Ziyanda Tonjeni
Business Intelligence Developer and Data Analyst
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About
Results-driven Business Intelligence Developer and Data Analyst with over 10 years of experience delivering enterprise BI, analytics, regulatory reporting, and data warehousing solutions across banking, finance, insurance, and consulting industries. Strong expertise in SQL, Power BI, QlikView, SAS, SSIS, SSAS, Azure, and data modelling, with a proven track record of translating business requirements into scalable BI solutions that support strategic decision-making, compliance, and operational efficiency.
Experience
Business Intelligence Developer - Sasfin
(2022-05)
- Developed and maintained Business Intelligence Warehouse solutions including ETL processes, data marts, cubes, and enterprise reports.
- Delivered BI solutions for CLEC, Impairments, Leasewave Audit, Vendor Management, and Credit Funnel projects.
- Built scalable SQL-based reporting models supporting credit exposure and collections analysis.
- Provided 2nd and 3rd level support ensuring SLA compliance and system stability.
- Collaborated with Risk, Finance, and Operations stakeholders to deliver reporting solutions.
Business Intelligence Analyst - FNB
(2018-11 - 2022-05)
- Delivered BI and analytics solutions for Business Banking TX Pillar and ROFA initiatives.
- Developed reporting solutions for DDA activation tracking, revenue leakage, and product sales insights.
- Produced dashboards and MIS reports supporting strategic decision-making.
- Facilitated stakeholder workshops to define reporting requirements and BI strategies.
IT Consultant - IQ Business
(2016-05 - 2018-10)
- Delivered consulting services across banking and financial services clients including Investec, Nedbank, and FNB.
- Developed SQL-based BI reports and dashboards using Power BI.
- Converted static SQL scripts into dynamic SQL solutions.
- Supported SSIS/ETL production environments and post-implementation support.
Business Intelligence Developer - Liberty
(2015-01 - 2016-04)
- Delivered BI solutions for FATCA, CRS, Compliance, and CAL projects.
- Developed QlikView dashboards and SQL-based reporting models.
- Conducted testing, deployment, and post-implementation support.
Data Analyst - PPC Ltd
(2012-09 - 2014-08)
- Developed IBM Cognos reports supporting regional and Africa-wide sales analysis.
- Conducted competitor intelligence analysis and trend reporting.
Junior Business Analyst - TEBA Ltd
(2008-10 - 2011-08)
- Managed reporting lifecycle processes using SQL and Data Assist.
- Supported data warehouse monitoring and optimization.
IT Intern - Eskom
(2007-11 - 2008-05)
- Assisted with IT systems documentation, support, and maintenance activities.
Education
B-Tech - IT: Business Applications (2014)
Diploma - IT: Business Applications (2012)
Certificate - Computer Studies (2002)
