software applications that empower decision-making for government and enterprise clients. I thrive in collaborative, fast-paced environments and enjoy designing scalable architectures, building robust back-end services, and creating intuitive front-end mappings and dashboards. I am seeking challenging full-stack development roles with a reputable organization.

Arun Sebastian

Full Stack Developer, App Designer, Data Analyst, +2

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I am Arun Sebastian, a senior geospatial software developer with 15+ years of experience delivering data-centric GIS and full-stack solutions across ESRI and open-source stacks. I specialize in turning complex geospatial data into reliable software applications that empower decision-making for government and enterprise clients. I thrive in collaborative, fast-paced environments and enjoy designing scalable architectures, building robust back-end services, and creating intuitive front-end mappings and dashboards. I am seeking challenging full-stack development roles with a reputable organization.…I am Arun Sebastian, a senior geospatial software developer with 15+ years of experience delivering data-centric GIS and full-stack solutions across ESRI and open-source stacks. I specialize in turning complex geospatial data into reliable software applications that empower decision-making for government and enterprise clients. I thrive in collaborative, fast-paced environments and enjoy designing scalable architectures, building robust back-end services, and creating intuitive front-end mappings and dashboards. I am seeking challenging full-stack development roles with a reputable organization.

Available to hire

I am Arun Sebastian, a senior geospatial software developer with 15+ years of experience delivering data-centric GIS and full-stack solutions across ESRI and open-source stacks. I specialize in turning complex geospatial data into reliable software applications that empower decision-making for government and enterprise clients. I thrive in collaborative, fast-paced environments and enjoy designing scalable architectures, building robust back-end services, and creating intuitive front-end mappings and dashboards. I am seeking challenging full-stack development roles with a reputable organization.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Work Experience

Spatial Engineer (Contract) at Queensland Police Service

March 1, 2025 - Present

Part of the Reform Implementation Taskforce designing and building the new QPS GIS environment, integrating geospatial capabilities with QPS, QAS, and QFD to support Disaster Management (DM), State Emergency Services (SES), and secure data sharing. Delivered GIS applications, hub sites/pages, dashboards, story maps, web apps, and Survey123 forms and data.

Senior Geospatial Advisor (Contract) at SITEDE Pty Ltd

August 1, 2024 - March 1, 2025

Gazetteer maintenance and enhancements for an open cadastral GIS data portal; improved access for surveyors and infrastructure projects; data governance, data quality checks, and web app enhancements.

GIS Developer (Contract) at FullExtent Pty Ltd

February 1, 2024 - July 1, 2024

SDT Explorer: 2D/3D spatial data visualization for NSW Spatial Digital Twin; supported live data sharing across government; implemented 4D visualization.

Software Engineer at Esri Inc.

August 1, 2023 - February 1, 2024

QuickCapture Web Designer App - enhancements to the web designer for QuickCapture mobile app; added features, bug fixes, planned releases.

Senior GIS Developer/Consultant at Geographic Business Solutions Pvt Ltd

April 1, 2019 - July 1, 2023

Led design, development, deployment, and maintenance of ArcGIS WebAppBuilder widgets (Edit+ with topology integrity) and admin tool (DxMail). Replaced NOC Viewer with ArcGIS Experience Builder-based viewer; migrated NZTA MAPHUB widgets; delivered Auckland Council and other government GIS projects; maintained ArcGIS Enterprise deployments.

Senior GIS Developer at GPS-IT Limited

September 1, 2017 - March 1, 2019

Fieldays App, Platemeter App, Pest Plant Management App; offline-capable data capture, Bluetooth data ingestion, onsite reporting and data export.

GIS Developer at Geographic Business Solutions Pvt Ltd

July 1, 2013 - August 1, 2017

Ravensdown soil testing app; MPI - ESRI WebApp Builder-based GIS Hub; NZTA MAPHUB – ARGANAUT integration; WDC WaiMap viewer customization; GFMO device-adaptive viewer.

Project Leader / Technical Consultant at IMMCO Software Solutions Pvt Ltd

August 1, 2011 - March 1, 2013

Led GIS web app development for multiple projects (KFRI, ATREE, GKVK, etc.), including online spatial data archives, ponds mapping, and data export workflows; directed project teams and client communications.