Ogundari A.

Key Skills

Software

No software listed

Top Subject Matter

AI training data preparation for classification and entity extraction

Financial/transactional intelligence supervised AI dataset annotation and validation

Structured classification dataset preparation for ML ingestion

Top Data Types

Text

Image

Document

Top Task Types

Classification

Freelancer Overview

Senior Data Quality & AI Training Specialist. Brings 4+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include N, A, and SQL. Education includes Master of Science, Ahmadu Bello University (2025) and Bachelor of Engineering, Federal University of Technology Akure (2016). AI-training focus includes data types such as Text and labeling workflows including Entity (NER) and Classification.

Labeling Experience

Senior Data Quality & AI Training Specialist

Text

Developed and validated high-quality datasets to support AI model training for structured and unstructured inputs. Conducted annotation review and quality assurance for text classification, entity extraction, and semantic labeling tasks. Identified labeling inconsistencies and applied corrective guideline updates that improved annotation accuracy by 30%. • Reviewed annotations against taxonomy and labeling guidelines • Ensured consistency, completeness, and usability for downstream training • Evaluated model-generated outputs and provided corrective feedback for retraining • Used SQL and Python to clean, normalize, and transform datasets for ML readiness

2023 - Present

Data Annotation & Validation Analyst

TextClassification

Annotated enterprise-scale datasets for supervised AI training focused on financial and transactional intelligence. Performed multi-layer validation audits to ensure data consistency, completeness, and policy compliance. Created annotation playbooks and documentation to improve reviewer alignment. • Conducted anomaly detection across large transactional datasets using SQL validation queries • Audited datasets for correctness and compliance before training use • Standardized processes via playbooks and reviewer instructions • Supported dataset cleansing and quality workflows to improve training reliability

2022 - 2023

Data Operations Specialist

TextClassification

Managed data preparation pipelines for ingestion into machine learning systems and executed labeling workflows for structured classification tasks. Maintained dataset integrity through cleansing, deduplication, and enrichment processes to support ML readiness. Coordinated manual and automated labeling activities to keep datasets accurate and consistent. • Prepared structured data for downstream ML consumption • Performed cleansing, deduplication, and enrichment on labeled datasets • Ran automated and manual labeling steps for classification categories • Supported ongoing dataset quality and integrity checks

2021 - 2022

Education

Work History