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James Kumangh

James Kumangh

Data Quality Assurance Assistant - Public Health

NIGERIA flag
Abuja, Nigeria
$35.00/hrIntermediateToloka

Key Skills

Software

TolokaToloka

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText
VideoVideo

Top Label Types

Bounding Box

Freelancer Overview

I am a detail-oriented data contributor with hands-on experience in producing high-quality video datasets for AI and robotics training. My background includes data quality assurance for large-scale census operations, where I supervised data monitoring, conducted verification checks, and generated structured analytical reports. I am skilled in following detailed guidelines to ensure accuracy, clarity, and consistency in data labeling and annotation processes. My ongoing training in data analysis and visualization, combined with my technical proficiency in digital content management and frontend web development, enables me to transform raw data into reliable, audience-friendly outputs for AI and machine learning applications.

IntermediateEnglishHausa

Labeling Experience

Toloka

AI Data Annotator

TolokaAudioBounding Box
Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

2023 - 2024
Toloka

AI Data Annotator-Multi Modal(Toloka)

TolokaVideoBounding Box
Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

2023 - 2024
Toloka

AI Data Annotator-Multi Modal(Toloka)

TolokaImageBounding Box
Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

Worked as a Data Annotator on Toloka, contributing to multi-modal AI training datasets across image, video, and audio projects. Performed bounding box annotation for object detection tasks, accurately labeling people, vehicles, products, and environmental objects to support computer vision model development. Conducted video annotation including frame-by-frame object tracking and activity recognition tasks. Completed audio-based labeling tasks such as speech quality evaluation, transcription validation, intent classification, and audio categorization to improve speech recognition and NLP systems. Maintained high annotation accuracy by strictly following project guidelines, participating in quality control reviews, and resolving edge-case ambiguities. Consistently met project deadlines while maintaining precision and labeling consistency across large datasets

2023 - 2024

Education

N

Nasarawa State University, Keffi

Master of Public Health, Public Health

Master of Public Health
2025 - 2025
B

Bingham University, Karu

Bachelor of Science, Human Physiology

Bachelor of Science
2017 - 2021

Work History

N

National Population Commission

Data Quality Assurance Assistant

Gombe
2023 - 2023
T

Taraba State University

Graduate Assistant

Jalingo
2022 - 2022