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Marco Corsini

Marco Corsini

AI Trainer / Data Annotator

Italy flagModena, Italy
$15.00/hrIntermediateOneformaMercorData Annotation Tech

Key Skills

Software

OneFormaOneForma
MercorMercor
Data Annotation TechData Annotation Tech
MindriftMindrift
TolokaToloka
AppenAppen

Top Subject Matter

LLM Evaluation
Multilingual Annotation
Prompt Engineering

Top Data Types

AudioAudio
DocumentDocument
ImageImage
TextText
VideoVideo

Top Task Types

Audio RecordingAudio Recording
Object DetectionObject Detection
Question AnsweringQuestion Answering
TranscriptionTranscription
Translation/LocalizationTranslation/Localization
ClassificationClassification
Text GenerationText Generation
Text SummarizationText Summarization
Data CollectionData Collection
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

AI Trainer and Data Annotation Specialist with hands-on experience in LLM evaluation, prompt engineering, and multilingual data annotation. Skilled in evaluating AI-generated content, improving model performance, and working within high-volume, guideline-driven environments. Strong analytical thinking, attention to detail, and ability to deliver consistent, high-quality results in AI training workflows. LLM evaluation, prompt engineering, multilingual annotation, speech-to-text correction. Evaluated and rated 1000+ AI-generated responses based on quality, accuracy, coherence, and safety guidelines. Created and refined prompts to test model performance and improve response quality. Performed audio transcription correction to enhance speech recognition systems. Reviewed and annotated multilingual content (Italian, English, Spanish), ensuring linguistic and contextual accuracy. Worked independently on high-volume tasks, maintaining consistency under strict guidelines and deadlines

IntermediateItalianSpanishEnglish

Labeling Experience

Multilingual Translation Evaluation (EN–ES–IT)

VideoTranscription
Evaluated and rated AI-generated translations from audio and video content in English, Spanish, and Italian across diverse real-world datasets. Applied multi-dimensional quality criteria, including accuracy, fluency, cultural appropriateness, and context preservation. Detected critical issues such as mistranslations, loss of meaning, and inconsistencies across languages. Contributed to improving multilingual AI model performance through structured evaluation and feedback. Worked with diverse real-world content, demonstrating strong cross-lingual understanding and attention to detail.

Evaluated and rated AI-generated translations from audio and video content in English, Spanish, and Italian across diverse real-world datasets. Applied multi-dimensional quality criteria, including accuracy, fluency, cultural appropriateness, and context preservation. Detected critical issues such as mistranslations, loss of meaning, and inconsistencies across languages. Contributed to improving multilingual AI model performance through structured evaluation and feedback. Worked with diverse real-world content, demonstrating strong cross-lingual understanding and attention to detail.

2026 - 2026

Prompt Creation and AI Response Evaluation (Italian)

TextRLHF
Created a high volume of high-quality prompts in Italian to challenge and evaluate large language models (LLMs). Assessed AI responses using multi-dimensional criteria (accuracy, coherence, instruction-following, and overall quality). Detected and analyzed model weaknesses, including hallucinations, logical errors, and inconsistencies. Contributed to improving model performance through detailed evaluation and feedback. Worked independently in a fast-paced, guideline-driven environment with a strong focus on quality and consistency.

Created a high volume of high-quality prompts in Italian to challenge and evaluate large language models (LLMs). Assessed AI responses using multi-dimensional criteria (accuracy, coherence, instruction-following, and overall quality). Detected and analyzed model weaknesses, including hallucinations, logical errors, and inconsistencies. Contributed to improving model performance through detailed evaluation and feedback. Worked independently in a fast-paced, guideline-driven environment with a strong focus on quality and consistency.

2026 - 2026

Audio Transcription and Correction (Italian)

AudioTranscription
Corrected and refined large volumes of AI-generated transcriptions from Italian audio datasets to improve speech recognition accuracy. Applied linguistic judgment to accurately represent spoken language, including filler words, pauses, and informal speech patterns. Worked under strict quality guidelines, ensuring consistency across large volumes of annotated data. Contributed to the training and optimization of speech recognition and language models. Demonstrated strong attention to detail and ability to maintain accuracy in repetitive, deadline-driven workflows.

Corrected and refined large volumes of AI-generated transcriptions from Italian audio datasets to improve speech recognition accuracy. Applied linguistic judgment to accurately represent spoken language, including filler words, pauses, and informal speech patterns. Worked under strict quality guidelines, ensuring consistency across large volumes of annotated data. Contributed to the training and optimization of speech recognition and language models. Demonstrated strong attention to detail and ability to maintain accuracy in repetitive, deadline-driven workflows.

2025 - 2025

Education

U

University of Padua

110/110, Master’s Degree in Clinical-Dynamic Psychology

110/110
2020 - 2022
U

University of Padua

102/110, Bachelor’s Degree in Interpersonal Relations

102/110
2017 - 2020

Work History

No Work History added yet

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