Meta
Data Quality Analyst
Evaluating large scale multimodal English and Portuguese AI datasets, identifying quality issues, documenting standards, and supporting process improvement across teams.
Full stack developer · AI quality · cybersecurity
I build useful software, evaluate AI, and think in systems.
I am Christian Carvalho, a full stack developer and AI quality specialist with a cybersecurity background. I make products, test assumptions, and care about how systems behave in the real world.
Pinole, California · Working across English and Portuguese
Current roleData Quality Analyst at MetaExperience
Building judgment in systems where quality matters.
My professional path combines large scale AI data operations, multilingual quality, content policy, and independent software product development.
xAI
Linguistic Data Specialist and AI Bilingual Tutor
Curated and evaluated Portuguese and English speech and text data, providing linguistic QA across syntax, semantics, pragmatics, and dialectal variation.
Content Analyst, Trust and Safety
Reviewed YouTube advertising appeals in English and Portuguese, applying content policy consistently and contributing structured decisions to moderation data pipelines.
Selected work
Products built with purpose, curiosity, and craft.
Three independent projects connecting thoughtful interfaces, practical AI, and clear human use cases.
What I bring
One perspective across product, intelligence, and trust.
My work sits where reliable software, human judgment, and emerging AI meet. That range helps me see both the product opportunity and the edge cases around it.
Product engineering
Designing and delivering responsive web and mobile products from architecture through release, with clean interfaces and maintainable systems.
TypeScriptReactNext.jsReact NativeNode.jsPostgreSQL
AI quality and evaluation
Evaluating multilingual and multimodal AI data for accuracy, consistency, policy alignment, and real world usefulness.
Model evaluationLinguistic QAData qualityPrompt engineeringTrust and Safety
Secure systems thinking
Applying cybersecurity fundamentals, careful threat boundaries, and evidence based validation from cloud applications to embedded devices.
Security fundamentalsLinuxAPI designPlatformIOSystems validation
About
A builder who cares about how things work and why they matter.
I am a bilingual full stack developer and cybersecurity professional based in the San Francisco Bay Area. My work moves between product development, AI data quality, and hands on technical experimentation.
I enjoy taking on difficult, unfamiliar problems, breaking them into testable parts, and turning the result into something people can understand and use. Tennis, physics, security, and open AI systems are recurring sources of curiosity in my work.
Based inPinole, California
EducationB.Sc. Information Security
LanguagesPortuguese, English, Spanish
Current roleData Quality Analyst at Meta
Working principles
- Plan with clarity
- Build with evidence
- Design for people
- Secure the boundaries
Start a conversation
Have a meaningful problem to solve? I would like to hear about it.
I am interested in thoughtful product, AI quality, software engineering, and cybersecurity conversations.