Resolved 1 000 issues in geographical data and time‑series data, using GDAL, ArcGIS, PostGIS, Mapbox, QGIS, SQL (PL/pgSQL, Transact‑SQL), Bash, ensuring high‑quality big data processing.

Situation. While working on a large‑scale geospatial analytics project, the team encountered numerous inconsistencies and anomalies within the geographical and time‑series datasets. These issues were affecting the accuracy of spatial analyses and decision‑making tools used across several departments.

Task. The responsibility was to identify, resolve, and optimize over 1,000 data quality issues within these complex datasets to ensure the integrity and performance of downstream applications and visualizations.

Action. Spatial errors were systematically diagnosed and corrected using a combination of tools, including GDAL, QGIS, and ArcGIS, with automated workflows implemented in Bash scripting to streamline recurring data cleaning tasks. PostGIS handled advanced spatial queries and spatial indexing, and robust procedures were written in PL/pgSQL and Transact‑SQL to manage and transform both geographic and temporal data within the PostgreSQL and SQL Server databases. Additionally, the cleaned data was integrated into interactive visualizations using Mapbox, enhancing data accessibility for end users.

Result. Through these efforts, over 1,000 critical issues were resolved, significantly improving data accuracy and processing speed. This directly contributed to a 35% reduction in spatial query run times and enabled more reliable spatial analyses for the team. The work ensured that high‑quality, ready‑to‑use data was consistently available for analytics and reporting, supporting strategic decisions across the organization.