Lewis Okemwa Nyamboga
Data Scientist/ Statistician
Nairobi
Summary
Certified Data Scientist and Statistician with strong expertise in data analysis, statistical modeling and machine learning. Skilled in transforming raw data into actionable insights through advanced analytics, visualization and predictive modeling. Proficient in Python, SQL, Power BI and Tableau with hands-on experience in deploying machine learning models and handling big data using PySpark. Degree in B.Sc. in Statistics, with proven freelance experience delivering data-driven solutions for business growth. Passionate about applying data science to solve real-world problems in finance, healthcare, and technology.
Overview
3
3
years of professional experience
4
4
Certifications
Work History
Freelance Data Analysis
01.2023 - Current
- Analyzed diverse client datasets (sales, marketing, healthcare, finance) to uncover trends and insights.
- Built predictive models (regression, classification) for forecasting customer retention, sales, and inventory needs.
- Deployed machine learning models into production with Streamlit and Flask, enabling clients to interact with predictive systems.
- Improved data accuracy by applying cleaning, transformation, and anomaly detection techniques.
- Self-motivated, with a strong sense of personal responsibility.
- Excellent communication skills, both verbal and written.
Education
Bachelor of Science - Statistics
University of Nairobi
12-2025
Kenya Certificate of Secondary Education (KCSE) - undefined
Utumishi Boys Academy
01-2019
Skills
Programming & Data Tools: Python (NumPy, Pandas, Scikit-learn, TensorFlow, PyTorch), SQL, SPSS, Excel, PySpark
Machine Learning & AI: Regression, Classification, Clustering, Decision Trees, Random Forest, SVM, PCA, Neural Networks (ANN, CNN), Model Deployment with Flask/Streamlit
Data Visualization: Tableau, Power BI, Matplotlib, Seaborn
Affiliations
- Member, Mathematics Association of Nairobi University (M.A.N.U)
- Led workshops on data analysis tools such as Python and Excel, helping peers enhance analytical skills.
- Organized and coordinated student seminars on data-driven decision-making and statistical software applications.
Certification
Certified Data Scientist (IABAC Accredited) |AfriCDSA, 2025
Interests
Exploring cultures & landscapes Soccer Piano Continuous learning in AI & emerging tech
Timeline
Freelance Data Analysis
01.2023 - Current
Kenya Certificate of Secondary Education (KCSE) - undefined
Utumishi Boys Academy
Bachelor of Science - Statistics
University of Nairobi