ludin castillo

— Deployed 30+ data validation controls across 6 critical business domains, cutting audit preparation time by 50% and reducing operational data incidents.
— Built Tableau dashboards serving 150+ stakeholders including, eliminating 40% of reporting backlog through end-to-end pipeline automation.
— Optimized SQL Server queries against of regulated financial data.
— up to 60% improvement in executio

Extracted, cleaned, and transformed 5+ TB of financial data from SQL Server and Oracle platforms using advanced SQL programming and analytical research techniques, delivering precise reports on operational metrics to 150+ enterprise stakeholders including C-level leadership. Designed and developed data-driven executive dashboards in Power BI, enabling both rapid-turnaround ad hoc analysis and long

— Designed and administered SQL Server databases supporting strategic analysis across multiple business units.
— Automated 20+ recurring ETL workflows via SQL Agent jobs, eliminating daily manual processing overhead.
— Applied data mining techniques to surface business trends for executive decision-making on national-scale initiatives.
— Developed complex stored procedures and query optimization

Executed strategic analytics projects at executive level, designing custom SQL queries, stored procedures, and Python/R-based research to mine data, identify trends, and deliver actionable business intelligence to senior leadership. Built and administered SQL Server databases with scheduled automation jobs, creating reliable data pipeline infrastructure that improved processing consistency and red

— Supported requirements gathering and data analysis for national and regional strategic projects
— Delivered reports to executive and board-level stakeholders across multiple organizational levels
— Developed automated SQL and Excel-based reporting processes, reducing manual effort in monthly and quarterly deliverables

Conducted requirements gathering, analytical research, and strategic information analysis for national and regional executive projects, producing multi-level reports and consulting with stakeholders to align data with business objectives. Developed high-complexity automated reporting processes using programming techniques, significantly improving institutional report generation efficiency, data ac

Installed and configured banking software in critical production environments. Administered network users and resolved escalated technical incidents for executive staff.

Provided technical support and system administration in critical banking environments, building foundational expertise in enterprise data systems, computer science infrastructure, and operational workflows that underpins current data analytics practice.

In Progress — Expected 2026

Issued Sep 2026

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