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Tlhologello BiyanaTB
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Tlhologello Biyana

@tlhologellobiyana

Data Scientist at Business Science Corporation who delivered a 5% uplift in segment spend with an A/B-tested model.

South Africa
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At Business Science Corporation, I built a customer-segmentation engine combining k-means clustering and LightGBM classification, then validated its impact with an A/B test. The treatment group showed a 5% increase in usage and spend over the control group.

I also analysed a proposed customer-retention incentive and found its cost would exceed the revenue it was meant to protect. This helped avert a projected R12.4M net loss, and I designed a data-driven alternative to address churn.

For a flagship telecoms engagement, I delivered an analytics suite covering performance reporting, portfolio analysis, segmentation, and churn monitoring. I also designed a Post-Implementation Review framework using cosine-similarity matching to compare campaigns.

Earlier, at Drayton Glendower & Mokhobo, I built a forecasting model that identified market opportunities and contributed to a fourfold increase in successful pitches. I hold an M.Sc. in Data Science and Advanced Analytics from University of Cape Town, where I earned a distinction in coursework.

Experience

Work history, roles, and key accomplishments

BC
Current

Analytics Consultant (Data Science)

Business Science Corporation

Jan 2025 - Present (1 year 9 months)

Partner with clients to solve complex commercial problems using machine learning and advanced analytics, owning solutions from problem framing through modelling, delivery, and handover. Built a customer-segmentation engine that lifted segment spend by 5% and averted a projected R12.4M net loss by advising against a costly retention incentive.

BC

Analyst II

Business Science Corporation

Apr 2024 - Feb 2025 (10 months)

Supported client engagements with data analysis and reporting, contributing to analytics solutions.

DM

Data Analytics Specialist

Drayton Glendower & Mokhobo

Feb 2021 - Mar 2024 (3 years 1 month)

Partnered with clients at Board and C-suite level across multiple sectors, delivering executive-search advisory underpinned by data analytics. Built a forecasting model that increased successful pitches by 4x and streamlined talent mapping with a central database.

University of Cape Town logoUT

Statistics & Computer Science Tutor

University of Cape Town

Feb 2018 - Mar 2021 (3 years 1 month)

Tutored first-year Computer Science and second-year Statistics, leading practical sessions and assessing student performance. Adapted teaching to individual needs, creating an inclusive environment that improved comprehension and results.

Education

Degrees, certifications, and relevant coursework

University of Cape Town logoUT

University of Cape Town

Master of Science, Data Science and Advanced Analytics

Grade: Distinction in coursework; 72% for minor dissertation

Activities and societies: Relevant coursework: Machine Learning, Simulation & Optimisation, Prescriptive Analytics, Unsupervised Learning, Exploratory Data Analysis.

M.Sc. in Data Science and Advanced Analytics with distinction in coursework and 72% for the minor dissertation.

University of Cape Town logoUT

University of Cape Town

Bachelor of Business Science, Analytics

Grade: Dean's Merit List, Class Medal

Activities and societies: Relevant coursework: Mathematics 1000 & 2000, Mathematical & Inferential Statistics, Computer Science 1015/1016/2001, Micro & Macroeconomics, Corporate Financial Management.

B.Bus.Sc. in Analytics, with Dean's Merit List and Class Medal.

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