I will develop custom full stack web apps and progressive web apps


About this gig
Are you looking to turn your idea into a custom full-stack web application or Progressive Web App (PWA)? I deliver robust, end-to-end web software engineered for high performance on both mobile and desktop.
Working with a single full-stack developer eliminates communication friction and ensures a completely integrated architecture from the UI down to the database.
What I offer:
- Custom Full-Stack Web Applications (Frontend, Backend, Database)
- Progressive Web Apps (PWAs) with native-like mobile performance
- RESTful API development and third-party integrations
- Admin dashboards and business utility software
- Clean, responsive UI/UX implementation
Why work with me?
- Single Technical Partner: Direct communication without managing separate frontend and backend freelancers.
- Business-Focused: Code built for speed, scalability, and seamless user experience.
- Clean Code: Standardized, maintainable, and secure codebase.
Please send a message before placing an order so we can review your exact requirements.
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Get to know MrSySdev.pt
FullStack Developer and DevOps Specialist
- FromPortugal
- Member sinceFeb 2026
Languages
English, Portuguese
My Portfolio
FAQ
What technologies do you work with?
I build using modern full-stack environments including JavaScript/TypeScript, Node.js, databases (PostgreSQL/MongoDB/MySQL), and responsive frontend frameworks.
Will the app work on mobile devices?
Yes, every application is fully responsive, and Progressive Web Apps (PWAs) provide native-like installable functionality on mobile and desktop.
Can you handle the cloud deployment as well?
Yes, infrastructure setup, CI/CD pipelines, and cloud hosting can be included or managed through my dedicated DevOps services.
