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Mladen S.

Zagreb, Croatia

$59/hr
5.0
50 jobs

I’m a UI/UX designer with 10+ years of experience in UX/UI, SaaS and Mobile App design. I design products that are easy to use, hard to leave, and built to scale. My focus is on the kind of product design that moves metrics: dashboards that reduce cognitive load, SaaS flows that drive activation and retention, and design systems that make engineering teams faster. ━━━━━━━━━━━━━━━━━━━━━━ 🎯 WHAT I DO AS A UI/UX DESIGNER I work across the full product lifecycle as both a UX strategist and UI designer - from early discovery through to production-ready specs and developer handoff: ▪ UX strategy, discovery & problem framing ▪ Information architecture & user flows ▪ Wireframing, interaction design & prototyping ▪ High-fidelity UI design for web, mobile app design (iOS & Android), and cross-platform products ▪ Component-based design systems built for scalability ▪ API-aware UX decisions - designing with technical constraints in mind ▪ AI-assisted UX workflow - concept generation, variation testing, research synthesis ━━━━━━━━━━━━━━━━━━━━━━ 💰 INDUSTRIES WHERE MY UI UX DESIGN DELIVERS RESULTS As a UX/UI Designer with deep SaaS expertise, my strongest work is in high-complexity environments: 🏦 Financial Services & Banking - trading dashboards, lending platforms, regulatory-compliant flows 📊 SaaS Platforms - onboarding, activation funnels, multi-tenant architectures 🏥 Healthcare & MedTech - patient apps, clinical dashboards, HIPAA-aligned UX 🚚 Logistics & Transportation - ops dashboards, dispatch and tracking interfaces 🧰 Management & Internal Tools - CRM, admin panels, back-office systems I've also delivered mobile app design across Wellbeing, Real Estate, eCommerce, and EdTech verticals. ━━━━━━━━━━━━━━━━━━━━━━ 🏆 BY THE NUMBERS ▪ $200,000+ earned on Upwork - Top Rated Plus 🏅 ▪ 4,000+ hours billed across long-term product partnerships ▪ 10+ years of UI UX design and product design experience ▪ 60M+ users reached across products I've contributed to ▪ Multiple startups taken from early ideation to profitable MVP - across SaaS, FinTech, and mobile app design projects ━━━━━━━━━━━━━━━━━━━━━━ 💬 WORKING WITH ME I work best with product teams who need a UI/UX designer to own the experience end-to-end, whether that's a SaaS platform, a mobile app design, or a complex dashboard. Not just deliver screens. 👉 Send a message and I'll get back to you asap.

  • Mobile App Design
  • Figma
  • User Interface Design
  • User Experience Design
  • UX & UI
  • Web Design
  • Mobile UI Design
  • Wireframing
  • Responsive Design
  • Graphic Design
  • Logo Design
  • Prototyping
  • Landing Page
  • Website Redesign
  • Website
  • SaaS
  • Web Development
  • UI/UX Prototyping
  • Product Design
  • AI Content Creation
Robert M.

Zagreb, Croatia

$48/hr
4.9
327 jobs

No matter what I do, I try to put 100% effort and application into it, this applies to any design or creative brief I receive. I am not satisfied with average results and you will never receive an average. When I am designing, I combine all the visuals and sensory experiences that I have ever experienced, to take my design to another dimension and create a unique product through. I don’t allow my creativity and technical expertise to be limited. Expertise in: UI/UX Design for Web, Mobile, and SaaS Products SaaS Application Design and AI SaaS Product Design Mobile App UI/UX Design Web Design and Landing Page Design Product Design and UX Strategy Wireframing, User Flows, and Interactive Prototyping Figma UI Design, UX Design, and Design Systems UX Research, Usability Review, and User Experience Optimization Dashboard, Admin Panel, and Web App Interface Design React-Ready UI Design and Developer Handoff Conversion-Focused UX/UI for SaaS and Digital Products

  • User Experience Design
  • Wireframing
  • User Interface Design
  • Prototyping
  • Interaction Design
  • Mobile UI Design
  • Software Design
  • User-Centered Design
  • Figma
  • UX & UI
  • Framer
  • Custom Web Design
  • Graphic Animation
  • SaaS
  • Design Analysis
Dinko M.

Zagreb, Croatia

$60/hr
4.7
8 jobs

Are you tired of low-quality code, over-billed hours, missed deadlines, and extremely buggy features? Want to work with an experienced engineer who is as passionate about your project as you are and can seamlessly translate your ideas into an app? Let’s chat! Who am I? My name is Dinko, an expert mobile & TV solutions engineer. My goal is to create the app you are dreaming about with the least amount of friction possible. I cannot help everyone, but you may be a right fit if you think: 🔸 ”I have a brilliant idea, but I don’t know how to code” 🔸 “My product is already established, I need someone with deep technical knowledge to take it to the next level” 🔸 “The app is full of bugs, I want them gone” 🔸 “This seems to be a job for an experienced software architect so I can scale later” 🔸 “I want someone who can communicate effectively, work alone and make this happen” Working with me will: ✅ Ease your mind when it comes to code quality ✅ UI will be pixel-perfect and seamless ✅ The app will have minimal bugs ✅ Communication will be clear and frequent ✅ Robustness and scalability will be achieved by using the best architecture approaches and an appropriate amount of automatic tests ✅ Speed of development will be at peak level by leveraging the latest mature technologies and tools I’m not everyone’s cup of tea, so here are some signs we might not be a great fit: ✖ You have a tight budget and are looking for a cheap developer ✖ You like to push people to work faster and then complain about the quality ✖ You like to have 100% control over every detail of the project I’ve previously been engaged with projects in the various domains like: 📢 Marketing 🛒 E-commerce 🏋🏽‍♀️ Fitness and health 👥 Social Media 👔 Human Resources 🌐 Internet of Things and more.. Services I provide: ➡️ Native app development for Android using Kotlin and iOS using Swift ➡️ Hybrid app development using Flutter and Dart ➡️ Backend development using Firebase, Supabase and Dart Ready to know what it feels like to work with an engineer who truly cares about your success? ___________________________________________________ Related keywords: Android developer, iOS developer, Web developer, Mobile developer, Kotlin, Xcode, Swift, SwiftUI, Jetpack Compose, GraphQL, REST API, Android SDK, Android Studio, Git, Flutter, Flutter Developer, Riverpod, GPS, Bluetooth, Native, Hybrid, Hybrid Mobile Development, Back end development, AWS, GCP, Firebase, Supabase, Full-stack development, Smart TV app development, Android TV app development, Apple TV app development, SaaS expert, IoT, B2B, B2C, Full-cycle product development

  • Flutter
  • Firebase
  • JetPack
  • Espresso
  • Behavior-Driven Development
  • Android Room Persistence
  • Azure DevOps
  • Git
  • Unit Testing
  • Android
  • RESTful API
  • Domain-Driven Design
  • Retrofit
  • Coroutine
  • Kotlin
Jurii G.

Zagreb, Croatia

$50/hr
5.0
12 jobs

Hello! ✋ I'm Yuri, a Flutter developer with a passion for creating mobile apps. With 8+ years of experience, I've built user-friendly and efficient applications for some of the largest companies in Europe, along with my own innovative projects. My Skills and Expertise: • 𝗣𝗿𝗼𝗴𝗿𝗮𝗺𝗺𝗶𝗻𝗴 𝗟𝗮𝗻𝗴𝘂𝗮𝗴𝗲𝘀: Proficient in Java, Kotlin, and Dart (Flutter) •𝗙𝗿𝗼𝗻𝘁𝗲𝗻𝗱 & 𝗪𝗲𝗯 𝗙𝗿𝗮𝗺𝗲𝘄𝗼𝗿𝗸𝘀: Skilled in building responsive and dynamic interfaces using React, Next.js, and Flutter for both web and mobile platforms •𝗕𝗮𝗰𝗸𝗲𝗻𝗱 & 𝗖𝗹𝗼𝘂𝗱 𝗙𝘂𝗻𝗰𝘁𝗶𝗼𝗻𝘀: Experienced in developing scalable server-side logic with NestJS, Firebase Cloud Functions, and AWS services •𝗪𝗲𝗯𝟯 & 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻: Familiar with creating decentralized apps (dApps), integrating Web3 solutions, and writing smart contracts in Solidity and FunC for both web and mobile environments • 𝗖𝗹𝗼𝘂𝗱 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀: Experienced with REST, AWS, and Firebase for seamless app integration, including Authentication and Cloud Messaging • 𝗣𝗮𝘆𝗺𝗲𝗻𝘁 𝗦𝘆𝘀𝘁𝗲𝗺𝘀: Skilled in implementing online payment options like Google Pay and CloudPayments • 𝗦𝘁𝗮𝘁𝗲 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: Expertise in using Redux and BLoC architecture for managing app states effectively • 𝗔𝗣𝗜𝘀: Proficient in integrating with 3rd-party APIs and working with GraphQL for backend communication • 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮𝗻𝗱 𝗣𝗿𝗼𝘁𝗼𝘁𝘆𝗽𝗶𝗻𝗴: I create engaging user interfaces using Sketch and Apple Motion, ensuring a visually appealing user experience • 𝗧𝗲𝘀𝘁𝗶𝗻𝗴: Familiar with UI & unit testing using Espresso, Mocktail, and Flutter Tests, implementing automated deployment pipelines Industries I Specialize In: 💡 Healthcare 💡 Fitness & Wellness 💡IoT 💡 Education 💡 Logistics 💡Fintech 🤝 𝗪𝗵𝘆 𝗪𝗼𝗿𝗸 𝗪𝗶𝘁𝗵 𝗠𝗲? I pride myself on delivering quality work on time while maintaining open communication throughout the project. My diverse experience in developing apps for various sectors—including adult content, health trackers, education, AI, web3, and location tracking—enables me to tackle different challenges effectively. 🎓 𝗔 𝗕𝗶𝘁 𝗔𝗯𝗼𝘂𝘁 𝗠𝘆 𝗕𝗮𝗰𝗸𝗴𝗿𝗼𝘂𝗻𝗱: I hold a Bachelor’s degree in Software Engineering & Radiotechnics. My achievements include 2nd place in the VK Hackathon 2018 and developing a popular app on Google Play with 4.5 & 10k+ downloads. I have more than 20 five-star reviews on different freelance platforms. 🚀 𝗟𝗲𝘁’𝘀 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗲! I'm seeking long-term projects where I can make a real difference. If you need a dedicated Flutter developer to bring your ideas to life, let’s connect! I’m excited to help you achieve your goals.

  • Flutter
  • Flutter Stack
  • Smartphone
  • Dart
  • Firebase
  • Mobile App Development
  • Mobile App
  • Android
  • iOS
  • Android App Development
  • Hybrid App Development
  • Minimum Viable Product
  • iOS Development
  • Mobile App Improvement
  • Mobile App Strategy
Matej S.

Pula, Croatia

$75/hr
5.0
43 jobs

" Matej was great to work with. He fully understands the development cycle and how to work with a team. When laying out tasks he easily understands what needs to be accomplished and has great ideas for improvements and efficiency. " Hello and Thank you for considering me for your contract. I am a full stack developer, with more than 13 years of experience. I started in the Casino industry, and I grew to Senior Architect on multiplatform casino games and backend. I have experience with both frontend and backend code architecture and my code is still working flawlessly after all these years. When I code, there are a few things that I value the most: 1. Simplicity 2. Efficiency 3. Communication I am able to quickly adapt to new environments, and new codebases. When designing a system, all of the best practices are honored. Testing, CLEAN architecture, understandable even for non technical persons. My greatest skill is thinking many steps ahead. Like in chess, who is able to outthink his opponent wins. In my case, and I guess that comes with experience, I predict future scenarios so your code is always ready to scale when the time comes. .Net C# Java Spring Php Reactphp Svelte Flutter Dart Rive iOS Android Node.js microservices Firebase MySql MongoDb Angular ... Looking forward to work together ! Matej 🌳🌲🌴

  • Flutter
  • Firebase
  • Architecture Consultation
  • iOS Development
  • Android
  • Git
  • JavaScript
  • Docker
  • Node.js
  • Microservice
  • MongoDB
  • Hybrid App Development
  • Software Consultation
  • Product Strategy
Matej K.

Osijek, Croatia

$100/hr
5.0
11 jobs

⭐ Specialized in Mobile App Development | Flutter, Kotlin & Swift | iOS and Android ⭐ 6+ Years of Advanced Programming Experience ⭐ Expert in Crafting High-Performance Mobile Applications Featured Projects and Achievements: 🔵 'Ihre Apotheken' App Transformation Led the transformation of the Ihre Apotheken app into a robust digital health platform for German pharmacies, achieving 100k+ downloads and a 4.5 App Store rating. Technologies: Flutter, Dart, Firebase, Riverpod 🔵 Revlum Offerwall SDK Development Developed Android and iOS SDKs for Revlum, enabling seamless configuration and launch of an offerwall WebView for user rewards. The Android SDK was built with Jetpack Compose, Koin, Retrofit, and DataStore, deployed as a binary to AWS S3. The iOS SDK used SwiftUI, UIKit, async/await, and URLSession, published as an XCFramework to GitHub releases. Created Flutter and React Native plugins published on pub.dev and npm. 🔵 MAF iOS SDK Redevelopment Fixed a non-functional iOS SDK for MAF, built with UIKit and WebView (WebKit), distributed as an XCFramework via SPM to GitHub releases. Improved integration documentation. 🟠 Car Rental Application Enhancements Enhanced a car rental app, integrating deep linking with uni links and the Smartcar API for contactless lock/unlock functionality. Fixed bugs and refined the codebase. 🟠 PiP App Overhaul Converted the PiP app from Android to Flutter, improving task scheduling and data management. Migrated from Room to Isar for NoSQL performance. Technologies: Flutter, Isar, Firebase, Sentry 🟠 Aplauz Digital Wallet Enhanced UX with biometric authentication and automated localization. Built with Flutter and Riverpod for robust architecture. Technologies: Flutter, Python, Riverpod 🔵 ChatGPTool Developed a Flutter-based app integrating OpenAI's ChatGPT and Whisper APIs for streamlined company communication. Used Firebase for backend services like authentication, cloud storage, and serverless functions. Technologies: Flutter, Firebase, OpenAI APIs ⚫ myKiK POS & Loyalty App Led the development of the myKiK app for KiK Textile & Non Food B.V., building a retail and loyalty platform with Flutter Bloc, Retrofit, and CI/CD via Jenkins. Technologies: Flutter, Bloc, Retrofit, Jenkins 🔵 FootFact Developed a machine-learning-driven app for precise foot measurements, integrating offline-first functionality with Dio, Floor database, and Firebase Authentication. Technologies: Flutter, Firebase, Dio, Floor Database 🟠 Spective Connect IoT Developed an IoT solution addressing WiFi disconnection issues and adding service reporting features using MQTT Protocol and Jetpack components like Room. Technologies: Kotlin, MQTT Protocol, Firebase Analytics 👨‍🏫 Lecturer at Algebra University College, Zagreb Led a 6-month, 230+ hour Android development course, covering Kotlin, Android SDK, Room, Coroutines, Retrofit, MVVM, and clean architecture principles. 🎓 MSc in Computer Engineering Proud graduate of Josip Juraj Strossmayer University, Croatia. 🌟 Why Choose Me? Client-Centric Solutions: I meet project requirements while exceeding expectations. Innovative Problem Solver: I deliver impactful, scalable solutions. Reliable & Communicative: I ensure seamless workflows and client satisfaction. 😁 Ready to elevate your mobile application? Let’s connect and discuss your project needs!

  • Flutter
  • Dart
  • Firebase
  • Mobile App Development
  • Android App Development
  • Kotlin
  • Java
  • iOS Development
  • Python
  • Web Development
  • SQL
  • AI Development
  • Back-End Development
  • CI/CD
  • Full-Stack Development

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