ZAKHE MALIBONGWE VEZI MAJOLA
Senior Database Administrator Specialist
Johannesburg
Summary
Results-focused Senior Data Engineer and Scientist with over 15 years of experience in data operations, architecture, and engineering. Proven expertise in developing, optimizing, and scaling data pipelines, building predictive models, and leveraging machine learning for actionable insights. Skilled in managing large-scale databases, implementing deep learning models, and collaborating with cross-functional teams. Demonstrates a strong command of statistical analysis, time-series forecasting, and modern cloud-based data solutions, ensuring robust and scalable data
Overview
15
15
years of professional experience
7
7
years of post-secondary education
5
5
Certifications
Work History
Senior DBA and Data Engineer
Dark Fibre Africa (DFA)
Gauteng
08.2022 - Current
- Designed and implemented scalable data pipelines with high-availability clustering and Azure data warehouse replication
- Enhanced data security protocols, reducing unauthorized access risks through encryption and access control measures
- Developed predictive analytics models to support business operations and improve data-driven decision-making
- Utilized RedGate and Zabbix for monitoring, troubleshooting, and optimizing database performance
- Collaborated with senior management to enforce data quality standards and drive process improvements
Freelance Data Architect
Consulting Projects
Remotely
03.2022 - 07.2022
- Designed and implemented time-series forecasting models to optimize business processes and operations
- Built end-to-end data pipelines, integrating AWS cloud services for enhanced scalability and performance
- Developed data migration strategies, ensuring seamless transitions with minimal downtime
- Conducted advanced statistical analysis and presented actionable insights to stakeholders
Education
Bachelor of Science - Computer Science and Physics
University of Johannesburg
South Africa 01.2001 - 11.2007
Skills
Certification
Python Statistics and Financial Analysis
Area Of Expertise
- Time-Series Forecasting and Modeling
- Machine Learning and Deep Learning (PyTorch, TensorFlow)
- Data Pipelines and ETL Optimization
- Cloud Technologies (AWS SageMaker, Redshift, ElasticSearch)
- Advanced SQL and Flux Query Language
- Python and R Programming
- Agile/Scrum Methodologies
- Database Management and Performance Tuning
- Data Visualization and Reporting (Tableau, Power BI)
- Git and Version Control Systems
- Statistical and Regression Analysis
- Data Security and Integration
Raspberry Pi Programming , Playing Musical Instrument, Growing Plants & Gardening and Traveling
Gathering Financial Data Like Stock market and developing trends and better insights for better investment opportunities and investment returns, by means of Python, Studio R and Regression Methods/Strategy.
Timeline
Senior DBA and Data Engineer
Dark Fibre Africa (DFA)
08.2022 - Current
Freelance Data Architect
Consulting Projects
03.2022 - 07.2022
Bachelor of Science - Computer Science and Physics
University of Johannesburg
01.2001 - 11.2007
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