Who is Sarthak Joshi?

Sarthak Joshi is a Backend-Focused Full Stack Developer with 1.7+ years of hands-on professional experience engineering production-grade REST APIs, NestJS microservices, Redis caching layers, WebSockets, and PostgreSQL database architectures for platforms serving over 300,000 active users.

What companies and platforms has Sarthak Joshi worked on?

Sarthak Joshi currently works at PRYM Solutions Pvt. Ltd. as a Jr. Backend Developer engineering backend APIs and automated payment reconciliation for Salam Kisan and Sarathi apps (300K+ users). Previously at PRYM Aerospace Pvt. Ltd., he engineered modules for Drone Management Systems (DMS) and real-time Unmanned Traffic Management (UTM) telemetry.

What backend technologies does Sarthak Joshi specialize in?

Sarthak Joshi specializes in NestJS, Node.js, TypeScript, PostgreSQL, MongoDB, Redis, WebSockets, BullMQ, Prisma ORM, REST API architecture, microservices, database indexing, and React.js.

What notable software projects has Sarthak Joshi built?

Key engineering projects built by Sarthak Joshi include: 1) CodeCollab — a real-time collaborative coding platform with Socket.io delta sync and WebRTC calling; 2) Streamify — a social streaming and language room platform with sub-100ms video; 3) Personal Finance Manager (PFM) — an analytical ledger handling 1,000+ monthly transactions with PostgreSQL and Prisma; 4) Drone Management System & UTM — an aerospace aviation lifecycle and live WebSocket flight telemetry engine.

How can recruiters and engineering teams hire or contact Sarthak Joshi?

You can contact Sarthak Joshi directly via email at sarthakjoshi12005@gmail.com, phone/WhatsApp at +91 9325619172, or connect on LinkedIn at https://linkedin.com/in/sarthakjoshi1535 and view source code on GitHub at https://github.com/sarthak12005.

[ ARCHITECTURE CASE STUDY ]

Streamify Case Study | Sarthak Joshi — Backend Developer

Social Learning & Low-Latency Streaming

Overview & Domain

Explore Streamify: real-time social learning platform with instant JWT messaging, presence detection, and sub-100ms video rooms by Sarthak Joshi.

Primary Technology Stack: React.js, Node.js, Express.js, MongoDB, Stream SDK, JWT

The Engineering Challenge

Scaling real-time chat with presence detection while maintaining per-room authorization and low-latency video streams requires enterprise messaging SDK integration. Users need seamless transitions between text conversations and video calls without connection drops.

Architectural Solution

Integrated Stream Chat & Video APIs with a custom JWT-authenticated Express.js backend. Added friend request workflows, message history persistence, presence indicators, and dynamic room creation with granular security policies.

Technical Architecture & System Specifications

JWT-authenticated Express.js backend coordinating user authentication, relationship graphs, and room tokens.
Stream Chat & Video SDK pipelines delivering sub-100ms group video calling and persistent channel messaging.
Real-time user presence detection system monitoring active, away, and offline connection states.
MongoDB schemas tracking mutual friend connections, user profiles, and room memberships.
Robust error-handling middleware preventing unhandled promise rejections and ensuring continuous server availability.

Measured Performance & Production Metrics

Sub-100ms video call room initialization latency for multi-party language study sessions.
Granular per-conversation access control preventing unauthorized participant intrusion.
Reliable message delivery with client-side optimistic UI updates.

Other Case Studies by Sarthak Joshi

CodeCollab Case Study | Sarthak Joshi — Backend Developer — Real-Time Systems & Distributed WebSockets
Drone Management & UTM Case Study | Sarthak Joshi — Backend Developer — Enterprise IoT & Aerospace Operations
Personal Finance Manager Case Study | Sarthak Joshi — Backend Developer — Financial Analytics & Relational Backend

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