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I’m building a custom Android application whose entire business logic will flow through remote APIs, and I need someone who can own both sides of that interaction. On the mobile front, you’ll craft a clean, responsive Android app (Java ) that consumes the endpoints I provide. On the tooling front, I rely on POSTMAN for every stage of the back-end integration, so your day-to-day will include importing the collection, refining environments, and, most importantly, running the automated test suites inside Postman to make sure each call performs exactly as expected. The scope is straightforward: create the app screens, hook them up to the API, then validate the whole flow by executing and, where needed, extending my existing Postman tests. If you’re comfortable living in both Android Studio and Postman, we should be a great fit.
Projektin tunnus (ID): 40151899
38 ehdotukset
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Hi there, I am an experienced Android developer with a strong background in Java and API integration. I am excited about the opportunity to work on your project involving the development of a custom Android application and enhancing Postman tests for API interactions. My expertise in crafting responsive Android apps and conducting thorough testing using Postman aligns perfectly with your requirements. I am confident in my ability to deliver a high-quality solution that meets your needs. Let's discuss how I can contribute to the success of your project. Please review my portfolio for a glimpse of my previous work: 1. [login to view URL] 2. [login to view URL] 3. [login to view URL] 5. [login to view URL] Looking forward to potentially collaborating with you. Best regards, Dharmik
₹7 000 INR 7 päivässä
6,3
6,3
38 freelancerit tarjoavat keskimäärin ₹9 750 INR tätä projektia

Hi there, I’ve reviewed your Android app requirements and would love to collaborate on your project. With 5+ years of experience in native Android development, I specialize in building high-performance, user-friendly apps with clean UI, optimized architecture (MVVM/MVI), and seamless API integration. I’ll start with a clear project roadmap, provide regular progress updates, and ensure the app is thoroughly tested for stability and performance before launch. Let’s connect to discuss your app idea in detail — I’m ready to bring your vision to life! Best, Bhargav Android Developer | Kotlin & Java Expert
₹12 000 INR 3 päivässä
6,9
6,9

Hello Client, Greeting of the day!!!! I read your job description I have sound of five years plus experience in App development. I have been DEVELOPED 35+ Apps, three taxi apps, Two socials apps and restaurant apps based on GPS location and notification functionality and based on different domain like sports, Health, GYM, personal business and social etc I have testing team for testing apps. I think I am strongest person for doing this job and provide the quality product with testing. I am always available for your support. Thanks Sr. Mobile Developer
₹12 500 INR 10 päivässä
6,6
6,6

I can handle both sides of this smoothly. I have solid experience building clean Android apps in Java and integrating them with API-driven backends, as well as working extensively with Postman for collections, environments, and automated test execution. I’m comfortable wiring app screens directly to your endpoints, validating each flow through Postman tests, and extending those tests when needed to ensure everything behaves exactly as expected. If you’re looking for someone who can work confidently in both Android Studio and Postman, I’d be a strong fit.
₹11 000 INR 1 päivässä
5,5
5,5

Hi, I hope you’re doing well. I’m interested in your Android application project and confident I’m a strong fit for both the mobile and API integration sides. I have 5+ years of experience in native Android development using Java, building clean, responsive apps whose entire logic is driven by remote APIs. On the Android side, I can design and implement the required screens, connect them efficiently to your endpoints, handle error states, and ensure smooth performance across recent Android versions. I follow clean architecture principles to keep the app maintainable and scalable. On the integration side, I regularly work with Postman for API validation. I’m comfortable importing collections, managing environments, debugging requests, and running automated test suites to verify that every API call behaves as expected. I can also extend or refine existing Postman tests where needed to ensure full coverage of the app flow. I’m comfortable working daily in both Android Studio and Postman, and I value clear communication and reliable delivery. I’d be happy to review your APIs and Postman collection and get started right away. Looking forward to working together. Best regards, Maisam Raza Android Developer
₹7 000 INR 7 päivässä
5,2
5,2

Having been in the industry for over a decade, I have developed a versatile skill set with expertise in mobile app development, precisely Android applications using Java. I understand the magnitude of your project; building a comprehensive Android app that integrates seamlessly with remote APIs is no small feat. Nonetheless, I assure you my familiarity with POSTMAN will make the process remarkably easier. At Prajapati Technologies, we value our clients' satisfaction and success above all else. By working closely with you, I'll ensure your app crafted with clean and responsive screens will not only consume your provided endpoints effectively but also undergo rigorous testing. Speaking of which, your reliance on POSTMAN for backend testing aligns perfectly with my years of experience executing and refining automated test suites within this very tool. In the past, my dedication to producing quality work while offering prompt suggestions has garnered me a great reputation as reflected in my top-rated profile. With me, you're guaranteed fast turnaround and unrestricted availability 7 days a week. Choosing me would not just mean hiring an experienced freelancer, but entrusting your project to someone who genuinely understands its importance and has proven abilities to deliver success. Thank you for considering my proposal. I await the opportunity to exceed your expectations on this project.
₹12 500 INR 7 päivässä
4,5
4,5

I have strong experience building Android applications in Java where all business logic is API-driven. I’ll develop a clean, responsive Android UI and integrate all provided REST APIs correctly. I’m very comfortable working with Postman—importing collections, managing environments, and running/extending automated tests. I’ll validate every API flow using Postman test suites to ensure requests, responses, and edge cases behave as expected. Development will be handled cleanly across Android Studio + Postman, with clear, maintainable code. You’ll get a fully functional app with verified API interactions and a reliable end-to-end flow.
₹12 500 INR 4 päivässä
4,4
4,4

Hi, I’d be happy to help with building your Android application and handling the full API integration workflow through Postman. I’m comfortable working in both Android Studio (Java) and Postman—consuming endpoints, managing environments, and validating flows using automated test suites. Before I provide an accurate timeframe and cost estimate, could you please clarify a few points? Does the Android app need to be developed from scratch or is there an existing codebase? Do you already have the UI design ready (Figma/XD or similar)? Approximately how many screens are involved? Is there a wireframe or flow diagram available to understand the user journey and project size? Once I review these details, I can outline a clear development plan covering screen implementation, API integration, and Postman test validation along with a realistic budget and timeline. Looking forward to your response. Best, Param
₹7 000 INR 7 päivässä
4,5
4,5

Hi, Android app with API integration and Postman testing - this is exactly how we work. Comfortable with both Android Studio and Postman for the complete development and testing workflow. Can build clean responsive Android screens in Java, hook them up to your APIs, and run your Postman test suites to validate the integration. Extending test collections where needed is part of the process. Let me know if you want to discuss the scope further. Regards, Raj
₹10 000 INR 7 päivässä
4,1
4,1

I can build your Java Android app with a clean UI and make sure every screen is fully driven by your remote APIs, with Postman validation as part of the delivery. I understand the job is two-sided: implement the mobile app that consumes your endpoints, and own the integration testing using your existing Postman collection (environments, variables, auth flows, and automated test runs). I’ll start by reviewing the API docs/collection, then build the app screens with proper state handling (loading, empty, error), pagination if needed, and secure token storage. In parallel, I’ll run and extend Postman tests to validate status codes, response schemas, and business rules so the app behavior stays consistent. You’ll get stable builds, clear code structure, and an integration report.
₹10 000 INR 10 päivässä
4,4
4,4

Hi, I can take full ownership of both the Android app development and the API integration workflow, working comfortably across Android Studio and Postman. I have 11.5+ years of Android development experience and have worked extensively on API-driven Android applications where all business logic lives on the backend. I regularly use Postman for API validation, environment management, and automated test execution. How I’ll work: Build a clean, responsive Android app in Java Implement screens and flows based entirely on your provided APIs Import and configure your Postman collections and environments Execute existing Postman automated tests to validate each endpoint Extend or refine Postman tests where needed to cover edge cases Ensure request/response handling in the app matches tested API behavior What you’ll get: Well-structured Android code with clear separation of concerns Stable API consumption with proper error handling Postman test results confirming end-to-end flow correctness Clean integration with no hidden logic on the client side Why I’m a good fit: Strong experience with REST APIs, JSON parsing, auth flows Comfortable switching between Android Studio and Postman daily Methodical, test-driven approach to backend-dependent apps I’m ready to get started immediately and can adapt quickly to your API structure and Postman setup. Looking forward to working together. Aman
₹11 000 INR 10 päivässä
3,6
3,6

Hello, Team Velora has been running for 3 years, and our experienced developers can build your custom Android app in Java, fully integrated with your APIs. We will create clean, responsive screens, connect them to your endpoints, and validate all flows using your Postman test suites to ensure everything works flawlessly. Please come into the chat so we can discuss your Postman collections and get started immediately.
₹9 000 INR 4 päivässä
3,5
3,5

Hello, I’ve carefully reviewed your project requirements and clearly understand the tasks involved. I have 13 years of experience and strong expertise in the exact skills this project requires. I have successfully delivered similar projects before and can share relevant samples if needed. I will complete this within your expected timeline while maintaining quality and clear communication. I look forward to working with you and contributing sincerely to your project’s success.
₹7 000 INR 7 päivässä
3,1
3,1

I’ve built Android apps in Java where all the logic comes from backend APIs, so I’m comfortable creating clean screens and wiring them directly to the endpoints you provide. I also work a lot with Postman in my day-to-day work — importing collections, setting up environments, and running or updating automated tests to make sure everything behaves as expected. I’m comfortable switching between Android Studio and Postman, owning the full flow from app screens to API validation. Happy to take a look at your APIs and Postman collection and get started.
₹7 000 INR 7 päivässä
2,0
2,0

Hi there, We can build a clean, stable Android app in Java that consumes your remote APIs end-to-end, with every screen tightly mapped to the provided endpoints. Alongside app development, we’ll actively work in Postman importing collections, managing environments, and running or extending automated test suites to validate each API flow. The focus is a reliable mobile experience backed by thoroughly tested integrations and predictable behavior. With 10+ years of Android and API integration experience, we’re comfortable working daily in both Android Studio and Postman. Let’s connect and review your API collection and screens to get started. Regards, Ekakshnex Pvt Ltd.
₹12 500 INR 7 päivässä
1,7
1,7

Hello, Hope you are doing well. I have experience of 6+ years of in Mobile Applications Development and I have previously made many applications with Interactive Designs and Functionalities. I have reviewed your requirement. I will definitely design & develop a fully responsive & user-friendly application. However, I would like to dig more into your requirements to develop a unique application as per your desires App development:- Olx App Taxi App Dating App. Educational App Multivendor App. Hotel and Restaurant Booking App. Doctors/ hospital management App. Please have a look at my portfolio link : https://www.freelancer.com/u/khushiArt Best Regards Khushbu
₹6 500 INR 7 päivässä
0,0
0,0

Having worked extensively as a full-stack developer for the past three years, I have gained solid experience not only in building Android applications but also in creating and refining APIs. This has put me in a unique position to appreciate both the front and back-end aspects of this project. I am confident that my skills in implementing APIs, integrating them with mobile applications, and developing in Java will enable me to successfully fulfill your project's requirements. Moreover, my proficiency in POSTMAN is noteworthy here. I understand how crucial every aspect of testing is especially when a business's logic relies heavily on remote APIs. From importing collections to refining environments and running automated test suites with precision, you can count on me to ensure each call performs exactly as expected. Overall, my goal aligns perfectly with yours; I aim to provide clean code, efficient solutions, and reliable results while maintaining excellent communication and adhering to project timelines. Let's work together to create a solid Android app with impeccable Postman tests for your business needs!
₹5 000 INR 3 päivässä
0,0
0,0

Hi there! I read your project requirements and I am perfectly comfortable with the scope. I specialize in building clean Android applications in Java that rely heavily on remote APIs for business logic. Here is exactly how I will handle your project: Postman Validation: I will start by importing your Postman collection and running the test suites to understand the expected behavior of every API call. Android Development: I will build responsive, native Android screens and integrate your endpoints using standard libraries (like Retrofit) to ensure smooth data flow. Quality Assurance: I will ensure the app handles all API success, failure, and loading states gracefully, mirroring the logic defined in your Postman tests. Quick Clarification to ensure smooth delivery: Is the app purely based on REST API interactions (fetching/displaying data), or does it require any specific device hardware access (like Bluetooth, NFS, or Background Location)? I am ready to start immediately. Let's discuss the number of screens and get this started! Best regards
₹10 000 INR 15 päivässä
0,0
0,0

Hi, This project fits well with my experience working on API-driven Android applications where the app logic lives entirely on the server side. I’m comfortable building clean, responsive Android apps in Java, wiring each screen directly to provided API endpoints, and handling authentication, request/response parsing, and error states cleanly. On the integration side, I regularly work with Postman collections and environments, using them not just for manual testing but for running and extending automated test suites to validate end-to-end flows. My approach would be: Build the required Android screens in Android Studio Integrate all API calls using your existing endpoints Import and configure your Postman collection and environments Execute and refine Postman tests to confirm each API call behaves as expected Validate the full mobile → API flow before delivery I’m comfortable switching between Android Studio and Postman daily and keeping both sides in sync as changes are made. Happy to review the API docs and Postman collection and get started. Best regards, Yogesh
₹7 000 INR 7 päivässä
0,0
0,0

Hey This is a good fit for me. I’ve got 7+ years of experience working on API-driven mobile apps, and I’m very comfortable building Android apps in Java where all business logic lives on the backend. I’ve integrated complex APIs before and regularly use Postman for validating endpoints, managing environments, and running/expanding automated test suites to make sure nothing breaks as flows evolve. I can handle the full loop—designing clean, responsive screens in Android Studio, wiring them to your APIs, and validating every request/response through Postman so the app behaves exactly as expected. I’m detail-oriented with API contracts and error handling, which really matters in setups like this. Quick question: are the API specs and Postman collection already finalized, or should I expect some iteration while implementing the app?
₹1 500 INR 7 päivässä
0,2
0,2

Hello Sir, I can build your custom Android app in Java, creating clean, responsive screens and connecting them to your remote APIs. I’m comfortable working end-to-end, including Postman collection imports, environment setup, and running/extending automated tests to ensure each API call works flawlessly. Note: Since the project spans both app development and API validation, I recommend discussing workflow and testing approach upfront for smooth delivery. Please come to the chat box so I can share relevant Android/API projects and align on the implementation plan.
₹9 000 INR 7 päivässä
0,0
0,0

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