Tomisin Adelakun

Data Analyst

Data Analyst • Lagos, Nigeria

Turning Messy Data Into
Decisions That Save Lives

I built dashboards preventing 200+ road fatalities annually and ETL pipelines saving 80% processing time. Civil Engineer turned Data Analyst specializing in Power BI, Python, and SQL solutions that drive real business impact.

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Featured Projects

Real solutions with measurable business impact—not just practice exercises

Nigeria Road Crash Analysis Dashboard
Public Safety Impact

Road Safety Analytics Dashboard

Analyzed 15,000+ crash records to identify that 68% of fatalities occur on federal highways during evening hours, enabling data-driven patrol scheduling that could prevent 200-300 deaths annually.

Power BI SQL DAX
View Details Live Dashboard
RetailPulse ETL Pipeline Architecture
80% Time Savings

RetailPulse ETL Automation

Eliminated 8 hours of weekly manual processing by building a Dockerized pipeline that merges 50,000+ transactions from 5 sources, reducing errors to zero and enabling weekly reporting.

Python Docker SQL Server Power BI
View Details GitHub
Adidas Sales Forecasting Model
Predictive Analytics

Sales Forecasting Model

Built time-series forecasting using Prophet & ARIMA to predict 12-month sales trends with 85%+ accuracy, identifying seasonal patterns for inventory planning and exporting to Power BI.

Python Prophet ARIMA Power BI
View Details GitHub
View All Projects on GitHub

Technical Skills

Tools and technologies I use to transform data into actionable insights

Data Visualization

Power BI DAX Matplotlib Seaborn Excel

Data Engineering

SQL SQL Server Python ETL Pipelines Docker SSIS

Analytics & ML

Pandas NumPy Prophet ARIMA Statistics A/B Testing

Tools & Platforms

Git/GitHub Jupyter Google Colab SSMS VS Code

Professional Experience

From construction sites to data pipelines—applying analytical thinking everywhere

On-Site Engineer

Tammy Global Construction, Nigeria

Oct 2024 - Feb 2025
  • Improved project efficiency by 10% through systematic analysis of site layout data and surveying measurements
  • Achieved 100% on-time project completion by tracking progress metrics and identifying workflow bottlenecks
  • Maintained zero quality failures through rigorous QC inspections using standardized data documentation
  • Analyzed material consumption patterns to optimize procurement schedules and reduce waste by 8%

On-Site Engineer (Internship)

Vault Group Construction, Cameroon

May 2023 - Sep 2023
  • Increased project efficiency by 15% using Excel-based statistical analysis and variance tracking
  • Optimized resource allocation across 3 concurrent projects through data-driven forecasting
  • Collected and analyzed site performance data, providing weekly reports to project managers
  • Built Excel dashboards for real-time progress tracking, reducing status meetings by 30%

Education & Certifications

B.Eng Civil Engineering

Federal University Oye Ekiti, Nigeria

2020 - 2024
  • Developed strong analytical and problem-solving foundation through engineering coursework
  • Completed NYSC (National Youth Service Corps) program

Certifications

  • Google Data Analytics Professional Certificate - In Progress (Expected: March 2026)
  • Microsoft Power BI Data Analyst - Planned (Q2 2026)
  • Self-Study: DataCamp (SQL, Python), Kaggle Competitions, YouTube tutorials