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Joh Johnson

Joh Johnson

Freelance Data entry, Data Labeling & AI Training Contributor

TANZANIA flag
Dodoma, Tanzania
$8.00/hrIntermediateOtherLabelboxLabel Studio

Key Skills

Software

Other
LabelboxLabelbox
Label StudioLabel Studio
RoboflowRoboflow

Top Subject Matter

General AI/Machine Learning Datasets
General AI/Machine Learning Datasets (Speech/Transcription)
Legal Services & Contract Review

Top Data Types

TextText
AudioAudio
ImageImage
DocumentDocument

Top Task Types

Classification
Transcription

Freelancer Overview

Freelance Data Labeling & AI Training Contributor. Core strengths include Other. Education includes Bachelor of Science, University of Dodoma (2023). AI-training focus includes data types such as Text and Audio and labeling workflows including Classification and Transcription.

IntermediateEnglishSwahili

Labeling Experience

Freelance Data Labeling & AI Training Contributor

OtherTextClassification
As a Freelance Data Labeling & AI Training Contributor, I annotated and labeled datasets used for AI and machine learning model training. My work included text classification, sentiment analysis, entity recognition, image annotation, and audio labeling. I ensured data quality and compliance with annotation guidelines for high accuracy. • Conducted text classification for labeling polarity and intent. • Labeled audio for speech-to-text, speaker ID, and noise tagging. • Annotated images for object detection and categorization. • Reviewed and validated large data batches to ensure reliability.

As a Freelance Data Labeling & AI Training Contributor, I annotated and labeled datasets used for AI and machine learning model training. My work included text classification, sentiment analysis, entity recognition, image annotation, and audio labeling. I ensured data quality and compliance with annotation guidelines for high accuracy. • Conducted text classification for labeling polarity and intent. • Labeled audio for speech-to-text, speaker ID, and noise tagging. • Annotated images for object detection and categorization. • Reviewed and validated large data batches to ensure reliability.

2024 - Present

Freelance Transcriber (Swahili – English)

OtherAudioTranscription
As a Freelance Transcriber, I transcribed and labeled Swahili and English audio data to support AI dataset creation. My tasks included speaker segmentation, noise tagging, and labeling non-speech sound events. I maintained fast turnaround and high accuracy per instruction guidelines. • Transcribed conversational audio into text for machine learning use. • Segmented speakers and accurately labeled speech blocks. • Tagged background noise and special sound events in recordings. • Delivered annotated data on strict deadlines for AI projects.

As a Freelance Transcriber, I transcribed and labeled Swahili and English audio data to support AI dataset creation. My tasks included speaker segmentation, noise tagging, and labeling non-speech sound events. I maintained fast turnaround and high accuracy per instruction guidelines. • Transcribed conversational audio into text for machine learning use. • Segmented speakers and accurately labeled speech blocks. • Tagged background noise and special sound events in recordings. • Delivered annotated data on strict deadlines for AI projects.

2023 - Present

Education

U

University of Dodoma

Bachelor of Science, Cyber Security and Digital Forensics Engineering

Bachelor of Science
2023

Work History

E

EazyBu

Security analysr

Dodoma
2021 - 2025