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Hagin Taiwo

Hagin Taiwo

Expert in data annotation and labeling across diverse AI model types.

Nigeria flaglagos, Nigeria
$15.00/hrIntermediateCVATLabelboxLabel Studio

Key Skills

Software

CVATCVAT
LabelboxLabelbox
Label StudioLabel Studio
SuperAnnotateSuperAnnotate
Internal/Proprietary Tooling

Top Subject Matter

No subject matter listed

Top Data Types

ImageImage
TextText
VideoVideo

Top Task Types

Action Recognition
Bounding Box
Classification
Polygon
Relationship

Freelancer Overview

Experienced and detail-focused data annotation expert with several years of contract work supporting AI/ML product development for one of the world’s largest social media companies (under NDA). I have annotated and reviewed large-scale, multimodal datasets—including video, image, audio, and text—used to train and refine applications in social platforms, image/video optimization, and conversational AI.

IntermediateFrenchYorubaEnglishSpanish

Labeling Experience

Video Annotation

Internal Proprietary ToolingVideoText GenerationEmotion Recognition
The project focused on high-resolution video annotation to support the development of advanced AI models for human action recognition. The goal was to provide detailed, low-level visual descriptions of scenes to enhance model understanding for applications such as behavior tracking, accessibility support, and safety analytics. Specific Data Labeling Tasks Performed: Annotated video clips using a structured format that included: Scene and lighting description Character identification and spatial positioning Object appearance and placement Timestamped action tracking Camera movement descriptions Ensured allocentric directionality and avoided high-level assumptions as per strict annotation protocol. Labeling emotions only when visually verifiable. Maintaining >97% accuracy through layered QA reviews. Adapting to evolving guidelines, document edge cases, and maintain annotation consistency across distributed teams.

The project focused on high-resolution video annotation to support the development of advanced AI models for human action recognition. The goal was to provide detailed, low-level visual descriptions of scenes to enhance model understanding for applications such as behavior tracking, accessibility support, and safety analytics. Specific Data Labeling Tasks Performed: Annotated video clips using a structured format that included: Scene and lighting description Character identification and spatial positioning Object appearance and placement Timestamped action tracking Camera movement descriptions Ensured allocentric directionality and avoided high-level assumptions as per strict annotation protocol. Labeling emotions only when visually verifiable. Maintaining >97% accuracy through layered QA reviews. Adapting to evolving guidelines, document edge cases, and maintain annotation consistency across distributed teams.

2025 - 2025

One Vision & Personalized Image Evaluation Project

Internal Proprietary ToolingImageBounding BoxPolygon
Contributed to an AI project focused on personalized image understanding and visual content evaluation. Scope involved labeling thousands of images using bounding boxes, classification tags, and relevance scoring for personalization algorithms. Using tools like CVAT and Labelbox, I maintained over 96% accuracy across QA reviews. Helped boost model precision on a key dataset split from 68% to 88% by identifying annotation inconsistencies early and proposing refinements to label definitions. Collaborated with QA reviewers to implement edge-case examples, leading to fewer rejections and faster throughput. Labeled over 15,000 images across two phases and consistently ranked among the top 10% of annotators for both speed and quality.

Contributed to an AI project focused on personalized image understanding and visual content evaluation. Scope involved labeling thousands of images using bounding boxes, classification tags, and relevance scoring for personalization algorithms. Using tools like CVAT and Labelbox, I maintained over 96% accuracy across QA reviews. Helped boost model precision on a key dataset split from 68% to 88% by identifying annotation inconsistencies early and proposing refinements to label definitions. Collaborated with QA reviewers to implement edge-case examples, leading to fewer rejections and faster throughput. Labeled over 15,000 images across two phases and consistently ranked among the top 10% of annotators for both speed and quality.

2024 - 2025

Education

G

Google

Certificate, Ux Design

Certificate
2022 - 2023
G

Google

Certificate, Digital Marketing

Certificate
2022 - 2022

Work History

M

Ministry of Science and Technology

Database Manager

N/A
2022 - 2023
I

Ibu-Aje Microfinance Bank

Banking Intern

N/A
2019 - 2020