Fisayo Olawale Ajayi

March 2021 — Present

Quality Analyst

• —Evaluated over 400,000 annotated records, contributing to high-quality datasets and a 92% model accuracy rate.
• —Developed and monitored performance and quality metrics, providing insights that improved data handling efficiency by 15%.
• —Conducted data validation, root-cause analysis, and reporting to ensure dataset accuracy and reliability for model training.
• —Collaborated with cross-functional teams to optimize data workflows, increasing operational efficiency by 20%.

December 2021 — Present

Data Analyst

• —Executed end-to-end workflows involving advanced wrangling, multivariate analysis, and model development using Decision Trees, Random Forest, and Neural Networks to extract predictive insights from complex datasets with 95% accuracy.
• —Built optimized Python (Pandas, NumPy, scikit-learn) and SQL pipelines, implementing 95% efficient classification models and evaluating performance with confusion matrices and related metrics to produce deployment-ready outputs.
• —Applied inferential statistics and regression techniques with 95% accuracy which support predictive analytics initiatives.