Talksy
Low-Latency WebRTC Voice Calling Engine | Nduat Masti Pvt. Ltd.
Talksy is a high-performance voice calling engine developed during my tenure as a Full-Stack Mobile & DevOps Engineer at Nduat Masti Pvt. Ltd. The project focused on delivering seamless, real-time communication for mobile users under varying network conditions.
Technical Architecture
- WebRTC (P2P Mesh): Engineered a low-latency voice engine leveraging WebRTC for peer-to-peer data streaming.
- Network Traversal: Customized STUN/TURN (coturn) traversal and WebSocket signaling to guarantee call setup times under 200 milliseconds.
- Serverless Scale: Architected a highly scalable, event-driven serverless backend using Firebase Cloud Functions, Node.js microservices, and Redis Pub/Sub.
- Cost Efficiency: The backend successfully supported 55,000+ active users at a near-zero idle compute cost.
Quality & Release Management
Ensuring stability at this scale was critical. I spearheaded the end-to-end Android release management on Google Play Console, heavily utilizing staged rollouts and internal track distributions.
- Maintained a 99.4% crash-free rate monitored via Android Vitals.
- Built robust automated testing suites using JUnit, MockK, and Espresso UI tests.
- Orchestrated a GitHub Actions CI/CD pipeline for automated linting, test coverage, and signed AAB generation.