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Alejandro Navarro

Alejandro Navarro

Medicine Doctor. LLM Evaluator and AI Data Quality Specialist

Chile flagSantiago, Chile
$16.00/hrIntermediateScale AIMicro1Mercor

Key Skills

Software

Scale AIScale AI
Micro1
MercorMercor

Top Subject Matter

General/Linguistic and Medical
Reinforcement Learning from Human Feedback
AI training

Top Data Types

TextText
DocumentDocument
VideoVideo

Top Task Types

RLHFRLHF
Fine-tuningFine-tuning
Evaluation/RatingEvaluation/Rating
Object DetectionObject Detection

Freelancer Overview

LLM Evaluator and AI Data Quality Specialist. Brings 16+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Diploma in Aesthetic Medicine, Canadian Board of Aesthetic Medicine (2024) and Certificate in Teaching English as a Foreign Language, Premier TEFL English (2018). AI-training focus includes data types such as Text and labeling workflows including Evaluation and Rating.

IntermediateEnglishSpanishFrench

Labeling Experience

LLM Evaluator and AI Data Quality Specialist

ImageRLHF
I evaluated large language models (LLMs) for accuracy, coherence, and compliance with provided guidelines. My work entailed the use of reinforcement learning from human feedback (RLHF) methodologies with a focus on linguistic quality and prompt engineering. This included granular evaluation of syntactic and semantic outputs for medical and general contexts. • Ensured grammatical and factual accuracy across diverse language tasks. • Reviewed AI-generated responses for logical coherence and guideline adherence. • Leveraged advanced knowledge in biochemistry and medical sciences for domain-specific fact-checking. • Utilized RLHF methods and evaluated LLM output quality on a proprietary virtual platform.

I evaluated large language models (LLMs) for accuracy, coherence, and compliance with provided guidelines. My work entailed the use of reinforcement learning from human feedback (RLHF) methodologies with a focus on linguistic quality and prompt engineering. This included granular evaluation of syntactic and semantic outputs for medical and general contexts. • Ensured grammatical and factual accuracy across diverse language tasks. • Reviewed AI-generated responses for logical coherence and guideline adherence. • Leveraged advanced knowledge in biochemistry and medical sciences for domain-specific fact-checking. • Utilized RLHF methods and evaluated LLM output quality on a proprietary virtual platform.

2025 - Present

Education

C

Canadian Board of Aesthetic Medicine

Diploma in Aesthetic Medicine, Aesthetic Medicine

Diploma in Aesthetic Medicine
2024 - 2024
P

Premier TEFL English

Certificate in Teaching English as a Foreign Language, Teaching English as a Foreign Language

Certificate in Teaching English as a Foreign Language
2018 - 2018

Work History

L

La Granja

Emergency Medicine Physician

Santiago
2026 - Present
L

Los Coihues Clinic

Internal Medicine Resident

Santiago
2025 - 2025