Wessel Tangai
Power BI Developer | Business Intelligence Developer
PROFESSIONAL SUMMARY
Power BI Developer
Power BI Developer with 5+ years of expertise building integrated analytics solutions on the Microsoft Power Platform.
Proven ability to design optimized Power BI data models using DAX and Power Query, develop interactive dashboards, and
extend functionality through Power Apps and Power Automate to automate workflows and drive operational efficiency.
Core skills include Power BI data modelling, DAX, Power Query, Power Apps, Power Automate, ETL pipeline development,
and SQL optimization, with a passion for transforming data into actionable insights through compelling storytelling.
TECHNICAL SKILLS
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Power BI (DAX, Data Modelling, Power Query, Power BI Service, Dashboard Deployment).
SQL (Complex Querying, ETL Processes, Performance Tuning).
Excel (Power Query, PowerPivot, PivotTables, VBA, Dynamic Dashboards).
Power Platform (Power Apps, Power Automate).
Concepts (Data Warehousing, Statistical Analysis).
CORE COMPETENCIES
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Power BI Development: End-to-end dashboard design, from data modelling to deployment.
Data Automation: Building ETL pipelines with SQL and Power Query to reduce manual effort.
Advanced Analytics: Transforming raw data into actionable insights through statistical analysis and visualization.
Stakeholder Collaboration: Translating business requirements into technical solutions for cross functional teams.
Problem Solving: Diagnosing data discrepancies and implementing systematic fixes.
PROFESSIONAL EXPERIENCE
Business Intelligence Developer
CeSHHAR Zimbabwe
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Architected Power BI dashboard with real-time KPI tracking, reducing manual errors by 40% and accelerating report
delivery by 25%.
Engineered SQL-based ETL pipelines to automate data cleaning, cutting processing time by 30%.
Deployed validation frameworks that resolved 500+ discrepancies per year, achieving 100% compliance with PEPFAR
and Global Fund standards.
Led root-cause analysis to improve health data completeness by 35% within 6 months.
Led quarterly data quality audits, achieving 100% compliance with PEPFAR and Global Fund Standards.
Led a team of 15 data officers across 20+ health facilities, standardizing reporting processes and improving data
completeness by 30%.
Data•Analyst
CeSHHAR Zimbabwe
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Nov 2020 – Dec 2022
Automated data workflows reducing manual effort by 30% and ensuring 98% accuracy in KPI reporting.
Optimized SQL queries to analyze trends across 5+ health programs, contributing to 20% increase in operational
efficiency.
Redesigned data collection systems, reducing entry errors by 40% through validation rules.
Automated data collection for 15+ health programs, saving 20+ hours weekly.
Created weekly and monthly reports using Excel and Power BI to track program performance and inform strategic
decisions.
Data•Analyst
Rubiem Group | Zimbabwe
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Jan 2023 – Feb 2025
Sep 2013 – Oct 2020
Developed dynamic excel dashboards with VBA automation, slashing reporting time by 35%.
Designed 2 weekly Power BI dashboards for executives, highlighting KPIs and project milestones.
Identified operational trends that improved project timelines, earning recognition from senior leadership.
EDUCATION & CERTIFICATIONS
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Postgraduate Diploma in Business Analytics| Eaton Business School, UAE
Microsoft Fabric Engineer Associate | Microsoft
Google Data Analytics Professional | Coursera
Business Intelligence & Data Analyst | CFI
Dec 2023
May 2025
Dec 2023
Sep 2022
