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Hire the best Kotlin Developers in Nairobi, KE

Check out Kotlin Developers in Nairobi, KE with the skills you need for your next job.
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  • $35 hourly
    • 4.6/5
    • (206 jobs)
    🏆100% job success score. 🏆TOP RATED PLUS ( 3% of talent on Upwork) specializing in Mobile Applications Development targeting iOS and Android platforms using Native and Hybrid (React Native, Cordova & Flutter) approach.
    Featured Skill Kotlin
    Git
    RxSwift
    Flutter
    Java
    JavaScript
    User Profile Creation
    Mobile App Development
    Node.js
    iOS Development
    Android App Development
    Swift
    Objective-C
    React Native
    Hybrid App Development
  • $25 hourly
    • 4.9/5
    • (34 jobs)
    Expert Flutter Developer. Experienced in solving business problems and developing dependable software. Thousands of app store downloads with applications over 5+ years. With me, you get quality code and a reliable partner who can be available for an extended or short time frame. Experience in numerous industries producing solutions to problems using Web, Mobile, and Server Side Technologies. I have experience with small wholesale firms through large hedge funds. Skills on offer: - iOS & Android with Flutter. - Firebase / Firestore. - Dart. - Working with existing code. - Apple approval process (inc. Account Sign In). - Cloud Functions. Typescript/Javascript - SQL / NoSQL Databases - Vue JS. Composition API. - JavaScript / Typescript. - Responsive Websites with Vue & CSS. - Server Side./ Back End Services. Experienced With - Github & Github Actions. - Q&A Testing. - Mpesa Integration Upwork is my full-time gig,🏆 I can commit up to 100% to any part of the development process. If you have questions, please schedule a call I will be happy to discuss your project and offer advice on how you can proceed.
    Featured Skill Kotlin
    UI Graphics
    Figma
    Adobe Inc.
    iOS Development
    iOS
    JavaScript
    Firebase
    SQLite
    Mobile App Development
    Android
    Flutter
    UI/UX Prototyping
    Dart
    Java
  • $20 hourly
    • 5.0/5
    • (8 jobs)
    𝗖𝗵𝗮𝗽𝘁𝗲𝗿 𝟭: 𝗔 𝗹𝗶𝘁𝘁𝗹𝗲 𝗜𝗻𝘁𝗿𝗼𝗱𝘂𝗰𝘁𝗶𝗼𝗻 Meet an exceptional Android Engineer with nearly 𝟱 𝘆𝗲𝗮𝗿𝘀 of experience in building robust Android applications using Kotlin and Java. With over 𝟭𝟬𝟬𝟬 hours on Upwork, I excel in writing exceptional code, solving complex problems, and thriving in collaborative team environments to help companies scale and deliver top-quality products. 𝗖𝗵𝗮𝗽𝘁𝗲𝗿 𝟮: 𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 My technical toolkit of frameworks and libraries includes advanced knowledge of Android development using Kotlin and Java, categorized as follows: User Interface - App Theming - Jetpack Compose - XML - Android Jetpack - Material Components - Custom View Components (Compose and XML) - Lottie - MainActivity, Fragments - Recycler View - Constraint Layout among others Networking - Retrofit - OkHttp - Glide - Picasso Storage and Data Management - Room Database - Shared Preferences - SQLite - Datastore - Keystore Dependency Injection - Dagger - Hilt Inter and Intra Communication and Messaging - Broadcast Receivers - Content Providers - Intents Background and Periodic Tasks - WorkManager - AlarmManager - JobScheduler - Services System Services and Managers - NotificationManager - AlarmManager State Management - Viewmodel - LiveData - Flows - States Asynchronous Programming - Coroutines - RxJava - Threads and Callbacks Logging and Analytics - Firebase/Google Analytics Crashlytics - Timber - Mixpanel Utility Components - DialogFragment - PreferenceManager Testing: TDD - JUnit - Mockito - Mockk - Espresso - Robolectric - Compose UI Testing - Truth - Test Coverage Version Management and Collaboration - Slack - Jira - Bitbucket - GitHub - ClickUp - Git Other - Navigation - Google Play Services like Maps, Google Sign-In etc Best Practices Architectures - Clean Architecture - MVVM - MVI Data Handling - Offline First Architecture - Repository Pattern - UseCase Pattern UI/UX - Material Design - Responsive Design Performance Optimisation - Lazy Loading - Caching Code Quality - Code Review - Static Analysis Others - Security - Test Driven Developement (TDD) 𝗖𝗵𝗮𝗽𝘁𝗲𝗿 𝟯: 𝗣𝗿𝗶𝘃𝗮𝗰𝘆 𝗮𝗻𝗱 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆 𝗶𝗻 𝗔𝗻𝗱𝗿𝗼𝗶𝗱 𝗔𝗽𝗽𝗹𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀 Often overlooked, I've had opportunities to work with some techniques - 𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻: Implemented 𝗔𝗘𝗦 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻 for secure data storage and transmission. - 𝗔𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻: Integrated 𝗯𝗶𝗼𝗺𝗲𝘁𝗿𝗶𝗰 𝗮𝘂𝘁𝗵𝗲𝗻𝘁𝗶𝗰𝗮𝘁𝗶𝗼𝗻 (𝗙𝗶𝗻𝗴𝗲𝗿𝗽𝗿𝗶𝗻𝘁, 𝗙𝗮𝗰𝗲 𝗜𝗗) 𝗮𝗻𝗱 𝗢𝗔𝘂𝘁𝗵 for secure user login. - 𝗦𝗲𝗰𝘂𝗿𝗲 𝗦𝘁𝗼𝗿𝗮𝗴𝗲: Have utilized Android 𝗞𝗲𝘆𝘀𝘁𝗼𝗿𝗲 for secure key management and encryption of sensitive data. - 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: Ensured secure communication with 𝗛𝗧𝗧𝗣𝗦, 𝗦𝗦𝗟 𝗽𝗶𝗻𝗻𝗶𝗻𝗴. - 𝗖𝗼𝗱𝗲 𝗦𝗲𝗰𝘂𝗿𝗶𝘁𝘆: Applied 𝗣𝗿𝗼𝗚𝘂𝗮𝗿𝗱 for code obfuscation. - 𝗨𝘀𝗲𝗿 𝗣𝗿𝗶𝘃𝗮𝗰𝘆: Ensured compliance with 𝗚𝗗𝗣𝗥 𝗮𝗻𝗱 𝗼𝘁𝗵𝗲𝗿 𝗽𝗿𝗶𝘃𝗮𝗰𝘆 𝗿𝗲𝗴𝘂𝗹𝗮𝘁𝗶𝗼𝗻𝘀. 𝗖𝗵𝗮𝗽𝘁𝗲𝗿 𝟰: 𝗜𝗻𝘁𝗲𝗿𝗽𝗲𝗿𝘀𝗼𝗻𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀 - 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗖𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗶𝗼𝗻: This has been my 𝗺𝗼𝘀𝘁 𝗮𝗽𝗽𝗿𝗲𝗰𝗶𝗮𝘁𝗲𝗱 𝗻𝗼𝗻-𝘁𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝘀𝗸𝗶𝗹𝗹 𝗯𝘆 𝗮𝗹𝗹 𝗺𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀, especially considering the diverse settings and environments I have found myself in while working with people all over the world! - 𝗧𝗲𝗮𝗺 𝗖𝗼𝗹𝗹𝗮𝗯𝗼𝗿𝗮𝘁𝗶𝗼𝗻: I work well in agile/scrum teams, actively participating in meetings and code reviews. - 𝗠𝗼𝘁𝗶𝘃𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗟𝗲𝗮𝗱𝗲𝗿𝘀𝗵𝗶𝗽: I lead and motivate teams effectively. - 𝗖𝗹𝗶𝗲𝗻𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: I manage client relationships and understand their needs. - 𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝗶𝗰 Thinking: I align development with business goals. - 𝗣𝗿𝗼𝗯𝗹𝗲𝗺-𝗦𝗼𝗹𝘃𝗶𝗻𝗴: I love challenges and tackle them with innovative solutions. - 𝗔𝗱𝗮𝗽𝘁𝗮𝗯𝗶𝗹𝗶𝘁𝘆: I quickly learn new tools and technologies. - 𝗦𝘁𝗿𝗲𝘀𝘀 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: I maintain productivity under pressure. - 𝗜𝗻𝗶𝘁𝗶𝗮𝘁𝗶𝘃𝗲: I’m proactive in improving processes and learning new skills. - 𝗦𝘂𝗽𝗽𝗼𝗿𝘁: I enjoy providing client and consumer support. - 𝗖𝗿𝗲𝗮𝘁𝗶𝘃𝗶𝘁𝘆: I develop innovative solutions and enhance user experience. 𝗖𝗵𝗮𝗽𝘁𝗲𝗿 5 - 𝙁𝙞𝙣𝙖𝙡𝙚: 𝗝𝘂𝘀𝘁 𝗕𝗲𝗳𝗼𝗿𝗲 𝗬𝗼𝘂 𝗚𝗼 Despite my extensive experience, there is a lot that I don’t know yet. I maintain a humble attitude towards learning and eagerly embrace new challenges beyond my current skill set. I look forward to the opportunity of working together to create exceptional Android experiences. Let's innovate and excel together!
    Featured Skill Kotlin
    Firebase
    Git
    UX & UI
    API Integration
    SQLite
    Native App Development
    Google Play
    Android SDK
    JetPack
    Android App
    Mobile App Development
    Android
    Android App Development
    Java
  • $35 hourly
    • 4.9/5
    • (54 jobs)
    I am a skilled Software developer with outstanding expertise in Java, Kotlin, Python, PHP. I am self-motivated and a freelancer. I like assisting people since its a way of learning as well
    Featured Skill Kotlin
    Photo Retouching
    G-Cloud
    Java GUI
    MATLAB
    Native App Development
    Mobile App Development
    Android App Development
    CSS
    Android Studio
    Flutter
    Java
    Python
    Android
  • $45 hourly
    • 5.0/5
    • (1 job)
    I'm a full stack developer with years of experience in building Frontend Web Applications, Back-end micro-services and mobile applications. Technology Stack Used: Android | Kotlin | Rust | ReactJS | WordPress CMS | NodeJS | React Native | ElectronJS Other Skills: Technical Writing and Video Editing (DaVinci Resolve)
    Featured Skill Kotlin
    Tech & IT
    Android
    JavaScript
    Teaching Programming
    PHP
    React Native
    Node.js
    TypeScript
    CSS
    Rust
    MySQL
    WordPress
    React
  • $50 hourly
    • 4.8/5
    • (18 jobs)
    I'm a programmer with deep knowledge in Rust, C and C++. I mostly do backend and sometimes frontend(JavaScript and React). I'm a great project manager(probably the best) and actually the wisest decision any client can ever make and I don't know why my job success score is decreasing each time I buy connects, so, Just refer to the client feedback in my profile, thank you.
    Featured Skill Kotlin
    Internet of Things Software
    Full-Stack Development
    SQL
    React
    CSS
    API
    ESP32
    Rust
    JavaScript
    Python
    C
    C++
  • $40 hourly
    • 5.0/5
    • (2 jobs)
    A passionate and ardent solution developer in areas of software, mobile and web solutions. My objective is to be a world class solutions and product developer Software Development Skills Languages ---------------------------- Java, PHP, HTML5. Mobile Skills -------------------------- Android and USSD and Mobile Web RDBMS / Database ----------------- PostgreSQL and MySQL Web Applications Framework ------ PHP (YII), JEE (Spring Boot and Spring MVC). Content Management Systems ---- Joomla Web Services ------------------------ XML, XLST, REST and SOAP Unit Testing / Build Tools ----------- Junit, Ant and Log4j Operating systems ------------------ Linux, Unix and Windows.
    Featured Skill Kotlin
    Yii
    Spring Security
    API Development
    Core Java
    Spring Boot
    Joomla
    Yii2
    Spring MVC
    Spring Framework
    iOS
    Android
    PHP
    Java
    MySQL
  • $35 hourly
    • 5.0/5
    • (1 job)
    As a Software Developer, I bridge technology and creativity through innovative solutions like Skiza, an AI-powered platform that transforms books into accessible audiobooks. With 3+ years of experience, I specialize in building intelligent, user-centric applications across Android, backend systems (Ktor, Django), and web technologies (React, JavaScript). My approach is rooted in deep work principles, ensuring meticulous attention to detail and breakthrough technical solutions.
    Featured Skill Kotlin
    Software
    Android
    Google Cloud Platform
    Django
    Python
    React
    Java
    JavaScript
  • $40 hourly
    • 5.0/5
    • (4 jobs)
    I am a software engineer with more than 5 years of industry experience working on full-stack applications. I specialize in backend (Django, Flask, FastAPI), frontend (JavaScript + VueJs), mobile (Android, Kotlin) and DevOps. I offer: - Quick bug fixing for existing projects - Quick prototyping of projects that require an MVP as soon as yesterday. - Setting up automated deployments for existing/new projects - Data scraping specialist. - Software architecture services Some of the skills I have acquired over the years are: - A decade of python development (Flask, Django, FastAPI, PyQt etc) - 4+ years of android development (Java & Kotlin) - 4 years of DevOps (AWS, GCP, Azure, On-Premise) - 4+ years of Javascript development (VueJs)
    Featured Skill Kotlin
    NoSQL Database
    Flask
    Android
    Kubernetes
    Django
    DevOps
    Docker
    Python
    SQL
    Redis
    Java
    JavaScript
  • $30 hourly
    • 5.0/5
    • (17 jobs)
    Software developer well conversant in Java, SQL, APIs, material design concepts, and Android development best practices. A keen eye for detail, minimizing the number of bugs. Strong planner and critical thinker who readily adapts to change, works independently and exceeds expectations. Able to work in teams and meet tight deadlines without compromising quality. Developed a mobile ERP application to keep track of prices, quotations, orders, clients, and suppliers for Sypsan Enterprises. The app is offline-first and data stored online on Google's Firestore database. Users can filter data and generate reports. It also has a calculator to calculate the cost of printing. Developed a food donation mobile app keeping track of food donations and requests, with Firebase Realtime Database as the backend. Developed a weather mobile application using the Netatmo weather API as the source of data. The application displays graphs of weather patterns, data that is stored on Google's Realtime database. Developed an app that brings mentors and mentees together. Users can sign up as either mentors or mentees. Google Africa Udacity Scholarship recipient, successfully completing Udacity Android nano-degree. Google Africa Scholarship 4 recipient, completing the Android Development courses on Pluralsight. Conversant with MIT App Inventor Expert in document conversion and form creation.
    Featured Skill Kotlin
    Mobile Advertising
    Mobile App Design
    Form Development
    Android SDK
    Android App Development
    Mobile App Development
    Smartphone
    Android
    Android Studio
    Java
  • $20 hourly
    • 5.0/5
    • (0 jobs)
    Full-Stack Developer with expertise in building robust and scalable applications. Skilled in mobile development using Flutter, Kotlin, and Jetpack Compose for Android and iOS, and proficient in frontend development with React.js. Experienced in backend development with Java, Spring Boot, and databases like MySQL and PostgreSQL. I deliver high-quality, user-friendly solutions tailored to client needs.
    Featured Skill Kotlin
    MySQL
    Android
    Flutter
    Spring Boot
    PostgreSQL
    React
    Ext JS
    Java
  • $35 hourly
    • 0.0/5
    • (5 jobs)
    With close to 5 years of dedicated expertise, I've honed my craft as a C++ developer specializing in the dynamic realm of Audio DSP programming. At the heart of my skill set lies the mastery of the JUCE Framework, where I orchestrate transformative experiences by seamlessly integrating VST capabilities and delving deep into the intricacies of digital signal processing. Leveraging tools such as FFTW (Fastest Fourier Transform in the West), PortAudio for cross-platform audio I/O, and ASIO (Audio Stream Input/Output) for low-latency audio processing, I orchestrate immersive auditory experiences that captivate and inspire. Complementing my prowess in C++, I navigate the intricacies of CMAKE with finesse, orchestrating streamlined build processes to optimize development workflows. I will build Cross Platform Audio Applications for your organization . My toolkit extends further with Python scripting for automation, Git for version control, and Docker for containerization, enhancing efficiency and scalability across projects.
    Featured Skill Kotlin
    Android App Development
    Unreal Engine
    Flutter
    Mobile App Development
    iOS Development
    CryEngine
    Android
    iOS
    Swift
    Dart
    Unity
    C++
    C#
  • $35 hourly
    • 0.0/5
    • (0 jobs)
    A professional Flutter Developer with experience in the Software Development Industry focusing on Flutter, Flutter, Java, and Kotlin for Hybrid & Native App Development. 🧑‍💻I deliver projects with quality modules and well-written code for future application maintenance. Rest assured that the quality of service you get will be satisfactory. What I offer: - Android SDK, Java, Kotlin - Flutter, Dart - GraphQL, Rest APIs, SQL, SQLite, and MySQL - CI/CD, and Version Controls - Firebase - MVC - MVVM ✅ Yes, I do offer seasonal or feature updates against the clock. I got you. I build on long-term relationships so rest assured, you'll not have to hire new developers for every change you may need in the code base. I look forward to turning your ideas into reality together with you. 💪
    Featured Skill Kotlin
    REST API
    Hybrid App Development
    Android App Development
    Flutter Stack
    iOS
    Firebase
    Figma
    Agile Software Development
    Dart
    Java
    CI/CD
    GraphQL
    Flutter
  • $20 hourly
    • 5.0/5
    • (2 jobs)
    Hi there! I'm a skilled mobile and web developer with over 5 years of experience building responsive, user-friendly, and efficient applications. I specialize in mobile development, particularly in Java and Kotlin, and have a strong eye for UI/UX design, ensuring apps are not only functional but also visually appealing. On the web development side, I'm proficient in JavaScript, React, PHP, and have intermediate skills in Go. I've developed services that work seamlessly across both Android and web platforms, ensuring smooth integration and a consistent user experience. Throughout my journey, I've contributed to various projects that have helped me grow technically and professionally. I’m passionate about building high-quality solutions and always strive to deliver on time. If you're looking for a dedicated developer who can handle both mobile and web projects, feel free to reach out. I'd love to collaborate with you.
    Featured Skill Kotlin
    React
    JavaScript
    jQuery
    PHP
    Java
    Android App Development
    Java GUI
  • $15 hourly
    • 5.0/5
    • (4 jobs)
    I have 5 years experience in Android development. I will bring your app into reality within the shortest time possible. I have programmed very powerful android applications in the past and I am still working on many more amazing projects. I have excellent knowledge in the Java, Kotlin, Firebase and Sqlite Databases. I am ready to start your app idea at your request.
    Featured Skill Kotlin
    Android App Development
    Android Studio
    Android App
    Google Play
    Google Ad Manager
    Google Ads
    Web Application
    Facebook Audience Network
    API Integration
    Java
    SQLite
    Firebase
    Android
  • $10 hourly
    • 4.6/5
    • (5 jobs)
    Hello! I’m a versatile and dedicated Software Engineer specializing in both web and mobile development. With a proven track record of delivering high-quality projects, I thrive in environments that challenge my skills and allow me to grow. 🚀 My Expertise 🌐 Web Development: Proficient in React JS, CSS, Tailwind CSS, and Laravel. I have experience creating responsive and user-friendly interfaces, as well as robust back-end solutions hosted on AWS EC2 instances. 📱 Mobile Development:Skilled in Flutter, with the ability to create smooth, performant apps that consume RESTful APIs. I also have experience in native app development using Java and Kotlin. 🔧 DevOps(Still learning): Familiar with Jenkins, Kubernetes, and Terraform for deploying and managing cloud-based services, ensuring seamless integration and continuous deployment. -🛠️ Frameworks and Tools: Proficient with CodeIgniter,laravel ,react for developing and maintaining efficient, scalable applications. 📚 Continuous Learning: I continuously update my knowledge and skills, adapting to new frameworks and technologies to keep our applications modern and competitive. Notable Projects: BZABC: Developed a comprehensive learning platform for students using React JS, CSS, Tailwind CSS, and Laravel. Managed the backend services on AWS EC2 and integrated them with a Flutter mobile application.I also worked on the app version of bzabc in flutter which I am proficient in Bzabc PubTool: Worked extensively with CodeIgniter to maintain and enhance this tool, ensuring compatibility with new APIs and frameworks. What I Offer: ✅ Quality and Reliability: I am committed to delivering high-quality work that meets your requirements and exceeds expectations. 🤝 Collaboration: Strong communication skills and a team-oriented mindset to ensure smooth project execution. 💡 Innovation: I bring a proactive approach to problem-solving, always looking for innovative solutions to enhance project outcomes. Why Choose Me: 🏆 Experience: Solid experience in both web and mobile development, with a diverse skill set that allows me to tackle a wide range of projects. ❤️ Passion: A genuine passion for technology and a drive to continuously learn and improve. 🔒 Dependability: You can count on me to be reliable, professional, and dedicated to your project's success. Feel free to reach out if you’re looking for a dependable and skilled developer to bring your project to life! Let's create something amazing together. 🌟
    Featured Skill Kotlin
    REST API
    Mobile App Development
    Web Design
    Flutter
    Android App Development
    MySQL
    SQL
    Java
    JavaScript
    Python
    PHP
    HTML
    Django
    Spring Framework
  • $10 hourly
    • 5.0/5
    • (10 jobs)
    I’m a Kotlin developer who focuses on mobile development using Kotlin for both android and ios using KMP. I have 7 years of experience working as an Android developer with 1 year working with the KMM framework. Favorite tools & frameworks 1. Kotlin Multiplatform 2. Compose Multiplatform 3. MVVM architecture 3. Room database 4. Datastore preferences 5. Koin 6. JUnit 4 7. Compose UI testing 8. Ktor client 9. DynamoDB I mainly focus on writing consistent, readable code following clean code patterns following exactly what my clients requested to make sure that I deliver exactly what was requested to the best of my capabilities.
    Featured Skill Kotlin
    C++
    Apple Xcode
    iOS Development
    Swift
    SwiftUI
    Mobile App
    Android App
    Android
    Mobile App Development
    Amazon DynamoDB
    Android App Development
    Android Studio
    Native App Development
  • $500 hourly
    • 0.0/5
    • (0 jobs)
    I’m a skilled Laravel developer with a strong focus on building responsive, secure, and user-friendly business websites. I specialize in creating clean, scalable solutions with modern technologies like Laravel, Blade, MySQL, and Bootstrap. I’ve successfully delivered custom web platforms that include admin dashboards, user authentication, contact forms, and more—always optimized for mobile and SEO. With a background in full-stack development, I bring both technical expertise and clear communication to every project.
    Featured Skill Kotlin
    Application
    RESTful API
    XAMPP Stack
    Desktop Application
    Graphic Design
    Adobe Photoshop
    CorelDRAW
    Website
    Mobile App
    Xamarin
    Firebase
    Java
    iOS Development
    Android App Development
  • $40 hourly
    • 1.2/5
    • (3 jobs)
    I'm an enthusiast software engineer who constantly seeks out innovative solutions to everyday problems. Over the years, I've honed my analytical thinking and collaboration skills, and I love working with a team. I've already contributed to over a dozen projects with a great success I’m looking for a deep learning engineer role, and I’m available immediately.
    Featured Skill Kotlin
    Flutter
    Android UI Design
    Software Development
    Front-End Development
    Back-End Development
    Django
    Clean Architecture
    JetPack
    Java
    Firebase
    Android Studio
    Python
    JavaScript
    Android App Development
  • $25 hourly
    • 5.0/5
    • (2 jobs)
    I am a methodical application developer adept at interpreting technical requirements and specifications to deliver high quality computer systems. Proactive communicator with a collaborative nature and a proven history of resourceful problem-solving. Proficient in design, development, and testing, I possess extensive experience in programming and algorithms, backed by 10+ years of professional expertise in developing software systems. I have successfully managed various projects for small and medium-sized companies, motivating my interest in contributing to the success of your organization. Holding a B.Sc. in Information Technology and an MSc in Software Engineering.
    Featured Skill Kotlin
    API
    Android App Development
    Docker
    GraphQL
    MySQL
    MongoDB
    TypeScript
    JavaScript
    Python
    Laravel
    PHP
    Vue.js
    React
    Java
  • $17 hourly
    • 4.8/5
    • (49 jobs)
    I am a programmer in Android,Android studio, Eclipse, IOS, core-java,c and c++, JavaEE,jasper report,EJB3,JPA,Hibernate, MySQL,Database design, swift, flutter, Mean stack, node.js,kotlin,java fx,python,react,MySQL Workbench, Spring,JSF2, Prime-faces, Google Maps, Java .jar and android .apk reverse engineering tools,Android SMS gateway, Admob adds and Analytics integration,Parse and Pushy integration,firebase stack, article writing. I am trustworthy, and I always give my best.
    Featured Skill Kotlin
    Audio Transcription
    Academic Transcription
    Core Java
    Reverse Engineering
    Android SDK
    Android App Development
    Swift
    Firebase Cloud Firestore
    Dart
    iOS
    Firebase
    Flutter
    Android
    User Authentication
  • $25 hourly
    • 5.0/5
    • (9 jobs)
    Hi there! I am a Java Software Engineer with over three years of experience in developing high-quality applications for Android and backend systems with Spring Boot. I am well-versed in both Java and Kotlin and have a deep understanding of software development principles and best practices. As an Android developer, I have extensive experience developing mobile applications using both Java and Kotlin. I am familiar with the Android SDK, Android Studio, and various third-party libraries, and can develop apps that are performant, scalable, and user-friendly. I am also experienced in integrating with RESTful APIs, as well as implementing push notifications, in-app purchases, and other advanced features. As a backend developer, I specialize in developing RESTful APIs using Spring Boot. I have experience designing and developing microservices architectures, as well as integrating with various databases such as MySQL, PostgreSQL, and MongoDB. I am also well-versed in cloud platforms such as AWS and have experience deploying and scaling applications in the cloud. In addition to my technical skills, I am a great team player and communicator. I am comfortable working with cross-functional teams and have experience collaborating with designers, product managers, and other developers. I am passionate about building high-quality software that meets the needs of users and delivers business value. If you are looking for a Java Software Engineer with experience in Android and Spring Boot, please don't hesitate to reach out. I would love to learn more about your project and how I can help bring your ideas to life.
    Featured Skill Kotlin
    Payment Gateway Integration
    iOS Development
    TypeScript
    Flutter
    RESTful API
    Cloud Services
    Native App Development
    API Integration
    Java
    Spring Cloud
    In-App Purchases
    Spring Boot
    Microservice
    Android App Development
  • $35 hourly
    • 5.0/5
    • (7 jobs)
    ▪️ Android Developer | Kotlin Expert | Tutor | Upwork Top Rated ✅ ▪️ Google UX Design Professional Certificate | Google Certification in Android ✅ 🟣 I offer a 100% Refund if your expectations are not met. 👉🏻 Need an Android Developer to create a high-quality, stable, and scalable Android app? 🔎 I SPECIALIZE IN BRIDGING THE FOLLOWING GAPS: ✔️ Professional Android App Development | Android Development Services ✔️ Scrum Agile Development | Project Management | Agile Methodology ✔️ Quality Assurance (QA) & Testing | Bug-Free App Development ✔️ Third-Party API Integration | Social SDKs Integration ✔️ MVVM Architecture | MVP Architecture | Clean Code Development ✔️ Software Engineering Tools | Methodologies | Android Development Tools ✔️ UI/UX Design and Integration | User-Centric App Development 🟣 LANGUAGES, FRAMEWORKS & TOOLS: Kotlin Development | Java Programming | Android Jetpack | ViewModel | LiveData Retrofit | DataBinding | Hilt | Koin | MVVM Architecture | Dagger | RxJava WorkManager | Paging Library | Navigation Component | Room Database Azure for Android Apps | Jira | Asana | Git | Bitbucket | Gitlab | Trello | MS Teams Android Studio | VScode | Android App Development Tools 🟣 WHY HIRE ME: ▪️ Extensive experience in Android App Development | Android Development Expert ▪️ Certified Google UI/UX Professional | Expertise in Designing Engaging User Interfaces ▪️ Proven track record of boosting sales and enhancing operational efficiency by 40% ▪️ Fluent communication in English | Effective English Speaking & Writing Skills ▪️ Comprehensive understanding of client challenges | Problem-Solving Approach 🟣 TESTIMONIALS FROM SATISFIED CLIENTS: ✅ Shobhit Agrawal, MD at Hermes.AI Client review: 🌟 "Peter is an exceptional Android developer. His professionalism and high-quality work on complex features are highly commendable. I highly recommend him." 🌟 3️⃣ Third Project with Shobhit (Android, Firebase Machine Learning Kit) Client review: 🌟 "Peter consistently surpassed expectations, demonstrating strong problem-solving skills. His communication was excellent, and his expertise was remarkable. I thoroughly enjoyed working with Peter and will definitely hire him again in the future." 🌟 ✅ Andres C., Previous Upwork client Client review: 🌟 "Peter displayed excellent knowledge, skills, and remarkable speed. He delivered a top-quality product." 🌟 ✅ Jessica, Previous Upwork client Client review: 🌟 "Peter provided exceptional support whenever I needed it. I highly recommend him!" 🌟 🟣 Reach out to me to discuss your Android development project. I'm eager to learn about your requirements and how I can assist you. Shoot me a message. For more details and to view my portfolio, please checkout my website: https peterwachira dot com." Warmest regards, Peter - Top Rated Upwork Freelancer.
    Featured Skill Kotlin
    Koin
    Android App
    Android
    Android SDK
    Android Smartphone
    Android UI Design
    XML
    JetPack
    Firebase
    Android Studio
    Android Room Persistence
    Push Notifications
    Retrofit
    Android App Development
  • $30 hourly
    • 4.9/5
    • (17 jobs)
    Hello there! 👋 I'm Thomas, a highly skilled Full-Stack Software Developer with a background in Electronic Engineering and 9+ years of experience building web, mobile, embedded, and game development solutions. My expertise spans frontend, backend, database, mobile, IoT, and game development, allowing me to create robust, scalable, and high-performance applications. 🔹 Web Development: React (Remix) 🔹 Backend Development: NestJS, Golang, Django 🔹 Mobile Development: Lynx, React Native, Flutter 🔹 Desktop Development: Electron.js 🔹 Embedded Systems(IOT): Raspberry Pi, Arduino, MQTT 🔹 Databases: MariaDB, PostgreSQL, Firestore, MongoDB, Neo4j 🔹 Game Development: Godot, LibGDX I specialize in designing scalable architectures, optimizing performance, and integrating hardware with software for IoT-based applications. Whether it's a complex web app, a mobile solution, an embedded system, or a game, I deliver high-quality, well-documented, and maintainable code. What I Can Do for You: ✅ Build custom web and mobile applications with modern frameworks ✅ Develop high-performance APIs and backend services ✅ Create desktop applications using Electron.js ✅ Design and implement IoT solutions with Raspberry Pi & Arduino ✅ Optimize database queries for MariaDB, PostgreSQL, Firestore, and MongoDB ✅ Develop engaging 2D/3D games using Godot and LibGDX ✅ Provide end-to-end solutions for startups and enterprises Let's collaborate to bring your ideas to life! 🚀 💡 Looking for a reliable, efficient, and innovative developer? Let’s connect!
    Featured Skill Kotlin
    C++
    Neo4j
    Flutter
    MQTT
    Raspberry Pi
    Arduino
    libGDX
    Godot
    Electron
    React Native
    Django
    NestJS
    Remix
    React
  • $30 hourly
    • 4.3/5
    • (2 jobs)
    Do you have that fantastic app idea/product that you would like to reach thousands of users or even millions and earns you revenue you are proud of? Hi! I'm Abdulfatah, I have over 5 years of experience. I specialize in Mobile app development, Backend development, and Fullstack development. STRENGTH AREAS ——————————— 1. Android Apps. 2. iOS Apps. 3. Angular Websites. 4. Backend APIs and consuming APIs. 5. Django backend and web apps. 6. React Websites. 7. AWS, Digital Ocean, Azure, and Google Cloud platform deployment. 8. Dockerizing and using containers. 9. adding CI/CD to automate processes. 10. Creating microservices, deploying and managing them. 11. Conversion Rate Optimization (C.R.O) for Websites and apps to help monetization. 12. Automated marketing and sales processes. 13. App Store Optimization (A.S.O) and Search Engine Optimization (S.E.O) 13. Using Mixpanel, Google Analytics, and other event-based analytical tools. 14. Machine Learning for Computer Vision solutions. 15. Data mining and processing. DEVELOPMENT PROCESS ——————————————— 1. Gathering Information. 2. Asking questions for clarification. 3. Break down complex problems. 4. Split into tasks and add to project management tool. 5. Set up a calendar for tasks. 6. Set up meetings every day to align with my client. 7. Design UI/UX using Figma for different screens. 8. Work on tasks daily and push them to GitHub at the end of the day. 9. Have weekly builds/deployment. 10. Monitor the project after it goes to market. 11. Repeat till success is achieved TOOLS ————— 1. Android Studio - making Android apps. 2. Xcode - making iOS apps. 3. VSCode - making Web apps and APIs. 4. Github - Version Control and Collaboration. 5. Trello/JIRA/Pivotal Tracker/Asana - Project management tools and task tracking. 6. Notion - Writing notes and documentation. 7. Postman - testing APIs. 8. Figma - making UI/UX designs. EXPERIENCE IN BUILDING: ——————————————— 1. E-commerce Apps and Websites. 2. Questionnaire and Quiz Apps. 3. Savings and Loan apps. 4. Financial Services and Fintech Apps. 5. Movie/Content Apps and Websites. 6. Livestock App and Website. 7. Chat App and Social Media. 8. Climate monitoring and data app. 9. Cocktail Serving app. 10. Inventory Website. 11. Goals tracking/productivity app and website. 12. Employee payroll system website. 13. Ikea-like Augmented reality furniture app. 14. Painting photo editing app. 15. Mentor app. 16. Extensive and quick search elastic search website and API. 17. Vendor app. 18. Learning system USSD and website for students. When we work together, I will communicate efficiently and regularly; Involving you in every part of the development journey and discussing ideas to make the app successful. I deliver on time and I do not give excuses. I won't stop at only development, I will be there for the whole journey. Available for 40+ hours a week.
    Featured Skill Kotlin
    User Experience Design
    iOS Development
    API Integration
    App Store Optimization
    Firebase
    App Marketplace
    Google Play
    Swift
    Android App Development
    JetPack
  • $17 hourly
    • 5.0/5
    • (2 jobs)
    Value Proposition: With over 8 years of experience as a Senior Mobile App Developer, I deliver high-performance, secure, and innovative mobile solutions that drive business growth. I specialize in native Android and iOS development using Kotlin, Java, Swift, and Jetpack Compose. What I Bring to the Table: Proven Expertise: Successfully led teams and optimized legacy systems, delivering secure and scalable apps. Innovative Solutions: Developed high-transaction applications (e.g., Malipo app with 20,000+ chamas transacting USD 10,000+ daily, and the Bidii app achieving 100,000+ users and USD 100,000+ in weekly transactions). Technical Prowess: Mastery over Android SDK, CI/CD pipelines, advanced security measures (encryption, biometric auth, certificate pinning), and robust testing frameworks (Espresso, JUnit). Client-Centric Approach: I translate complex technical requirements into clear, actionable solutions—ensuring projects are delivered on time and exceed expectations. Key Achievements: Led development and migration efforts across platforms, reducing release time by 40% and lowering crash rates by 35%. Spearheaded the integration of advanced mobile security measures, enhancing user trust and app stability. Let’s collaborate to turn your mobile challenges into growth opportunities.
    Featured Skill Kotlin
    Android App
    Android Things
    Android UI Design
    iOS SDK
    Android SDK
    Android NDK
    iOS Development
    Android App Development
    Java
    Android Studio
    iOS
    Swift
    Android
  • $8 hourly
    • 0.0/5
    • (0 jobs)
    Brian is a Full-Stack Engineer with three years of experience building high-impact, scalable solutions across web, mobile, and cloud environments. He specializes in web and mobile development, with deep expertise in React.js, including advanced hooks like useEffect and useLayoutEffect. His skill set also includes JavaScript, TypeScript, and frameworks such as AngularJS and SvelteKit. With a strong background in AI integration, Brian leverages artificial intelligence to drive insights and enhanced user experiences in web and mobile applications. His contributions to an election mapping platform highlight his ability to deliver innovative, data-driven solutions. Brian thrives in Agile team environments, collaborating effectively to translate complex requirements into seamless software solutions. Passionate about intuitive user experiences, he excels in front-end design, full-stack architecture, and AI-powered feature integration, enabling smarter, data-informed decision-making.
    Featured Skill Kotlin
    CSS
    jQuery
    Bootstrap
    Angular
    JavaScript
    TypeScript
    HTML5
    Java
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