Mobile-first interfaces, strong visual hierarchy, and screens that feel deliberate on real devices.
Available for Flutter, Dart, and mobile product roles
Designing and building mobile apps that feel polished from the first tap.
I am Ryan Juhasz, a Flutter and Dart developer focused on mobile-first product execution, app UI quality, and user flows that feel clear, fast, and ready for real users. I also bring supporting web and product-surface experience where a product needs a broader delivery surface.
Comfortable shaping onboarding, profile, dashboard, and feature flows inside real app experiences.
Built for teams that want polished mobile delivery, readable code, and dependable iteration.
Mobile Expertise
Flutter and Dart are where my strongest product work comes to life.
I am most effective when building mobile products that need strong UI, clear app structure, and polished user journeys. I care about how each screen reads, how flows connect, and how the overall product feels in the hand.
I build mobile interfaces that are meant to be used daily, not just demoed once.
That means prioritizing mobile hierarchy, thumb-friendly interaction, clear navigation, and product flows that stay understandable from screen to screen. I enjoy taking rough app ideas and turning them into cohesive experiences.
I also work comfortably across the wider build. Whether that means connecting app flows to backend logic, shaping Firebase-backed features, or supporting the product with responsive web work, I aim for code that stays clean, adaptable, and easy to extend.
App UI systems
Flutter layouts, reusable components, mobile spacing systems, and interface polish that feels product-ready.
Mobile product flows
Onboarding, profiles, feature entry points, dashboards, and app journeys designed around clarity and retention.
Supporting delivery
Firebase-aware implementation, readable code, responsive support surfaces, and dependable team collaboration.
01
App-first UX
I focus on tap targets, navigation clarity, and screen-to-screen continuity so the app feels smooth and easy to trust.
02
Flutter delivery
I enjoy shaping Flutter builds with a stronger visual system, cleaner component structure, and a more polished mobile finish.
03
Dart and product logic
I can move beyond the surface layer into the logic that keeps app features coherent, maintainable, and ready to grow.
04
Cross-surface support
When a mobile product needs a landing page, dashboard, or supporting web surface, I can keep the experience consistent.
Selected Mobile Work
Flutter apps are now the center of how this portfolio presents my work.
These projects highlight the kind of mobile product work I want to do more of: app UI, user flows, feature structure, and polished Flutter delivery.
Primary stack
Flutter / Dart / Firebase / mobile product UX
Mobile app
Flutter / Dart
GoldenBallz
A Flutter football predictions app designed around fixtures, group play, chat, and leaderboard competition, with mobile flows set up for repeat weekly engagement.
- Real product screens show how the app handles fixtures, social groups, and ranking views.
- Structured for API-driven football data, prediction submission, and synced leaderboard updates.
- Built around tab navigation, chat spaces, and community-focused repeat-use patterns.
Concept app
Flutter / Dart
Perfection Dating App
A Flutter dating app concept centered on profile presentation, discovery, matching, and a more polished consumer-mobile brand direction.
- Presented as a branded concept using the supplied artwork to establish tone and audience.
- Planned around onboarding, profile setup, discovery, matching, and chat-oriented user journeys.
- Well suited to auth, media upload, profile storage, and recommendation-driven UI states.
More mobile and supporting work
Mobile app
Flutter / Dart
Achieve75
A Flutter habit and challenge app built for users following the Hard 75 program, combining daily task tracking, reminder flows, progress milestones, and photo logging in one mobile experience.
- Includes workout alarms and reminders, daily goal tracking, and progress-bar style milestone feedback.
- Supports transformation photo logging, customizable challenge settings, and motivational content flows.
- Designed as a utility-first app focused on accountability, retention, and easy daily check-ins.
Product prototype
Flutter / Firebase
Sport80
A track-and-field app prototype built with Flutter, Firebase, and Riverpod to help athletes and event managers track runs, manage events, and monitor performance data.
- Uses Firebase Authentication, Cloud Firestore, and Firebase Storage for account, data, and media flows.
- Includes Google Maps API, location services, and image-picker support for run tracking and event context.
- Built with Riverpod and real-time Firebase syncing for a more operational, data-aware product structure.
Supporting web work
Vue.js / Tailwind CSS
Cleaniverse
A responsive company website built with Vue.js and Tailwind CSS, shaped around trust-building content, clearer service breakdowns, and a stronger conversion path for a service business.
- Reworked the information architecture to make services, benefits, and CTAs easier to scan.
- Used Vue.js components and Tailwind utility styling to keep the layout consistent across screen sizes.
- Focused on content structure, brand trust, and lead generation rather than heavy client-side effects.
Supporting web work
Flutter web
DarkByte.uk
A Flutter Web business site designed as a clean single-page brand surface, with responsive sections, straightforward CTA placement, and a lightweight cross-platform implementation.
- Built in Flutter Web with reusable sections and responsive layout behavior across screen sizes.
- Structured the content and CTA flow around trust, clarity, and lead-generation intent.
- Shows how the same Flutter skill set can extend from mobile product work into marketing surfaces.
Experiment
JavaScript / HTML / CSS
Space Invaders
A browser-based arcade experiment built with JavaScript, HTML, and CSS to explore game loops, collision detection, score handling, and responsive controls without a framework.
- Uses
requestAnimationFramefor the game loop andlocalStorageto persist a high-score list. - Implements keyboard and touch controls, enemy wave progression, boss phases, and collision logic.
- Shows hands-on DOM state management and timing systems in a more playful interactive project.
Contact
Looking for a Flutter developer who cares about app polish as much as the code.
If you need a Flutter and Dart developer for a mobile product, prototype, app redesign, or supporting web surface, I would be happy to talk through the work. Email is always welcome, and the form below will reach me directly.