Gabriel
Kariuki

Analysed the full arc of the COVID-19 pandemic across 255 countries from January 2020 to October 2023. Tracked case and death trajectories, quantified vaccination rollout impact, modelled healthcare system strain, and identified socioeconomic determinants of outcomes using K-Means clustering across 350,085 records.

People intelligence dashboard on the IBM HR Analytics dataset (1,470 employees). Identified key attrition drivers, profiled high-risk segments, and built a Random Forest prediction model achieving AUC 0.88. Quantified a $300K+ net saving from model-assisted retention interventions.

Applied NLP to 1,597 Amazon product reviews across 62 products. Used TextBlob for sentiment labelling, TF-IDF for feature extraction, and trained Logistic Regression, Random Forest, and Gradient Boosting classifiers to turn unstructured customer text into actionable product intelligence.

Segmented the Tech & AI talent pool (2024–2026) into distinct candidate profiles based on career stage, skill demand, AI adoption, and hiring velocity. Identified supply-demand gaps and guided targeted sourcing strategies using K-Means clustering, Python, Pandas, and Scikit-learn.

Conducted conflict-of-interest checks for 35+ simulated audit and consulting clients. Delivered risk-rated screening reports applying IESBA, IFAC, and PCAOB frameworks. Used Excel and Power BI to analyse large datasets and produce management summaries, tracking all correspondence in a centralised system.

Final year BIT project. A full-stack web app enabling chronically ill patients to log symptoms and receive doctor feedback and prescriptions remotely. Integrated pharmacy fulfilment — pharmacies accept and deliver prescriptions through the same platform, closing the loop from diagnosis to dispensing.

An advanced data engineering platform demonstrating production-ready ETL and ELT pipelines for processing large-scale datasets. Covers extraction from diverse sources, complex transformations, and loading into analytical targets — with a monitoring dashboard for full pipeline observability.

A full-featured appointment scheduling and management system. Enables users to book, manage, and track appointments with a clean interface and structured backend — demonstrating practical software engineering for real-world service workflows.

A cybersecurity utility that monitors and verifies file integrity using cryptographic hashing. Detects unauthorised modifications, tampering, or corruption of files — applying core principles from Google's Cybersecurity Professional Certificate in a practical, deployable tool.

MVP built during the seeNairobi hackathon. Ajira (Swahili for "employment") is a platform tackling urban youth unemployment in Nairobi by connecting job seekers with opportunities through an accessible, mobile-first interface — built rapidly under hackathon conditions.