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Joseph Kofi Tettey

Joseph Kofi Tettey

AI Data Annotator

Ghana flagAccra, Ghana
$10.00/hrIntermediateLabelboxCVATSupervisely

Key Skills

Software

LabelboxLabelbox
CVATCVAT
SuperviselySupervisely

Top Subject Matter

General AI/ML Data Annotation
Finance
E-commerce, product categorization and Customer support

Top Data Types

TextText
ImageImage
AudioAudio
VideoVideo

Top Task Types

Bounding BoxBounding Box
ClassificationClassification
SegmentationSegmentation
TranscriptionTranscription

Freelancer Overview

AI Data Annotator. Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Labelbox, CVAT, and Supervisely. Education includes Bachelor of Science, Accra Institute of Technology (2023) and Higher National Diploma, Accra Technical University (2019). AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including Bounding Box, Classification, and Segmentation.

IntermediateEnglish

Labeling Experience

Labelbox

AI Data Annotator

LabelboxTextBounding BoxClassification
As an AI Data Annotator at RWS, I labeled, categorized, and annotated large volumes of text, image, audio, and video data to support machine learning model development. I reviewed and validated existing annotations, ensuring consistency, correctness, and adherence to detailed guidelines. I utilized annotation platforms (Labelbox, CVAT, Supervisely, Google Labeling tools) to efficiently complete high-volume tasks while collaborating with data scientists and QA teams. • Maintained strict quality standards, following project instructions and adapting quickly to new guidelines. • Performed detailed data validation and QA checks to ensure high accuracy and completeness. • Identified and flagged data quality issues and ambiguous cases for further review. • Achieved daily and weekly productivity targets in a remote/virtual team environment.

As an AI Data Annotator at RWS, I labeled, categorized, and annotated large volumes of text, image, audio, and video data to support machine learning model development. I reviewed and validated existing annotations, ensuring consistency, correctness, and adherence to detailed guidelines. I utilized annotation platforms (Labelbox, CVAT, Supervisely, Google Labeling tools) to efficiently complete high-volume tasks while collaborating with data scientists and QA teams. • Maintained strict quality standards, following project instructions and adapting quickly to new guidelines. • Performed detailed data validation and QA checks to ensure high accuracy and completeness. • Identified and flagged data quality issues and ambiguous cases for further review. • Achieved daily and weekly productivity targets in a remote/virtual team environment.

2025 - 2025

Education

A

Accra Institute of Technology

Bachelor of Science, Information Technology

Bachelor of Science
2023 - 2023
A

Accra Technical University

Higher National Diploma, Purchasing and Supply

Higher National Diploma
2016 - 2019

Work History

L

LINK

Sales Analyst

Accra
2024 - 2024
L

LINK

Data Analyst

Accra
2023 - 2023