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Agustin Diaz LusarretaAL
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Agustin Diaz Lusarreta

@agustindiazlusarreta

I test AI agents and LLM outputs to uncover failures and improve model quality.

Argentina
Message

I've evaluated conversational AI agents in the confidential Lyra Project, testing complex multi-turn interactions and designing adversarial prompts to expose weaknesses, inconsistencies, and unexpected behavior.

I assess model outputs for factuality, reasoning, instruction following, contextual understanding, relevance, and quality. I create evaluation rubrics, identify recurring failure modes, rank alternative responses, and provide structured feedback for improvement.

My work also includes AI audio evaluation at CrowdGen and multilingual search quality evaluation at Welocalize/Welo Data. I bring a Quality Assurance background from McCain Foods, along with technical knowledge of full-stack development, web technologies, programming fundamentals, and data analysis.

Experience

Work history, roles, and key accomplishments

LP

AI Agent / LLM Evaluation Analyst

Lyra Project - Confidential AI Evaluation Project

Jan 2025 - Dec 2026 (1 year 11 months)

Tested and evaluated a conversational AI agent across complex multi-turn interactions, designing adversarial prompts to identify weaknesses and inconsistencies. Evaluated responses for factuality, reasoning, instruction following, and contextual understanding, and provided structured feedback for model improvement.

WD

Multilingual Search Quality Analyst / AI Evaluator

Welocalize / Welo Data

Jan 2025 - Dec 2026 (1 year 11 months)

Evaluated search results and AI-generated responses for relevance, factual accuracy, reasoning, instruction adherence, clarity, and usefulness. Created evaluation rubrics, designed challenging prompts, ranked alternative responses, and identified hallucinations and logical errors.

McCain Foods logoMF

QA Technician

McCain Foods

Jan 2020 - Dec 2023 (3 years 11 months)

Performed quality-control testing, sampling, data recording, and analysis under standardized procedures and specifications. Identified deviations, investigated quality issues, maintained documentation, and supported corrective actions.

Education

Degrees, certifications, and relevant coursework

AE

Agricultural Engineer

Agricultural Engineer, Agricultural Engineering

Completed an Agricultural Engineering degree in Argentina.

Tech stack

Software and tools used professionally

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