Tumelo Nkuna
@tumelonkuna1
Data analyst skilled in SQL, Power BI, Python, and Azure, driving insights to improve business outcomes.
South AfricaWhat I'm looking for
I am a motivated data analyst with hands-on experience in SQL, Power BI, Excel, and Python, and exposure to Azure cloud services. I turn complex datasets into actionable insights to support data-driven decision-making.
At Discovery Limited I collected, cleaned, and transformed large health insurance datasets, built interactive Power BI dashboards, and implemented validation scripts that improved data accuracy by 20% while reducing manual reporting time by 40%.
Currently at Standard Bank Group I develop ETL pipelines, design and maintain Power BI dashboards tracking loan performance and customer acquisition, and collaborate with data engineers to optimize SQL, improving reporting efficiency by 35%.
I have built predictive models in Python (scikit-learn, pandas) including a prototype forecasting policy lapse rates with 85% accuracy, and I seek opportunities to apply analytics to drive retention, product personalization, and operational efficiency.
Experience
Work history, roles, and key accomplishments
Data Analyst
Standard Bank Group
May 2024 - Present (1 year 5 months)
Analyzed transactional and engagement data, developed ETL pipelines and Power BI dashboards, and optimized SQL queries to improve reporting efficiency by 35% while delivering predictive models for customer targeting.
Data Analytics Intern
Discovery Limited
May 2023 - May 2024 (1 year)
Collected and transformed large health insurance datasets, built Power BI dashboards and automated reports that reduced manual reporting time by 40% and improved data accuracy by 20%.
IT Helpdesk Technician
Namibia Logistics
Feb 2022 - Apr 2023 (1 year 2 months)
Served as first point of contact for technical issues, performing remote troubleshooting and routing unresolved incidents to higher-level support to maintain service continuity.
Education
Degrees, certifications, and relevant coursework
BCBoston City Campus
Diploma, Diploma
Pursuing a diploma at Boston City Campus with expected completion in 2025.
Norkem Park High School
High School Certificate, General
Completed High School Certificate at Norkem Park High School, graduating in 2017.
Availability
Location
South AfricaAuthorized to work in
Job categories
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