Seun Olayinka

Key Skills

Software

Toloka

Other

Top Subject Matter

Financial and business document analysis

Technical document annotation and validation

Top Data Types

Text

Image

Video

Top Task Types

Classification

Segmentation

RLHF

Question Answering

Evaluation/Rating

Freelancer Overview

Document Validation Specialist. Brings years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Toloka and other. Education includes Bachelor of Technology, Rivers State University (2019). AI-training focus includes data types such as Document and labeling workflows including Classification.

Labeling Experience

Document Validation Specialist

TolokaDocumentClassification

As a Document Validation Specialist at Toloka, I performed comprehensive audits of AI-extracted data from complex financial and multi-page documents. I ensured every field in the output matched the original PDFs with zero error tolerance for downstream machine learning ingestion. I systematically reviewed data schemas and cross-referenced nested structures to maintain mathematical and structural accuracy. • Conducted field-by-field verification between PDFs and JSON outputs • Corrected extraction errors to improve AI model accuracy • Documented recurring annotation issues and ambiguous edge cases • Maintained rigorous quality standards for data ingestion pipelines.

As a Document Validation Specialist at Toloka, I performed comprehensive audits of AI-extracted data from complex financial and multi-page documents. I ensured every field in the output matched the original PDFs with zero error tolerance for downstream machine learning ingestion. I systematically reviewed data schemas and cross-referenced nested structures to maintain mathematical and structural accuracy. • Conducted field-by-field verification between PDFs and JSON outputs • Corrected extraction errors to improve AI model accuracy • Documented recurring annotation issues and ambiguous edge cases • Maintained rigorous quality standards for data ingestion pipelines.

2018 - Present

Data Quality Analyst

OtherDocumentClassification

As a Data Quality Analyst at NDDC, I managed high-volume annotation and proofreading workflows for document validation projects. I defined and refined guidelines for new document types to support AI training initiatives. I verified the accuracy of extracted data points against internal databases to maintain high standards of quality. • Led remote data labeling operations for complex documents • Authored annotation protocols for technical team use • Regularly compared multi-page report data for consistency checks • Ensured adherence to daily volume and accuracy targets.

As a Data Quality Analyst at NDDC, I managed high-volume annotation and proofreading workflows for document validation projects. I defined and refined guidelines for new document types to support AI training initiatives. I verified the accuracy of extracted data points against internal databases to maintain high standards of quality. • Led remote data labeling operations for complex documents • Authored annotation protocols for technical team use • Regularly compared multi-page report data for consistency checks • Ensured adherence to daily volume and accuracy targets.

2009 - 2014

Education

Work History