Warren Olckers

Graduate Computer Scientist | BSc Computer Science | Machine Learning and AI | Data Analytics

Talent

BrakpanMember since June 23, 2026

Supervised classificationXGBoostModel evaluation (precision, recall, F1, AUC)Benchmark datasets (NSL-KDD, CICIDS2017, UNSW-NB15)Systematic literature reviewPython (object-oriented and functional)JavaJavaScriptSQL (MySQL, PostgreSQL)Probability and descriptive statisticsAlgorithms and data structuresMySQLPostgreSQLData martsBig Data TechnologiesCloud ComputingMicrosoft Power BIMicrosoft ExcelE-commerce platform administrationIT systems managementVS CodeGitNode.jsEclipseGenerative AI toolingCorelDRAWCanvaPythonSQLFeature engineering

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Supervised classificationXGBoostModel evaluation (precision, recall, F1, AUC)Benchmark datasets (NSL-KDD, CICIDS2017, UNSW-NB15)Systematic literature review

About

I am a BSc Computer Science graduate who spent the final stretch of my degree going deep on machine learning. My thesis benchmarked ML algorithms for network intrusion detection across three real-world datasets and built a reproducible XGBoost classifier, earning a grade of 1.0 (the highest distinction on the German grading scale). The oral defence was also graded 1.0.

I have four years of experience doing supply chain and operational analytics in a live business environment, where data had to drive real purchasing, logistics, and cash flow decisions. I am comfortable working across the full data pipeline, from writing SQL queries and building data models through to producing dashboards and translating findings into clear recommendations for decision-makers.

Experience

IT Analyst - Gummy Berry Juice South Africa - South Africa

(2022-12)

Administered online sales channels and marketplace platforms, ensuring accurate product information, inventory management, pricing, order processing, and data integrity.
Maintained and analysed customer, sales, inventory and supplier trends.
Produced operational reports and analytical insights using Microsoft Excel and related reporting tools.
Analysed inventory levels, stock trends, supplier performance, and logistics data to support purchasing decisions, identify risks, and improve operational efficiency.
Monitored customer and supplier payment trends to support cash-flow planning and business performance analysis.
Identified operational inefficiencies through data analysis and contributed to process improvement initiatives across multiple business functions.
Provided first-line IT support for hardware, software, printers, and office technology systems, ensuring minimal disruption to business operations.
Installed, configured, maintained, and troubleshot computer systems, peripheral devices, and business technology infrastructure.
Diagnosed and resolved technical issues to improve system reliability, operational continuity, and user productivity.
Supported digital business operations through effective management of information systems, databases, and technology resources.
Collaborated across operational, sales, and administrative functions to improve data accuracy, reporting quality, and business efficiency.

Founder and Operator - Custom Print Side Business

Managed the full production and fulfilment cycle independently, using CorelDRAW and Canva to design and produce custom products, and handling all customer and order management.