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Sergio Gutiérrez Villalba has worked in a variety of roles in the software development industry since 2019. In 2019, they worked as a Software Developer (Full-Stack | MEAN) at ABDProf. Sergio then moved to Gnommo, where they worked as a Software Developer (BackEnd | Golang), developing REST APIs, Clean Code, and Onion Architecture. In 2020, they joined Grupo CASFID as a Software Developer (Full-Stack | React & Node.js), working on SaaS development and remotely at least once a week. In 2021, they joined Internxt as Chief Technological Officer (Hands-On), where they addressed critical problems such as lack of testing culture, unreliable implementations, inefficient development times, disorganization, and outdated databases. Sergio also established documentation and standards, particularly in the backend, and eliminated 50% of the codebase in core projects.

Sergio Gutiérrez Villalba has completed a Bachelor's Degree in Computer Science from the Universitat Politècnica de València (UPV) between 2019 and 2023. Prior to that, they obtained a CFGS Desarrollo de Aplicaciones Web from CIPFP Mislata between 2017 and 2019. Additionally, they have obtained certifications from Cambridge Assessment English such as the First Certificate English B2 in June 2019 and the Preliminary English Test B1 in June 2014. Sergio has also obtained certifications from CodelyTV such as Arquitectura Hexagonal and Principios SOLID Aplicados, as well as from HarvardX such as CS50: Introduction to Computer Science.