AI Systems & Web ApplicationsBuilt for Real Business Needs
I build practical AI systems, modern web applications and provide structured mentoring for Informatics certification projects.
About Me
I'm an AI Engineer and Full-Stack Developer focused on building practical AI systems, modern web applications and scalable software solutions. Alongside my work as a Data Engineer, I build products that combine AI, backend engineering and intuitive user experiences to solve real business problems.
Tech Stack
Expertise
Core Services
Practical solutions for businesses, startups and students.
AI Solutions
Practical AI workflow automation systems that help businesses work faster and smarter.
Web Applications
Custom web applications and scalable SaaS platforms built for real business use.
Informatics Mentoring
Personalized Informatics mentoring in Romania for students building their Atestat Informatica project.
Selected Work
View all projects ->Medical RAG Chatbot
RAG-based medical support assistant for querying uploaded documents, retrieving grounded answers and storing validated solutions. The system compares plain LLM, RAG and validated-memory responses using FastAPI, ChromaDB, SQLite, Streamlit and local LLM support.
FitnessTrack
Personal nutrition tracker for meal logging, private food products, weight tracking and dashboard analytics. It includes a Romanian-first meal assistant that prepares realistic meal suggestions from saved foods, using deterministic macro matching instead of invented nutrition values.
Serele Ștefanache
Presentation website for a family flower greenhouse business, designed to showcase products and build trust with local customers. Creates a clean online presence for a local business and makes flower offerings easier to discover.
Choose the service that fits your next step.
AI systems, web applications and Informatics mentoring, built with clarity and practical execution.
Discuss Your Project- AI Solutions for automation and decision support
- Web Applications for products and internal tools
- Informatics Mentoring for certification preparation
Social proof
Trusted by Students, Startups and Teams
Alex Popa
Startup Founder
Early-stage HealthTech Startup
"Rafael took our rough AI idea and helped us turn it into something we could actually test with users. He was fast, clear, and honest about what mattered."
Irina Matei
Product Manager
Client Project Collaboration
"What I appreciated most was how calmly he handled the messy parts. He understood the product goal, explained options clearly, and delivered clean work."
Andrei Marinescu
Informatics Student
Atestat Informatica Mentoring
"The sessions were practical and easy to follow. I stopped just copying code and finally understood what my project was doing."
Let's Discuss Your Project
A focused consultation call for startups, businesses and students looking for guidance on AI systems, web applications or Informatics mentoring.
- AI systems & automation
- Web application planning
- SaaS & API architecture
- Informatics mentoring
Clear technical direction for your next step.