Oluwajoba

Key Skills

Software

Appen

Labelbox

Telus

Toloka

Top Subject Matter

Yoruba and Nigerian English conversational AI dialogue annotation

linguistic quality assurance

AI training data quality assurance and evaluation (video review)

Top Data Types

Text

Video

Audio

Document

Top Task Types

Text Generation

Transcription

Evaluation/Rating

RLHF

Data Collection

Prompt + Response Writing (SFT)

Fine-tuning

Question Answering

Freelancer Overview

AI Dialogue Annotation Specialist (English–Nigeria & Yoruba). Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen, Don't disclose, and Polyglot. Education includes Bachelor of Arts, University of Ibadan and Diploma in Mass Communication, The Polytechnic, Ibadan. AI-training focus includes data types such as Text, Video, and Audio and labeling workflows including Text Generation, Evaluation, and Rating.

Labeling Experience

Freelance Yoruba Translator, Transcriptionist & Localization Specialist

AudioTranscription

Performed Yoruba transcription, segmentation, and dataset creation for AI and research projects. Translated and localized Yoruba content for software and academic resources to support language data preparation. Maintained confidentiality and precision when handling sensitive materials. • Created transcription and segmented text/audio content for dataset building • Produced localized Yoruba materials including UI strings, manuals, and prompts • Compiled Yoruba terminology glossaries to support consistent language usage • Utilized localization workflows and tooling for preparing structured outputs

2019 - Present

Quality Assurance and Data Specialist

Don't discloseVideo

Managed high-volume AI training video review quality assurance tasks with a strong focus on data accuracy. Conducted rigorous quality audits against technical documentation and project-specific guidelines. Provided detailed bug reports and constructive feedback to improve final deliverables. • Performed compliance-focused reviews for accuracy and guideline adherence • Identified issues and submitted detailed feedback to developers and project leads • Supported high-priority data processing work through freelance marketplace coordination • Ensured quality standards for data-driven AI training outputs

2023 - 2026

AI Dialogue Annotation Specialist (English–Nigeria & Yoruba)

AppenTextText Generation

Annotated, labeled, and evaluated 1,000+ dialogues to train conversational AI for Yoruba and Nigerian English. Performed semantic, pragmatic, sentiment, and intent analysis focused on meaning, tone, and cultural context. Conducted Linguistic Quality Assurance (LQA) reviews to ensure dataset accuracy and consistency. • Labeled dialogue instances and evaluated outputs for fluency and appropriateness • Reviewed AI-generated Yoruba responses for correctness, tone, and cultural suitability • Collaborated with linguists, data scientists, and quality teams to refine annotation guidelines • Used Appen Platform, Labelbox, and Telus Annotation Console for annotation and review

2024 - 2024

Education

Work History