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evelinsantos25

Evelin S

@evelinsantos25

AI Data Specialist, LLM Evaluator, Brazilian Portuguese AI

Brazil
Portuguese, English
About me
Need a native Brazilian Portuguese specialist for AI and LLM projects? I provide manual PT-BR data annotation, LLM evaluation, linguistic QA, and AI content review. I can help with: • LLM response evaluation • Data annotation and labeling • Brazilian Portuguese linguistic QA • Query intent and relevance analysis • Grammar, fluency, and naturalness review • Translation evaluation • Speech and audio quality assessment • Structured error feedback I have 3+ years of experience in AI data projects. Please contact me for large datasets or custom guidelines.... Read more

Skills

e
evelinsantos25
Evelin S
Offline • 

See my services

Translation
I will translate and localize english content into brazilian portuguese
From$10 / projectMore details
AI Technology Consulting
I will evaluate and annotate brazilian portuguese ai and llm data
From$10 / projectMore details

Work experience

Upwork

Medical Translator and LLM Evaluator

Upwork • Freelance

Apr 2026 - Present • 6 mos

Translate and localize medical and health economics content from English into Brazilian Portuguese, maintaining terminological accuracy and cultural appropriateness. Evaluate AI-generated medical translations and healthcare responses against quality rubrics, identifying factual inaccuracies and safety-critical errors. Create bilingual terminology glossaries and annotation guidelines.

Appen

Data Labeler

Appen • Freelance

Nov 2022 - Present • 3 yrs 11 mos

Label and evaluate complex datasets for AI model development, with a focus on query intent analysis and consistent application of project guidelines. Assess image and video content quality for TikTok-related projects by applying platform policies and documented evaluation criteria. Participate in weekly calibration sessions with QA teams to resolve annotation questions, improve decision consistency, and align work with updated guidelines.

Centific

Audio Transcriber

Centific • Freelance

Mar 2025 - Aug 2025 • 5 mos

Responsible for transcribing audio files according to specific client-defined accuracy and formatting standards. Ensured high-quality linguistic output for speech data processing projects.