Hi, I'm Sebastian

Full-stack inventory system with role-based access control (ADMIN/USER), product and supplier management, client-side form validation, and a Docker Compose setup.

Smart white cane system for visually impaired users. Arduino + ESP8266 hardware streams GPS and ultrasonic sensor data to a Spring Boot backend with a live caregiver map.

Containerised full-stack app with React, Spring Boot, PostgreSQL and Nginx reverse proxy. Supports cloud deployment on Azure with automated SSL via Certbot.

FastAPI pipeline that processes meeting transcripts to extract topics, decisions, action items, and per-attendee sentiment — with optional OpenAI LLM integration.

Dimensional data warehouse built with Apache Spark and Neo4j, featuring incremental loads, weather data integration, and a star-schema fact/dimension architecture.

Kotlin + Spring Boot REST API for restaurant guest and review management. Uses JPA one-to-many relationships with PostgreSQL and H2 profile-based configuration.

Spring Boot app managing e-bike customer records, technician test scheduling, and result reporting. Multi-environment setup with Docker Compose and Spring Profiles.

Collection of Arduino sketches including a Morse Trainer, Lunar Lander simulation, Nim Game, and a custom distance-sensor final project with reusable libraries.