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Alfred Omosona

Alfred Omosona

AI Data Annotation Specialist

Nigeria flagLagos, Nigeria
$20.00/hrIntermediateAppenData Annotation TechMercor

Key Skills

Software

AppenAppen
Data Annotation TechData Annotation Tech
MercorMercor
OneFormaOneForma

Top Subject Matter

Computer vision
speech recognition
sentiment analysis

Top Data Types

ImageImage
VideoVideo
TextText
AudioAudio
DocumentDocument

Top Task Types

Bounding BoxBounding Box
PolygonPolygon
Point/Key PointPoint/Key Point
PolylinePolyline
Entity (NER) ClassificationEntity (NER) Classification
SegmentationSegmentation
ClassificationClassification
Object DetectionObject Detection
TrackingTracking
Emotion RecognitionEmotion Recognition
Text GenerationText Generation
Question AnsweringQuestion Answering
TranscriptionTranscription
Data CollectionData Collection

Freelancer Overview

AI Data Annotation Specialist, Hugo Technologies Inc.. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Science, University of Ilorin (2022). AI-training focus includes data types such as Image, Video, and Text and labeling workflows including Bounding Box, Polygon, and Point.

IntermediateEnglish

Labeling Experience

AI Data Annotation Specialist, Hugo Technologies Inc.

ImageBounding BoxPolygon
As an AI Data Annotation Specialist at Hugo Technologies Inc., I performed large-scale annotation and labeling of multi-modal datasets including images, text, audio, video, sensor, and medical data for AI model training. My work included bounding boxes for objects and products, polygons for organs and road lanes, key points for facial and skeletal feature mapping, polyline and segmentation for tracking and pathways, and NER for text data. I ensured datasets met project quality objectives by adhering to strict quality controls and collaborating closely with ML engineers. • Managed data preprocessing, such as cleaning, augmenting, and noise reduction. • Annotated healthcare, autonomous driving, retail, and sentiment analysis domains. • Validated team work, provided feedback, and improved annotation tools and templates. • Delivered reports on dataset quality, error trends, and annotation productivity.

As an AI Data Annotation Specialist at Hugo Technologies Inc., I performed large-scale annotation and labeling of multi-modal datasets including images, text, audio, video, sensor, and medical data for AI model training. My work included bounding boxes for objects and products, polygons for organs and road lanes, key points for facial and skeletal feature mapping, polyline and segmentation for tracking and pathways, and NER for text data. I ensured datasets met project quality objectives by adhering to strict quality controls and collaborating closely with ML engineers. • Managed data preprocessing, such as cleaning, augmenting, and noise reduction. • Annotated healthcare, autonomous driving, retail, and sentiment analysis domains. • Validated team work, provided feedback, and improved annotation tools and templates. • Delivered reports on dataset quality, error trends, and annotation productivity.

2020 - 2026

Data Annotator Quality Analyst, Hugo Technologies Inc.

ImageClassification
As a Data Annotator Quality Analyst at Hugo Technologies Inc., I conducted quality assurance reviews on annotated datasets including images, audio, video, and text. I ensured annotations were accurate, consistent, and met client specifications. By developing guidelines and providing feedback, I helped maintain high accuracy benchmarks across projects. • Detected and corrected annotation errors to increase overall dataset quality. • Created error trend reports and refined annotation instructions with project managers. • Provided coaching to annotators and improved team accuracy scores to 99%. • Maintained compliance with all project-specific quality and deadline requirements.

As a Data Annotator Quality Analyst at Hugo Technologies Inc., I conducted quality assurance reviews on annotated datasets including images, audio, video, and text. I ensured annotations were accurate, consistent, and met client specifications. By developing guidelines and providing feedback, I helped maintain high accuracy benchmarks across projects. • Detected and corrected annotation errors to increase overall dataset quality. • Created error trend reports and refined annotation instructions with project managers. • Provided coaching to annotators and improved team accuracy scores to 99%. • Maintained compliance with all project-specific quality and deadline requirements.

2020 - 2024

Education

U

University of Ilorin

Bachelor of Science, Quantity Survey

Bachelor of Science
2017 - 2022

Work History

N

N/A

Outreach Manager

Lagos
2020 - 2025
N

N/A

Medical Outreach Coordinator

Lagos
2018 - 2019