Senior full stack Developer for Incomplete Platform

@OutsourceMan

I'm Raman from CnELIndia, a tried-and-true industry expert with over 18 years of experience and numerous successful projects under my belt. As a senior full-stack developer, I am well-versed in all aspects of web development and have an undeniable strength for completing unfinished projects, just like the one your team has on hand. I've taken over existing codebases countless times before and successfully delivered them to production quality. My breadth of technical abilities aligns closely with your project requirements. For instance, I'm highly experienced in working with multi-tenant SaaS platforms that require meticulous organization isolation and company-level data segregation. In addition to this, I have extensive knowledge in IoT and MQTT technologies that are essential for your platform's seamless functioning. Lastly, I know that choosing the right partner is about more than just technical skills. It’s about finding someone who can truly understand the objectives and grow alongside the project. My strong communication skills coupled with my determination to deliver projects on-time and within budget make me not just a capable developer but a trustworthy long-term partner you can rely on to drive this project forward. Looking forward to discussing the project details further!

@ykarora26

With a deep understanding of your platform's needs for completing backend development, I bring a wealth of experience in multi-tenant architecture and user permission management. I've successfully implemented similar solutions in the past, ensuring robust security and streamlined operations. How do you envision the scalability of the platform as user volumes increase? Regards, Yogesh Kumar

@rahuliitm69

Hi, I can help you complete and stabilize your existing backend, turning it into a production-ready, scalable platform. My team has already developed similar booking, wallet, authentication, and management platforms, so we're comfortable taking over partially completed projects and improving the existing architecture without unnecessary rewrites. Development approach: Review the current codebase, database, and APIs Audit architecture and identify gaps/technical debt Complete the remaining backend modules Optimize security, performance, and scalability Integrate and test APIs thoroughly Deploy, monitor, and provide long-term maintenance I focus on clean, maintainable code, proper documentation, and seamless collaboration, making future enhancements much easier. A couple of questions: Which backend framework and database is the current platform built on (Node.js/NestJS, Laravel, Django, etc.)? Do you already have API documentation and a prioritized list of the remaining modules to be completed? I look forward to discussing your project and becoming your long-term backend development partner. Best regards,

@Xceptive

Hi, At Xceptive Solutions LLP, we specialize in cutting-edge web development solutions tailored to meet your business goals with speed, scalability, and style. With over 12 years of industry experience, our team crafts responsive, user-centric websites that not only look great but also drive real results. Responsive UI/UX Design Custom Web Applications (React, Node.js, PHP, Laravel, etc.) CMS Platforms (WordPress, Shopify) API Integrations & Database Design SEO Optimization & Performance Tuning Let’s connect and create something powerful for your digital presence! Warm regards, Deval Mungalpara Co-Founder, Xceptive Solutions LLP

@contriverz

Hello, I'd be excited to join your team as a long-term Senior Backend Developer and take ownership of the existing platform. I have experience taking over ongoing projects, auditing existing codebases, completing unfinished modules, and preparing applications for production deployment. I can help with: Completing and optimizing the existing NestJS/Node.js backend Designing and implementing a secure multi-tenant architecture Role-based access control (RBAC) and permission management PostgreSQL optimization, indexing, and database migrations Redis queues, background jobs, and caching API security, audit logs, and monitoring Swagger/OpenAPI documentation and Postman collections Docker, CI/CD, deployment, and production optimization Relevant Experience: Built and maintained SaaS platforms with role-based permissions, multi-tenant architecture, and scalable REST APIs. Worked with PostgreSQL, Redis, Docker, JWT authentication, WebSockets, and cloud deployments for production environments. Availability: 30–40+ hours per week Available for long-term collaboration Can start immediately Rate: Hourly or monthly engagement is fine. We can finalize the pricing based on the remaining scope and long-term commitment. I'm confident I can take ownership of the backend, complete the remaining modules, improve the architecture, and help evolve the platform into a stable, production-ready SaaS product. Best Regards, Dinesh L

@avinashjain09

Hello, I am a senior full stack developer having 8+ years of experience, I can take the responsibility to lead this project and grow with your team. I can give 40 hours per week. I have the skills and experience to handle this work, and I have expertise in reading someone else code and continue with that. Can we have more discussion. Regards Avinash

@mrresearcher99

Hello, I have 10 years of experience developing scalable backend systems, SaaS platforms, and REST APIs using Node.js, PostgreSQL, and cloud-based architectures. I have extensive experience taking over existing codebases, refining architecture, and delivering production-ready solutions while maintaining clean, maintainable code. For this platform, I would focus on completing the multi-tenant architecture, strengthening role-based permissions, optimizing ERP workflows, enhancing IoT communication APIs, and improving scalability with Redis, secure API design, and performance optimization. I have experience building CRM, ERP, and SaaS applications with complex business logic and API-driven integrations, making me well-suited to extend and stabilize your existing platform. I would be glad to discuss your current architecture and the roadmap for taking it to production. Best regards

@webinfosoftware1

Hi,✋ ------✦❇️ Availability: 40+ hrs/week ✦ Rate: ₹1200 / hr ❇️✦----- I have 12 yrs of experience taking over existing codebases and turning them into production-ready SaaS platforms. Strong expertise in Node.js/NestJS, PostgreSQL, Redis, Docker, REST APIs, JWT, WebSockets/MQTT, RBAC, & multi-tenant architectures. I can complete your remaining modules, optimize the architecture, implement IoT workflows, ERP features, CI/CD, testing, Swagger documentation, and provide long-term maintenance. Ready to review the existing codebase & start immediately. -- Regards, Ravi s.

@vishal1145

Your platform has a critical architectural gap - without proper multi-tenant isolation, you're one misconfigured query away from exposing Company A's data to Company B. This isn't just a feature gap; it's a compliance and trust liability that blocks enterprise sales. Quick questions - what's your target timeline for production launch? And are you planning row-level security in PostgreSQL or application-layer tenant filtering? Here is the architectural approach: - MULTI-TENANT ARCHITECTURE: Implement schema-per-tenant isolation with connection pooling to prevent data leakage while maintaining query performance under 100ms. - IOT/MQTT: Build idempotent command queues with Redis pub/sub to handle offline devices and ensure door events don't execute twice during network failures. - NESTJS + POSTGRESQL: Refactor existing modules into domain-driven services with proper transaction boundaries and add integration tests covering auth, bookings, and payments. I've built 3 multi-tenant SaaS platforms that scaled to 200+ organizations without a single cross-tenant data breach. Let's schedule a 20-minute architecture review so you see exactly how I'll close these gaps before committing budget.

@jayantkumar314

I’m a senior backend developer experienced in taking over existing Node.js platforms and bringing them to production quality. I can own the NestJS/PostgreSQL architecture, complete the multi-tenant and permission systems, strengthen the booking and wallet modules, and build the IoT command lifecycle, Redis queues, WebSocket/MQTT communication, monitoring, audit logs, testing, and API documentation. I’m comfortable working in an established codebase, improving architecture without unnecessary rewrites, and delivering through structured sprints and code reviews. I’m available for long-term collaboration and can share relevant SaaS, multi-tenant, and real-time backend examples, along with my weekly availability and rate, privately.

@technologiesit

As a senior full stack developer with over 8 years of experience, much of which has been dedicated to similar backend and SaaS projects like yours, I am confident that I can lead your project from its current state to becoming a fully functional platform. With knowledge in Node.js, PostgreSQL, Redis, and OAuth, I have the technical skills required to own this project and deliver it with precision and efficiency. My understanding of multi-tenant architectures and IoT/MQTT experience will be incredibly valuable in handling tasks like organization isolation and designing smart locker features. I understand the uniqueness of your project lies in building on existing codebase rather than starting from scratch; this is a challenge that excites me! I assure you that I will bring creative problem-solving skills to perfecting implementation overtime while ensuring high-quality codes are maintained throughout every module. Let's make impactful changes together through this journey by leveraging technology at its best. Would adore discussing further details about this fantastic opportunity in order to give you a price that fits the requirement.

@akshaybhagwat76

***EXPERT BACKEND DEVELOPER*** Hi! I read that you're looking for a Senior Backend Developer to take ownership of your existing platform and complete the remaining multi-tenant, ERP, and IoT smart-locker modules. I bring 8+ years of real-time IT experience in backend and full-stack development, with strong, hands-on expertise in multi-tenant SaaS architecture, organization isolation, granular role/permission systems, and REST API design — directly relevant to the core modules you still need. My domain background covers multi-tenant platforms, healthcare, e-commerce, and hospital management systems. I'm comfortable working within an existing codebase rather than rebuilding from scratch, and I prioritize clean architecture, proper documentation (Swagger/Postman), and unit/integration testing so the platform reaches genuine production quality. I'd like to be upfront my primary stack is .NET Core, and I'd want to align quickly on your Node.js/NestJS codebase before committing to hours/week and rate, to make sure I can move fast from day one. Let's connect to discuss scope and fit. Akshay B

@TechizeBuilder

Dear Client, I read "Senior full stack Developer for Incomplete Platform" carefully and understand what you're looking to achieve with this Mern Stack Development project. My hands-on experience with PHP, Website Design, Node.js, PostgreSQL, Redis, Backend Development aligns directly with what you need. I've delivered similar Mern Stack Development work end to end — clean, scalable and on time — and I can share closely related samples and start right away. A few quick questions to get us started: 1. Do you have detailed requirements ready, or should we define the scope together? 2. What's your target timeline for the first working version? 3. Are there existing designs, code or systems I should build on? Thanks & Regards, Deepak

@gsantharam7088

Hello, I have 12+ years of experience in backend development and have taken over multiple partially completed projects, transforming them into secure, scalable, production-ready platforms. I can review your existing codebase, identify architectural gaps, and complete the remaining modules while maintaining clean, well-documented code. My expertise includes Node.js/NestJS, PostgreSQL, Redis, Docker, JWT authentication, REST APIs, WebSockets, CI/CD, and scalable SaaS architectures. I also have experience building ERP systems, booking platforms, CRM solutions, payment integrations, role-based access control, and multi-tenant applications with strict data isolation. I have worked on IoT-integrated platforms involving device communication, event processing, background jobs, and real-time updates. I can implement MQTT/WebSocket architecture, command lifecycle management, firmware workflows, monitoring, audit logging, and production optimizations. I can contribute **40+ hours/week** and am interested in a long-term partnership. My focus is writing maintainable, testable code with comprehensive API documentation (Swagger/OpenAPI), automated testing, and smooth deployment pipelines. I'd be happy to review the current codebase, discuss the architecture, and provide a clear roadmap to bring the platform to production quality.

@santoshkumars17

As a seasoned full-stack developer, I have successfully delivered numerous projects that demonstrate my strong grasp of complex backend functionalities, particularly with Node.js – the technology that would be leveraged in completing your platform. My proficiency extends beyond that; from your list of requirements, I am particularly well-versed in working with databases like PostgreSQL, and Redis as well as using Docker for effective deployment. A standout area from my skillset includes creating multi-tenant SaaS platforms exactly like what you need! I have developed similar systems in the past, designing granular role-based access controls and establishing proper data segregation across multiple organizations within a single platform. My familiarity with IoT and MQTT, which you mentioned is a plus, ensures smooth communication between hardware and your software. Deadlines are sacred to me. To validate this commitment, my broader 5+ years of experience has sharpened my delivery quality without compromising on speed or efficiency. Being system-driven and detail-oriented, I will rigorously test and document the project for you, ensuring its readiness for production. I'm truly excited about the opportunity to work on your project and help drive it towards completion and successful maintenance in the long-term. Let's connect soon!

@mykhaylob4

✋ Hi there. I can take over your existing backend, complete the missing production modules, and help turn the platform into a stable and scalable long term product. ✔️ I have solid experience with Node.js, NestJS, PostgreSQL, Redis, Docker, REST APIs, JWT authentication, multi tenant SaaS platforms, and backend architecture. In a previous project, I joined an unfinished platform, completed the remaining modules, improved the database design, added role based permissions, optimized performance, and prepared the system for production deployment. ✔️ For your project, I will review the current codebase, identify gaps, and complete the missing modules while following the existing architecture. I have experience with multi tenant systems, WebSockets, MQTT based communication, background queues, Swagger documentation, testing, CI and CD, audit logs, and scalable API design. I focus on writing clean code that is easy to maintain as the platform grows. ✔️ I am available for long term collaboration, regular communication, code reviews, and continuous improvements until the platform is production ready. Let’s chat to discuss the current codebase, priorities, and development roadmap. Best regards, Mykhaylo

@ssquare489

Your backend already has the foundations in place, so the priority is evolving it into a production-grade SaaS with strong tenant isolation, reliable IoT communication, and operational tooling rather than continuously adding new modules. My priorities would be scalability and maintainability. I have experience with NestJS, PostgreSQL, Redis, Docker, JWT authentication, WebSockets, queue-based processing, and role-based SaaS platforms. I would begin by reviewing the existing architecture, identifying technical debt, and then implementing multi-tenant boundaries, granular RBAC, Redis-backed jobs, audit logging, API versioning, comprehensive testing, and CI/CD while preserving backward compatibility. For the IoT layer, I have experience with real-time systems using WebSockets and event-driven architectures. I would model device commands as idempotent operations with acknowledgements, sequencing, retries, heartbeat monitoring, offline detection, and complete audit trails. The API would be fully documented with OpenAPI/Swagger and accompanied by integration tests and a maintained Postman collection. A closely related project is eSimFox, where we designed a multi-tenant platform with role-based access, scalable administration, real-time system events, payment and provisioning integrations, and an architecture built to onboard new regions and business partners without redesign. Availability: 35–40 hours/week.

@letscms

Hi, I have strong expertise in NestJS and can take ownership of your existing backend to make it production-ready. I have experience building scalable SaaS platforms with PostgreSQL, Redis, Docker, JWT authentication, role-based access control, and REST APIs. I'm confident handling multi-tenant architecture, ERP modules, IoT integrations, WebSockets/MQTT, and performance optimization. I write clean, maintainable code with proper documentation and testing. I'm available for a long-term collaboration and would be happy to discuss the existing architecture and next milestones. Best Regards Jitendra Sharma

@Hrolgar

How many tenants and device types is this backend actually carrying today, and is the multi-tenancy gap structural, shared schema with no row-level isolation, or mostly missing at the permission layer? That changes the shape of M1 more than anything else in the brief. I'd rather take this on as four milestone-sized chunks than one long black-box handoff. A smart-locker backend already touching money and hardware needs each layer tested before the next builds on it. Auth and bookings sound solid from your description, so the real risk sits in tenancy isolation and the device lifecycle, not the parts already working. M1: multi-tenant data model plus role and permission hardening on existing auth, 37500 INR, 9 days. M2: bookings, pricing and wallet made tenant-aware, with an ERP-style admin permission layer, 45000 INR, 10 days. M3: IoT device lifecycle, provisioning, state machine, telemetry, plus a firmware OTA pipeline, 45000 INR, 10 days. M4: monitoring, alerting and full handover docs, so this doesn't stay an incomplete platform, 22500 INR, 6 days. 150000 INR over 35 days is my read off the brief for that scope. Whether device count and OTA rollback strategy push M3 up is the one thing I can't price from a description alone. What's the current device count, and are they on a fixed protocol or does each vendor speak differently? Is the ERP/permissions layer meant to mirror a system you're migrating from, or built fresh?