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RebeccaDataSci/README.md

👋 Hi, I'm Rebecca Mosima

🎓 PGDip Data Science | University of the Witwatersrand
⚡ Former Electrician | Anglo American Smelter (Polokwane)
🔬 BSc (Geology & Chemistry) | University of Limpopo
🔧 Data Analyst | Python | SQL | Maintenance Analytics

🚀 About Me

I bridge the gap between heavy industry, scientific thinking, and data science.

  • 🔬 As a Geology & Chemistry graduate, I understand the material being mined and the science behind extraction and processing.
  • ⚡ As a qualified electrician, I understand the equipment, maintenance cycles, Zero Harm, and MHSA regulations.
  • 📊 As a Data Science student (Wits), I'm building skills to reduce downtime and improve operational efficiency.

This combination is rare – and it's exactly what makes me effective at translating messy industrial data into actionable insights.

📌 Featured Projects

1. SANS 10142 Voltage Drop Checker

Industrial Compliance Automation | View Repo

Aspect Details
Tech Stack Python, Pandas, NumPy, Git
What it does Automates electrical installation compliance checks per SANS 10142-1. Calculates voltage drop for cables and flags non-compliant circuits.
Industrial relevance Replaces manual Excel checks for electricians. Directly applicable to maintenance planning, asset compliance, and Zero Harm audits in mining/smelter environments.
Bonus Includes sample cable data and real SANS 10142-1 formulas. Built by a former electrician.

2. HR Analytics System

Data Cleaning + Metrics Pipeline | View Repo

A complete data cleaning + metrics system built for Wits PGDip Programming for Data Science.

Aspect Details
Skills Python, SQL, Pytest, Data Validation
What it does Removes nulls, standardizes text, validates date ranges (2015-2025) with leap year logic, calculates retention rate, turnover, averages
Industrial relevance Logic directly transferable to MTTR/MTBF calculations, equipment uptime, and failure rate analysis
Bonus Includes SQL scripts for ERP/maintenance databases

🔧 Actively seeking a Data Analyst roles where I can apply my unique background – Geology, Chemistry, Electrical, and Data Science – to solve operational problems. Particular interest in equipment reliability, maintenance analytics, and industrial efficiency

Popular repositories Loading

  1. hr-analytics-system hr-analytics-system Public

    Data cleaning and metrics calculation for HR data - built for Wits PGDip Programming module. Transferable to industrial/maintenance analytics.

    Python

  2. RebeccaDataSci RebeccaDataSci Public

  3. sans10142-voltage-drop-checker sans10142-voltage-drop-checker Public

    Python tool for SANS 10142-1 voltage drop compliance checks

    Python