Polina Raidenko - AI Data Annotation Specialist

Q: Where is Polina based?

Polina is based in Košice, Slovakia and prefers 100% remote projects.

Q: What languages does Polina speak?

Polina speaks the following languages: Slovak (Native), Ukrainian (Native), Czech (Advanced), English (Advanced), Polish (Intermediate), German (Elementary) .

Q: How many years of experience does Polina have?

Polina has at least 1 year of experience. During this time, Polina has worked in at least 4 different roles and for 4 different companies . The average length of individual experience is 4 months . Note that Polina may not have shared all experience and actually has more experience.

Q: What is Polina's latest experience?

Polina's most recent position is AI Data Annotation Specialist at Mindrift .

Q: What companies has Polina worked for in recent years?

In recent years, Polina has worked for Mindrift , Invisible Technologies , Upwork , and TELUS International .

Q: Which industries is Polina most experienced in?

Polina is most experienced in industries like Information Technology (IT) and Professional Services .

Q: Which business areas is Polina most experienced in?

Polina is most experienced in business areas like Information Technology (IT) , Quality Assurance (QA) , and Research and Development (R&D) . Polina also has some experience in Product Development .

Q: What is Polina's education?

Polina holds a Master from Technical University of Kosice .

Q: Does Polina have any certificates?

Polina has 1 certificate : English Certificate C1 - International English Test .

Recommended expert

Košice, Slovakia

Experience

Oct 2025 - Nov 2025

2 months

Košice, Slovakia

AI Data Annotation Specialist

Mindrift

Annotating and mapping options values for AI models
Ensuring that the correct mapping was applied to the data based on predefined criteria
Reviewing and verifying annotations for consistency and accuracy
Working with a team to ensure high-quality data annotations
Providing feedback and suggestions to improve the annotation process
Validating the quality of the data used for training AI systems

Aug 2025 - Nov 2025

4 months

Košice, Slovakia

AI Trainer

Invisible Technologies

Jun 2025 - Present

9 months

Freelancer - AI Data Annotation & Verification Specialist / AI Data Specialist - Slovak Audio Transcription and Annotation

Upwork

Recorded and transcribed Slovak audio for AI training
Annotated and labeled text, images, and videos
Verified AI responses for factual accuracy and relevance

Dec 2024 - Present

1 year 3 months

Košice, Slovakia

Personalized Internet Assessor

TELUS International

Evaluated and rated online content to improve search engine relevance
Improved AI recommendations by assessing user intent and content relevance
Ensured high-quality results through consistent application of linguistic criteria
Annotated and reviewed text and voice data for AI training
Analyzed grammar, tone, clarity, and factual correctness of large language model responses

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (1 year) and Professional Services (0.5 years).

Information Technology

Professional Services

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Information Technology (1 year), Quality Assurance (1 year), Product Development (0.5 years), and Research and Development (0.5 years).

Information Technology

Quality Assurance

Product Development

Research and Development

Summary

I am a highly motivated and detail-oriented professional with a strong background in Al data annotation, verification, and transcription. I specialize in improving Al-generated content, ensuring its accuracy, and performing quality checks. With hands-on experience in transcription, data annotation, and content evaluation, I bring a strong skill set in enhancing machine learning models

Skills

Gmail
Al Data Annotation
Verification
Data Labeling
Audio Transcription
Factual Accuracy Verification
Content Quality Assurance
Checking If The Al's Answer Correctly Responds To The User's Query
Verifying Factual Accuracy Using Reliable Sources
Checking The Freshness And Relevance Of Information
Identifying Errors, Inconsistencies, Or Missing Details
Providing Evidence To Support Corrections
Evaluating Clarity, Correctness, And Completeness Of The Response
Rating The Overall Quality And Suggesting Improvements
Data Mapping For Al Models
Text, Image, And Video Annotation
Machine Learning Support
Al Response Evaluation
Content Freshness And Relevance Checks
Data Consistency And Accuracy Verification
Quality Control And Process Improvement
Precision In Data Processing

Languages

Slovak

Native

Ukrainian

Native

Czech

Advanced

English

Advanced

Polish

Intermediate

...and 1 more

Education

Sep 2019 - May 2024

Technical University of Kosice

Master's Degree · Košice, Slovakia

Sep 2008 - May 2019

Konotop Specialized School

High School Diploma · Konotop, Ukraine

Certifications & licenses

English Certificate C1 - International English Test

Profile

Created

December 2025

Last Update

January 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Polina based?

Polina is based in Košice, Slovakia and prefers 100% remote projects.

What languages does Polina speak?

Polina speaks the following languages: Slovak (Native), Ukrainian (Native), Czech (Advanced), English (Advanced), Polish (Intermediate), German (Elementary).

How many years of experience does Polina have?

Polina has at least 1 year of experience. During this time, Polina has worked in at least 4 different roles and for 4 different companies. The average length of individual experience is 4 months. Note that Polina may not have shared all experience and actually has more experience.

What roles would Polina be best suited for?

Based on recent experience, Polina would be well-suited for roles such as: AI Data Annotation Specialist, AI Trainer, Freelancer - AI Data Annotation & Verification Specialist / AI Data Specialist - Slovak Audio Transcription and Annotation.

What is Polina's latest experience?

Polina's most recent position is AI Data Annotation Specialist at Mindrift.

What companies has Polina worked for in recent years?

In recent years, Polina has worked for Mindrift, Invisible Technologies, Upwork, and TELUS International.

Which industries is Polina most experienced in?

Polina is most experienced in industries like Information Technology (IT) and Professional Services.

Which business areas is Polina most experienced in?

Polina is most experienced in business areas like Information Technology (IT), Quality Assurance (QA), and Research and Development (R&D). Polina also has some experience in Product Development.

What is Polina's education?

Polina holds a Master from Technical University of Kosice.

Does Polina have any certificates?

Polina has 1 certificate: English Certificate C1 - International English Test.

What is the availability of Polina?

Polina is immediately available full-time for suitable projects.

What is the rate of Polina?

Polina's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.