Tuấn Hà

Software Engineer at Azoom Viet Nam INC (2023-06 – 2026-04)

Optimized critical database queries by 90% (from 7-9s to 200-800ms) through advanced indexing, denormalization, and CTE optimization techniques.
Redesigned PDF generation microservice to handle 7.2x more traffic (20 to 143 req/s) by implementing multi-process Chrome architecture and resource pooling.
Implemented template-based PDF generation using docx-templates, enabling non-developers to modify templates without code changes and reducing template iteration time by 80%.
Reduced CI pipeline execution time by 40% (10 min to 6 min) by parallelizing tests across isolated databases, optimizing migrations (45s to 8s), and refactoring brittle unit tests into reliable API integration tests with automatic mock injection.
Researched and implemented Strapi headless CMS with custom Vue components for company landing page, reducing content update time by 90% and enabling non-technical teams to manage content independently.

Software Engineer at Skymap Global Pte Ltd (2020-09 – 2023-05)

Developed GIS platform processing 1M+ spatial features with 60% faster loading times using GeoServer, PostGIS with GiST indexing, and vector tile caching.
Led team of 5 developers to deliver Hospital Information Management System with 10+ core modules on schedule through effective coordination and code reviews.
Mentored 4 junior developers, enabling full-stack contributions within 3 months of onboarding.
Refactored Laravel application to service-repository architecture with Unit of Work pattern, achieving 30% faster page loads and 25% fewer production hotfixes.
Implemented ETL pipelines using GDAL/OGR to process and transform geospatial data from multiple formats (Shapefiles, GeoJSON, CSV, Excel) into PostGIS, implementing coordinate system transformations and geometry validation.
Developed reusable Vue.js mapping components with Mapbox GL JS, enabling polygon drawing, layer management, and spatial filtering for interactive geospatial visualization.

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