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E
Esther N.

Esther N.

AI Data Annotator – Computer Vision & Multilingual Evaluation

Kenya flagNairobi, Kenya

Key Skills

Software

AppenAppen
CVATCVAT
Data Annotation TechData Annotation Tech
ClickworkerClickworker
CloudFactoryCloudFactory
iMeritiMerit
HastyHasty
LionbridgeLionbridge
Micro1
OneFormaOneForma
MindriftMindrift
SamaSama
SuperviselySupervisely
SuperAnnotateSuperAnnotate
V7 LabsV7 Labs
TelusTelus
TolokaToloka

Top Subject Matter

Autonomous Systems – 3D LiDAR & Point Cloud Annotation
Linguistics & Localization – English, Swahili, and Turkish
Content Safety – Toxicity Classification & Platform Moderation

Top Data Types

ImageImage
TextText
AudioAudio

Top Task Types

Bounding BoxBounding Box
SegmentationSegmentation
PolygonPolygon
Point/Key PointPoint/Key Point
CuboidCuboid
Object DetectionObject Detection
Text SummarizationText Summarization
RLHFRLHF
TranscriptionTranscription
Data CollectionData Collection

Freelancer Overview

I am a professional data annotator and evaluator with extensive experience in developing high-quality datasets for artificial intelligence training. My technical expertise includes 3D LiDAR point cloud annotation, semantic segmentation, and keypoint annotation, with a specific focus on complex workflows like 3D Cuboids and ATOM Points. I have a proven track record of maintaining high accuracy standards across diverse platforms, such as Hasty.ai and CloudFactory, where I have contributed to large-scale machine learning data preparation.

Labeling Experience

Specialist Data Annotator: Computer Vision & Semantic Segmentation

ImageImageBounding BoxBounding Box

Project Scope: This project involved high-precision data preparation for autonomous systems using the Hasty.ai platform. Specific Labeling Tasks: I performed complex 3D LiDAR point cloud annotation, utilizing 3D Cuboids to define object boundaries in spatial environments. Additionally, I executed semantic segmentation and keypoint annotation, specifically working with ATOM Points to ensure granular data accuracy. Project Size and Duration: I participated in large-scale annotation efforts, including a significant onboarding and training phase with CloudFactory that commenced in late April 2026. Quality Measures: Adherence to strict platform guidelines was paramount, particularly in identifying and classifying content toxicity and maintaining precise mask size levels for semantic data.

2022 - 2025

Education

M

Mount Kenya University

Degree , Information Technology

Degree
2014 - 2018

Work History

S

Samasource

Quality Analyst

Nairobi
2020 - 2026