Frederico Caixeta

AI & Machine Learning Engineer

About Me

I am a software engineer specializing in Artificial Intelligence and Machine Learning, dedicated to building safer and more inclusive technology. My career covers the development of deepfake detection solutions, prompt-injection defense systems, AI models for audio deepfake detection, and fact-checking agents fighting misinformation. I am also passionate about accessibility, with experience building sign language (Libras) translation programs to make technology more inclusive for the deaf and hard-of-hearing communities.

My main focus areas include:

  • LLM safety guardrails
  • GraphRAG AI Agents
  • Fraud Detection
  • Intelligent vector search solutions with Weaviate

Projects

Fake News Agent Detector

Identifying Deepfake Content

Work Experiences

Data Scientist at Act Digital (June 2025 – Present)

- Developer of AI-driven products involving MCP / Agents / A2A protocol, with hands-on experience in GraphRAG, traditional RAG systems, and Weaviate for vector storage.

  • Vector Searching with Embeddings
  • AI Agents / A2A Protocol / MCP
  • Fraud Detection

Founder at Authenti.co (June 2024 – Present)

- Main focus on sign language translation using AI / Machine Learning

- ML Models to detect synthetic / deepfake content

  • Sign Language Translation
  • Fake News and Deepfake Content Detection
  • Machine Learning / AI

Product Development Analyst at IAV (June 2023 – June 2025)

- AI-driven automotive scenarios generation based on natural language input, converting user requests (e.g., 'a car at 50 kph and another at 100 kph') into dynamic, data-driven simulations.

- AI-Chatbot with RAG to support Onboarding of new team members by providing instant access to relevant documentation.

- Machine Learning implementation to optimize project performance and enhance overall test-environment efficiency with anomalies detection.

  • AI Generated Scenarios
  • Forecasting of Failure in Testing