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Marília Costa

@marliacosta

AI data annotator and evaluator with freelance experience reviewing AI content and a YouTube channel that reached 580,000 subscribers.

Brazil

Message

What I'm looking for

I’m available for remote opportunities in AI Data Annotation, AI Evaluation, Data Operations, Content Quality, and related roles.

My freelance AI and data annotation work has involved evaluating content, assessing quality, and providing structured feedback. I review AI-generated material for accuracy, relevance, clarity, and adherence to task-specific guidelines.

I also managed and created content for a YouTube channel that reached 580,000 subscribers, working across planning, editing, publishing, and adapting material for different formats. I’m developing my data analysis skills in Excel, SQL, Python, and pandas.

Experience

Work history, roles, and key accomplishments

Freelance AI / Data Annotation & Evaluation

Self Employed

Engaged in AI-related freelance projects involving content evaluation, quality assessment, and structured feedback. Assessed AI-generated content for accuracy, relevance, quality, clarity, and adherence to requirements.

AI Tools AI Evaluation Data Annotation Content quality review Prompt Based Workflows Multilingual Portuguese English Spanish

Content Creator & Digital Media

Self Employed

Managed and created content for a YouTube channel that reached 580,000 subscribers, demonstrating long-term experience with digital platforms and online audiences. Worked with large volumes of digital content, including planning, reviewing, editing, publishing, and adapting material to different formats.

YouTube Instagram TikTok Facebook Content Planning Content Editing Content Publishing Audience Engagement

Education

Degrees, certifications, and relevant coursework

Data Analysis

Currently Studying, Data Analysis

Ongoing development of practical skills in Excel, SQL, Python and pandas, with a focus on data analysis, data interpretation and technical problem-solving.