Guillermo Herrero
Software Engineer | Mentor | IT Consultant
With over a decade of experience in software development and more than 7 years mentoring engineers at all levels, I specialize in helping developers write clean, scalable code and master modern technologies.
I've worked with top organizations like Thales Group, Allianz, and the Austrian Ministry of Interior, delivering hands-on training in Clean Code, Agile, Software Architecture, and Microservices. As a mentor, I’ve guided students in Java, Spring Boot, Flutter, React, and more, helping them level up their careers with clear explanations, real-world insights, and practical coding examples.
Whether you're a beginner looking to break into tech or an experienced developer refining your skills, I can help you write better code, solve complex problems, and gain confidence as a developer.
REVIEWS FROM CLIENTS
Clients: Beyond Education.
Technologies: Dart, Flutter, JavaScript, TypeScript, React, Next.js, ...
Clients: Beyond Education.
Technologies: Dart, Flutter, JavaScript, TypeScript, React, Next.js, HTML, CSS, Sass, Firebase, Google Cloud, Git, NoSQL.
IT Consultant and Trainer (B2B)
Clients: Thales Group, Allianz, Austrian Ministry of Interior,...
IT Consultant and Trainer (B2B)
Clients: Thales Group, Allianz, Austrian Ministry of Interior, Bank Budapest and others.
Workshops: Clean Code, Design Principles, Java, Spring Boot, Microservices, Continuous Deployment, Agile Methodologies and Product Ownership.
Consulting: Coaching sessions, Code Reviews, Software Architecture Design, Applying Agile, Company Leadership and Management in an IT Environment.
Programming Mentor
Academies: Refugees Code, New Austrian Coding School, Everyone Codes, Codecool, Beyond Education, WiFi Wien.
Technologies: Java, Spring Boot, Dart, Flutter, JavaScript, TypeScript, React, Next.js, HTML5, CSS3, Scss, Sass, Docker, Git, SQL, NoSQL, PostgreSQL, H2, Python.
Architecture and Development of a picture-based recommendation system.
Technologies: Java, Spring Boot, Thymeleaf, HTML, CSS, Java...
Architecture and Development of a picture-based recommendation system.
Technologies: Java, Spring Boot, Thymeleaf, HTML, CSS, JavaScript, PostgreSQL, ElasticSearch.