Hire the best App Designers in Sao Paulo, BR

Check out App Designers in Sao Paulo, BR with the skills you need for your next job.
  • $30 hourly
    - Experienced Flutter/Dart developer - Experience with Firebase and Flutter/Firebase integration - Experience with good software architecture practices (clean architecture) and TDD - Experience with large volume corporate data systems and technologies, such as Laravel/PHP, Bootstrap, Java Web, JavaScript, JQuery, HTML, PL/SQL, C, C++, Perl, Natural, and ADABAS - High-performance data analysis and maintenance for reports and systems correction and advancement using databases such as MySQL, Oracle, and SQL Server - Expertise in the creation, construction, and maintenance of complex systems - Extensive knowledge and interaction with high-performance systems and with customers in the telecommunications, steel, and government industries - Academic training and experience with Python and the creation of neural network models - Didactic experience and solid knowledge in Mathematics - Native Brazilian Portuguese speaker
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    Oracle Database
    Smartphone
    Tablet
    Test-Driven Development
    Dart
    SQL
    Python
    Firebase
    PHP
    Bootstrap
    Clean Architecture
    Mobile App Development
    Flutter
    User Authentication
    MySQL
  • $50 hourly
    Hello! I am a computer engineer working with mobile development, specializing in Android UI development. I worked on mobile projects, such as health, finances, e-commerce, and well-being. With the diversity of the projects I worked in, I implemented several types of screen and UI components, such as: - Sign up and login; - Lists; - Product details; - Search with filters; - Scanners (QR Code and Barcode); - Product checkouts; - Video; - Notifications; - Forms; - and many others. I specialized in UI development because I enjoy studying and thinking about UX, but I'm also comfortable with working with everything in the Android environment. I was part of the development team of the Medite.se app, a meditation app that was awarded the Hidden Gem Award in the Google Play Store, in 2017, as one of the best apps released in that year. My work experience in different companies allowed me to participate in the whole development cycle, from the requirements definitions, through development, testing, deployment to Google Play Store, and maintenance so I can assist you in every step. I have a passion for excellence, and I am always looking to develop pixel-perfect UI. I am constantly studying and practicing to improve my knowledge and skills in pursuit of mastery. I look forward to working with you!
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    RxJava
    Google Maps API
    Model View ViewModel
    Object-Oriented Programming
    Scrum
    Android App Development
    Mobile App Development
    Social Media Account Integration
    User Profile Creation
    Android
    SQLite
    API Integration
    Kotlin
    Java
    Firebase
  • $25 hourly
    I am a software developer and I have worked on different kinds of projects, ranging from web applications (full stack) to desktop and mobile apps. You can check my GitHub profile at github.com/un3481 I am proficient in JavaScript (TS), Python, Ruby, Elixir, Rust, Golang, C++, Java and other languages. I have experience working with Agile methodologies, CI/CD and unit testing. I have also worked with Docker, Kubernetes, AWS and Oracle Cloud. I can help you with: - Fixing bugs. - Improving your script performance or readability. - Developing efficient concurrent scripts for you. - Deploying or Scaling your application. - Developing a full application based on your needs.
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    Automation
    Selenium
    Mobile App Development
    Web Application
    Node.js
    React
    C#
    C++
    Docker
    Golang
    NGINX
    Elixir
    Rust
    TypeScript
    Python
  • $35 hourly
    I'm a web and mobile developer with almost ten years of experience, working with small, medium and large businesses. Main focus on total transparency and willingness to achieve the best result.
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    Swift
    Android App
    Mobile App Development
    Python
    Ruby on Rails
    HTML
    JavaScript
    React
    Laravel
    PHP
    Web Application
  • $90 hourly
    Project manager with over 15 years of experience, leading cross-functional development teams and delivering innovative software solutions. Strong background in the automotive industry, leading the design and development of connected car solutions, including infotainment systems, mobile applications, and cloud platforms. Currently leading the software engineering team at Quave Services. Let's connect and explore how we can collaborate.
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    Team Management
    Risk Management
    Agile Software Development
    IT Consultation
    Web Application
    Mobile App Development
    Project Delivery
    Project Budget
    Excel Formula
    Excel Macros
    Agile Project Management
    Scrum
    Product Management
    Project Management
    Microsoft Excel
  • $40 hourly
    Hello! I'm Gabriel, a seasoned Mobile Developer with nearly 4 years of rich experience in creating applications that have impacted millions of users. My journey in the tech world has been marked by a relentless pursuit of excellence and innovation, primarily in the mobile app domain. What I Bring to the Table: - Expertise in Mobile App Development: With a robust background in developing and maintaining a variety of applications, including white-label digital wallets and micro-applications for banks, I am well-versed in bringing complex and user-friendly apps to life. - Problem-Solving and Optimization: I have a keen eye for identifying and solving developers' problems. I excel at optimizing workflows by creating tools that simplify tasks like designing testing pipelines and automating day-to-day processes. - Collaborative and Innovative: My passion lies in developing innovative solutions to real-world problems. I thrive in collaborative environments where I can work with others to materialize ideas. - Technological Proficiency: My skill set includes proficiency in Flutter, Dart, Clean Architecture, and various state management solutions. I am also experienced in conducting interviews for mobile development positions, ensuring a blend of knowledge and adaptability in team members. My Experience: - iFood (Mobile Engineer): I have played a pivotal role in implementing Clean architecture, presenting UI performance strategies, and creating a back-office in Flutter Web. - Banco BV (Flutter Developer): At Banco BV, I significantly improved the test coverage of the onboarding microapp and collaborated on architectural improvements. - Evertec Brasil (Flutter Developer): Developed a white-label digital wallet and maintained a Kotlin SDK for payments. My Commitment: On Upwork, I am looking to leverage my skills and experience to help your business achieve its technological goals. Whether it's developing a new app from scratch or improving an existing one, I am here to provide solutions that are not just technically sound but also align with your vision.
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    Software Development
    Unity
    Unit Testing
    Mobile App
    Firebase
    Flutter
    Mobile App Development
    Mobile App Development Consultation
  • $25 hourly
    Waves Tech - Agile Development with React Native Dear customer, We are excited to introduce Waves Tech, your partner for the agile development of applications and websites. Specializing in React Native, we offer efficient and cost-effective solutions for your digital needs. Why Choose Waves Tech: Agility in React Native: Fast and efficient development. Multiplatform solutions with expertise in React Native. Commitment to Quality: Excellence in every detail, from code to design. Collaborative Approach: Understanding your needs with close collaboration. Contact us: If you are looking for an agile, efficient and innovative digital solution, Waves Tech is ready to turn your ideas into reality. Get in touch for a personalized consultation. We are a team of developers and we focus on project speed and quality!
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    Front-End Development
    Mobile App
    iOS Development
    Mobile App Development
    App Development
  • $10 hourly
    Discover my personal projects published on Google Play: play.google.com/store/apps/developer?id=r4monir I am a Unity programmer highly specialized in developing immersive and interactive games and applications in 3D, 2D, Virtual Reality and Augmented Reality for various platforms. I'm looking for opportunities to apply my experience in creating game mechanics, level design, artificial intelligence, performance optimization, UX/UI. I have diverse skills such as creating particle effects, animation and integration of controls and use of plugins, aiming to provide engaging experiences and responsive interfaces. My goal is to contribute to creative teams, delivering high-quality experiences to users.
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    UX & UI
    Software Design Pattern
    C#
    Augmented Reality
    Virtual Reality
    Game
    Unity
    Git
    Scrum
    Mobile App Development
    Game Development
    Game Design
  • $30 hourly
    I'm a Senior Software Engineer. I've done a little of everything. My primary experience revolves around web technologies. I can work with: - Web development - Mobile development - Desktop development I can also work as an IT Consultant or Lead Engineer and use my professional experience to help you build an IT solution suitable for your business requirements. I'm your swiss-knife-for-hire for anything related to planning, building, maintaining or analyzing IT software systems. Throw me a problem and I'll give you a suitable solution. Some examples of what I can do: - Turn your nice idea for an App or Website into reality (or give you guidance) - Optimize the SEO of your website - Lead a team of programmers - Hiring of programmers - Work with early stage startups to build solutions from scratch - Create IT systems from start to finish in 18 months - Diagnose IT problems and propose down-to-earth and practical solutions for legacy systems - Fix your bugs - Security analysis of IT systems (I'm not an expert, hire one if you think you should) - Automation of tedious internal processes with creative solutions - Much more...
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    Cloud Engineering
    Angular
    React
    NoSQL Database
    SQL
    DevOps Engineering
    Docker
    Automated Testing
    Python
    Mobile App Development
    Amazon Web Services
    Web Development
    JavaScript
    Node.js
    TypeScript
  • $17 hourly
    I'm a Mobile Developer with experience in native Android and iOS development, as well as cross-platform development with Flutter. I have expertise in the entire lifecycle of an application, from conception to launch on the Play Store and App Store. I've had the opportunity to work on projects with major clients: ✅ Nokia (Technology) ✅ Banco PAN (Financial Services) ✅ Ford (Automotive Manufacturer) ✅ Telefónica Vivo (Telecommunications) I've lived in 2 countries through study grants: ✅ Canada (6 months) ✅ Argentina (1 month)
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    Google Play
    App Store
    Mobile App Redesign
    Mobile App Bug Fix
    Mobile App Development
    Mobile App Improvement
    Mobile App Development Consultation
    Mobile App
    Swift
    iOS
    Java
    Smartphone
    Kotlin
    Flutter
    Android
  • $35 hourly
    Are you looking for a Mobile app developer who can design and develop your app for the next millions of users? ARE YOU - Individual | Big company | Startup who wants to build and create Android app or iOS app from scratch? - looking for a mobile app developer who can integrate new features into your existing android app or iOS app projects? - friendly, reasonable and understandable? - someone who invests in the best so you get better results? - looking for a mobile app development service starting from the design, development to release and publish a mobile app to play store and app store for mobile app users/customers. - looking for a mobile app developer who can transform your idea into reality? If any of that is what you need, message me and I am here to help you. Who am I? - I'm Sagarkumar Surani, a Senior Mobile App Developer with 8+ years of experience and a Master’s degree in Computer Science and Engineering. - I worked with big brands, startups and individuals to create mobile apps for their requirements. My work also got featured a few times in the market store. Apps developed by me have 10 million+ downloads on store and users love to keep the app on their phone as a permanent app. - Since being registered with Upwork, I have worked with a variety of industries which includes Educational, Hospitality, Sales & Marketing, Real Estate and Property, Media & Entertainment (Live Streaming), Human Resources, Financial & Banking Sector, E-commerce, Transport and Automotive for Mobile Development. I specialize in these high-quality Mobile App Designing and Development areas: - Android app development - Kotlin, Java, Android SDK, Android Studio - iPhone app development - iPad app development - Swift, SwiftUI, Objective C, iOS SDK, Xcode - Backend Development - Node.js, API Development - Cross Platform Mobile App Development using Flutter, Dart - UI/UX: Mobile design - Mobile & Web app design - UX/UI design - Landing page design Skills : - Have experience developing, releasing, and maintaining applications as a Mobile app developer - Strong skills in executing pixel & animation perfect UI's relative to good app performance - A willingness to learn new languages or technologies which is required by your product - Have great communication skills and ability to work with your team - Have a great understanding of MVC, MVP, MVVM and take great care to ensure each project is well-architecture with best practices and easily maintainable so it can be enhanced as feature grows. - Experience in mentoring Mobile app developers in industry best practices - The ability to take initiative and work independently with very little supervision - Application requirement analysis - Translating requirements to technical languages In addition to Mobile app development services, my topic areas of expertise include: - Mobile Application Architect - Native Mobile Application Development consultation - Mobile Application UI/UX design using Sketch, Adobe XD, Figma, Zeplin, Invision - Mobile Application backend services Firebase, AWS Mobile Hub - Mobile Application backend development: Node, Express, ES6 & Javascript, MongoDB, MySQL, Php, Restful API development, Google App Engine - Website development, Web Scraping, Web Admin Panel - Chatbot development, Facebook messenger Chatbot If you still think this is right for you, contact me.
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    Android App Development
    Firebase Cloud Firestore
    HealthKit
    Mobile App Development
    iOS Development
    Flutter
    Firebase
    Swift
    Kotlin
    Dart
    IOStoken
    Android
    App Development
    Mobile App
    Java
  • $17 hourly
    Software Developer I'm a software developer currently looking for opportunities to improve my coding skills. I started programming when I was 15, so I could create games. From Unity I learned C# and eventually started studying JavaScript for web development. For me, the best part of working with code is that everything is always changing, so you have to keep improving. There is no comfort zone. So I feel that this is an area where the ability to learn is valued. Currently I'm working with metaverses and immersive web experiences. EXPERTISE Fluent English Object Oriented Programming Web Development Game Desing API integration Clean Code Unity and Godot
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    Unity
    Game Design
    Mobile App Development
    Web Application Development
    Back-End Development
    Front-End Development
    Game Development
    Android
    React Native
    C#
    SQL
    Responsive Design
    React
    JavaScript
  • $25 hourly
    I am a Senior Mobile App Developer having 10+ years of experience. I love to create applications that push innovation forward, helping people and businesses grow. Core skills and experiences: - Framework (native Java, Flutter, React Native, Kotlin, Swift) - FlutterFlow, Flutter, Bubble, React Native, Ionic - Interaction with backend - Rest API, JSON, XML, PHP, NODE.js, C#.net - Databases: Firebase, Supabase, Oracle, SQL Server, MySQL, PostgreSQL,Mongo DB - Google Maps, Geolocation, GPS, Location Tracking - Version Control Tools - GitHub, Bitbucket, GitLab. Why choose me: • Affordable price • 100% client's satisfaction • The highest quality of work • Quick turnaround • Best communication with clients • Written by me I will ensure my enthusiasm for your project to make it a great success.
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    Node.js
    Dart
    API Integration
    React Native
    React
    Ionic Framework
    Bubble.io
    FlutterFlow
    Flutter
    Java
    Android
    Swift
    IOStoken
    Mobile App Development
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