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Mathias Kuria

Mathias Kuria

Data Annotation Specialist - AI & Machine Learning

KENYA flag
Nairobi City, Kenya
$10.00/hrIntermediateLabelboxMercorScale AI

Key Skills

Software

LabelboxLabelbox
MercorMercor
Scale AIScale AI
Snorkel AISnorkel AI
TelusTelus
Other
Don't disclose

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
Computer Code ProgrammingComputer Code Programming
DocumentDocument
Geospatial Tiled ImageryGeospatial Tiled Imagery
ImageImage
Medical DicomMedical Dicom
TextText
VideoVideo

Top Label Types

Action Recognition
Audio Recording
Bounding Box
Classification
Computer Programming Coding
Data Collection
Emotion Recognition
Evaluation Rating
Fine Tuning
Mapping
Object Detection
Prompt Response Writing SFT
Segmentation
Text Generation
Text Summarization
Transcription
Translation Localization

Freelancer Overview

I am a detail-oriented AI and Data Annotation Specialist with hands-on experience delivering high-quality labeled datasets for AI and machine learning projects. My expertise includes annotating images, text, and video data for domains such as autonomous vehicles, computer vision, and NLP, consistently achieving over 96% annotation accuracy. I am skilled in using tools like Labelbox, CVAT, and Supervisely, and apply techniques such as bounding boxes, polygons, semantic segmentation, and object tracking. I excel at quality assurance, data preprocessing, and documentation, and thrive in cross-functional teams to meet strict deadlines and project requirements. My strong analytical skills, attention to detail, and commitment to data integrity enable me to contribute effectively to AI model training and performance improvement.

IntermediateEnglishSwahili

Labeling Experience

Sigma AI,Welocalize

OtherAudioData CollectionAudio Recording
Audio Trascription and Recording

Audio Trascription and Recording

2025 - 2025
Labelbox

Atlas Capture

LabelboxVideoEntity Ner ClassificationSegmentation
Atlas Capture used mainly as data-capture / recording tool. It records user actions, and the captured data is then labeled in separate annotation tools.

Atlas Capture used mainly as data-capture / recording tool. It records user actions, and the captured data is then labeled in separate annotation tools.

2025 - 2025

Remotasks

Don T DiscloseImagePolygon
Image data Annotaion

Image data Annotaion

2023 - 2023

Education

I

IBM Be Techified

AI Fudamentals , AI Fudamentals

AI Fudamentals
2025 - 2025
M

Moringa School

Certificate in Data Analytics, Data Analytics

Certificate in Data Analytics
2025 - 2025

Work History

A

Atlas Capture

AI Data Labelling

Nairobi
2025 - 2025
T

Telus International AI

AI & DATA ANNOTATION SPECIALIST

Nairobi
2025 - 2025