I’m Alejandro, an AI and full-stack software developer focused on building production-grade systems where language models and agent workflows do real work—qualifying users, running multi-step business processes, validating outputs, and staying within strict cost and quality limits. I enjoy designing end-to-end pipelines that generate, verify, and ship safely, with guardrails like schema checks, automated testing, and accessibility/security validation. Over the last few years I’ve shipped AI-enabled products used in real environments, including an automated appointment-qualification dental clinic agent (chat + voice) and coding-tutoring platforms with real-time scheduling and execution/verification. I also teach and maintain Python automation tooling, and I’m comfortable across the stack—working with TypeScript/React/Next.js, Node.js, SQL/PostgreSQL, and AI tooling such as Claude/LLM agents and evaluation pipelines.…

Alejandro Horcajuelo Pérez

I’m Alejandro, an AI and full-stack software developer focused on building production-grade systems where language models and agent workflows do real work—qualifying users, running multi-step business processes, validating outputs, and staying within strict cost and quality limits. I enjoy designing end-to-end pipelines that generate, verify, and ship safely, with guardrails like schema checks, automated testing, and accessibility/security validation. Over the last few years I’ve shipped AI-enabled products used in real environments, including an automated appointment-qualification dental clinic agent (chat + voice) and coding-tutoring platforms with real-time scheduling and execution/verification. I also teach and maintain Python automation tooling, and I’m comfortable across the stack—working with TypeScript/React/Next.js, Node.js, SQL/PostgreSQL, and AI tooling such as Claude/LLM agents and evaluation pipelines.…

Available to hire

I’m Alejandro, an AI and full-stack software developer focused on building production-grade systems where language models and agent workflows do real work—qualifying users, running multi-step business processes, validating outputs, and staying within strict cost and quality limits. I enjoy designing end-to-end pipelines that generate, verify, and ship safely, with guardrails like schema checks, automated testing, and accessibility/security validation.

Over the last few years I’ve shipped AI-enabled products used in real environments, including an automated appointment-qualification dental clinic agent (chat + voice) and coding-tutoring platforms with real-time scheduling and execution/verification. I also teach and maintain Python automation tooling, and I’m comfortable across the stack—working with TypeScript/React/Next.js, Node.js, SQL/PostgreSQL, and AI tooling such as Claude/LLM agents and evaluation pipelines.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Beginner
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Language

Spanish; Castilian
Fluent
English
Beginner

Work Experience

Python Programming Instructor / Instructor (Algorithmics) at Algoritmics España
July 1, 2024 - Present
Taught Python and algorithmic concepts and supported exercises and learning outcomes for students (details not fully specified in the resume).
Developer & Incident Manager at Experis España (Santander project)
July 1, 2024 - Present
Built Python automation scripts to track and support reporting workflows, reducing turnaround time by 1–2 hours per report. Owned functional testing and deployment support using CI/CD tooling (Jenkins pipelines). Managed 100+ incidents per month using SQL for investigation and data diagnostics.
Profesor de programación en Python at Algorithmics España
July 1, 2024 - Present
Formación práctica en Python con foco en fundamentos, estructuras de datos, POO, ficheros y pruebas, promoviendo buenas prácticas (PEP 8) y el uso de Git. Diseño de ejercicios y proyectos aplicados y acompañamiento al alumnado para crear scripts y aplicaciones reutilizables, con especial atención a la calidad del código.
Desarrollador Python — Automatización, Testing y CI/CD at Experis España (proyecto en Santander)
July 1, 2024 - Present
Desarrollo de scripts de automatización en Python para generar informes de seguimiento (de Excel a PowerPoint) con formato corporativo, reduciendo el tiempo por informe en 1–2 horas. Diseño y ejecución de pruebas funcionales con Jenkins y pipelines CI/CD, apoyándome en consultas SQL para análisis y validación de datos. Gestión y seguimiento de incidencias (más de 100 al mes) con control de SLA mediante herramientas tipo Jira/ServiceNow, integrando el uso de Excel avanzado, GitHub Copilot y Git en el día a día.
Desarrollador at Implemental Systems
January 1, 2024 - May 31, 2024
Desarrollo de software en equipo, combinando tecnologías de backend y frontend (Java/Spring, Python, JavaScript/TypeScript y SQL).
Desarrollador at Viewnext
October 1, 2023 - December 31, 2023
Desarrollo de software en equipo usando Java/tecnologías relacionadas y también Python, JavaScript/TypeScript y SQL, participando en tareas de implementación y entrega.

Education

CFGS Desarrollo de Aplicaciones Multiplataforma (DAM) at Colegio Salesiano San José, Salamanca
January 1, 2020 - December 31, 2023
Especialización en Inteligencia Artificial y Big Data (en curso) at iLERNA
February 1, 2026 - January 31, 2027
AI/Big Data specialization (in progress) at Higher Technician in Multiplatform App Development (course)
January 1, 2026 - January 1, 2027
Higher Technician in Multiplatform App Development at IES (institution not specified)
January 1, 2020 - January 1, 2023

Qualifications

Claude 101 (Anthropic)
January 11, 2030 - September 29, 2026
Claude Code 101 (Anthropic)
January 11, 2030 - September 29, 2026
Iniciación al Desarrollo con IA: Programa con Agentes (Big School)
January 11, 2030 - September 29, 2026
Claude 101
January 11, 2030 - September 29, 2026
Claude Code 101 — Anthropic Programming with Agents
January 11, 2030 - September 29, 2026
Claude Certified Architect (in progress)
January 11, 2030 - September 29, 2026

Industry Experience

Software & Internet, Education, Professional Services, Financial Services, Healthcare