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We are building Sama, a premium realtime 1-to-1 audio social platform focused on: expert discovery realtime matching monetized audio communication wallet & billing systems scalable social infrastructure This is a serious long-term startup project — not a basic MVP. We are looking for an experienced full-stack development team or agency with strong expertise in: Flutter WebRTC Node.js / TypeScript Realtime systems Redis PostgreSQL Scalable backend architecture Premium mobile UI/UX The product architecture is designed to support future expansion into: video calling group rooms live streaming creator ecosystem features --- Core Features Required Authentication Mobile OTP login JWT authentication Session/device management Rate limiting & abuse prevention User Profiles Profile creation/editing Profile images Bio & nickname Language preferences Online/offline states Expert/Host System Expert onboarding Voice verification upload Admin approval workflow Verification badges Per-minute pricing Discovery & Matching Expert listings Filters by category/language Ratings & pricing display Realtime availability Random matching Instant connect flow Wallet & Payments Recharge system Cashback/rewards Transaction history Ledger-based wallet Realtime balance updates Commission system Realtime Audio Calling WebRTC-based audio calling Low latency Reconnect handling Call timer Call history Mute/unmute Auto disconnect on low balance Realtime Billing Server-authoritative billing Per-minute charging Auto wallet deduction Fraud prevention Ledger reconciliation Ratings & Reviews User reviews Ratings after calls Reputation system Notifications Push notifications Missed calls Recharge alerts Activity notifications Admin Panel User management Expert moderation Wallet monitoring Fraud detection Realtime analytics Reports & abuse handling --- Preferred Tech Stack Frontend Flutter Modular scalable architecture Premium animations Production-grade UI Backend Node.js + TypeScript NestJS preferred Event-driven architecture Scalable APIs Infrastructure PostgreSQL Redis WebRTC Coturn/TURN server Docker Cloudflare --- Important Requirements We are NOT looking for: beginners low-quality UI template-based apps basic Firebase-only solutions We ARE looking for: scalable architecture realtime expertise production-grade engineering premium mobile experience clean codebase long-term collaboration --- Deliverables Flutter mobile app Backend APIs Realtime infrastructure Admin panel Deployment setup CI/CD Documentation Production deployment support Full source code ownership --- Experience Required Please apply ONLY if you have experience with: WebRTC apps audio/video calling systems realtime matchmaking scalable backend systems wallet/payment systems Flutter production apps When applying, include: 1. Similar projects 2. Architecture approach 3. Team structure 4. Estimated timeline 5. Tech stack recommendation 6. Infrastructure scaling strategy --- Budget Open to: Fixed price OR Milestone-based engagement Priority is quality and scalability over cheapest cost. --- Skills Flutter, WebRTC, Node.js, NestJS, Redis, PostgreSQL, [login to view URL], Docker, DevOps, Realtime Systems, Mobile App Development, Backend Development, UI/UX The design and functionality should be similar to the Connecto app.
Project ID: 40450116
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Active 6 days ago
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30 freelancers are bidding on average ₹123,442 INR for this job

I'm Jaimish, a seasoned Full-Stack Developer with over a decade of experience designing and deploying intricate web and mobile applications. I've worked on numerous projects involving the exact technologies you desire such as Realtime Systems, Redis, PostgreSQL and more. Fluent in both Flutter and WebRTC, I have an excellent grasp on UI/UX design critical to your project's success. My proficiency extends beyond just coding. I possess the foresight necessary to build scalable backend architecture ensuring your platform can cater to future expansions including video calling, group rooms, live-streaming, and creator features. I understand you want a premium audio social platform -thus not only prioritizing clean codebase but production-grade UI through my use of AngularJS, PostgresSql for easy query and fast retrieval. Client satisfaction drives me; and my 98% on-time delivery record speaks for itself. My broad experience ensure that I can not only build your product to your required specifications but also provide valuable insights to make smarter industry-oriented decisions during the process while saving money as stipulated in my architecture approach and tech stack recommendation. You can trust me to deliver a high-quality product that matches your vision efficiently. Let's discuss your project; together, we will build something incredible!
₹120,000 INR in 20 days
4.5
4.5

I am Ishan, a seasoned web developer with over a decade of experience in technology and project delivery. I have a proven track record of creating high-quality applications that prioritize performance and user experience - two essential aspects for your premium audio platform, Sama. I bring with me deep experience in several technologies mentioned in your project description, including Flutter, WebRTC, Node.js, TypeScript, Redis, PostgreSQL - all the vital components for building Sama. In terms of architecture, I leverage event-driven approaches to establish scalable APIs that support real-time systems. For example, I've utilized NestJS in many projects which streamline backend operations in harmony with my expertise in Docker and realized a cloud-native production environment. Through such proven scalable strategies, I understand the vital importance of infrastructure scaling and ensuring system efficiency while addressing user needs. My meticulousness extends even beyond final product delivery; I offer thorough documentation of the entire system coupled with deployment support post-development ensuring you have full ownership and autonomy. Overall, when it comes to executing complex projects like Sama with demanding functionalities like live streaming and audio communication – I'm best suited to make your vision a reality.
₹112,500 INR in 7 days
3.5
3.5

Hi there, With my diverse range of skills in software development and deep experience in Flutter, Node.js, PostgreSQL along with my focus on scalable architecture and backend systems, I am confident of delivering a premium platform like Sama. My familiarity with WebRTC and realtime audio calling will ensure we have a robust and low latency solution. Building wallet and billing systems for secure transactions using PostgreSQL and Redis is another area where my expertise will shine. To create a scalable social infrastructure, I plan to utilize the flexibility of Node.js along with NestJS and the power of Docker to enable effective event-driven architecture. In dealing with your project's future needs, I can expand the system effortlessly into video calling, group rooms, live streaming and creator ecosystem features. My understanding of DevOps and Infrastructure as Code (IaC) seeks to ensure we are development-ready by providing template-based cloud setups using technologies such as Kubernetes for scalability.
₹112,500 INR in 3 days
3.7
3.7

✅✅✅ Hello there ✅✅✅ I am excited about the opportunity to work on building Sama, a premium realtime audio social platform. With my team's expertise in Flutter, WebRTC, and Node.js, we are well-equipped to deliver a high-quality solution that meets all your requirements. Our team has successfully developed similar projects in the past, focusing on WebRTC apps and scalable backend systems. Our architecture approach involves building a modular and scalable system with a strong emphasis on real-time capabilities and a premium mobile UI/UX experience. For this project, we propose using Flutter for the frontend, Node.js with NestJS for the backend, and incorporating PostgreSQL, Redis, and WebRTC for the infrastructure. Our infrastructure scaling strategy includes Docker and Cloudflare for seamless deployment and scalability. With a dedicated team structure comprising experienced developers, designers, and QA specialists, we are confident in delivering the project within the estimated timeline while ensuring clean codebase and production-grade engineering standards. We are committed to providing full documentation, deployment support, and ensuring full source code ownership. Our focus is on quality and scalability, and we prioritize delivering a premium product over cost considerations. Let's collaborate to bring Sama to life and create a successful long-term partnership. Looking forward to discussing further details with you. Ihsan Faridi
₹112,500 INR in 7 days
2.7
2.7

Hi, I can help with building Sama’s premium realtime 1-to-1 audio calling and expert matching with server-authoritative per-minute billing and a scalable Node/Flutter backend. I’d start by validating the WebRTC call flow, wallet/ledger, and abuse controls, then set up milestone architecture and early infra smoke tests. Questions: which Flutter state/UI approach do you prefer, and what payments provider should we use?
₹75,000 INR in 3 days
1.5
1.5

Pune, India
Member since Feb 28, 2023
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