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Thiago Da Costa MarquesTM
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Thiago Da Costa Marques

@thiagodacostamarques

Trust & Safety specialist focused on scaling safe, compliant AI through investigations and audits.

Ireland
Message

What I'm looking for

I'm looking for a Trust & Safety role that leverages my expertise in AI quality assurance and content moderation to drive meaningful impact. I want to contribute to building safe and trustworthy AI systems in a dynamic environment where I can continuously learn and grow, collaborating with cross-functional teams to stay ahead of emerging threats and enha


I am a Trust & Safety professional with three years' hands-on experience investigating abuse, enforcing content policy, and mitigating risk across large-scale AI ecosystems. I have led manual auditing processes, standardized workflows, and collaborated with Product, Policy, Legal, and Engineering to reduce policy-violating activity and improve operational efficiency.

I specialize in evaluating generative AI and LLM outputs, identifying emerging abuse patterns, and using data-driven analysis to inform process improvements. I am passionate about building scalable defenses, coaching teams on enforcement consistency, and supporting high-priority escalations to protect users and platform integrity.

Experience

Work history, roles, and key accomplishments

CO
Current

AI Quality Assurance Specialist

Covalen

Jul 2024 - Present (1 year 3 months)

Led manual audits and standardized workflows to reduce policy-violating activity across AI-driven platforms, improving operational efficiency and cross-functional alignment with Product, Policy, and Engineering teams.

CO

AI Data Annotator

Covalen

Jul 2023 - Jul 2024 (1 year)

Conducted detailed annotation and quality evaluation of LLM outputs to ensure safety compliance, identified emerging abuse patterns, and supported model performance analysis and process improvements.

Education

Degrees, certifications, and relevant coursework

Technological University Dublin logoTD

Technological University Dublin

Master of Science, Culinary Innovation and Food Product Development

Completed a Master of Science program focused on culinary innovation and food product development.

PU

Potiguar University

Degree in Gastronomy, Gastronomy

Completed a degree in Gastronomy emphasizing culinary techniques and food preparation.

Tech stack

Software and tools used professionally

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Thiago Da Costa Marques - AI Quality Assurance Specialist - Covalen | Himalayas