Pargat S.

Senior Full-Stack Developer | React, Next.js, Node.js | WebRTC, XMPP & Erlang | 15+ Years I build scalable Web, Mobile, SaaS, and Real-Time Communication applications from scratch and help existing products evolve with modern, production-ready architecture. With 15+ years of experience, I can take ownership across the stack—from frontend and mobile experiences to backend services, APIs, databases, real-time communication, and cloud infrastructure. My key differentiator is the combination of modern React/Next.js development with deep expertise in WebRTC, XMPP, Erlang/OTP, SIP/VoIP, and distributed systems. This makes me particularly suited for products involving real-time messaging, video/voice calling, conferencing, high concurrency, and scalable backend infrastructure. Core Expertise Frontend: React.js, Next.js, TypeScript, JavaScript, Vue.js, Angular, MUI, Bootstrap Backend: Node.js, Erlang/OTP, Laravel, PHP, REST APIs Mobile: React Native, Swift, SwiftUI, Kotlin Databases: PostgreSQL, MySQL, MongoDB, Cassandra, Redis, Firestore Real-Time: WebRTC, XMPP, MongooseIM, Ejabberd, SIP/VoIP, WebSockets, MediaSoup, Jitsi, Twilio, Agora Cloud & DevOps: AWS, Docker, Jenkins, CI/CD, Linux, Grafana, Graphite, ELK Payments & Integrations: Stripe, PayPal, Braintree, Firebase, Google APIs, Facebook API, Adobe API, Foodics, Flight Tracking APIs I’ve worked on platforms including Comera, Eltropy, FITTR, and other enterprise communication systems, contributing to frontend applications, backend architecture, real-time messaging, WebRTC, APIs, databases, performance optimization, and production infrastructure. I focus on clean architecture, reliable implementation, scalability, and clear communication—whether you’re building an MVP, scaling an existing platform, or solving a complex technical challenge. Available 40+ hours/week for long-term or project-based work. Let’s discuss your requirements and build the right solution.