Joanna Onoja
@joannaonoja
Data analyst focused on retail analytics, inventory optimization, and actionable BI insights.
NigeriaWhat I'm looking for
I am a results-driven Data Analyst with over two years' experience transforming retail data into actionable insights using Power BI, Advanced Excel, Google Sheets and ERP systems. I have a proven track record in multi-location performance tracking, inventory optimization, demand planning, and cross-functional collaboration that improves operations and protects margins.
At Slot Limited and Store of Essence, I built dashboards and reporting systems, optimized inventory and reorder efficiency, analyzed promotional effectiveness, and supported procurement and vendor reconciliation efforts. I combine technical skills in data modeling, DAX, and SAP with strong stakeholder communication to deliver measurable business impact.
Experience
Work history, roles, and key accomplishments
Data Analyst
Slot Limited Nigeria
Sep 2024 - Present (1 year 1 month)
Created Power BI and Excel dashboards and Google Sheets systems to track sales, inventory, and multi-location performance across 14+ franchise stores, enabling timely procurement actions and improving stock visibility. Collaborated with Finance and Procurement to reconcile vendor payments and rebates, support purchase order processes, and protect margins via SAP pricing verification.
Data Analyst
Store of Essence
Feb 2022 - Nov 2023 (1 year 9 months)
Built customer satisfaction tracking models and delivered inventory optimization and customer segmentation insights that improved reorder efficiency and product availability by 25%. Conducted market research and documented customer feedback to inform product and retention strategies.
Education
Degrees, certifications, and relevant coursework
ULUniversity of Lagos
Bachelor of Arts, Philosophy
Grade: Second Class Upper Division
Completed a Bachelor of Arts in Philosophy, graduating with Second Class Upper Division.
ULUniversity of Lagos
Diploma, Mass Communication
Completed a Diploma in Mass Communication at the University of Lagos, Akoka campus.
Tech stack
Software and tools used professionally
Availability
Location
NigeriaAuthorized to work in
Job categories
Skills
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