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J

Justus Mwangi

Freelance Transcriptionist for AI Training Projects

Kenya flagNairobi, Kenya
$8.00/hrIntermediateOtherMercorOneforma

Key Skills

Software

Other
MercorMercor
OneFormaOneForma
iMeritiMerit
Data Annotation TechData Annotation Tech
AWS SageMakerAWS SageMaker
Anno-MageAnno-Mage
AppenAppen
ArgillaArgilla
Axiom AI
ClickworkerClickworker
CVATCVAT
CloudFactoryCloudFactory
CrowdFlowerCrowdFlower
CrowdSourceCrowdSource
DataloopDataloop
DatatroniqDatatroniq
DatumboxDatumbox
TelusTelus
V7 LabsV7 Labs
VoTT
Label StudioLabel Studio

Top Subject Matter

Speech-to-Text and AI Training

Top Data Types

AudioAudio
ImageImage
TextText

Top Task Types

TranscriptionTranscription
Bounding BoxBounding Box

Freelancer Overview

Freelance Transcriptionist for AI Training Projects. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. AI-training focus includes data types such as Audio and labeling workflows including Transcription.

IntermediateEnglishSwahili

Labeling Experience

Freelance Transcriptionist for AI Training Projects

OtherAudioTranscription
As a freelance transcriptionist, I transcribe audio recordings into accurate written text for AI and speech-to-text projects. I ensure correct punctuation, formatting, and identification of speakers throughout all transcripts. This role demands high standards of accuracy, consistency, and attention to detail. • Convert diverse audio files, including challenging accents and varying audio quality • Flag unclear segments and meet tight deadlines for project submissions • Follow detailed transcription and labeling guidelines • Utilize specialized transcription software such as Express Scribe and oTranscribe

As a freelance transcriptionist, I transcribe audio recordings into accurate written text for AI and speech-to-text projects. I ensure correct punctuation, formatting, and identification of speakers throughout all transcripts. This role demands high standards of accuracy, consistency, and attention to detail. • Convert diverse audio files, including challenging accents and varying audio quality • Flag unclear segments and meet tight deadlines for project submissions • Follow detailed transcription and labeling guidelines • Utilize specialized transcription software such as Express Scribe and oTranscribe

2025 - Present

Data Annotator

ImageBounding Box
I worked as a Data Annotator at iMerit, contributing to computer vision projects by preparing high-quality image datasets for machine learning models. My role involved performing bounding box annotation, where I accurately identified and enclosed objects within images, classified them according to predefined categories, and handled complex cases such as occlusions and overlapping objects. The project covered thousands of images, requiring consistency, speed, and attention to detail. I adhered to strict quality guidelines by maintaining high annotation accuracy, conducting self-reviews, applying feedback from QA teams, and ensuring all work met defined precision and turnaround standards.

I worked as a Data Annotator at iMerit, contributing to computer vision projects by preparing high-quality image datasets for machine learning models. My role involved performing bounding box annotation, where I accurately identified and enclosed objects within images, classified them according to predefined categories, and handled complex cases such as occlusions and overlapping objects. The project covered thousands of images, requiring consistency, speed, and attention to detail. I adhered to strict quality guidelines by maintaining high annotation accuracy, conducting self-reviews, applying feedback from QA teams, and ensuring all work met defined precision and turnaround standards.

2025 - 2026

Education

J

Jomo Kenyatta Univeristy of Agriculture and Technology

Bachelor's , Agriculture

Bachelor's
2022 - 2026

Work History

R

Remote Teams

Freelance Transcriptionist

Nairobi
2025 - Present