Software Engineer · AI/ML & Full-Stack · Open to Remote

I build production systems end-to-end — from backend APIs and AI-powered pipelines to full-stack applications and mobile apps. Currently finishing my Computer Engineering degree in Portugal and relocating to Hamburg, Germany in July 2026.

An LLM-powered chatbot for SIGP, an agricultural management platform. Full ownership from architecture to deployment.

• Stack: Python · FastAPI · LangChain · ChromaDB · Ollama · PostgreSQL · PHP bridge
• Built a production RAG + SQL Agent chatbot for an agricultural platform using FastAPI, LangChain, LangGraph, and ChromaDB with fully local LLMs (Ollama)
• Improved SQL query accuracy from 53% → 97% on a 100-question benchmark through systematic debugging, sample-pool and schema-aware retrieval over 239-table PostgreSQL metadata
• Achieved 3.2s median response time with no external API dependencies, and curated a 95-pair dataset for future fine-tuning

Intelligent parking management with computer vision and IoT hardware integration.

• Stack: Python · PyTorch · FastAPI · PostgreSQL · React · React Native · ESP32
• CV: Custom-trained CNN (ResNet) for real-time spot occupancy detection
• ALPR: Fast-ALPR for automatic license plate recognition at entry/exit gates
• IoT: ESP32 cameras integrated for gate automation, WebSocket real-time updates

AI-powered mock interview platform for companies, combining voice synthesis with dynamic conversational logic.

• Stack: TypeScript · Node.js · React · Supabase
• Voice: ElevenLabs API for realistic interviewer voice synthesis
• Features: Adaptive question flows, speech recognition (Whisper), candidate scoring, real-time feedback

Full platform (Web + Mobile + Backoffice) built for Softinsa, an IBM subsidiary.

• Stack: React · Node.js · Express · PostgreSQL · Flutter · JWT
• Features: Course management, quizzes, certificates, admin dashboards, file uploads
• Feedback from Softinsa: "I would buy it right now."

AI & ML · LangChain · RAG · ChromaDB · Ollama · PyTorch · OpenCV · Fast-ALPR · Whisper

Languages · Python · TypeScript · JavaScript · SQL · C/C++

Backend · FastAPI · Node.js · REST APIs · JWT

Frontend & Mobile · React · Flutter · HTML/CSS

Data · PostgreSQL · Supabase · MongoDB

Tools · Docker · Git · Postman · Figma

• 📍 Portugal → Hamburg, Germany (July 2026)
• 🎓 Computer Engineering @ ESTGV/IPV — graduating June 2026
• 💼 Open to full-time remote roles from July 2026
• 🇩🇪 Learning German (A1)

📧 alexandre@alexandrefernandes.dev 🔗 alexandrefernandes.dev · LinkedIn