Hi, I'm Raul A.R.
Computer Engineer and Full Stack Developer based in Barcelona, specializing in backend development and custom VoIP solutions.
💼 Currently building custom VoIp solutions at Nubelfon

About Me
I'm a Computer Engineer based in Barcelona, graduated from the Universitat Autònoma de Barcelona with a specialization in Computer Science.
My expertise lies in full-stack development, with a strong focus on backend systems, particularly using PHP with Laravel. I have experience in API integrations, database management, infrastructure deployment, and scripting automation.
Over the years, I have been involved in projects related to VoIP solutions, including automating phone calls for various use cases, real-time call monitoring with Asterisk, and developing platforms for enterprise clients to manage their telecommunication services.
In addition to backend development, I have experience with frontend technologies, system administration, and scripting. I enjoy working in small, collaborative teams where I can contribute to the entire development cycle, from architecture design to deployment and maintenance.
Outside of my professional work, I maintain a home lab environment where I develop projects like ECO2, a website that helped my team win a Hackathon. I also enjoy working on personal projects involving C++ for microcontrollers and Python for rapid prototyping.
- 💼 Professional Experience
- 🎓 Education
Work Experience

Nubelfon - Full Stack Developer & Solutions Developer
2021 - PresentKey Achievements:
- Led and developed enterprise VoIP solutions for government and corporate clients
- Modernized legacy systems through:
- Migration from legacy codebase to Laravel framework
- Implementation of REST APIs for third-party integrations
- Database schema optimization for improved performance
- Architected 2 major platform upgrades enhancing scalability and maintainability
- Developed automation scripts reducing repetitive tasks through queue workers
Core Responsibilities:
- System integration with Asterisk PBX and VTiger CRM
- Database design and optimization for high-volume call data management
- Implementation of security features including Role-Based Access Control (RBAC)
- Development of real-time monitoring dashboards and automated reporting systems
- Creation of technical documentation and client onboarding materials
- Implementation of unit testing for core platform functionalities
Notable Projects:
Automated Calling System
Government Telecom Monitoring Platform
Client Services Portal

Hospital Universitario Bellvitge - Patient Care Assistant
2017 - 2021- Balanced full-time engineering studies with healthcare work
- Provided critical support during COVID-19 pandemic surge
Education Background

Universitat Autònoma de Barcelona
2017 - 2022Bachelor's Degree in Computer Engineering
- Software Engineering with Specialization in computing
- Final Project: Local Voice Assistant Natural Language to SQL - View Thesis Documentation

Language Proficiency
- Spanish - Native proficiency
- Catalan - Native proficiency
- English - B2 Level (First Certificate in English - Cambridge English Assessment)
Technical Skills
Backend & Telecom
- PHP/Laravel
- MySQL Database
- Voice APIs (Google/Amazon)
- Asterisk PBX
- REST API Development
Frontend & UI
- HTML5/CSS3
- JavaScript/jQuery
- Bootstrap
- Laravel Blade
- Responsive Design
Others
- Web Server Management
- Bash Scripting
- C++ (Microcontrollers)
- Python (Fast Prototyping)
- Git Version Control