THERESIAMBEYU ERNEST ISAKA
Data Analyst
Dar es Salaam
Summary
Motivated Data Scientist with a background in Mathematics and Statistics. I have practical experience in insurance, business, weather, and national statistics. I use machine learning, data analysis, and actuarial methods to solve real problems. I am good at explaining complex ideas in a simple way and enjoy working with teams to create useful solutions.
Overview
4
4
years of professional experience
2
2
Languages
Work History
Intern, Data Science & Risk Analysis
Actuarial & Risk Consulting Limited (ARC)
06.2025 - Current
- Assisted in actuarial valuations, solvency reviews, and premium evaluations to support fair and sustainable insurance pricing.
- Contributed to risk management and compliance, including stress testing, reinsurance analysis, and assisting in the development of insurance and risk policies and policy frameworks.
- Assisted in developing and modifying predictive models for pensions and pricing, to strengthen long-term financial and pricing strategies.
- Prepared technical reports, dashboards, and presentations for insurers, regulators, and clients, and collaborated with senior consultants to deliver data-driven recommendations.
Data Analytics Officer
Xfrey Ltd
09.2022 - 12.2023
- Supervised data collection and made sure the data was secure and correct.
- Analyzed data using Excel, Google Sheets, and Tableau to find useful insights.
- Prepared reports that helped managers make better decisions.
Enumerator
National Bureau of Statistics (NBS)
07.2022 - 09.2022
- Visited households to collect demographic data and check the accuracy of answers.
- Entered and coded data into databases for national statistics use.
Data Officer
Tanzania Meteorology Authority (TMA)
08.2021 - 10.2021
- Collected and processed weather data for aviation and forecasting.
- Coded and sent weather messages to ensure people got correct information on time.
Education
MSc - Data Science
University of Dar Es Salaam
09-2026
BSc - Mathematics and Statistics
University of Dodoma
01.2022
Skills
Programming & Tools: Python, R, SQL, Excel, Tableau, Google Sheets, Stata, SPSS
Machine Learning: Regression, Classification, Clustering, Decision Trees
Statistics: Hypothesis testing, Sample size calculation, Multivariate analysis
Domain Knowledge: Insurance Risk, Actuarial Valuations, Fraud Analytics, Weather Data, National Statistics
Other Skills: Problem-Solving, Communication, Teamwork, Presentation
Teamwork and collaboration
Fast learner
References
Dr. Sarah Emerald, Osima, Manager of MI at TMA, sarah.osima@gmail.com, +255-755787878, TMA, Dar es Salaam
Mr. Erick Justin Mbogoro, Lecturer at UDOM, mbogoroerick40@gmail.com, +255-754740452, Dar es Salaam
Mr. Expery M. Massawe, Assistant Lecturer at UDOM, massawe94expery@gmail.com, +255-757903044, Dodoma
Timeline
Intern, Data Science & Risk Analysis
Actuarial & Risk Consulting Limited (ARC)
06.2025 - Current
Data Analytics Officer
Xfrey Ltd
09.2022 - 12.2023
Enumerator
National Bureau of Statistics (NBS)
07.2022 - 09.2022
Data Officer
Tanzania Meteorology Authority (TMA)
08.2021 - 10.2021
BSc - Mathematics and Statistics
University of Dodoma
MSc - Data Science
University of Dar Es Salaam