Hi, I'm Ellias Sithole

Mathematics Graduate • Aspiring Developer • Data Enthusiast

"Integrating logic, creativity, coding, and data science to develop impactful and meaningful solutions."

About Me

I am a problem-solver by nature, with a strong background in mathematics and a growing career in software development and data science. I hold an MSc in Pure Mathematics from the University of the Witwatersrand and have gained industry experience through internships, professional roles at PepsiCo, and several hands-on personal and collaborative projects. My goal is to merge mathematical thinking and technology to create impactful, data-driven solutions. I love learning and growing as an individual, continuously improving my skills and expanding my knowledge in technology and beyond.

Experience

Intern Junior Developer – NVisionIT

Nov 2024 – Jan 2025

Assisted in the development of commercial web applications by collaborating closely with development teams on a variety of projects. Applied user-centered interaction design principles to enhance usability and engagement while gaining hands-on experience with modern web frameworks and technologies. Contributed to writing, testing, and refining code to ensure robust and efficient application functionality.

Network Transformation (Network Modeler) – PepsiCo

Jan 2023 – Dec 2023

I collaborated closely with various functions to communicate data requirements essential for building network models, engaging regularly with Regional and Front Line Managers within the warehouse environment. I was responsible for tracking and collecting accurate data to ensure timely delivery of these models, rigorously validating input data for accuracy. Additionally, I worked with stakeholders to integrate appropriate assumptions, ensuring the models reflected practical and relevant business insights.

Finance & Revenue Management Graduate – PepsiCo

Aug 2021 – Jan 2023

Completed a comprehensive 2-month induction covering Research and Development, Supply Chain, Commercial Operations, and Finance. Undertook a 3-month site placement at Simba’s snacks manufacturing facility in Isando, supporting operational efficiency and quality assurance. Rotated through multiple Finance departments over 8 months, developing skills in financial analysis, budgeting, and reporting. Led key projects including a Sustainability initiative for the West and Central Africa region and the creation of a Brand Ladder Pricing Index to optimize pricing strategies. In the final phase, managed a specialized Net Revenue Management project.

Aim & Mission

My mission is to solve real-world problems using logic and creativity through technology. Working on projects has sharpened my ability to write clean, functional code and reinforced the importance of user-centered design and maintainability.

Technologies like JavaScript, HTML, CSS, SQL, Git, and GitHub have taught me collaboration, problem-solving, and the value of lifelong learning. Each project I complete improves not only my technical skills but also my ability to think critically and deliver results.

Projects

Weather App

This Weather App is a dynamic, JavaScript-powered project featured on my portfolio, built to display real-time weather information based on user input. By integrating with a public weather API, it fetches and presents current temperature, conditions, humidity, and wind speed in a clean, responsive interface.

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Power BI Sales Performance Dashboard

This project presents a comprehensive Power BI dashboard analyzing sales performance, customer satisfaction, and inventory distribution across various outlet and product dimensions. The goal is to uncover key insights and identify opportunities for optimization and strategic decision-making using dynamic visuals and KPIs.

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Password Generator

This Random Password Generator App is a JavaScript-based project featured on my portfolio, designed to showcase my skills in creating secure and interactive web applications. The tool allows users to generate strong, customizable passwords by selecting criteria such as length, uppercase/lowercase letters, numbers, and special characters. It features real-time feedback, responsive design, and clean UI.

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Age Calculator

This JavaScript Age Calculator is a featured project on my portfolio website, showcasing my ability to build interactive, user-friendly web tools using core JavaScript. It allows users to input their date of birth and instantly see their exact age in years, months, and days through precise date calculations and responsive UI updates.

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Motor Collisions Analysis

This Motor Vehicle Collisions SQL Analysis project is a data-driven investigation featured on my portfolio, highlighting my ability to extract insights from large, real-world datasets using SQL. By exploring patterns in collision data—such as peak accident hours, contributing factors, borough-wise impact, and vehicle types involved—I applied advanced SQL concepts like CTEs, window functions, subqueries, and aggregate analysis.

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Retail Sales Analysis

This project showcases the use of SQL to analyze retail sales data for insights on customer behavior, product performance, and sales trends. It involves table creation, data cleaning, exploration, and answering real-world business questions using SQL.

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🔗 See more on GitHub.

Education

MSc in Pure Mathematics, University of the Witwatersrand (2020–2021)

BSc Hons in Pure Mathematics, University of the Witwatersrand (2019)

BSc in Computational & Applied Mathematics, University of the Witwatersrand (2015–2018)

Skills

Languages

JavaScriptSQL (T-SQL)HTMLCSS

Tools & Frameworks

Power BIPower AppsSSMSGitGitHubVS Code

Other

Microsoft OfficeLaTeXSpatialXL

Soft Skills

Data AnalysisCreativity & InnovationQuantitative Research AdaptabilityCustomer EngagementProblem Solving CollaborationWork Ethic

Certifications