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Tallysnara A. — Mid-Level AI Evaluation Specialist from Brazil

Tallysnara A.

Mid-Level AI Evaluation Specialist

Brazil 2-3 years
Open to offersNew to Platform
Languages
EnglishPortuguese
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About

Tallysnara A. is a proficient AI Evaluation Specialist and Data Quality Analyst based in Cristalina, Goiás, Brazil, with a demonstrated history of expertise in fine-tuning Large Language Models (LLMs) and dataset auditing. Her experience includes evaluating over 15,000 AI-generated outputs, maintaining a 98.5% accuracy rate in Quality Assurance across complex RLHF benchmarking projects for Appen. She excels in detecting and mitigating model hallucinations, reducing error rates and policy violations by 25% through advanced prompt evaluation and red-teaming protocols. Tallysnara has a robust background in multimodal content evaluation, including image/video annotation and speech synthesis. Her governance and quality management skills include ensuring LGPD/GDPR compliance and enhancing data integrity. Tallysnara also has a legal background with a Bachelor of Laws degree and has engaged in professional training with Google in artificial intelligence.

Experience

  • Customer Operations & Data Specialist (Atendente III)

    EQUATORIAL ENERGIA · 2025 — 2025
    Managed and audited over 500 customer records weekly within corporate databases, maintaining a 99% accuracy rate in data verification alongside strict adherence to LGPD guidelines. Handled complex customer grievances and system discrepancies, thereby enhancing operational response efficiency.
  • AI Specialist & Content Compliance Analyst

    APPEN · 2024 — Present
    Evaluated more than 15,000 AI-generated outputs, achieving a Quality Assurance (QA) accuracy rate of 98.5% on RLHF benchmarking projects. Implemented advanced Prompt Evaluation and Red-Teaming to address systemic LLM hallucinations, leading to a reduction in model error rates and policy violations. Conducted audits on multimodal datasets, pinpointing anomalies in audio-visual elements to improve model alignment. Facilitated digital content moderation, ensuring compliance with community guidelines. Collaborated with AI data teams to optimize annotation guidelines, boosting team throughput through standardized feedback.
  • Administrative & Compliance Assistant

    MUNICIPAL PREFEITURA DE CRISTALINA · 2022 — 2024
    Performed audits of administrative databases and contract workflows across various public departments, successfully minimizing documentation compliance errors.
  • Office Assistant

    OBRAS SOCIAIS IRMÃO AUREO · 2018 — 2019
    Handled internal document management and data entry processes without any compliance infractions.

Skills & Expertise

Education

  • Bachelor of Laws
    FACULDADE SOBRESP · 2017 — 2022