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I will design a modern mobile app UI or website mockup
Jongui
About this gig
Need a clean, modern design for your app or website before you build it?
Im a Computer Engineer with a postgraduate degree in Web & Digital Design. I design user interfaces that look good and are realistic to build, because I also develop websites and back ends myself.
What I offer:
Mobile app screens (Android and iOS style)
Website and landing page mockups
Desktop and mobile versions of each screen
Clickable prototypes to test the user flow
Wireframes and custom icons
Why work with me:
Designs built around real data and real features, not just pretty pictures
Clear structure that developers can follow easily
Fast communication and on-time delivery
Check my portfolio: the full UI of a wine and spirits catalog app, from home screen to product pages and user reviews.
Need it built too? I also offer website development, so we can take your project from design to launch.
Please message me before ordering with a short description of your app or website and a few designs you like as reference.
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
Get to know Jongui
Jongui
Software Engineer
- FromPortugal
- Member sinceMar 2025
Languages
English, Portuguese, Spanish
I’m a Computer Engineer and Oracle Certified Professional with 3+ years of experience on the data layer of business-critical systems. I build back-end services in Java and Spring Boot, optimize SQL and PL/SQL, and design reliable databases. With a postgraduate degree in Web & Digital Design, I also create responsive websites and landing pages in HTML, CSS and JavaScript, taking projects from wireframe to a working product with a solid back end. I value clear communication and on-time delivery.
FAQ
What files will I receive?
High-resolution PNG images of every screen, a PDF with all screens, and an interactive HTML prototype (Standard and Premium) that you can open in any browser.
Do you deliver Figma files?
No. I deliver images, PDF and an HTML prototype. If you need an editable Figma file, please message me before ordering so we can check if this gig is the right fit.
Do you use AI tools?
Yes. I use AI-assisted design tools to speed up my workflow, and I review and refine every screen by hand so it fits your brand, content and goals. If you prefer a fully manual process, please tell me before ordering.
What do I need to provide?
A description of your app or website, the screens you need, your logo and brand colors (if you have them), and a few designs you like as reference.
Can you also build the design?
Yes. I offer website and landing page development, so I can turn your design into a working, responsive website.
Do I own the designs?
Yes. Once the order is complete, you have full rights to use the designs in your project.
Can I order more screens later?
Of course. You can add extra screens to your order or ask me for a custom offer.
