Rafael San Vidal :: Software Developer

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║              Software Developer | AI-Powered Coding          ║
║                  25+ Years of Experience                     ║
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rafaelsanvidal@portfolio:~$ whoami

Rafael San Vidal

Software Developer | AI-Powered Coding

25+ Years of Experience

rafaelsanvidal@portfolio:~$ _

$ cat about.txt

# About Me

My journey in software development started with the first 8-bit personal computers at age 13.

From writing my first BASIC programs to now leveraging cutting-edge AI tools,

I've been passionate about technology for over 25 years.

# Current Focus (2025)

→ Building enterprise applications with .NET 9 and Java 21

→ Embracing AI-assisted development with Cursor, Claude Code and Gemini CLI

→ Creating cross-platform solutions

→ Implementing Clean Architecture and DDD patterns

✓ 25+ years of professional experience

✓ Healthcare domain expert (BD Company since 2005)

✓ Full-stack developer (.NET, Java, Spring Boot, Angular, React)

✓ AI-powered workflow enthusiast

$ cat experience.log | tail -n 20

# Professional Experience

Becton Dickinson and Company 2005 - Present

Senior Software Developer | Healthcare Solutions

## Key Responsibilities

→ Full-stack development of healthcare applications (EMEA region)

→ Architecture design, UI/UX, security and database management

→ CI/CD, DevOps

→ Team mentoring and code review practices

## Healthcare Domain Expertise (19+ years)

→ HL7/HL7-FHIR protocol implementation

→ ASTM standards for laboratory automation

→ RFID integration in hospital environments

→ Real-time data processing for critical systems

→ Mirth Connect healthcare integration platform

## Quality & Security Standards

→ Fortify OnDemand - Static Application Security Testing (SAST)

→ SonarQube - Code quality and security analysis

→ OWASP Top 10 compliance and vulnerability assessment

→ Healthcare security standards (HIPAA, GDPR compliance)

→ Penetration testing and security audits

→ Code coverage and automated testing pipelines

## Multi-Database Expertise

→ Multi-motor support (MySQL, MariaDB, SQL Server, Oracle, DB2)

→ Database migrations with Flyway

→ Cross-database compatibility and optimization

## Technical Skills

.NET 9 C# 13 Java 21

Spring Boot Spring Data JPA Spring Security

React Angular TypeScript Blazor Thymeleaf

WPF WinUI Uno Platform RCP / RAP

Bootstrap Tailwind

SQL Server MySQL Oracle IBM DB2 MariaDB

Azure DevOps Docker Git Jira

SignalR WebSockets Socket.io

Omnibona S.L 2014 - 2015

Software Developer (Part-time)

## Multi-platform Health Application

→ Design and development of multi-platform application about healthy habits

→ Nutrition and exercises in game mode for startup company

## Technical Skills

ASP.NET MVC Razor Thymeleaf Entity Framework LINQ HTML5 CSS3 Bootstrap JavaScript jQuery Microsoft Azure

Oesia 2003 - 2005

Software Developer | Healthcare, Telecom, Public Services

Clients: Telefónica, Hewlett-Packard, Siemens

.NET C# SQL Server Oracle

L'Oréal Spain 1998 - 2003

SAP Key Business | Business Analyst

## SAP R/3 Project Leadership

→ Business Key for SAP R/3 implementation (FI, CO, MM modules)

→ Project planning, design and implementation of SAP modules

→ Reports development and ABAP IV programming

→ Business requirements analysis and stakeholder management

## Historical Projects

→ 2000 and Euro Projects - Y2K compliance and Euro currency conversion

→ Management Applications - Accounts and Purchasing systems

→ AS/400 and IBM AIX systems integrations

## Technical Skills

SAP R/3 ABAP IV C++ RPG 4GL AS/400 IBM AIX Oracle CA Ingres

Easynet España S.A. 2003

Support Technical

## Technical Support

→ Technical support and customer service

Ministerio de Asuntos Exteriores 1998

Software Developer

## Diplomatic Passports Management

→ Design and create an application to manage diplomatic passports

→ Passports management project development

## Technical Skills

4GL CA Ingres

$ which ai-tools --verbose

# AI-Assisted Development Stack (2024-2025)

🤖 Cursor Pro

AI-powered code editor with vibe coding

● INTEGRATED

🧠 Claude Code

CLI-based AI assistant for development

● INTEGRATED

🔮 Gemini CLI

Google's AI assistant for code generation

● INTEGRATED

🤖 GPT5 Codex

OpenAI's advanced AI coding assistant

● INTEGRATED

🚀 GitHub Copilot

AI pair programming assistant

● INTEGRATED

📚 NotebookLM

AI research and documentation

● RESEARCH TOOL

# AI/ML Projects & Experience

🤖 azure-ai-services

Azure AI Integration | OpenAI services through Azure AI

Azure OpenAI Semantic Kernel .NET 8 Function Apps

🧠 prompt-engineering

Prompt Engineering & AI Development | Advanced AI-assisted development techniques

Prompt Engineering AI Development ChatGPT Integration AI Architecture

🧠 llm-evaluation

LLM Evaluation Framework | Custom framework for evaluating language models

.NET 8 OpenAI API JSON Export QA Generation

⚡ semantic-kernel

Semantic Kernel Projects | Microsoft's AI orchestration framework

Semantic Kernel Plugin Architecture Function Calling Bing Search

# Vibe Coding Philosophy

Leveraging AI to focus on problem-solving and architecture

while accelerating implementation without sacrificing code quality.

$ ls -la skills/ --complete-portfolio

# Complete Technology Portfolio - 25+ Years of Experience

📁 backend/

● .NET 9 / C# 13
● Java 21
● Spring Boot 3.x
● ASP.NET Core 9
● Node.js / Express
● Python / Django
● PHP / Laravel
● Erlang / Haskell (Functional)

📁 frontend/

● React
● Vue.js
● Angular
● TypeScript
● Blazor WebAssembly
● WPF / WinForms
● Uno Platform / WinUI
● HTML5 / CSS3
● Tailwind / Bootstrap

📁 mobile/

● Kotlin (Android)
● Android Studio

📁 databases/

● SQL Server
● MySQL
● PostgreSQL
● Oracle
● IBM DB2
● MongoDB
● Redis
● Cassandra
● InterSystems Caché
● Informix Dynamic Server
● CA Ingres

📁 dotnet-ecosystem/

● EF Core / Dapper / LINQ
● NLog / Serilog
● AutoMapper
● Polly.NET
● SignalR
● xUnit / nUnit
● Moq
● Hangfire (Background jobs)
● MediatR
● FluentValidation
● MailKit

📁 java-ecosystem/

● Hibernate / JPA / Criteria API
● Maven / Gradle
● JUnit / Mockito
● Apache CXF / Jersey

📁 spring-boot/

● Spring Data JPA
● Spring Security + OAuth2
● Spring MVC / WebFlux
● Thymeleaf
● Spring AOP
● Flyway Migrations
● Spring Boot DevTools
● Spring Validation
● Thymeleaf Security Extensions
● Spring Cloud

📁 devops/

● Azure DevOps
● Docker
● Kubernetes
● Terraform
● Ansible
● Git
● GitHub
● GitHub Actions
● Jenkins

📁 cloud/

● Microsoft Azure
● AWS

📁 application-servers/

● Apache Tomcat
● Microsoft IIS
● Oracle WebLogic
● WildFly
● IBM WebSphere

📁 testing-tools/

● Selenium WebDriver
● Playwright
● Jest
● Vitest
● Jasmine / Karma

📁 quality-security/

● Fortify OnDemand (SAST)
● SonarQube
● OWASP Top 10
● Healthcare Security (HIPAA, GDPR)
● Penetration Testing
● Code Coverage Analysis

📁 ai-tools/

● Cursor
● Claude Code
● Gemini CLI
● GPT5 Codex
● GitHub Copilot
● Azure OpenAI Services
● Semantic Kernel
● NotebookLM

📁 dev-tools/

● Visual Studio Professional
● Visual Studio Code
● Cursor
● Eclipse
● IBM Rational Suite
● Postman / Insomnia

📁 enterprise-systems/

● SAP R/3 (FI, CO, MM)
● AS/400 Systems

📁 microservices-messaging/

● Apache Kafka
● RabbitMQ
● Spring Cloud (Eureka, Hystrix)
● Microservices Architecture
● Event-Driven Architecture

📁 big-data-analytics/

● IBM Cognos
● Talend ETL
● Elasticsearch
● Prometheus
● Grafana

📁 specialized-tech/

● Blockchain & Web3 (Solidity, Ethereum)
● Game Development (Unity 3D, C#)
● IoT (Arduino, Raspberry Pi)
● Computer Vision (Infaimon CVB)
● Document Recognition & Processing (Abbyy Technologies)
● CMS Development (WordPress, Joomla)

📁 project-management/

● Jira
● Confluence

📁 soft-skills/

● Team Leadership
● Mentoring Junior Developers
● Code Review & Quality Assurance
● Technical Documentation
● Stakeholder Communication
● Problem Solving & Analytical Thinking
● Agile/Scrum Ceremonies

📁 historical-langs/

● ABAP IV (SAP)
● RPG (AS/400)
● 4GL (Ingres)
● COBOL
● Pascal
● C++

$ cat methodologies.txt

# Development Methodologies & Software Engineering Principles

🔄 Agile Methodologies

→ Scrum (Sprint Planning, Daily Standups, Retrospectives)

→ Kanban (Continuous Flow, Work in Progress)

→ XP (Extreme Programming)

→ Lean Software Development

🏗️ Architecture Patterns

→ Clean Architecture

→ Domain-Driven Design (DDD)

→ CQRS (Command Query Responsibility Segregation)

→ Microservices Architecture

→ Event-Driven Architecture

→ SOA (Service Oriented Architecture)

⚡ SOLID Principles

→ Single Responsibility Principle

→ Open/Closed Principle

→ Liskov Substitution Principle

→ Interface Segregation Principle

→ Dependency Inversion Principle

🧪 Testing Methodologies

→ TDD (Test-Driven Development)

→ BDD (Behavior-Driven Development)

→ ATDD (Acceptance Test-Driven Development)

→ Unit Testing

→ Integration Testing

📋 Design Patterns

→ Gang of Four (GoF) Patterns

→ Creational Patterns (Factory, Builder, Singleton)

→ Structural Patterns (Adapter, Decorator, Facade)

→ Behavioral Patterns (Observer, Strategy, Command)

→ Repository Pattern

📚 Code Quality

→ Clean Code Principles

→ Code Review Practices

→ Refactoring Techniques

→ Technical Debt Management

→ Documentation Standards

# 25+ years applying software engineering best practices

✓ Expert in modern development methodologies and architectural patterns

✓ Strong advocate for clean code and quality engineering practices

$ cat training_history.log | grep -E "2024|2025"

# Recent Training & Courses (2024-2025)

📅 2024-2025

→ Formación Integral en Arquitectura Cloud, DDD, TDD e IA

→ Desarrollo con IA - AI-assisted development

→ Introducción a la IA y Prompt Engineering - AI fundamentals

→ Claude Code CLI - AI assistant integration

→ Gemini CLI - Google AI code generation

→ NotebookLM - AI research and documentation

📅 2023

→ Ionic (app) y Net Core (backend) - Udemy

→ Go / Golang desde las bases - Udemy

→ Big Data Fundamentals - Udemy

→ Dart & Flutter - Udemy

→ Vue.js avanzado - Udemy

📅 2022

→ React + Redux - Udemy

→ .NET MAUI con Visual Studio 2022 - Udemy

→ DevOps, Docker, Kubernetes, microservices y Azure .NET 6 - Udemy

→ Azure Devops - Udemy

→ AWS - Udemy

📅 2021

→ Go / Golang - Udemy

→ TDD - Test driven development con Java y JUnit - Udemy

→ Patrones de Diseño y principios SOLID - Udemy

→ Refactorizar código Java - Udemy

📅 2020

→ DevOps. Las artes marciales del software - Udemy

📅 2019

→ Java8 (Functional and lambda expr.) - Udemy

→ Microservicios con Spring Boot / Netflix Eureka - Udemy

→ Programación Python para Machine Learning - Udemy

→ Curso de Python 3 - Udemy

→ Desarrollo de videojuegos con Unity - Udemy

→ Mi primer videojuego con Unity - Udemy

→ API RestFul con Laravel - Udemy

→ Dominando Laravel. De principiante a expert - Udemy

→ Android con Kotlin + Firebase + Google - Udemy

→ Machine Learning - Udemy

→ Curso de Django - Udemy

📅 2018

→ Implementación de soluciones en Microsoft Azure - Udemy

→ Python + Django - Udemy

→ Desarrollo de dApps en la blockchain de Ethereum - Udemy

→ Introducción a blockchain. criptomonedas y Ethereum - Udemy

→ Xamarin Forms y Azure - Udemy

→ Angular 6 avanzado - Udemy

→ Curso avanzado de Docker - Udemy

→ Spring Framework 5 - Udemy

→ Persistencia de datos con Java. Hibernate + Spring JPA - Udemy

📅 2017

→ ASP.NET Core MVC - Udemy

→ Curso de iniciación a Haskell - Udemy

→ Xamarin. Build Android and IOS Apps - Udemy

→ Servicios con WCF - Udemy

📅 2016

→ Git + GitHub - Udemy

→ Desarrollo web Javascript, Angular, Node y MongoDB - Udemy

📅 2015

→ SEO para WordPress - Udemy

→ Aprende a triunfar con SEO - Udemy

📅 2014

→ Community Manager, Redes sociales - HP Formación

📅 2013

→ Marketing 2.0 - Grupo Fides21

→ Team Building. Gestión de Liderazgo - Fides21

📅 2006

→ IBM Rational V7. Clearcase, SOA, Business Modeler

→ IBM DB2

→ Infaimon Sherlock. Vision Artificial

→ Infaimon CVB. Vision Artificial

📅 2005

→ Gestión De Proyectos - Oesia

📅 2004

→ Programación Visual C++ - Oesia

📅 2003

→ Administración SQL Server - Sunion Gesfor

→ Programación Java - Oesia

→ Optimización Oracle 8i - MR Informática

→ PL/SQL - Dayfisa

→ Xml - IBM Learning

→ Administración Oracle - Dayfisa

→ Macromedia Flash - IBM Learning

→ Ingeniería De Software - Sunion Gesfor

📅 2002

→ SAP MM. Verificación De Facturas - Sap España

→ Programación Avanzada Java - IBM Learning

→ Administración AIX - IBM Learning

→ Programación Avanzada RPG IV (AS/400) - IBM Learning

📅 2001

→ Programación Java - Gesein

📅 1999

→ Cobol – CICS – DB2 - Cap Gemini

📅 1998

→ Técnico En Sistemas Unix / Oracle - Sunion Gesfor

→ Microinformática - Academia Teide

# Total courses completed: 80+ | Platforms: Udemy, IBM Learning, Oesia, Cap Gemini, Academia Teide, HP Formación, Fides21

# Active learner since 1998 (25+ years of continuous training)

$ find ./ml-projects -name "*.py" | wc -l

# Machine Learning & Data Science Projects

🐍 python-ml

Python Machine Learning | Scikit-learn, Pandas, NumPy projects

Python 3 Scikit-learn Pandas NumPy Jupyter

🧠 tensorflow-projects

Deep Learning | TensorFlow and neural networks

TensorFlow Keras Neural Networks Data Preprocessing

📊 data-analysis

Data Analysis Projects | Statistical analysis and visualization

Pandas Matplotlib Seaborn Statistics

$ git log --oneline --all --graph --decorate

# Featured Professional Projects (Becton Dickinson - Healthcare)

# Sample of enterprise projects - 25+ years of professional development

🏥 bd-support-system

Hospital Inventory Management System | Enterprise platform with Clean Architecture + DDD + architectural patterns

.NET 9 C# 12 Clean Architecture DDD CQRS MediatR Multi-DB JWT RBAC Entity Framework Core 9 Minimal APIs Swagger AutoMapper FluentValidation Hangfire SignalR Uno Platform React TypeScript XAML Android iOS WebAssembly Windows macOS Linux Vitest Playwright xUnit Moq

→ Hospital equipment tracking and location management system

→ Clean Architecture with Domain-Driven Design (4 layers)

→ Architectural patterns implemented (Repository, Specification, Unit of Work, etc.)

→ Multi-database support (SQLite, MySQL/MariaDB, SQL Server, Oracle, DB2)

→ JWT authentication with refresh tokens + Role-Based Access Control

→ Cross-platform UI: React (Web) + Uno Platform (6 platforms)

→ 115+ comprehensive tests (Unit + Integration + E2E with Playwright)

→ Complete technical documentation (30+ detailed docs)

→ Background jobs with Hangfire + Real-time notifications with SignalR

→ Advanced features: File storage, Report generation, Search indexing

🏥 bd-rfid-system

Healthcare RFID Management System | Full-stack enterprise platform for hospital sample tracking

Spring Boot Thymeleaf Angular TypeScript .NET C# PHP Laravel Node.js Express Oracle SQL Server IBM DB2 MySQL WebSockets RFID DDD REST API JWT Swagger

→ Tag Manage: RFID tag management interface

→ Tag Backend: REST API with multi-database support

→ SSTSDaemon: Background service for sample tracking

→ Tag Shipping: PHP/Laravel shipping module

→ Clean Architecture with Domain-Driven Design

→ Real-time dashboard with WebSockets (Stomp.js)

→ JWT authentication & session management

→ WinUI 3 desktop application

→ Domain-Driven Design with layered architecture

→ RFID reader integration (CAEN, Impinj)

→ Distributed caching & high availability

→ In production across 40+ hospitals

🏥 bd-widerlab-system

WiderLab System | Integral phlebotomy room management with HL7 messaging broker

Java Eclipse HL7

→ End-to-end management of extraction room workflows

→ HL7 broker for interoperability with hospital systems and diagnostic devices

→ In production across 40+ hospitals

📄 scanbatch-ocr

Document Processing System | Batch scanning with OCR and barcode recognition

WPF C# Abbyy OCR TWAIN WIA Windows Services

→ Abbyy SDK integration

→ Barcode recognition library

→ TWAIN scanner driver support

→ Windows Service daemon for background processing

→ In production across 40+ hospitals (Spain & EMEA)

# Learning & Experimental Projects

# Sample of personal projects - continuous learning and technology exploration

🤖 ai-experiments

AI/ML Projects | OpenAI API, Azure AI, prompt engineering

Python OpenAI API Azure AI LangChain

🐳 devops-practice

DevOps & Cloud | Docker, Kubernetes, AWS, Azure pipelines

Docker Kubernetes AWS Azure DevOps Terraform

☁️ microservices-netflix

Spring Cloud Microservices | Netflix stack implementation

Spring Boot Eureka Hystrix Docker Kubernetes

⚛️ react-fullstack-complete

Full Stack Open Course | Complete React + Node.js + MongoDB

React TypeScript Node.js Express MongoDB Redux

🔧 testing-advanced

Advanced Testing | Playwright, Jest, Vitest, Testing Library, Selenium

Selenium Playwright Jest Vitest Testing Library TDD/BDD

☁️ cloud-functions

Serverless Computing | Azure Functions, AWS Lambda

.NET 9 Azure Functions AWS Lambda Serverless

📱 kotlin-android

Android Development | Kotlin mobile applications

Kotlin Android Studio Mobile UI

🤖 azure-ai-integration

Azure AI Services | OpenAI SDK, Semantic Kernel, LLM evaluation

.NET 8 Azure OpenAI Semantic Kernel Microsoft Extensions AI

☁️ cloud-architecture-projects

Cloud Architecture Projects | Azure + AWS deployment, DDD, TDD, IA integration

Azure AWS .NET 8 Spring Boot DDD TDD Azure Functions AWS Elastic Beanstalk

→ Azure deployment with .NET 8

→ Azure Functions serverless

→ AWS deployment with Spring Boot

→ Cloud architecture patterns and best practices

🔌 iot-embedded-systems

IoT & Embedded Systems Suite | Arduino, Ethernet Shield, Bluetooth, Web Services, Mobile Integration

Arduino Netduino C++ Ethernet Shield Bluetooth HC-05 CoAP Protocol aREST API Xamarin Android Web Services

→ IoT system with Arduino and Ethernet Shield

→ Web Services for remote communication

→ CoAP and REST protocols for IoT

→ Bluetooth integration for mobile devices

→ Xamarin mobile app for remote control

🚀 blockchain-web3-suite

Blockchain/Web3 Development Suite | Solidity, Web3.js, Truffle, Ethereum, Smart Contracts

Solidity Web3.js Truffle Ethereum Smart Contracts JavaScript

→ Token ICO (Deka Token) with complete functionality

→ Smart contracts for token management

→ Ethereum testnet integration

→ Web3 frontend for contract interaction

→ Wallet integration system

📱 android-kotlin-mobile

Android/Kotlin Mobile Development | Native Android development with Kotlin

Kotlin Android Studio Firebase Auth Google Sign-In JUnit Espresso

→ Native Android application development

→ Firebase authentication with Google OAuth

→ UI/UX with ConstraintLayout

→ Testing with JUnit and Espresso

🎮 unity-game-development

Unity Game Development | 2D game development with Unity 2020.3

Unity 2020.3 C# Game Development 2D Graphics

→ Complete 2D game with Unity

→ Interactive text adventure game

→ Dialogue and narrative system

→ Game mechanics implementation

→ Custom assets and sprites

☁️ devops-microservices-arch

DevOps & Microservices Architecture | Kubernetes, Docker, .NET Core, Ocelot Gateway

Kubernetes Docker .NET Core Ocelot MongoDB SQL Server Microservices

→ Complete microservices architecture

→ API Gateway with Ocelot

→ Docker containers for each service

→ Kubernetes orchestration

→ Multiple databases (MongoDB + SQL Server)

→ Services: Gateway, Library, Security

# Portfolio & Open Source

🌐 Portfolio: https://rsvidal.github.io

💻 GitHub: github.com/rsvidal

$ echo $CONTACT_INFO

# Contact Information

📧 Email: sanvidal1@gmail.com

💼 LinkedIn: linkedin.com/in/rsanvidal

🌐 GitHub: github.com/rsvidal

🌍 Location: Madrid, Spain (EU)

# Download CV

📄 cv_rafael_san_vidal.pdf

✓ Available for new opportunities and collaborations

✓ Open to remote/hybrid work arrangements