BEST OHAH

Data Analyst | Business Intelligence Analyst
Nigeria, NG.

About

Highly analytical Data Analyst and Analytics Instructor with a proven track record of transforming complex data into actionable insights across health tech, logistics, and edtech sectors. Expert in SQL, Python, Power BI, Excel, and Tableau, leveraging advanced analytical methods like A/B testing and funnel optimization to drive strategic decision-making. Adept at building scalable data infrastructure, developing impactful dashboards, defining KPIs, and mentoring aspiring analysts, ensuring high-impact data solutions and fostering data literacy.

Work

Ruto AI
|

Strategic Data & Insights Lead

Nigeria, Nigeria, Nigeria

Summary

Led data infrastructure development and strategic insights generation for RutoAI, driving performance tracking and informed decision-making.

Highlights

Defined and led development of RutoAI's data infrastructure, establishing key performance indicators (KPIs) including vendor lifetime value, escrow velocity, and dispute resolution rates to enhance performance tracking.

Constructed foundational dashboards with SQL and Power BI, enabling real-time monitoring of vendor segmentation, conversion funnels, escrow lifecycle, and product usage metrics.

Analyzed vendor acquisition and retention patterns to identify high-value behaviors and critical friction points, optimizing onboarding and platform engagement strategies.

Partnered with product and engineering teams to structure internal datasets, facilitating fraud detection, pricing calibration, and AI integration workflows.

Contributed to internal data strategy by designing core business process documentation and initial metrics frameworks, surfacing key insights for product development and fundraising decisions.

Correlation One
|

Lead Instructor: Data Analytics

New York, NY, United States

Summary

Delivered hands-on data analytics training and developed curriculum for global cohorts at Correlation One, enhancing learner skills and engagement.

Highlights

Delivered live, hands-on training sessions on data analysis, including Microsoft Excel, SQL, Power BI, and Tableau, to global cohorts.

Designed and refined data analytics curriculum modules in collaboration with instructional design team, ensuring alignment with industry standards and learner needs.

Mentored and provided academic support to learners, offering real-time guidance and project-based learning support.

Analyzed learner engagement data to suggest and implement enhancements, improving course delivery and scheduling.

EHealth4Everyone
|

Data Analyst

Nigeria, Nigeria, Nigeria

Summary

Developed an interactive Tableau dashboard for EHealth4Everyone, enabling data-informed healthcare planning.

Highlights

Developed an interactive Tableau dashboard visualizing over 40,000+ health facility records across Nigeria, enabling data-informed healthcare planning decisions for stakeholders.

Validated large volumes of health-related data using Excel, ensuring integrity, consistency, and readiness for integration into centralized databases.

Conducted structured data entry from field surveys, supporting timely and accurate reporting for government and donor-funded health programs.

Collaborated with internal teams to maintain data accuracy, resolve discrepancies, and enhance data quality protocols for health analytics.

Axia Hub
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Data Analyst & Instructor

Nigeria, Nigeria, Nigeria

Summary

Delivered comprehensive data analysis and training for a transport and logistics company at Axia Hub, supporting strategic expansion and student readiness.

Highlights

Delivered comprehensive analysis for a transport and logistics company, evaluating year-on-year business growth, user retention, and revenue trends to directly support strategic expansion decisions.

Conducted A/B testing initiatives with product and marketing teams, generating insights that improved campaign effectiveness and user engagement.

Facilitated in-person and virtual training for aspiring data analysts in SQL, Power BI, Excel, and Python, incorporating real-world projects and hands-on exercises.

Designed data-driven lesson plans, course modules, and assessments, contributing to a 20% increase in student course completion rates and enhancing job readiness.

Axia Hub
|

Head of Academy

Nigeria, Nigeria, Nigeria

Summary

Oversaw academy operations and training delivery at Axia Hub, enhancing program execution and participant satisfaction.

Highlights

Oversaw academy operations, including recruitment, training delivery, and instructor support, ensuring seamless program execution across software development, data analysis, graphics design, and digital marketing.

Coordinated staff scheduling, learning resources, and internal systems, enhancing training quality and participant satisfaction.

Introduced operational improvements, reducing training overhead by 15% while simultaneously improving learner feedback scores.

Collaborated with leadership to align training strategies with industry demand, contributing to a 25% increase in academy enrollment within 6 months.

Education

University of Nigeria
Nigeria, Nigeria, Nigeria

Bachelor in Science

Geology

AltSchool Africa
Nigeria, Nigeria, Nigeria

Data Engineering

Turing College
Nigeria, Nigeria, Nigeria

Data Analytics

Skills

Tools

SQL (BigQuery, PostgreSQL, Microsoft SQL Server), Microsoft Excel, Python (Pandas, NumPy, Matplotlib, Seaborn), Power BI, Tableau, Google Sheets, Looker Studio, HubSpot CRM, Git, GA4.

Analytical Techniques

A/B Testing, Cohort Analysis, Retention & Churn Analysis, Funnel Analysis, Customer Lifetime Value (CLV), Customer Acquisition Cost (CAC), Product Usage Analytics.

Workflow Automation

ETL/ELT Processes, Data Cleaning & Preparation, Dashboard Templating, Reporting Pipeline Automation, Data Quality Checks.

Projects

Subscriber Retention Analysis

Summary

Conducted SQL-based analysis of customer data to identify trends, supporting retention strategies transferable to evaluating biotech investment portfolios.

Promotional A/B Test

Summary

Executed an A/B test for a fast-food chain to determine which of three marketing promotions led to the highest sales boost, showcasing analytical rigor for investment decision support.

Customer Segmentation

Summary

Used SQL and Power BI to segment a large customer base into distinct personas. This analysis formed the foundation for developing targeted brand messaging and content strategies to increase engagement.