Find the best Kotlin jobs

Take your skills to the next level, explore Kotlin jobs from around the world.
Find work Interested in hiring?

Professionals on Upwork rate clients
Rating is 4.9 out of 5.
4.9

on average from over 2 million reviews
Trusted by
Trusted by
  • Intermediate
  • Hourly
  • Est. time: Less than 1 month, Less than 30 hrs/week

I have a flutterflow project in which I integrate stripe connect. During my tests, after the creation of the service provider I was unable to validate his account so that he could receive transfers from the main account of the platform I need someone to finish making my api calls work with the right data for the proper functioning of the platform. The service provider must be able to be validated in stripe via the application I will take care of the view part myself

FlutterMobile App DevelopmentiOS DevelopmentFlutter StackAndroidAndroid App DevelopmentFull-Stack DevelopmentMobile AppReact NativeFront-End DevelopmentNode.jsKotlinAndroid AppFlutterFlowRESTful API
View job
  • Intermediate
  • Fixed price
  • Est. budget: $100.00

Hye recently i have developed a android app and i want to launching my app to play stor so i need a freelancer for my app my app is ready and tested so only need to launching application on play stor if anyone can do this please message me this job is short will complete is a 1-2 days and app will live on play stor if anyone interested am ready to collaborate on this project we are looking hearing from you thanks

Mobile App DevelopmentJavaKotlinAndroid App DevelopmentMobile AppAndroid App
View job
  • Intermediate
  • Fixed price
  • Est. budget: $2,000.00

Project Overview This project is a WeChat mini program designed for event management and participation. The system will allow users to post and join various activities (such as basketball, billiards, and hiking). The platform will have user roles (individuals, clubs, and businesses) and include features like AR navigation, integrated payment systems, and real-time chat. Development Languages and Tools Front-end Development: Languages: WXML, WXSS, JavaScript (in line with WeChat mini program requirements), or using React Native. Back-end Development: Language: Java (based on your preference). Frameworks: Django for a robust and scalable backend. MyBatis for database management (easily integrates with MySQL or other relational databases). We hope you are proficient with WeChat Developer Tools and familiar with the specifics of mini program development, including compliance with local laws and adhering to WeChat's review process. This includes: Real-time communication features and payment gateway integration. Handling WeChat-specific limitations, including optimizing for successful review. Integrating Amap (Gaode) Maps and third-party APIs tailored for users.

Mobile App DevelopmentAndroid App DevelopmentFlutterKotlinAndroidiOS DevelopmentHTML5Mobile AppAndroid AppFront-End DevelopmentLanding PageWebsiteAI BotAI ChatbotChatbot
View job

How it works

Create a profile

An eye-catching title and client-focused overview help us match you to the work you want. Include your work history, your skills, and your photo. Add more, like an introduction video, to create a profile that really stands out.

Explore ways to earn

Work and earn in different ways. Bid for jobs. Pitch your projects. Discuss your in-demand skills with our recruiters so they can find opportunities aligned with your passions and career goals. Do all three. Create a predictable pipeline and build your network.

Get paid securely

Choose how you get paid. Our fixed-price protection releases client payments at project milestones. Hourly protection bills clients every week. However you work, our service fees are the same. Spend less time chasing, more earning.

Posted yesterday
View job
  • Intermediate
  • Hourly
  • Est. time: Less than 1 month, Less than 30 hrs/week

We need an app developer. We need to make an aplications that runs in ios and android. It has to be conected through API to our website. Bassically we need 3 áreas. -Chat -Proyects -Images

iOSAndroidMobile AppMobile App DevelopmentFlutterNode.jsReactFirebaseKotlinSwiftJavaiOS DevelopmentAndroid App DevelopmentUX & UI DesignWebsite
View job
  • Expert
  • Hourly: $30.00 - $50.00
  • Est. time: More than 6 months, 30+ hrs/week

We're looking for a Backend Developer for ongoing project with experience in developing high performing APIs using Kotlin, Spring Framework and PostgreSQL Database. The project - an AI and data powered vertical social network for cyclists (turning an individual cyclist’s activity data into tangible benefits and amplify it harnessing the power of community to inspire, support, and reward passionate cyclists to achieve their goals). Technology stack: Kotlin, Spring5, Spring Boot, Hibernate, Docker, PostgreSQL, Maven Looking to start from January or February

Spring FrameworkRESTful APIAPIDatabaseDatabase DesignDatabase ArchitectureSoftware Architecture & DesignKotlinPostgreSQL
View job
  • Intermediate
  • Fixed price
  • Est. budget: $200.00

We are looking for an experienced Android developer to add new functionality to the DeepAR Test App, available on GitHub: https://github.com/DeepARSDK/quickstart-android-java TASKS: 1. Filter Slider: - Create a slider to seamlessly switch between AR filters, similar to the swipe functionality in Snapchat. 2. Video and Photo Recording: - Enable video recording with a long press. - Capture photos with a single tap. 3. In-App Gallery: - Build an integrated gallery to view saved photos and videos directly within the app. What We’re Looking For: Proficiency in Java and Android development. Experience working with AR frameworks, preferably DeepAR. A strong understanding of UI/UX principles for mobile applications. Next Steps: If this task is completed successfully, we have additional features and improvements planned, so this could lead to ongoing collaboration. If you’re interested in this project, please get in touch with examples of your previous work on similar Android applications.

Android App DevelopmentAndroidMobile App DevelopmentCameraKotlinJava
View job
  • Expert
  • Hourly: $15.00 - $20.00
  • Est. time: More than 6 months, 30+ hrs/week

**Collaboration Opportunity: Web Development Team Wanted!** Hey there! We're on the lookout for a talented web development agency in India to join us with a team of awesome developers to join our Healthcare Management Platform. - **Platforms:** Linux-Ubuntu, Docker, Nginx - **Backend:** Lumen-Laravel, MySQL, MongoDB, Redis - **Frontend:** Angular, JavaScript - **Mobile:** Kotlin, Swift We’re looking for a team that can work well together and whip up high-quality web solutions quickly. If your agency knows how to build scalable applications and can handle tight deadlines, we’d love to chat with you! --- Let me know if you need any more changes!

LaravelAngularNGINXDockerKotlinMongoDBRedisJavaScriptWeb DevelopmentPHPUbuntuSwift
View job
  • Intermediate
  • Hourly: $15.00 - $30.00
  • Est. time: 3 to 6 months, 30+ hrs/week

Hello, My name is Nitin, and I’m an Indian entrepreneur seeking a highly skilled React Native developer to work on my in-house projects as well as client projects. I’m looking for an expert-level developer who can deliver high-quality mobile applications for Android and iOS platforms. If you have significant experience in React Native development and are interested in a long-term collaboration, I’d love to discuss further details with you. Responsibilities 1. Assist in launching mobile applications for iPhone and Android devices. 2. Help with the development and launch of iPad and Android tablet applications. 3. Work on launching an Android TV application. Selection Process To assess your coding quality and approach, I will assign a 1–2-page sample application task as part of the selection process. Please apply only if you are willing to complete this round. Looking forward to working with a passionate and talented developer!

TypeScriptSwiftKotlinAndroidReact NativeiOS
View job
  • Entry Level
  • Fixed price
  • Est. budget: $110.00

Hallo! My name is Marie, I will be glad to meet you! I'm looking for a freelancer with experience publishing applications, with a console. I will be grateful to tell you more about my task, do not hesitate to contact me.

AndroidSmartphoneAndroid App DevelopmentMobile App DevelopmentGame DevelopmentNative App DevelopmentMobile GameKotlinJavaSearch Engine Optimization
View job
  • Expert
  • Fixed price
  • Est. budget: $300.00

Job Description: We are looking for a skilled mobile app developer to build a native app for Android and iOS, featuring 15-20 screens. The app will include essential features with a focus on usability and performance. This project is ideal for developers experienced in creating high-quality native mobile applications. Scope of Work: Development Platforms: Android: Native development using Kotlin or Java. iOS: Native development using Swift. Features Required: User Authentication: Sign up/Sign in options (email, Google, Apple). Data Management: Input forms, lists, and detailed display screens. Push Notifications: Timely updates and alerts. Offline Functionality: Data sync capabilities for seamless use without an internet connection. Navigation: Tabs, modals, and deep linking. User Settings: Profile creation and management. Design: Ready-to-use modern UI/UX designs will be provided. Ensure adherence to platform-specific guidelines: Material Design for Android and Apple’s HIG for iOS. Requirements: Proven experience in native Android and iOS app development. Expertise in API integration and data management. Proficiency in implementing push notifications and offline-first app functionality. Strong skills in translating UI/UX designs into functional features. Familiarity with app deployment on Google Play Store and Apple App Store. Deliverables: Fully functional native Android and iOS apps with all required features. Well-documented source code. Assistance with app store submission. A user manual or testing guide. Additional Details: Budget: $300. Timeline: Delivery expected within 2-3 weeks(Need Urgently) Resources Provided: API documentation, backend access, and finalized designs. Bonus Points: Experience with app scaling, analytics integration (e.g., Firebase), and crash reporting tools is highly desirable. If you have experience building similar apps, we’d love to hear from you. Please share your portfolio or examples of relevant projects!

iOSAndroidMobile App DevelopmentPayment FunctionalityChat & Messaging SoftwareReview or Feedback Collection
View job