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leobarca383

Leonardo Barca

@leobarca383

AI and Machine Learning Engineer

Brazil
English, Portuguese, Spanish
About me
AI & Machine Learning Engineer building production AI end-to-end: GenAI, RAG, AI agents, Python APIs, data pipelines, automation and applied Machine Learning. I work across architecture, integration, deployment and optimization, with strong AWS, Terraform and CI/CD experience, plus practical Microsoft Azure projects. My background includes enterprise and healthcare AI, OCR, fraud detection and biomedical signal Machine Learning. Available for focused technical tasks and complete implementations, 20-30 hours per week.... Read more

Skills

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leobarca383
Leonardo Barca
Offline • 

See my services

Help/Consultation
I will debug or improve your python ai or llm application
From$150 / projectMore details
AI Technology Consulting
I will diagnose and improve your rag or ai agent system
From$200 / projectMore details

Portfolio

Work experience

Xtory

Senior Data Scientist

Xtory • Full-time

Feb 2026 - Present • 9 mos

● Designed and developed an AI-powered healthcare platform for medical appointment scheduling and electronic health record management, supporting an integrated patient and healthcare professional experience. ● Gen AI workflows to automate interactions, retrieve information, and provide assistance within the platform. ● Integrated with WhatsApp, automated communication, and conversational user interactions. ● Developed OCR capabilities to process and analyze healthcare-related documents. ● Implemented AI features to support healthcare professionals with informatio, workflows, and insights. ● ETL pipelines, web scraping workflows, and data extraction systems to collect, standardize, and enrich information about physicians and healthcare providers. ● Applied Machine Learning and Generative AI techniques to the collected data, generating insights and improving data quality, classification, and information discovery. ● Contributed to the architecture and production integration of end-to-end AI and data solutions, covering data ingestion, processing, model integration, APIs, and application workflows.

Apllos_Solutions

Senior Data Scientist

Apllos Solutions • Full-time

Dec 2025 - Present • 11 mos

● Led the design and implementation of end-to-end Generative AI Agents for internal and client-facing chatbots, defining scalable RAG architectures to reason over structured and unstructured enterprise data. ● Owned the design and optimization of LLM pipelines, improving response relevance, reducing latency, and implementing strategies to mitigate hallucinations in production environments. ● Data modeling to handle inconsistent, incomplete, and low-quality data sources across multiple clients. ● Led architectural decisions for GenAI infrastructure on AWS, balancing performance, scalability, and cost efficiency across projects. ● Established reusable infrastructure standards using Terraform, enabling consistent and faster AI deployments

CloudDog

Data Scientist / Developer Intern

CloudDog • Full-time

Jan 2024 - Aug 2025 • 1 yr 7 mos

Data Scientist: January-August 2025. Developer Intern: January-December 2024. Contributed to Data Science, Machine Learning, Data Engineering, Generative AI and cloud development projects. Built data ingestion, ETL and web scraping workflows, developed fraud detection models, and supported integration and deployment of data and AI solutions. Contributed to technical proofs of concept, solution architecture and team mentoring.