Open to opportunities

Sharmaine Zvikonyo

@sharmainezvikonyo

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Marketing analyst and data scientist focused on actionable insights.

South Africa

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What I'm looking for

I seek data-focused roles where I can apply ML and NLP to solve real business problems, produce actionable insights, and grow within a collaborative, impact-driven team.

I am a marketing analyst and data scientist with hands-on experience in machine learning, natural language processing, and data analysis, demonstrated through self-directed internships, freelance projects, and community work.

I build end-to-end ML solutions including churn prediction, fraud detection, and sentiment analysis, and produce reproducible notebooks and stakeholder-ready dashboards to drive data-informed decisions.

I combine technical skills in Python, Pandas, scikit-learn, and visualization with strong leadership, communication, and community engagement to deliver practical, impact-focused analytics.

Experience

Work history, roles, and key accomplishments

Current

Marketing Analyst

Current

Independent / Freelance

Jul 2025 - Present (5 months)

Analyze marketing and customer datasets, conduct sentiment analysis and social media text mining, and produce dashboards and reports to inform stakeholder decisions and simulate South African business case studies.

Python NLP Sentiment Analysis Data Visualization Dashboards Data Cleaning Reporting

Freelance Data Scientist

Independent / Freelance

Jan 2025 - Jun 2025 (5 months)

Built ML models and delivered project-based analytics for clients across banking, retail, and fast-food, including churn prediction, fraud detection, and sentiment analysis; produced insight-driven reports recommending operational improvements.

Python Pandas NumPy scikit learn Model Evaluation Fraud Detection

Data Science Intern

Independent / Self-Directed

May 2024 - Dec 2024 (7 months)

Completed end-to-end data science projects including EDA, feature engineering, model tuning, and published reproducible notebooks and documentation on GitHub to demonstrate reproducible workflows.

Python scikit learn Cross Validation & Model Tuning GitHub Jupyter

Community Volunteer

Local Community Groups

Dec 2023 - Apr 2024 (4 months)

Supported community organizations with data organization and spreadsheet cleanup, and assisted in park cleanups and church outreach to improve local operations and data quality.

Data Cleaning Spreadsheet Management Community Outreach Team Collaboration event support