Freelancer profile translated to English.
Back to original languageAbout Santiago
Senior Full Stack Engineer specializing in Applied AI, Automation, Cloud, and DevOps.
I integrate practical artificial intelligence and automation (OpenAI, LangChain, n8n, Make) into business workflows to reduce manual tasks, optimize processes, and accelerate decision-making.
With over 9 years of experience as a Full Stack Developer and Programmer, I design and build stable, scalable, and sustainable digital products for companies in sectors such as technology, retail, industry, energy, education, and public administration.
I combine modern full-stack architecture (Angular, React, Next.js, Node.js, Python) with advanced cloud infrastructure and DevOps (AWS, Azure, Docker, Kubernetes, Terraform, CI/CD) to create secure, efficient environments ready for continuous deployment.
I apply generative AI and intelligent automation (OpenAI, LangChain, RAG, n8n, Make) to integrate artificial intelligence capabilities into real systems: automated data analysis, customer classification, report generation, or internal assistants for communication and support.
My approach combines a global technical vision, architectural clarity, and tangible results, providing solutions that reduce time-to-market without compromising quality or security.
Main Stack
Frontend → Angular (v8–v19), React, Next.js, Tailwind
Backend → Node.js (NestJS, Express), Python (FastAPI, Django)
Cloud / DevOps → AWS, Azure, Docker, Kubernetes, Terraform, GitHub Actions, CI/CD
AI / Automation → GPT, LangChain, RAG, n8n, Make
Databases → PostgreSQL, MongoDB, Redis
Security → OAuth2, JWT, Keycloak, cybersecurity best practices
Additionally, I have experience in data architecture and platforms (Snowflake, Databricks, dbt) and recent certifications in Data Engineering (Azure, Databricks, Snowflake).
My goal: to transform ideas into intelligent and automated solutions that combine AI, data, and cloud to generate real business impact.
Spanish
Native or bilingual
Remote only
Primarily works remotely
Experience
- Alfanar Energía España SLU.
On Malt
Project Summary – HRMODULE (Alfanar Energía España SLU)ENERGY AND UTILITIESMarch 2026 - May 2026 (2 months)Working on this project has been a very positive and technically interesting experience. During development, multiple challenges were successfully resolved on both backend and frontend within an architecture based on Python/Django (DRF), React, Docker, and Azure.Complex integrations with external APIs and Web Services were implemented, including connection with the payroll API for obtaining company cost through a custom authentication flow, as well as the creation of an intermediate layer in Django for bidirectional synchronization of time entries with external time tracking systems.Additionally, new full-stack functionalities were developed, such as an advanced and interactive matrix organizational chart, adapted to non-hierarchical business structures, along with new PDF report generation templates integrated into the existing architecture.On the frontend, user experience was significantly improved through dynamic tables with advanced sorting optimized for performance and pagination, in addition to performing code refactoring and standardization tasks to leave a cleaner, more maintainable, and scalable foundation.Communication throughout the project was excellent, allowing for fluid collaboration and rapid resolution of the various technical challenges that arose. - INVENTARIO MUNICIPALMunicipal Inventory Update.January 2026 - February 2026•Functional and technical analysis of the current PHP application tounderstand its structure, business logic, and information flows.•Definition of the new architecture in Laravel, oriented towardsscalability, maintenance, and security.•Migration of code and database, ensuring data integrity andconsistency.•Implementation of security mechanisms: access control, dataprotection, validations, and good development practices.•Adaptation of the application for public access frombrowsers and correct integration via links from municipal websites.•Functional and technical testing to ensure the applicationmaintains the same behavior as the current one and complies withlegal and usage requirements.•Deployment to the production environment, leaving the applicationfully operational.•Initial support after go-live to ensure stability and correctfunctioning.
- C.D. Adonia VícarDigitize Sports ClubJanuary 2026 - February 2026 (1 month)Member and athlete management•Add, remove, and edit members/athletes•Individual profiles with personal and sports data•Classification by categories, teams, and seasonsSports management•Team and squad management•Training and competition calendar•Basic attendance and trackingCommunication•Sending internal communications (notices and news)•Information panel for members•AI Integration•Publication of the club's public contentPrivate area•Access via username and password•Roles and permissions (administration, coaches, members)Security and data protection•Access control•Security best practices•Basic GDPR complianceDeployment and go-live•Environment configuration•Platform publication•Final functionality verification
Reviews
Recommendations
IR
DP
+4
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Education
- Azure DevOpsUdemy2021Certificación orientada a la gestión completa del ciclo de vida del desarrollo mediante Azure DevOps, abarcando control de versiones, integración y despliegue continuo (CI/CD), automatización de pipelines, gestión de proyectos Agile y administración de entornos cloud. El curso proporciona las bases prácticas para implementar metodologías DevOps en Azure, optimizando la colaboración entre desarrollo, operaciones y entrega continua de software.
- Microcomputer and Network SystemsFrancisco Javier de Burgos2015Formación técnica orientada a la instalación, configuración y mantenimiento de sistemas informáticos, redes locales y servicios básicos de infraestructura TI. Incluye competencias en hardware, software, seguridad, administración de sistemas operativos, redes LAN/WAN y soporte técnico, asegurando el correcto funcionamiento y la conectividad de entornos empresariales.