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Javel Williamson

@javelwilliamson

Functional Data Migration Analyst at Digicel Group who validated 27,000 prepaid customer records with 95% data accuracy.

Jamaica

Message

At Digicel Group, I owned migration of customer accounts, payments, and adjustments across 27,000 prepaid St. Kitts customer records, achieving 95% data accuracy through SQL and Python validation and pre-go-live reconciliation.

I also architected data mapping rules and transformation logic for postpaid customer pipelines across Barbados, Cayman, and St. Kitts in Azure Data Factory. At Urban Development Corporation, I administered RDBMS and maintained Power BI dashboards; at MET Service, Jamaica, I quality-checked historical weather data and analyzed rainfall and temperature summaries.

Experience

Work history, roles, and key accomplishments

Functional Data Migration Analyst

Digicel Group

Apr 2024 - Nov 2025 (1 year 7 months)

Owned data migration for customer accounts, payments, and adjustments across 27,000 prepaid St. Kitts customer records at system cutover, achieving 95% data accuracy through rigorous SQL/Python validation frameworks and pre-go-live reconciliation. Architected and scaled data mapping rules and transformation logic for postpaid customer pipelines across Barbados, Cayman, and St. Kitts in Azure Data

SQL Python Azure Data Factory Azure Databricks Data Validation ETL Data Migration Reconciliations QA

Database Administrator

Urban Development Corporation

Jun 2023 - Apr 2024 (10 months)

Managed and maintained PowerBI dashboards for day-to-day revenue data across UDC-owned tourist attractions and commercial businesses, enabling real-time financial visibility for stakeholders. Administered RDBMS including user access controls, proactive monitoring, tuning, and performance optimization to safeguard sensitive data.

Power BI RDBMS Database Administration Performance Optimization Monitoring User Access Control

Data Analyst

MET Service, Jamaica

Jul 2018 - Feb 2020 (1 year 7 months)

Executed first-level quality control on historical meteorological data, including rainfall and temperature records from 1987 to 1993. Analyzed monthly summaries using Excel pivot tables and computed station-level means and island-wide normals to identify trends informing operational decisions.

Data Quality Excel Pivot Tables Statistical Analysis Meteorological Data