Alejandro Perellón López
Available
Backend in Java.
With Spring Boot.
AI, with judgment.
Software developer specialized in Java and Spring Boot backend development, with a solid foundation in systems administration and hands-on experience in RAG, automation, and AI integration.
Java and Spring Boot are my daily foundation: APIs, application architecture, databases, and production deployment. On top of that I bring systems administration — servers, networks, security — and practical AI application, including designing on my own a management platform for a professional firm, with responsibility for its architecture, development, and infrastructure. I care about software that's built well and going deep enough into a problem to actually solve it.
name: 'Alejandro',
role: 'Backend',
focus: ['AI', 'Systems'],
};
Current project
Management platform + document AI
Java · Spring Boot · Local RAG
Java & Spring Boot backend
APIs, architecture, and databases — the backbone of everything I build, from requirements to maintenance.
Applied AI
AI-assisted development and building AI systems: RAG, vector databases, local models.
Systems and networks
Servers, networks, VPNs and security — infrastructure that holds up, not just works today.
Automation
n8n and scripting to remove repetitive manual work from real business processes.
Projects
View allFat & Happy POS
Point-of-sale system for restaurants with a socket-based client-server architecture, deployed on a Raspberry Pi.
Paola Glam Art
Professional makeup and characterization portfolio, designed, built and maintained end to end on my own — development, systems and SEO included.
Methodology
View allUnderstand before acting
Problem first, code second — with or without assistance.
Audit before modifying
No change without real context and literal evidence.
Small, traceable changes
Every change is reviewed, tested, and validated before it ships.