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My Android VPN app is already live in the store, but it currently relies on a legacy tunneling method. I now want to embed V2Ray support—specifically the Vless protocol—directly in the client. I will supply the working server-side Vless configuration files; your job is to wire those settings into the app, compile a new build, and prove that a device can connect all the way through to the target destination. The codebase is Kotlin with the usual Android-Studio setup and a basic Material interface. You may adapt any open-source v2ray-core or client libraries that fit, as long as the final APK meets Play Store policies and runs on Android 8+. Once integrated, I need to see the handshake succeed, data flow confirmed by reachable websites, and the logcat or internal logger showing a clean tunnel without crashes or memory leaks. Deliverables: • Updated project source with Vless handling baked in • Signed debug APK for testing plus a short screen-capture or log proving a successful connection • A concise note on any new permissions or Gradle changes so I can push the production build later If this sounds straightforward for you and you have prior V2Ray or Vless experience on Android, let’s get started right away.
Project ID: 40497418
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Hey there, Wiring Vless into an existing Kotlin VPN app is pretty straightforward if you've done it before — I'd pull in v2ray-core as a library, hook your supplied server configs into the tunnel logic, and get you a signed debug APK with logcat showing a clean handshake and live data flow. Done a couple of these V2Ray Android integrations before so I know the Gradle and permission changes needed to keep it Play Store-friendly. Let me know if you want to kick things off here in the messages.
$30 AUD in 1 day
4.0
4.0
78 freelancers are bidding on average $142 AUD for this job

Hi, you already have a live Android VPN client, which means the work here is less about UI and more about safely replacing a transport layer inside an existing Kotlin app without destabilizing the shipping build. The real engineering risk is not the handshake itself; it is making Vless behave cleanly inside the app lifecycle so tunnel startup, routing, reconnects, and teardown remain stable on Android 8+ under Play Store constraints. I’ve built several production systems by entering an existing codebase, mapping the current control flow, and isolating the integration points before changing behavior. That is usually the right approach when a live app already has a working legacy path. The closest examples in my background are Custom Feature Development & Integration, where I extended a live product with targeted functionality and hand-off documentation, and TikTok AI Livestream Setup, where I validated end-to-end connectivity and runtime stability across a real-time pipeline. I would typically separate tunnel configuration parsing, session lifecycle management, and connection verification so the Vless path can be tested independently from the Material UI layer. That keeps the APK easier to validate and reduces regressions in the existing client. If useful, I can first map the current tunnel flow and identify the exact insertion points for Vless handling, logging, and connection proof. Thanks, Hercules
$140 AUD in 7 days
6.9
6.9

Hi, I can integrate V2Ray Vless support into your existing Kotlin Android VPN app, wire in your server configuration, update the required Gradle or permission changes, and provide a signed debug APK for testing. I’ll focus on a clean implementation that works on Android 8+, confirms handshake and traffic flow, and includes logs or a short proof of successful connection. I’m comfortable working with Android Studio, Kotlin, VPNService flows, and open-source tunnel client libraries. Best regards, Zeeshan Ali
$140 AUD in 7 days
7.1
7.1

Hi, I've integrated VPN protocols into Android apps before. Your app needs Vless support added to replace the legacy tunneling—we can handle the implementation and testing in Android Studio without breaking your live version. Message me to discuss. Best Regards, Hasan
$200 AUD in 7 days
6.7
6.7

Hi there, ★★★ Kotlin / Android Development Expert ★★★ 7+ Years of Experience ★★★ I can integrate V2Ray support with the Vless protocol into your existing Android VPN app, ensuring a seamless connection to the target destination. This will include: - Wiring the provided Vless configuration files into the app. - Compiling a new build and testing for successful connections. - Providing a signed debug APK and documentation on any new permissions or Gradle changes. I will handle the integration using Android Studio, ensuring compliance with Play Store policies and thorough testing to confirm functionality. Ready to start once you provide the server-side Vless configuration files and any specific requirements for testing. Thanks!
$160 AUD in 3 days
6.4
6.4

With over 8 years of experience specializing in Android app development, I am confident that I am the right fit for your Android VPN Vless integration and testing project. My expertise includes working with the Kotlin codebase and Android Studio - the very tools you're using for your app - ensuring a seamless integration process. My deep technical understanding of not only Java and Kotlin but also Dart and Flutter (for cross-platform apps) will also be an asset in this project, as I will be able to adapt any necessary open-source client libraries that meet Play Store policies without sacrificing on the functionality. In addition to my technical skills, my commitment to clear communication, timely delivery, and ongoing support ensures that I will not only complete all the deliverables effectively but also address any concerns or requirements you might have throughout the process. Together, we can make your Android VPN app more secure and robust through V2Ray Vless integration, helping your users enjoy a faster, safer VPN experience on their devices all while meeting Play Store guidelines. Let's bring your vision to life!
$250 AUD in 6 days
6.2
6.2

Hello There!!! ★★★★ (Vless integration into existing Android VPN app with testing and stable production-ready APK build) ★★★★ Project understanding: client already has a Kotlin based Android VPN app live on Play Store. You need Vless (V2Ray) protocol integrated by replacing legacy tunneling, using provided server configs, and ensure end-to-end connection works with proper logs and stable performance. Services ⚜ Integrate V2Ray/Vless core into existing Kotlin Android app ⚜ Configure and map provided Vless server settings correctly ⚜ Ensure stable handshake, routing and traffic flow testing ⚜ Build signed debug APK and test connection success proof ⚜ Logcat analysis and debugging for clean tunnel behavior ⚜ Ensure Android 8+ compatibility and Play Store policy safety ⚜ Update Gradle, permissions and optimize performance Approach: I will adapt proven v2ray-core modules, integrate configs, test live device routing, fix crashes or leaks if any, and validate full connectivity with logs and screenshots. code will be clean but sometime small grammar miss in docs. Looking forward to start and discuss details. Warm Regards, Farhin B.
$101 AUD in 1 day
6.6
6.6

Hello, As a veteran in the mobile app development industry, my team and I at Our Software are well-versed in building and enhancing Android apps for businesses. I understand that you're looking to update your existing VPN app by incorporating Vless functionality efficiently. Undeniably, my proficiency in Kotlin with the Android Studio will be an asset for your project. Moreover, we hold extensive experience in maintaining utmost security of VPN network by deploying strong encryption protocol as per client demand. In fact, we have prior experience working with V2Ray and Vless on various Android apps, so we're familiar with their implementation nuances and can ensure that your app meets Play Store policies while operating seamlessly on Android 8 and above. Rest assured, your project is neither too big nor too small for us. We take pride in providing a personalized touch to each project and ensuring top-notch customer service. Once I'm done integrating the Vless handling into your app, I'll deliver the updated source code, signed debug APK along with a log of successful connection and concise notes on any new permissions or Gradle changes that were necessary. So trust us not just to meet but exceed your expectations with our innovative solutions tailored to your demands. Reach out today and let's turn your dreams into reality! Thanks!
$130 AUD in 2 days
6.2
6.2

With experience in Android app development and integration, I understand your need to embed V2Ray support, specifically the Vless protocol, into your existing VPN app. I have successfully implemented similar protocol integrations in past projects, enhancing app performance and user experience. How critical is the need for real-time monitoring of data flow during the testing phase? Regards, Yogesh Kumar
$110 AUD in 9 days
5.3
5.3

Hello dear, Greetings from MD. Toriqul Islam! We are a dedicated Web Design & Development team with over 10+ years of industry experience. I’m Engineer Toriqul Islam, an experienced Computer Science & Engineering graduate from RUET. We specialize in building modern, scalable, and user-friendly digital solutions tailored to business needs. What I Offer We help businesses grow online by delivering: • Clean, modern, and responsive website designs • High-performance and scalable web applications • User-focused UI/UX for better engagement and conversion My Technical Expertise We work across a wide range of technologies, including: • Frontend: HTML5, CSS3, Bootstrap, JavaScript, jQuery, Angular, React • Backend: Node.js, PHP, Laravel, .NET, CodeIgniter, Ruby on Rails, Python • CMS & Platforms: WordPress • Database: MySQL, MongoDB • Mobile Development: React Native, Flutter, and more Why choose me? ✔️ Clean, optimized, and well-documented code ✔️ Reusable and scalable components ✔️ On-time delivery with complete requirement fulfillment We are confident in our ability to turn your ideas into a powerful digital product. Let’s discuss your project and make it a success. Looking forward to working with you! Best Regards, Md. Toriqul Islam
$70 AUD in 3 days
5.5
5.5

Hey! I specialize in Android VPN and network application development with 9+ years building secure, high-performance mobile connectivity solutions. Here's how I can help: - Integrate Vless support into your existing Kotlin app - Adapt proven V2Ray libraries for stable tunnel handling - Verify connections with logs, testing, and traffic checks - Deliver updated source, APK, and deployment notes Could you clarify whether your supplied Vless configuration uses TLS, Reality, or WebSocket transport, and if the current app already uses Android VPN Service APIs?
$140 AUD in 7 days
4.9
4.9

✋ Hi There!!! ✋ The Goal of the project:- INTEGRATE VLESS (V2RAY) VPN SUPPORT INTO EXISTING ANDROID KOTLIN APP WITH STABLE CONNECTION, PLAY STORE COMPLIANCE AND VERIFIED NETWORK TUNNEL FUNCTIONALITY. I carefully reviewed your requirement and understand you need Vless protocol integration into your existing VPN app with successful handshake, stable tunnel and verified connectivity. I am best fit because I have strong experience in Android VPN development, V2Ray integration and Kotlin-based networking systems. • Integrate Vless protocol using compatible V2Ray core libraries • Ensure stable tunnel connection with logging and performance validation • Generate signed APK and verify Play Store compliant build process I will provide UI integration, testing, debugging, VPN configuration support and full source code delivery. I have 9+ years experience as a full stack developer. I have completed similar VPN and V2Ray Android integration projects. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
$250 AUD in 11 days
5.0
5.0

I understand that your Android VPN app is currently limited by a legacy tunneling method and requires an upgrade to support the Vless protocol for improved performance and security. This transition can significantly enhance user experience, ensuring seamless connectivity to target destinations. With over 12 years of experience in full-stack development, particularly with Kotlin and Android Studio, I have successfully integrated various protocols into mobile applications. My expertise covers working with open-source libraries like v2ray-core, which will enable me to adapt the Vless integration effectively while adhering to Play Store policies. I will ensure that the updated project source includes Vless handling, provide you with a signed debug APK for testing, and deliver concise documentation on any necessary permissions or Gradle changes. To tailor my approach further, could you share any specific challenges you've faced during previous integrations of similar protocols?
$250 AUD in 7 days
4.7
4.7

Hello, I am interested in reviewing your Android VPN application and assessing the integration of V2Ray/VLESS support into the existing Kotlin codebase. I can analyze the current architecture, review the provided VLESS server configuration, integrate a suitable V2Ray client/core implementation, and validate end-to-end connectivity on Android 8+ devices. My focus will be on clean integration, connection stability, proper error handling, and compatibility with Play Store requirements. Deliverables can include: • Updated Android Studio project with VLESS support • Test APK for validation • Connection verification with logs and evidence of successful traffic routing • Documentation of Gradle, dependency, and permission changes • Notes on deployment considerations and future maintenance Before proceeding, I would like to review: • The existing source code • Current VPN/tunneling implementation • Sample VLESS configuration • Any specific Play Store or architecture constraints Once I review the codebase, I can confirm the implementation approach, timeline, and any potential challenges. Best regards, Zain
$250 AUD in 7 days
4.8
4.8

I understand you're looking to replace your app's legacy tunneling with Vless integration, similar to how many modern VPN clients leverage robust, efficient protocols for enhanced performance and security. My experience integrating complex networking protocols into Android applications makes me a strong candidate to ensure a seamless transition. My approach will involve leveraging a well-maintained V2Ray Android SDK or a similar open-source Vless client library. I'll focus on correctly parsing your provided server configurations, implementing the Vless connection logic within the Kotlin codebase, and ensuring robust error handling and connection management. The plan includes setting up the necessary dependencies, integrating the library, developing the UI elements for configuration input, and thoroughly testing connectivity from the client through to the target destination, validating data flow and security. Could you clarify the expected performance metrics or latency targets for the Vless connection? Also, are there any specific security considerations or compliance requirements beyond standard VLESS protocol security? I'm eager to discuss how I can efficiently integrate and validate this for your app.
$194 AUD in 21 days
4.2
4.2

Hello, I have experience with Android, Kotlin, VPN apps, and V2Ray integrations. I can add Vless support to your existing VPN application, integrate the provided server configuration, compile a test build, and verify successful connections through logs and real-device testing. I will deliver the updated source code, signed debug APK, connection proof (logs/video), and documentation for any Gradle, dependency, or permission changes. I can also help ensure Android 8+ compatibility and compliance with Play Store requirements. Ready to start immediately. Best regards.
$140 AUD in 7 days
3.8
3.8

Hey there, I'm Vishal Maharaj, an Android App Developer with 25 years of experience based in Perth, Australia. I am passionate about taking on your project involving Android VPN Vless Integration & Testing. I understand the need to embed V2Ray support, specifically the Vless protocol, into your existing Android VPN app. I would approach the project by integrating the Vless settings into the app, compiling a new build, and ensuring successful connections to the target destination. I will ensure that the final APK meets Play Store policies and runs smoothly on Android 8+ devices. Let's discuss further details in chat. Cheers, Vishal Maharaj
$250 AUD in 7 days
3.3
3.3

Hi, I’ve worked extensively on Android VPN clients in Kotlin, including integrating modern tunneling stacks like V2Ray core and customizing protocol layers such as VLESS and VMess. I understand your requirement is not just integration but a fully verifiable, stable tunnel with clean logs, successful handshake, and real traffic flow—and that’s exactly how I approach delivery. In a recent similar project, I embedded a custom V2Ray core into an existing VPN app, mapped server configs dynamically, and validated connectivity using real-world endpoints while optimizing memory usage. I’ll adapt a reliable v2ray-core library, wire your VLESS configs into the client, and ensure compatibility with Android 8+ and Play Store policies. Plan to complete: Integrate v2ray-core and configure VLESS protocol parsing Map your server configs into app logic and UI flow Implement connection lifecycle + logging (logcat & internal logger) Test handshake, routing, and real traffic validation Deliver APK + proof (logs/screen capture) + setup notes I can start immediately and move fast without compromising stability. Ready to start whenever you are. Looking forward to hearing from you soon. Best regards.
$140 AUD in 7 days
3.2
3.2

Hello, I have experience working with Android VPN applications, Kotlin, and VPN protocol integrations, and I can assist with integrating Vless support into your existing Android client. My approach would include: • Reviewing the current VPN architecture and tunneling implementation • Integrating Vless configuration handling into the existing app • Adapting a compatible V2Ray client/core library for Android 8+ • Mapping your server-side Vless configurations to the mobile client • Implementing secure connection management and reconnection logic • Ensuring compatibility with your existing Material UI workflow • Updating Gradle dependencies and project configuration as required • Testing connection establishment and tunnel stability • Verifying successful traffic routing through the configured server • Debugging connection issues and runtime exceptions • Monitoring Logcat output for errors, crashes, and memory concerns • Providing a signed debug APK for validation testing • Delivering updated source code with clean documentation • Supplying notes on permissions, dependencies, and build changes • Assisting with final production build preparation To begin, I would need access to the current Android project and the working Vless server configuration so I can evaluate the integration path and implementation requirements. I am available to start immediately and can provide regular progress updates throughout the integration process.
$140 AUD in 7 days
2.8
2.8

? BEFORE YOU HIRE ANYONE, GIVE ME 30 SECONDS TO SHOW YOU WHY I'M DIFFERENT. I recently completed a project integrating the Vless protocol into an Android VPN app, achieving a seamless connection with enhanced security and performance. I have extensive experience working with Kotlin, Android Studio, and integrating complex protocols like Vless. By adapting open-source v2ray-core, I ensure compliance with Play Store policies and Android 8+ compatibility. Understanding your goal of upgrading to Vless, I will efficiently wire the server-side configurations, perform thorough testing, and provide a flawless APK with successful handshake and data flow. The difference between an average result and an exceptional one is usually decided before the work even begins. Regards, Patrick
$150 AUD in 7 days
2.6
2.6

Hello, As a result of a detailed review of your project requirements, I fully understand the scope and expectations. I have experience handling similar types of projects and I'm available to start your project right now. I bring deep expertise in Android VPN Development, Kotlin, Java, Android Studio, V2Ray/Vless Integration, VPNService, Gradle, Testing/QA, and Android App Development with over 10 years of experience. One of the key challenges here is integrating Vless cleanly into the existing Kotlin codebase without breaking the current VPN flow or Play Store compatibility. My approach is to wire your supplied Vless server configuration into a suitable V2Ray client/core library, update the required Gradle dependencies and permissions, test on Android 8+, confirm handshake and traffic flow, and provide logcat/internal logs showing a stable tunnel without crashes or memory leaks. I have a couple of quick questions. • Which Vless transport/security settings are used in your config, such as TCP, WebSocket, gRPC, TLS, or Reality? • Do you want Vless added as the default tunnel method or kept as a selectable option beside the current legacy tunnel? I would be glad to discuss further details and am ready to start immediately. Looking forward to hearing from you. Best regards, Carlos.
$30 AUD in 5 days
2.7
2.7

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