César García Dublas

The no-code builder for ChatGPT apps. Design, configure and publish apps to ChatGPT's directory — visually. Built solo on the OpenAI Apps SDK + MCP

Freelance consultancy specialised in full-stack development and generative AI solutions for SMEs, mainly in hospitality and healthcare.

As the lead developer I work end-to-end: technical design, architecture, implementation, deployment and maintenance.

PROJECTS & RESPONSIBILITIES:

- Conversational agents with LLMs in production: multi-subworkflow architecture with OpenAI GPT-4o and n8n, integra

Tech Lead of the frontend team at Kelisto, Spain's leading financial comparison platform with high-traffic volume.

RESPONSIBILITIES:
- Technical leadership of the frontend team: architecture definition, coding standards and review processes.
- Technical decision-making on stack, refactors and migrations.
- Cross-functional coordination with product, design and backend teams for continuous deliver

-Frontend Senior Software Engineer, and SCRUM Master leading an agile team of 2 people in the development of a React Web application to create and edit electronic circuits graphically using Drag&Drop.
We developed a React app using SCSS, Material design and connecting with a REST Api built in Java. We used Continuous Integration and worked using GitFlow for Branch Control.

-Frontend Senior Softw

Fontend Developer at the R&D team.
As a part of an Agile team, I test and try to implement different innovations and features on the existing apps, using React Native, Angular, IoT, Blockchain...

Frontend Developer at Digital Service Center. I worked in the creation of a Social Education Network for Mercadona.
I was part of an Agile Team of 15 people responsible to develop the Frontend side of a web and mobile application with Ionic. We used Angular for development, SCSS for styling a "Pixel Perfect" app according to the designs.
To control the code, we used Jenkins for continuous integra

Fullstack developer of both an Order Management Desktop app and a Warehouse Management Desktop App using Yii (PHP framewrok). Both apps were designed using Bootstrap for views, CSS for styling and MySql database. I was responsible of both Back and Front, devloping the Rest Api calling to a MySql DB, and consuming those data from the app.

I also worked on development of a couple features on the wa

Fullstack developer part of a Startup team of 5. We created a Laravel 5 App for wholesalers being able to sell, and exchange medicines across Europe.
I was responsible of the front end, working Laravel views + Angular + jQuery and LESS for styles.

As one of the winners of this contest, I was selected to do some mentorship, talks, and trainings about entrepreneurship and business models for new participants, schools, institutes...

Founder, developer and team management of the project prized by Telefónica and Banco Santander driving it from Valladolid (Spain) to Sillicon Valley.

We created the "FourSquare" for the cities. Being able to check in, rate, evaluate... the streets of the cities. It was made using PHP, Bootstrap, CSS and MySql for the web app, and JAVA for the Android APP

Founder, developer and team management of a navigator APP that helps people to avoid traffic and get the shortests/fastest way to reach a place. We created an Android APP using OpenStreetMaps, and JAVA.

Creation of a Visual Studio plugin for the export/import of databases using NHibernate.

Completed a course on agile and lean project management.

60 hour course.

Curso de inmersión lingüística de 40 horas.

60 hour course.

60 hour course.

Completed the first two years of the degree in Computer Engineering.

Completed a course on SEO and social media marketing.