Available for Opportunities

Ogunleye Daniel Ayodeji — ZaylenDAX — Data Analyst

Transforming Complex Data Into
Strategic Business Insights.

I'm a Data Analyst

I help organizations make smarter decisions through data analytics, business intelligence, dashboard design, and actionable insights. Turning raw numbers into strategic advantage.

View Projects → GitHub ⌬ Contact Me

0 Projects

0 Roles

0 Certifications

0 %+ Impact

↑ 20% Sales Improvement

◉ Power BI · SQL · Python

ANALYTICS OVERVIEW · LIVE

Revenue

₦4.2M

↑ 18.4%

Retention

87%

↑ 5.2%

Efficiency

93.1

↑ 12.0%

TOOLS

SQL

PBI

DATASETS

80K+ Records

Logistics · Healthcare

Finance · HR · Retail

80K+ Records Analyzed

About Me

Data-Driven.
Business-Focused.

Legal Name Ogunleye Daniel Ayodeji

Known professionally as ZaylenDAX Data Analyst · Nigeria

I'm a results-driven Data Analyst with deep expertise in SQL, Power BI, Excel, and Python. My approach bridges the gap between raw data and strategic decision-making — I don't just analyze numbers, I translate them into business narratives that stakeholders can act on.

With a background in healthcare (Physiotherapy at OAU) and hands-on experience across pharmacy, geospatial data, logistics, and finance, I bring a uniquely cross-domain analytical perspective. Whether it's identifying 20% sales improvement opportunities or optimizing fleet operations across 80,000+ records, my goal is always the same: deliver clarity from complexity.

I specialize in KPI development, exploratory data analysis (EDA), dashboard design, and data storytelling — combining technical rigour with clear business communication.

SQL & Relational Databases

Power BI & DAX

Python for Analytics

Excel & Power Query

KPI Development

Data Cleaning & ETL

Dashboard Design

Business Intelligence

Data Visualization

Statistical Analysis

Portfolio

Featured Projects

Real-world analytics work spanning logistics, healthcare, finance, HR, and customer intelligence.

Logistics · Operations

Logistics Operations Optimization

Analyzed over 80,000 logistics records to surface operational inefficiencies, delivery delays, and fleet utilization issues impacting supply chain performance.

Business Impact Improved visibility into logistics operations and delivery KPIs through interactive Power BI dashboards tracking driver efficiency, route performance, and delay trends.

SQL Power BI Excel DAX KPI Analysis

GitHub → Case Study

Healthcare · Risk Analysis

Heart Disease Risk Analysis

Cleaned and analyzed healthcare data on patient demographics, clinical indicators, and diagnostic outcomes to uncover correlations between cholesterol, blood pressure, and heart disease prevalence.

Key Insight Bridged clinical knowledge with data analytics to deliver evidence-based insights into cardiovascular risk patterns using EDA and visualization.

SQL Power BI Excel EDA Healthcare

GitHub → Case Study

Finance · Stock Analysis

Tesla Stock Analysis

Analyzed Tesla's historical stock performance to identify price trends, volatility patterns, and key market signals using data transformation and time-series visualization techniques.

Key Insight Delivered trend analysis and performance metrics through interactive dashboards supporting investment decision frameworks.

Python Excel Power BI Time Series Finance

GitHub → Case Study

HR Analytics · Workforce

HR Attrition — Employee Retention & Workforce Optimization

Built a comprehensive HR analytics solution to identify drivers of employee attrition, model retention risk, and surface actionable workforce insights for HR leadership.

Business Impact Enabled HR teams to proactively target high-risk employee segments and optimize retention strategies using data-driven workforce intelligence.

SQL Power BI Excel HR Analytics DAX

GitHub → Case Study

Customer Analytics

Customer Churn Analysis

Conducted customer retention and churn analysis using behavioral and transactional datasets to visualize churn trends, customer segmentation, retention rates, and revenue impact.

Business Impact Strategic recommendations focused on customer retention and business growth opportunities, delivered through interactive Power BI dashboards.

SQL Power BI Segmentation EDA CRM

GitHub → Case Study

Retail · Sales Analytics

Cafe Sales Analysis

Analyzed point-of-sale data for a café business to uncover top-selling products, peak sales hours, revenue trends, and customer purchasing patterns.

Business Impact Actionable insights delivered for inventory optimization, menu pricing strategy, and staff scheduling based on demand pattern analysis.

Excel SQL Power BI POS Data Retail

GitHub → Case Study

Career History

Professional Experience

A track record of delivering data-driven results across pharmacy, geospatial, and government sectors.

Data Analyst

Sept 2024 – Jan 2025

Tolu Pakad Pharmacy — Ado Ekiti, Nigeria

Analyzed pharmacy sales, inventory, and customer transaction data to identify trends and improve operational decision-making.
Designed Excel and Power BI dashboards to monitor product sales, revenue performance, stock movement, and customer purchasing behavior.
Cleaned and transformed raw transactional datasets, improving reporting accuracy and reducing inconsistencies in inventory records.
Generated data-driven insights that improved sales and operational outcomes by 20%.

Data Operations & Validation Officer

Oct 2021 – Jun 2022

Ekiti State Geospatial Data Centre — Ekiti State, Nigeria

Performed large-scale data validation, cleaning, and quality assurance on administrative and geospatial datasets used for institutional planning and mapping.
Processed and standardized multi-source datasets to improve data reliability and reporting consistency.
Assisted in preparing reports and documentation that supported evidence-based planning and operational transparency.
Collaborated with cross-functional teams to improve data workflows and maintain data integrity across projects.

🎓 Education

Bachelor of Physiotherapy (B.PT)

2020 – 2026

Obafemi Awolowo University, Ile-Ife, Nigeria

Combining healthcare domain expertise with data analytics to deliver evidence-based, cross-disciplinary insights across clinical, operational, and strategic contexts.

What They Say

Testimonials

Feedback from colleagues and managers who've experienced the business impact of data-driven analysis.

Daniel has an exceptional ability to turn complex pharmacy data into clear, actionable insights. His dashboards didn't just look good — they directly influenced our inventory strategy and improved our sales outcomes by 20%. Highly professional and thorough.

Pharmacy Manager Tolu Pakad Pharmacy · Ado Ekiti

Working alongside Daniel at the Geospatial Data Centre was impressive. He approached large-scale validation tasks with precision and delivered consistently clean datasets under pressure. His attention to data quality set a high bar for the team.

Senior Data Officer Ekiti State Geospatial Data Centre

Daniel brings both technical depth and business acumen to analytics. His logistics project showcased a rare ability to distill 80,000+ records into executive-ready insights. His storytelling approach to data is what sets him apart from the average analyst.

Analytics Peer Data Analytics Community · Nigeria

Ogunleye Daniel Ayodeji — ZaylenDAX — Data Analyst

Transforming Complex Data Into
Strategic Business Insights.

Data-Driven.
Business-Focused.

Analytical Toolkit