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Katerina Mamontova

Katerina Mamontova

Master of data annotation—making AI smarter one label at a time

USA flag
Chandler, Usa
$14.00/hrIntermediateAws SagemakerAppenClickworker

Key Skills

Software

AWS SageMakerAWS SageMaker
AppenAppen
ClickworkerClickworker
CloudFactoryCloudFactory
CrowdSourceCrowdSource
Data Annotation TechData Annotation Tech
LabelboxLabelbox
MindriftMindrift
OneFormaOneForma
RemotasksRemotasks
TolokaToloka
TelusTelus
Scale AIScale AI

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
TextText
VideoVideo

Top Label Types

Bounding Box
Classification
Emotion Recognition
Evaluation Rating
Prompt Response Writing SFT

Freelancer Overview

I’ve worked across multiple major platforms including Labelbox, OneForma, Clickworker, and Appen, contributing to a wide range of AI training projects that sharpen how machines see, read, and respond. From writing and rating prompt responses to reviewing webpages for user intent and usefulness, I bring sharp attention to detail and a no-nonsense approach to data quality. Whether it’s content evaluation, annotation, or ranking outputs, I understand how to align results with real-world human expectations. What sets me apart? I don’t just follow the guidelines—I get them. I know what a good output looks like and how to spot noise a mile away. My background in education and customer service gives me an edge most labelers don’t bring to the table. I understand how people think, what they need, and how to spot patterns in both language and behavior. With years of real-world experience solving problems, managing expectations, and delivering consistent results, I bring a sharp, human-first perspective to every project. Whether it’s analyzing tone, refining user experience, or crafting responses that feel natural—I’m your go-to. Fast, focused, and ridiculously dependable.

IntermediateRussian

Labeling Experience

No Data Labeling experience added

Katerina M. hasn’t added any AI Training or Data Labeling experience to their OpenTrain profile yet.

Education

No Education added yet

Katerina M. hasn’t added any Education History to their OpenTrain profile yet.

Work History

No Work History added yet

Katerina M. hasn’t added any Work History to their OpenTrain profile yet.