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I need an Android GSM app that stays always running and connects to my [login to view URL] web app to stream real-time audio both ways. Flow: - Website connects to Android phone over Wi-Fi - Android phone makes / receives real GSM calls (SIM) - Call audio is streamed to the website - Website audio is injected into the live GSM call - Full-duplex, low-latency audio. Requirements: - Android app in Kotlin - Foreground service, auto-start - GSM call control + audio routing - WebRTC for real-time audio - Node.js / signaling integration - Asterisk knowledge is a big plus Stack Web: [login to view URL], Node.js, TypeScript (my side) Android: Kotlin, WebRTC VoIP: WebRTC, possibly Asterisk Notes: This is not a VoIP app It’s a GSM ↔ Web audio gateway You’ll work alongside me (I handle web/backend) Repo (prototype): [login to view URL]
Proje No: 40077165
13 teklifler
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13 freelancer bu proje için ortalama €70 EUR teklif veriyor

Hello Dear! I write to introduce myself. I'm Engineer Toriqul Islam. I was born and grew up in Bangladesh. I speak and write in English like native people. I am a B.S.C. Engineer of Computer Science & Engineering. I completed my graduation from Rajshahi University of Engineering & Technology ( RUET). I love to work on Web Design & Development project. Web Design & development: I am a full-stack web developer with more than 10 years of experience. My design Approach is Always Modern and simple, which attracts people towards it. I have built websites for a wide variety of industries. I have worked with a lot of companies and built astonishing websites. All Clients have good reviews about me. Client Satisfaction is my first Priority. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication You are cordially welcome to discuss your project. Thank You! Best Regards, Toriqul Islam
€20 EUR 1 gün içinde
5,0
5,0

Yes, we’ve successfully completed the same projects before and are confident we can deliver this one with the highest quality and within your timeline. We specialize in this type of work and would love to discuss your requirements in detail to ensure a smooth and timely delivery.
€19 EUR 7 gün içinde
5,5
5,5

I bring 13 years of professional experience delivering high-quality results. I have strong expertise in all the required skills listed for this project. My approach ensures accuracy, clear communication, and timely delivery. I am confident I can exceed your expectations with efficient, reliable work. Looking forward to contributing to your project—ready to begin immediately.
€19 EUR 7 gün içinde
2,3
2,3

Hi Nikita, I’m Larasati, and I’m excited about building an Android GSM ↔ Web audio gateway with Kotlin. Android GMS Kotlin Integration is a project I can approach with a clear, engineering-driven mindset. I’ve worked on similar systems before and I understand how to design a clean, reliable solution from start to finish. From your description, here’s how I would approach it: first, I’d pin down data sources, constraints, and required outputs. Then I’d implement a stable Android foreground service with auto-start, robust GSM call control and audio routing, and a low-latency WebRTC path. On the web side I’d coordinate signaling with Node.js and TypeScript, ensuring clean state handling, logging, and retries. I’d structure the Kotlin modules for testability and maintainability, and provide end-to-end testing to keep the gateway predictable. I’ve published several Android apps on Google Play, and I’m comfortable delivering tight UI, stable builds, and fast iteration cycles. I’ll tailor the architecture to minimize latency and battery impact while keeping the system resilient. If you’re open to it, I’d like to ask one quick question so I can tailor the solution more precisely: What end-to-end latency target are you aiming for for real-time audio, and are there any deployment constraints (region, carrier, or device power policies) I should design around? Looking forward to discussing more. Best regards, Larasati
€25 EUR 1 gün içinde
1,9
1,9

Hi Nikita, I’m excited about the opportunity to work on your Android GMS integration project. I’ve carefully reviewed the requirements and understand the importance of creating a robust app that facilitates real-time audio streaming and GSM call management. With extensive experience in Android development using Kotlin, I have successfully implemented similar solutions that involve WebRTC for low-latency audio processing. My strong grasp of foreground services ensures the app will remain active and responsive in the background, meeting your need for auto-start functionality. Additionally, I have a solid background in GSM call control and audio routing, which I believe aligns perfectly with your project goals. I’m ready to dive into this and suggest we kick off the project right away. Let’s discuss the next steps and your expectations. Best regards,
€30 EUR 30 gün içinde
0,0
0,0

Hi there We would like to grab this opportunity and will work till you get 100% satisfied with our work. Please come over chat and discuss your requirement in a detailed way. Thank You
€30 EUR 7 gün içinde
0,0
0,0

Hamburg, Germany
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