Backend Developer for Chat App Features

@rahuliitm69

Hi Sir, The approach would start by understanding your existing message, conversation, group, attachment, and call architecture, then extending it with reactions, replies, message editing/deletion, disappearing and view-once messages, forwarding, media albums, file metadata, compression handling, and background cleanup jobs. WebSocket events would keep message and privacy states synchronized in real time, while authorization and validation would be handled server-side. For calling, the backend would manage Mediasoup signaling, group-call eligibility, the 20-participant active-room limit, dynamic invitations, participant join/leave states, reconnect handling, and real-time capacity events. Race-condition protection and consistent room state would be important to prevent exceeding participant limits. The premium meeting layer would include moderator controls such as mute-all, audio/video locks, co-host management, participant removal, hand raise, screen sharing, reactions, chat, and file/media sharing. The monetization system would securely handle creator call rates, participant wallet deductions, 6% platform fees, creator earnings, hourly meeting fees, and free calls when the creator sets the rate to zero. The implementation would use modular APIs, reliable WebSocket contracts, transactional database operations, Redis/background workers, and scalable real-time architecture so the mobile team receives predictable and production-ready backend services. Best, Rahul

@ZohaibRoy

⭐⭐⭐⭐⭐ Experienced Backend Developer for Messaging and Media Features ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and noticed you're looking for an experienced Backend Developer to enhance your communication platform. Look no further; Zohaib is here to assist you! My team has successfully completed 50+ similar projects for backend development. I will implement messaging, media, privacy, and VoIP features efficiently within your budget. ➡️ Why Me? I can easily do your backend development for messaging and media features as I have 5 years of experience in Node.js, Fastify, and MySQL. My expertise includes creating REST APIs, managing WebSocket events, and handling database schema updates. I have a strong grip on real-time media processing with WebSockets and Mediasoup, ensuring smooth functionality for your platform. ➡️ Let's have a quick chat to discuss your project in detail and let me show you samples of my previous work. Looking forward to discussing this with you in chat. ➡️ Skills & Experience: ✅ Node.js ✅ Fastify ✅ PrismaORM ✅ MySQL ✅ WebSockets ✅ Mediasoup ✅ REST APIs ✅ Background Jobs ✅ Database Schema Updates ✅ Real-time Messaging ✅ Media Management ✅ Privacy & Security Policies Waiting for your response! Best Regards, Zohaib

@vashishtrupinder

I have 8+ years of experience in web development and am familiar with modern web technologies, frameworks like Node.js and other tools. Your platform needs backend work for messaging features like reactions, threaded replies, editing within 10 minutes, soft deletion, and disappearing messages with scheduled cleanup. I'll add the database schema updates, REST routes, WebSocket events, and background jobs. I'll also handle media uploads and forwarding, privacy flags, live location streaming, and Mediasoup signaling for calls and screen sharing, including group call limits and room state events. This is backend only, so your mobile team can integrate it. I can start right away.

@Herculesz

Hi, The project requires robust backend enhancements for messaging, media management, and VoIP signaling within a real-time communication platform. The main engineering risk lies in orchestrating real-time state synchronization and enforcing constraints such as participant caps and message lifecycle rules reliably. I usually structure backend systems by separating REST API logic, WebSocket event handling, and background job orchestration to maintain clarity and scalability. My experience with custom feature development on live systems has honed my skills in safely extending existing databases and APIs while ensuring maintainability. I recommend implementing strict validation layers for message edits and deletions and using event-driven mechanisms to update client state in real time. Managing ephemeral message cleanup with scalable background jobs and leveraging Redis TTL or cron jobs is critical for data consistency. Systems like this benefit from clear separation of signaling and data persistence layers, with fallback and retry logic to handle network and concurrency issues gracefully. I can help outline the backend architecture for messaging, media attachments, and VoIP signaling, ensuring the system is robust and maintainable. Thanks, Hercules

@w6d

Hi! We’ve carefully reviewed your project requirements and understand what you’re looking to achieve. Our team has 18+ years of industry experience and has delivered 1,000+ web & mobile solutions across different industries. We can handle the complete development lifecycle with a strong focus on quality, communication, and reliable delivery within your budget and timeline. We’re available to start immediately. Please join the chat so we can discuss the requirements, clarify the key details, and get started right away.

@mninfotech2

Hi,Your project requires more than standard API development — the backend needs to reliably handle real-time messaging, media, WebSocket events, VoIP signaling, participant limits, wallets and meeting controls. This is exactly the type of backend architecture I can work with. I can extend your existing platform using Node.js, Fastify, Prisma, MySQL, WebSockets and Mediasoup, while keeping the APIs and socket events clean for your mobile team to integrate. My focus would be on: * Scalable real-time messaging and disappearing/view-once messages * Media forwarding, albums, metadata and file lifecycle management * Live location sharing with expiry and privacy controls * Reliable VoIP signaling and dynamic group-call room management * 20-participant enforcement with real-time capacity updates * Screen-sharing/meeting controls including host, co-host, mute, lock, hand raise, reactions and file sharing * Wallet-based call billing, creator earnings and platform commission * Hourly meeting-link charges and zero-rate/free-call logic I’ll first understand your existing database and backend architecture, then implement these modules without disrupting the current system. I’ll also provide properly structured REST APIs, WebSocket events and database changes so your mobile team can integrate smoothly. I’m available to start immediately and can discuss the existing codebase, milestones, timeline and fixed-price scope.

@Web1devloper

With more than 8 years of experience as a Backend Developer, I have cultivated a versatile skill set that aligns perfectly with the complex requirements of your project. Specializing in technologies such as Node.js, MySQL, and REST APIs - just to name a few - my expertise will help you implement all the necessary features for your messaging app seamlessly. From enabling message reactions, editing, and deletions within specific timeframes to managing file metadata, compressions, and media grouping; I've demonstrated excellence in every aspect you've suggested. On top of that, designing privacy protocols like live location sharing and private chat restrictions are some tasks I have successfully undertaken in the past. Finally, when it comes to calling and VoIP signaling systems, I not only understand the technical logistics involved but also appreciate the user experience it should deliver. My promise is that I will ensure smooth group calling processes with ideal participant limitations to maintain call quality. In conclusion, my comprehensive skills encompassing your complete tech stack and dedication towards delivering efficient solutions make me an ideal fit for this project. Hiring me would mean getting someone who has already delivered these complex functionalities in multiple projects before and are ready to hit the ground running for you.

@NabeelAbid22

The complexity of enhancing your WhatsApp-like platform with features such as message reactions, ephemeral messaging, and a robust VoIP signaling system requires a strategic and methodical approach. As a Senior Full-Stack Engineer with over 12 years of experience, I am well-prepared to take on this challenge. I will begin by designing a clean architecture that aligns with your current tech stack, focusing on Node.js and Fastify for optimal performance. For the messaging module, I will implement the required REST APIs and WebSocket events, ensuring that message reactions and threaded replies function seamlessly while adhering to the 10-minute editing rule. Soft deletion will be executed through an `is_deleted` flag, allowing for effective management of user visibility. For ephemeral messaging, I will establish background jobs using Redis or Cron to handle scheduled deletions, ensuring compliance with user privacy. In terms of media management, I will create endpoints for file metadata preservation and batch uploads, while ensuring that compression options cater to both original and optimized files. The privacy features will involve implementing real-time location sharing and obfuscating sensitive data, which is crucial for user trust. For the VoIP signaling system, I will establish constraints for group calling and dynamic room management via WebSockets, ensuring a smooth experience for up to 20 participants. Additionally, the screen sharing functionality will be developed with premium controls that cater to both creators and participants, including monetization features. I am committed to a test-driven approach and reliable delivery, ensuring that each feature is robust and scalable. I look forward to discussing this project further to align on technical specifics and timelines. Regards, Nabeel Abid

@c0909h1179

Your feature list spans three distinct backend problems: message lifecycle rules (edit windows, soft delete, TTL cleanup), Mediasoup room state with hard participant caps, and a per-minute billing loop with a 6% platform cut — each needs different guarantees, so I'd build them as separate services behind one Fastify API. I've built WebSocket platforms with state machines and recoverable execution flows, plus multi-provider payment pipelines with commission tracking, which maps directly to your call-rate wallet deductions. Approach: 1) Prisma schema migrations for reactions, parent_message_id, is_deleted, ephemeral timers, media_group_id; 2) socket event layer for room capacity, live location, and call_room_full broadcasts; 3) Redis TTL + cron workers for disappearing messages and per-minute billing ticks. Is the wallet/ledger system already in your MySQL schema, or does that need building too?

@technologiesit

As an experienced backend developer with a proficiency in JavaScript, PHP and your tech stack, I understand the gravity of your project requirements. My 8+ years in the industry have allowed me to hone my skills in creating scalable, efficient and robust backend solutions, which aligns perfectly with your need for a seasoned developer to revolutionize your communication platform. Having developed over 200 projects successfully, I am fully aware of the nuances that go hand-in-hand with communication systems like yours. My expertise lies in implementing REST APIs, WebSocket events, database schema updates, background jobs and Mediasoup signaling. Through this, I can impeccably take care of your messaging features that are directly related to backend development. Furthermore, my experience with MySQL and PrismaORM makes me adept at handling large databases efficiently - something that would play a pivotal role in managing your extensive chat history. Lastly, one of the crucial aspects of this project is security and privacy policies, and being a developer who has been focusing on these factors since day one ensures not only stability but also user trust. With me on board, you would be hiring someone who doesn't just stop at delivering a project but believes in long-term support for my clients. So let us have further discussions and 'code' an amazing future for your platform!"

@webinfosoftware1

Hii✋ ___ I can work on the backend of your existing communication platform with Node.js, Fastify, Prisma, MySQL & WebSockets. I understand this is backend-only, so I’ll focus on reliable APIs, socket events, schema changes, background jobs & Mediasoup signaling for your mobile team. I can implement message reactions/replies, edit/delete rules, disappearing/view-once messages, media forwarding/albums, live-location expiry, privacy flags, 30-member group-call rules, 20-participant room limits & real-time capacity updates. For the Zoom/Meet-style meeting system, I can build the backend logic for host/co-host permissions, mute/video controls, screen sharing, participant management, chat/file sharing, wallet billing, creator earnings, 6% platform fee & hourly meeting charges. I’ll keep the implementation modular and scalable so future features can be added without restructuring the core system. -- Regards, Ravi S.

@PINESCRIPTERR

Hi, I can extend your existing Node.js/Fastify backend with Prisma/MySQL migrations, versioned REST APIs, authenticated WebSocket events, Redis/BullMQ jobs, and Mediasoup signaling while preserving compatibility with the mobile team. I’ll implement reactions, replies, timed edits, per-user deletion, disappearing/view-once content, media grouping and forwarding, expiring live location, private-chat flags, group-call capacity, invitations, screen-sharing permissions, host/co-host controls, reactions, hand raising, and meeting chat/file events. Paid calls will use an ACID ledger with reservations, per-minute metering, idempotent charges, 6% commission, creator credits, hourly platform fees, refunds, and automated reconciliation. Cleanup, expiry, capacity updates, retries, and billing alerts will be automated and restart-safe. Important: screenshot, copying, and download restrictions can be signaled by the backend but must be enforced by mobile clients and cannot be guaranteed on every device. Three technical questions: 1. Are Redis, BullMQ, object storage, and a wallet ledger already implemented? 2. Does Mediasoup currently run as one node or a distributed worker cluster? 3. Should billing round by exact seconds, started minutes, or completed minutes? Best regards, Houssame

@Sharazkhan2020

Hi, I can develop the Renesas firmware to run IEC 60870-5-104 and standard TCP/IP concurrently through the Quectel EC200, with particular attention to non-blocking communication, recovery logic, and long-term field reliability. EC200 modem/AT command driver, socket manager, IEC104 protocol engine, application data interface, and diagnostics/watchdog handling. UART communication would use interrupt/DMA-driven ring buffers where supported, so modem traffic and IEC104 processing remain non-blocking. For IEC104, I can integrate a suitable lightweight open-source stack where licensing permits, or implement the required IEC104 functionality directly depending on your exact ASDU requirements. This would include connection state management, I/S/U frames, sequence validation, timers, acknowledgements, reconnect handling, and configurable payload processing. 1 Confirm the exact Renesas MCU/board, compiler, EC200 interface, and IEC104 ASDUs required. 2 Build the EC200 AT-command and TCP connection state machine. 3 Integrate IEC104 and concurrent TCP socket handling. 4 Add application-facing TX/RX APIs, buffering, validation, recovery, and watchdogs. 5 Run continuous stress/reconnect testing for 24+ hours and resolve memory or stability issues. 6 Perform warning cleanup, MISRA-C basic analysis, and prepare source, linker files, test scripts, and e2 studio build documentation. Can you share the exact Renesas MCU/board model and which IEC104 ASDUs/commands your SCADA master expects?

@ssquare489

For this backend scope, I’d extend your existing Node.js + Fastify + Prisma/MySQL architecture rather than introduce another service layer, with particular care around Mediasoup room state, disappearing-message cleanup, and wallet-based meeting billing. My two priorities would be scalability and maintainability. I’d model reactions, replies, per-user deletion, media groups, live-location expiry, call capacity, and meeting permissions as explicit database/state transitions, with WebSocket events kept idempotent so reconnects do not create duplicate actions. Redis-backed jobs can handle expiry, presence, room capacity, and delayed cleanup efficiently. For paid meetings, I’d use an immutable wallet ledger with transactional debit/credit entries, platform-fee records, and idempotent per-minute/hour billing rather than directly modifying balances. This makes payment disputes and audits much safer. One correction: is_private_chat can tell mobile clients to disable screenshots/copying, but it cannot be the security boundary. File access, forwarding, and protected media permissions should also be enforced server-side. A relevant example is FileChannels, where I worked with React/mobile apps, WebRTC/Agora calling, PubNub messaging, Stripe, protected document sharing, centralized files, and CRM synchronization.

@megauravpanwar

For scaling Mediasoup signaling alongside high-frequency WebSocket messaging in Node.js and Fastify, maintaining sub-50ms latency requires a decoupled Redis pub/sub layer rather than sticky session bottlenecks on MySQL. To handle ephemeral data cleanup without locking tables, I recommend leveraging Redis TTL combined with background worker queues for Prisma and MySQL bulk updates. For the 20-participant call rooms and Zoom-style granular permissions, atomic Redis counters will cleanly manage dynamic capacity states and real-time room locks. Having architected high-load real-time chat and VoIP signaling platforms over the last 15 years, I will ensure robust schema integrity, secure wallet deduction logic, and flawless API delivery for your mobile team. Let us discuss the core data models and milestone breakdown. Gaurav Panwar Senior Full-Stack & System Architect (15+ Yrs Exp)

@fullstack0407

As an experienced and highly skilled Backend Developer, I possess a comprehensive skill set that aligns perfectly with the technical requirements of your Chat App project. With a deep understanding and proven track record in technologies such as Node.js, Fastify, PrismaORM, MySQL, WebSockets and Mediasoup (Audio/Video calls), I am confident in my ability to seamlessly integrate new messaging, media, privacy, VoIP signaling and Screen Sharing features into your app. In addition to these technical competencies, I bring diverse experience across several industries including finance, inventory management and Ecommerce. This unique background has honed my problem-solving skills and helped me develop a knack for designing efficient and scalable solutions that can cater effectively to your needs. Moreover, my propensity for API integrations will be invaluable in tasks such as preserving original file metadata on upload or incorporating Live Location Sharing features securely. Reliability, attention to detail and delivering work promptly lie at the center of my work ethic. Thus, if given this opportunity, I assure you I will produce a high-quality product that truly captures the essence of your vision. Let's shape the future together!

@FizzaNadeemK

Hi, You need a strong backend developer to extend your existing WhatsApp-like platform with messaging, media, privacy, real-time VoIP signaling, screen sharing, meeting controls, and wallet-based calling while keeping everything secure and scalable. I can implement the required REST APIs, WebSocket events, Prisma/MySQL schema updates, background jobs, and Mediasoup signaling, including disappearing/view-once messages, media albums, live location, group-call limits, premium meeting controls, screen sharing, co-host permissions, and call-rate/payment logic. I’ll keep the backend modular, well-documented, and ready for your mobile team to integrate. I can start immediately. Connect with us to discuss the existing architecture and technical details. Best Regards Fizza

@TechizeBuilder

Dear Client, I read "Backend Developer for Chat App Features" carefully and understand you are looking for a full-stack developer who can handle both application development and AI integration. I have experience with PHP, JavaScript, MySQL, Node.js, Backend Development, Web Application and can work across the complete stack — frontend, backend, APIs, databases, authentication, third-party integrations and AI features. I can build scalable applications using modern technologies while keeping the codebase maintainable and production-ready. A few quick questions: Which AI models/APIs are you currently planning to use? Is there an existing application/codebase, or will the project be built from scratch? Thanks & Regards, Deepak

@jonasdedzo

Hi there, I can handle the backend work for your WhatsApp-like platform using Node.js, Fastify, Prisma and MySQL. I’ll structure the changes cleanly across REST APIs, WebSocket events, database migrations and background jobs, covering reactions, replies, editing/deletion rules, disappearing/view-once messages, media forwarding/albums, privacy flags and live location expiry. For VoIP, I’ll implement the 30-member group-call visibility rule, 20-participant room cap, real-time capacity events and mid-call invitations with Mediasoup signaling. I can also build the meeting backend for screen sharing controls, co-host/moderation actions, meeting chat/file sharing, creator call rates, wallet deductions, 6% platform fee and hourly meeting charges. I’ll keep the APIs documented and test edge cases before handoff. Looking forward to working with you. Thanks