Harold K.

Key Skills

Software

Other

Top Subject Matter

AI content annotation for machine learning datasets

Text evaluation and proofreading for AI training data

Audio transcription and language quality improvement for AI training data

Top Data Types

Image

Text

Audio

Video

Document

Top Task Types

Object Detection

Transcription

Freelancer Overview

Freelance Data Contributor / AI Support Assistant (Self-Employed). Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Arts, University of Nairobi (2006) and High School Diploma, St. George’s High School (1998). AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Object Detection, Evaluation, and Rating.

Labeling Experience

Oromo–English Translator / Transcriber (Freelance)

OtherAudioTranscription

Reviewed and worked with audio content in Oromo and English to support grammatical accuracy and fluency. Transcribed Oromo audio recordings with high accuracy while following timestamp and formatting rules. Proofread and corrected machine-translated Oromo text to improve natural language quality for AI-related usage. • Oromo audio transcription • Timestamp and formatting compliance • Oromo/English audio text review • Post-editing machine translation for fluency

2023 - Present

Freelance Data Contributor / AI Support Assistant (Self-Employed)

OtherText

Conducted pairwise comparisons of AI-generated content to evaluate relevance and overall quality. Reviewed Oromo and English text for grammatical accuracy and natural fluency as part of dataset validation. Ensured linguistic quality to improve usability of annotated text for AI systems. • Pairwise comparison for relevance/quality • Grammar and fluency proofreading • Oromo-English text review • Text dataset quality assurance

2023 - Present

Freelance Data Contributor / AI Support Assistant (Self-Employed)

OtherImageObject Detection

Provided accurate data labeling and categorization for micro-task datasets using supplied guidelines. Tagged objects in images and videos, ensuring consistency with annotation requirements and quality checks. Performed additional relevance and quality assessments to support downstream AI model improvements. • Image and video object tagging • Guideline-following annotation work • Quality-focused review of labeled outputs • Pairwise comparison for relevance scoring

2023 - Present

Education

Work History