Esther Namakwa

Key Skills

Software

Other

Toloka

Top Subject Matter

Machine Learning/Artificial Intelligence

Data Labeling & Data Annotation

Data Analytics & Statistical Analysis

Top Data Types

Image

Text

Document

Top Label Types

Bounding Box

Classification

Freelancer Overview

I am a Statistics and Programming graduate with hands-on experience in data labeling, annotation, and AI training data workflows. My background includes annotating image, text, and video datasets for machine learning projects, ensuring high accuracy and consistency through rigorous quality checks and detailed documentation. I am proficient in tools such as SPSS, STATA, R, Excel, Power BI, Tableau, ODK, and Google Forms, and have successfully contributed to projects in revenue analytics, agricultural research, and large-scale census data collection. My strengths lie in data cleaning, validation, and interpretation, as well as in preparing clear, actionable reports and dashboards. I am committed to delivering reliable, unbiased datasets to support robust AI model development and evidence-based decision-making.

Labeling Experience

Data Labeler (AI Training Data) — Atlas Capture

OtherImageBounding Box

As an AI Data Labeler at Atlas Capture, I labeled and annotated image and video datasets for machine learning training. My work involved object tagging, categorization, and applying frame-level labeling with precision. I followed detailed project guidelines and performed quality checks to deliver accurate training data. • Consistently applied precise bounding boxes and object classifications. • Maintained annotation accuracy through meticulous quality review processes. • Ensured high-quality training datasets by following project standards. • Collaborated with global remote teams to meet project objectives.

As an AI Data Labeler at Atlas Capture, I labeled and annotated image and video datasets for machine learning training. My work involved object tagging, categorization, and applying frame-level labeling with precision. I followed detailed project guidelines and performed quality checks to deliver accurate training data. • Consistently applied precise bounding boxes and object classifications. • Maintained annotation accuracy through meticulous quality review processes. • Ensured high-quality training datasets by following project standards. • Collaborated with global remote teams to meet project objectives.

2025 - Present

Data Annotator — RWS

OtherImageClassification

As a Data Annotator at RWS, I handled large volumes of visual and multimedia data for AI model development. My duties included image classification, tagging, and strict adherence to annotation guidelines. I ensured consistency and accuracy in all delivered datasets. • Delivered validated, high-quality labeled data for machine learning pipelines. • Accurately classified images and multimedia content across complex projects. • Maintained productivity while meeting high annotation standards. • Supported AI model training by providing reliable annotations.

As a Data Annotator at RWS, I handled large volumes of visual and multimedia data for AI model development. My duties included image classification, tagging, and strict adherence to annotation guidelines. I ensured consistency and accuracy in all delivered datasets. • Delivered validated, high-quality labeled data for machine learning pipelines. • Accurately classified images and multimedia content across complex projects. • Maintained productivity while meeting high annotation standards. • Supported AI model training by providing reliable annotations.

2024 - 2025

Data Annotator (Freelance) — Toloka

TolokaImageClassification

As a freelance Data Annotator for Toloka, I completed diverse data labeling tasks across multiple AI projects. My responsibilities included content categorization, validation, and annotation for images, text, and structured data. I ensured project instructions were strictly followed for high-quality results. • Accurately categorized and annotated data for diverse machine learning tasks. • Validated datasets to meet client requirements and project specifications. • Managed multiple annotation tasks across different domains. • Delivered high-quality labeled datasets to support AI training.

As a freelance Data Annotator for Toloka, I completed diverse data labeling tasks across multiple AI projects. My responsibilities included content categorization, validation, and annotation for images, text, and structured data. I ensured project instructions were strictly followed for high-quality results. • Accurately categorized and annotated data for diverse machine learning tasks. • Validated datasets to meet client requirements and project specifications. • Managed multiple annotation tasks across different domains. • Delivered high-quality labeled datasets to support AI training.

2024 - 2024

Education

Work History