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Sunday Alao

Sunday Alao

Data Annotation Specialist (Video & Audio)

Nigeria flagLagos, Nigeria
$12.00/hrIntermediate

Key Skills

Software

No software listed

Top Subject Matter

Multimedia/General AI
Speech/Audio AI
Legal Services & Contract Review

Top Data Types

VideoVideo
AudioAudio
TextText
DocumentDocument

Top Task Types

SegmentationSegmentation
ClassificationClassification
TranscriptionTranscription

Freelancer Overview

Data Annotation Specialist (Video & Audio). Core strengths include N and A. AI-training focus includes data types such as Video and Audio and labeling workflows including Segmentation, Classification, and Transcription.

IntermediateEnglishJapanese

Labeling Experience

AI Data Reviewer / Quality Analyst

Video
As an AI Data Reviewer / Quality Analyst, I evaluated annotated datasets for accuracy and completeness. I reviewed AI-generated outputs, applied structured scoring criteria, and contributed to refining annotation standards. I ensured adherence to guidelines and maintained documentation of labeling decisions. • Conducting quality assessments and consistency audits on labeled data • Reviewing, rating, and providing structured feedback on AI outputs • Supporting standards improvements through guideline refinement • Maintaining records of data labeling decisions and process changes.

As an AI Data Reviewer / Quality Analyst, I evaluated annotated datasets for accuracy and completeness. I reviewed AI-generated outputs, applied structured scoring criteria, and contributed to refining annotation standards. I ensured adherence to guidelines and maintained documentation of labeling decisions. • Conducting quality assessments and consistency audits on labeled data • Reviewing, rating, and providing structured feedback on AI outputs • Supporting standards improvements through guideline refinement • Maintaining records of data labeling decisions and process changes.

Present

Audio Segmentation & Tagging Project

AudioTranscription
In the Audio Segmentation & Tagging Project, I annotated audio recordings with speaker labels and timestamp markers. I categorized background sounds and speech patterns for use in machine learning model development. My work supported accurate, machine-readable datasets for AI training. • Labeling speakers and segmenting audio with timestamps • Tagging and classifying background sounds and noise • Supporting transcription and intent tagging tasks • Ensuring audio data meets standards for AI system input.

In the Audio Segmentation & Tagging Project, I annotated audio recordings with speaker labels and timestamp markers. I categorized background sounds and speech patterns for use in machine learning model development. My work supported accurate, machine-readable datasets for AI training. • Labeling speakers and segmenting audio with timestamps • Tagging and classifying background sounds and noise • Supporting transcription and intent tagging tasks • Ensuring audio data meets standards for AI system input.

Present

Multimedia Dataset Labelling Project

VideoClassification
I led a large-scale multimedia dataset labelling project focused on video annotation. My responsibilities included organizing and labelling video data by object type, activity, and environmental context, and ensuring frame consistency. I maintained labeling accuracy and high-quality standards throughout the project. • Managing and annotating extensive video datasets for AI training • Tagging objects and actions across long-duration videos • Ensuring consistency and structure in annotation practices • Verifying accuracy and completeness of labels for model development.

I led a large-scale multimedia dataset labelling project focused on video annotation. My responsibilities included organizing and labelling video data by object type, activity, and environmental context, and ensuring frame consistency. I maintained labeling accuracy and high-quality standards throughout the project. • Managing and annotating extensive video datasets for AI training • Tagging objects and actions across long-duration videos • Ensuring consistency and structure in annotation practices • Verifying accuracy and completeness of labels for model development.

Present

Data Annotation Specialist (Video & Audio)

VideoSegmentation
As a Data Annotation Specialist, I labeled video and audio datasets for machine learning and AI training purposes. I performed frame-level tagging, object detection, and activity classification according to structured annotation guidelines. I also conducted quality checks and collaborated to improve annotation standards. • Tagging and classifying objects and actions in frame-by-frame video datasets • Segmenting audio files with timestamp alignment and speaker identification • Applying annotation guidelines to ensure consistency and accuracy • Performing quality control reviews to minimize labeling errors.

As a Data Annotation Specialist, I labeled video and audio datasets for machine learning and AI training purposes. I performed frame-level tagging, object detection, and activity classification according to structured annotation guidelines. I also conducted quality checks and collaborated to improve annotation standards. • Tagging and classifying objects and actions in frame-by-frame video datasets • Segmenting audio files with timestamp alignment and speaker identification • Applying annotation guidelines to ensure consistency and accuracy • Performing quality control reviews to minimize labeling errors.

Present

Education

F

Federal University of Agriculture Abeokuta, FUNAAB

Bachelor's degree, Mechanical Engineering

Bachelor's degree
2021 - 2026

Work History

N

NEON

Audio data provision

New York
2025 - Present
S

Scale AI

Data analyst, Annotation and samling

New York
2024 - Present