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Michał K.

Michał K.

Freelance Language Specialist & Data Quality Analyst (Linguistic Quality Assurance & validation)

Poland flagN/A, Poland

Key Skills

Software

Label StudioLabel Studio
LabelImgLabelImg
CVATCVAT

Top Subject Matter

Linguistic quality assurance and dataset validation for AI training (Polish/English)
Image annotation and dataset curation for AI training
Audio/video transcription and transcription validation for AI training plus content localization quality

Top Data Types

TextText
ImageImage
AudioAudio
DocumentDocument

Top Task Types

Bounding BoxBounding Box
TranscriptionTranscription
RLHFRLHF
Evaluation/RatingEvaluation/Rating
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Text GenerationText Generation
Text SummarizationText Summarization

Freelancer Overview

I am a business psychologist and bilingual language specialist working as an AI Trainer and Data Quality Analyst. My hands-on experience focuses heavily on high-precision training data curation, including Linguistic Quality Assurance (QA), Inverse Text Normalization (ITN), and precision audio transcription. I am also experienced in computer vision tasks, specifically multimodal data labeling and image annotation using Bounding Boxes (BBox). Because of my background in regional sales management, I approach large-scale dataset validation with a strict focus on quality KPIs, process optimization, and efficiency. My unique combination of linguistic expertise and analytical workflow management allows me to deliver clean, high-quality training data for LLMs and advanced AI models.

Labeling Experience

Freelance Language Specialist & Data Quality Analyst (Linguistic QA & Validation)

TextTextEvaluation/RatingEvaluation/Rating

Conducted high-precision validation and Linguistic Quality Assurance (QA) of text datasets. Specialized in Inverse Text Normalization (ITN) to prepare raw data for AI training models. Localized high-stakes business and e-commerce content between English and Polish, ensuring cross-market consistency and cultural resonance.

2020 - Present

Freelance Language Specialist & Data Quality Analyst (Transcription & transcription quality)

Don't discloseAudioAudioTranscriptionTranscription

Performed high-precision audio and video transcriptions and validations for Polish and English datasets. Focused heavily on linguistic nuances, industry-specific terminology, and strict guideline compliance. Reviewed transcription workflows to eliminate errors and maintain high data quality for machine learning models.

2020 - Present

Freelance Language Specialist & Data Quality Analyst (Image data annotation)

Don't discloseImageImageBounding BoxBounding Box

Performed complicated imaging annotation and data labelling tasks using BBoxes. Cut the data curation pipeline under strict Quality KPIs pertaining to project and deadlines. Diligently exposed details throughout the capture of size of large visual datasets to support computer vision models.

2020 - Present

Education

W

WSB University in Chorzów

Polish Bachelor of Arts (B.A.), Psychology

Polish Bachelor of Arts (B.A.)
2019 - 2023
W

WSB University in Chorzów

Bachelor of Arts, Business English

Bachelor of Arts
2025

Work History

O

Own Business

Freelance Language Specialist & Data Quality Analyst

N/A
2020 - Present
Ż

Żabka Polska

Area Sales Manager

N/A
2024 - 2025