Javier Tejero
Backend Developer & AI Engineer at VML THE COCKTAIL
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolJavier Tejero is a backend and AI engineer based in Madrid with 13 years of professional experience building enterprise APIs and production-ready AI solutions. He combines Java/Spring backend expertise with modern Python AI stacks like LangChain and LangGraph to create generative-AI agents and secure REST services. Javier has delivered healthcare patient-portal features with Groovy, Spring and MongoDB and emphasizes testability (JUnit5, Mockito), Dockerized deployments and custom security filters. His background includes hands-on roles across payments processing at Redsys and agency work at The Cocktail, giving him experience balancing stakeholder-driven product needs with robust technical delivery. Before fully committing to tech, he led kitchen teams, a detail that surfaces in his operational discipline and pragmatic problem-solving under pressure. He holds technical training in multi-platform application development and a business degree, bridging technical implementation with commercial awareness.
13 years of coding experience
1 year of employment as a software developer
Grado Técnico Superior Desarrollo Aplicaciones Multiplataforma, Grado Técnico Superior Desarrollo Aplicaciones Multiplataforma at IMF Smart EducationGrado en Administración y Dirección de Empresas, Grado en Administración y Dirección de Empresas at Universidad Rey Juan Carlos
Github Skills (104)
interface-builder10
python10
testing10
http10
unix10
gunicorn10
wsgi10
unicorn10
lambda10
queue10
httpd10
debugging10
continuous-integration10
http-server10
wsgi-server10
Programming languages (7)
Github contributions (5)
travelperk/celery
Apr 2019 - May 2021
Distributed Task Queue (development branch)
Contributions:1 review, 1 PR, 3 pushes in 2 years 1 month
redistask-queueworkerdistributed-systemsmicroservices
travelperk/schematics
Dec 2017 - Feb 2018
Contributions:1 push, 3 branches in 2 months
pythonpython-data-structuresfor-humansdata-structurespython-data
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