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Alba Hernández

@albahernandez

Bilingual Spanish - English. AI Content Evaluator and Language Specialist focused on RLHF and LLMs

Spain
Message

What I'm looking for

I’m looking for remote, mission-driven AI work where I can evaluate and improve LLM responses with RLHF, precise linguistic analysis, and rigorous fact-checking—supporting helpful, honest, harmless outputs.

I am a student of English philology in Extremadura, Spain.

I have experience tutoring children and teenagers in several subjects (but especially English) and as a freelance writer.

Regarding my experience with artificial intelligence, I’m an AI Content Evaluator and Language Specialist who blends human-in-the-loop training with deep linguistic expertise. I currently focus on improving Large Language Model (LLM) outputs so they are helpful, honest, and harmless.

In my recent freelance work, I used RLHF techniques to train and refine LLM responses. I combine prompt engineering with multi-turn conversation testing to assess reasoning quality and instruction-following, then I deliver detailed rationales to support model improvement.

I’m also highly focused on verification and quality assurance. I perform fact-checking of AI-generated content against reliable sources, ensuring accuracy, and I apply content moderation and guideline compliance to keep outputs aligned with project standards.

Alongside evaluation work, I contribute to language-focused research by assessing linguistic accuracy and cultural relevance for the Spanish market. I bring a careful, detail-oriented approach to syntax, semantics, and grammar across English and Spanish, paired with strong self-motivation and time management.

In addition, I also trained as an administrative assistant, so I am able to perform the tasks of the position such as keeping personal schedules of tasks and meetings, making invoices and delivery notes, buying and selling transactions, etc.

Experience

Work history, roles, and key accomplishments

IC
Current

AI Data Specialist

Independent Contractor

Sep 2025 - Present (9 months)

Utilized RLHF to train and refine LLMs, validating responses for helpfulness, honesty, and harmlessness through prompt engineering and multi-turn conversation testing. Performed fact-checking against reliable sources and authored detailed rationales to improve model quality and guideline compliance.

Education

Degrees, certifications, and relevant coursework

University of Extremadura logoUE

University of Extremadura

Bachelor’s Degree, English Philology (Grado en Estudios Ingleses)

2024 -

Currently pursuing a Bachelor's degree in English Philology at the University of Extremadura (Cáceres Campus), focusing on advanced English linguistics, literature, and grammar.

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