Johnson U.

Key Skills

Software

Other

Top Subject Matter

Multilingual localization and transcript/data-log quality assurance

Computer vision annotation

image-text pairing

Top Data Types

Text

Image

Document

Top Task Types

Bounding Box

Freelancer Overview

I am a Computer Science student specializing in AI data operations, maintaining a 95%+ accuracy rate in computer vision and NLP annotation while strictly ensuring dataset integrity through PII redaction and synthetic data filtering. What truly sets me apart is my native English and Igbo fluency, which allows me to deliver the precise cultural and linguistic localization required for high-impact regional datasets. This powerful combination of technical expertise and bilingual insight ensures I can rapidly master any annotation platform and immediately elevate your model's real-world accuracy

Labeling Experience

AI Data Trainer & Annotation Specialist

OtherImageBounding Box

Completed precise computer vision annotations including bounding boxes and image-text pairings for model training data. Interpreted complex, evolving taxonomy and classification guidelines to label naturally occurring multi-modal digital content. Ensured privacy and dataset integrity by redacting PII and filtering ambiguous or synthetic samples. • Annotated objects using bounding boxes and aligned image-text pairs • Classified multi-format content according to strict project guidelines • Redacted personally identifiable information (PII) for privacy compliance • Flagged and filtered low-quality, ambiguous, or synthetic samples to protect model integrity

2025 - Present

Data Quality Assurance & Multilingual Reviewer

OtherText

Delivered multilingual dataset localization and cultural-context validation for African-English and Igbo content. Reviewed machine-generated transcriptions and digital logs using human-in-the-loop verification to correct grammar and contextual errors. Maintained high semantic reliability while working through continuous high-volume data pipelines. • Validated cross-cultural context and language nuances for regional datasets • Corrected transcription grammar and contextual mistakes from logs • Ensured localized meaning consistency for training data • Managed independent production workflows and throughput quotas

2023 - 2024

Education

Work History