Open to opportunities

Senyo Aborgah

@senyoaborgah

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Senior BI Developer and data analyst specializing in ETL, GIS, and actionable data visualizations.

South Africa

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What I'm looking for

I seek roles where I can lead BI and data-engineering initiatives, build scalable ETL/GIS solutions, mentor teams, and deliver measurable improvements in data accuracy and business decision-making.

I am a Senior BI Developer and Data Analyst with a strong background in building ETL pipelines, designing interactive dashboards, and deploying GIS-enabled data systems to improve data accuracy and decision-making. I have led cross-functional teams, mentored staff, and delivered measurable improvements such as 25% better data-driven decisions and 35% faster processing through optimized data workflows.

My experience spans Power BI, Tableau, Looker Studio, Python, SQL, ArcGIS and QGIS, and mobile field-data solutions where I engineered systems achieving up to 99% dataset accuracy. I hold certifications in Azure Data Fundamentals and data analytics from IBM and Google, and I focus on practical, scalable solutions that reduce manual work and increase insight-driven outcomes.

Experience

Work history, roles, and key accomplishments

Senior BI Developer

Quartex Technologies

Aug 2017 - Aug 2025 (8 years)

Designed and deployed interactive dashboards and centralized data warehouses, improving data-driven decision-making by 25% and data accessibility by 40% through scalable ETL pipelines and integrated field systems.

Power BI Tableau Python ETL Data Modeling GIS Data Warehousing

GIS Database Administrator

Centre for Remote Sensing and Geographic Information Service

Aug 2013 - Jan 2017 (3 years 5 months)

Developed mobile data collection tools and GIS layers for agricultural and health surveys, reducing manual entry time by 30% and improving data accuracy by 25% while training 50+ stakeholders.

ArcGIS QGIS PostGIS Python Data Validation GIS Training