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Valentin Roca

Valentin Roca

AI Data Evaluator - Technology & Internet

ROMANIA flag
Sfantu Gheorghe, Romania
$15.00/hrExpertTelus

Key Skills

Software

TelusTelus

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
ImageImage
TextText
VideoVideo

Top Label Types

RLHF
Segmentation
Text Summarization
Transcription

Freelancer Overview

I am an experienced AI data annotation specialist with over 20 years of expertise in high-precision documentation, structured decision-making, and both linguistic and visual analysis. My work includes evaluating AI-generated text and images, performing detailed pairwise comparisons, and ensuring strict adherence to guidelines for quality and consistency. I am skilled in annotating and classifying complex visual and textual data, identifying inconsistencies, and delivering reproducible results in both Romanian and English. With a strong background in technical writing, error analysis, and remote work discipline, I am fully available for remote AI training, data labeling, and evaluation projects, and am comfortable using Microsoft Office and beginner-level Python for task management and documentation.

ExpertEnglishRomanian

Labeling Experience

Telus

AI Data Annotation Specialist

TelusTextRLHF
As an AI Data Annotation Specialist at Telus International, I performed RLHF-style pairwise comparisons, ranking tasks, and text annotation. My main responsibilities included evaluating AI-generated text for reasoning quality, coherence, factual accuracy, safety compliance, and guideline adherence. I consistently delivered reproducible judgments on complex evaluation tasks. • Conducted semantic, intent, and error classification annotation for Romanian and English datasets. • Utilized annotation and evaluation platforms specialized for pairwise ranking, multi-criteria scoring, and guideline assessment. • Assessed logical structure, contradiction, prompt adherence, and safety of model outputs. • Worked remotely and maintained high standards in reproducibility and analysis quality. • Video content annotation (scene classification, action identification, visual consistency checks) • Audio transcription review (accuracy, timing alignment, segmentation, clarity) • OCR and image labeling

As an AI Data Annotation Specialist at Telus International, I performed RLHF-style pairwise comparisons, ranking tasks, and text annotation. My main responsibilities included evaluating AI-generated text for reasoning quality, coherence, factual accuracy, safety compliance, and guideline adherence. I consistently delivered reproducible judgments on complex evaluation tasks. • Conducted semantic, intent, and error classification annotation for Romanian and English datasets. • Utilized annotation and evaluation platforms specialized for pairwise ranking, multi-criteria scoring, and guideline assessment. • Assessed logical structure, contradiction, prompt adherence, and safety of model outputs. • Worked remotely and maintained high standards in reproducibility and analysis quality. • Video content annotation (scene classification, action identification, visual consistency checks) • Audio transcription review (accuracy, timing alignment, segmentation, clarity) • OCR and image labeling

2023

Education

L

Lucian Blaga University of Sibiu — Faculty of Law

Bachelor of Laws, Law

Bachelor of Laws
2002 - 2007

Work History

I

I.P.J. Covasna

Police Officer

Sfântu Gheorghe
2001 - 2020
I

IJJ Covasna

Gendarmerie Officer

Sfântu Gheorghe
2000 - 2001