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tuvieja72

Sergio Burgos

@tuvieja72
Spain
English, Spanish
About me
I build fast, scalable, and production-ready web applications that solve real business problems. As a Full Stack Developer, I specialize in Java (Spring Boot), React, and modern JavaScript ecosystems, allowing me to handle both frontend and backend development efficiently. I have experience working in professional environments as well as delivering solutions for clients as a freelance developer. I understand how important it is to deliver on time and exceed expectations. If you're looking for a developer who is reliable... Read more

Skills

t
tuvieja72
Sergio Burgos
Offline • 
Average response time: 1 hour

See my services

API & Integrations
I will integrate chatgpt or ai into your website or web app
From$25 / projectMore details
Full Stack Web Applications
I will build your saas mvp web app with modern technologies
From$50 / projectMore details

Portfolio

Work experience

Freelance_Web Designer

Full-Stack Developer

Freelance Web Designer • Freelance

Apr 2025 - Present • 1 yr 1 mo

I am a Full-Stack Developer with hands-on experience building modern applications from end to end. I have worked on projects that involve designing intuitive user interfaces, developing scalable back-end systems, and integrating external APIs. My experience includes developing Android applications using Kotlin and Jetpack Compose, implementing modern architectural patterns such as MVVM, and working with asynchronous programming using Coroutines and Flow. I have also built systems that consume real-time data, handle API communication with Retrofit, and manage local persistence using Room and DataStore. On the back-end side, I have experience working with cloud-based services such as Firebase, including authentication, real-time databases, and push notifications. I am comfortable designing data flows, structuring clean architectures, and ensuring efficient communication between client and server. I focus on writing clean, maintainable code and continuously improving my skills by building real-world projects. My goal is to deliver reliable and well-structured solutions while following best development practices.