Curated Professional Portfolio

Hilda S. Koitamet

People Analytics · Predictive Modelling · HR Strategy · Business Intelligence

I work at the intersection of business analytics and human resources, using data to explain workforce behaviour, improve decisions and turn complex evidence into clear action. My portfolio brings together people analytics, predictive modelling, statistical testing, forecasting and strategic analysis — with a particular interest in responsible, interpretable analytics that organisations can actually use.

People analyticsPredictive modellingPython & RSPSS & ExcelForecastingData storytelling

Analytics with a people lens

I connect technical analysis with workforce, organisational and commercial questions.

01 · People analytics

Workforce evidence

I explore questions such as employee attrition, performance, engagement and retention using transparent statistical models alongside machine-learning approaches. I am especially interested in balancing predictive accuracy with explanations that HR teams can trust.

02 · Predictive intelligence

Models that support decisions

I build and compare forecasting, regression and classification workflows, checking data quality, leakage, assumptions and error metrics before translating results into practical recommendations.

03 · Strategic communication

Insight, not just output

I turn technical findings into concise business rules, dashboards and narrative recommendations so that non-technical stakeholders can understand what the evidence means and what action should follow.

Analytical range

A portfolio spanning people, risk, forecasting, operations and responsible decision-making.

7
portfolio projects across HR, forecasting, risk, operations and health analytics
5+
modelling families used, including regression, classification, clustering and time series
HR + BI
a combined focus on people decisions and commercially useful insight

Experience

My work spans community development, human resources, customer service and operational support.

2025

Community Development & Empowerment Officer

I delivered structured financial literacy training, coached participants on monetising craft skills, analysed feedback and collaborated with local organisations on community engagement.

2024

Human Resources Assistant

I compiled appraisal data, maintained employee records, prepared orientation materials and supported staff engagement activities.

2022

Human Resources Intern

I managed training applications, updated leave and absence records, supported stock administration and prepared seasonal employment contracts.

2025–Present

Customer Service & Team Member

I handle transactions accurately, deliver reliable service in a high-volume environment and resolve customer queries calmly under pressure.

Selected projects

I use analytics to investigate workforce behaviour, predict risk, forecast demand and support evidence-based organisational decisions.

This portfolio is intentionally analytical: each project shows the business question, method, evidence, limitations and decision value. Full assessed submissions are not reproduced publicly; each button opens a dedicated one-page analytical summary.
Predictive analytics · Retail revenue

Forecasting Global Apple Product Sales

I compared Linear Regression, Random Forest and XGBoost on 11,500 product-sales observations, using feature engineering, leakage control and model diagnostics to estimate revenue.

PythonXGBoostR² ≈ 0.998Feature importance
HR analytics · Explainable AI

Employee Attrition Prediction Research

I designed a comparative study of Logistic Regression, Random Forest, Gradient Boosting and SVM, balancing predictive performance with transparency for responsible HR decision-making.

SHAPAUC-ROCCross-validationResearch design
Supply chain analytics · Classification

Predicting Global Supply Chain Disruptions

I developed a leakage-aware classification workflow using 10,000 shipment records and compared Logistic Regression with Random Forest for disruption detection.

94.15% accuracyPrecision 1.00Recall analysisRandom Forest
Business statistics · Credit risk

Geographic Drivers of Credit Default

I used Chi-square and Kruskal-Wallis testing on more than 2,000 credit records to examine borrower default patterns and geographic differences in overdue exposure.

SPSSχ² = 224.246Cramer’s V = 0.331p < 0.001
Data visualisation · Health analytics

Predictors of Anxiety Using R

I analysed 11,000 observations to examine the relationships between anxiety, stress, sleep, diet, physical activity and psychosocial factors through visualisation, correlation and regression.

RR² = 0.666r = 0.668Regression
Group consultancy · Forecasting & optimisation

Retail Sales Forecasting and Profit Optimisation

As part of Team Value Predictors, I contributed to an end-to-end retail analytics proof of concept combining SARIMA and ETS forecasting, regression, classification, K-Means segmentation and market-basket analysis to improve inventory and margin decisions.

SARIMA MAPE 18.97%MASE 0.43Decision TreeK-Means20% safety stock
Strategy · Operations simulation

Molniya Automotive Simulation

I evaluated four rounds of strategic decision-making across finance, production, market share, workforce planning and team governance, including scenario testing for a new-model launch.

£1.281bn profit1.85% market shareScenario testingOperations

Let’s connect

I am open to conversations around people analytics, HR insight, business intelligence and analytical project work.

Education

My studies connect business intelligence with a strong foundation in human resource management.

MSc Business Analytics

Northumbria University, Newcastle upon Tyne · 2025–Present

BSc Human Resource Management

Cooperative University of Kenya · 2022–2024

Diploma in Human Resource Management

Cooperative University of Kenya · 2020–2022