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Enhanced an existing MERN-based CRM by implementing new business modules and improving overall system performance. Scope included lead management enhancements, follow-up reminders, dashboard improvements, API optimization, role-based access updates, bug fixing, responsive UI improvements, and performance optimization. Ensured backward compatibility with the existing application while delivering seamless user experience and clean, maintainable code.
Project ID: 40652446
117 proposals
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Active 1 day ago
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117 freelancers are bidding on average ₹30,893 INR for this job

With a proven track record of over 8 years in web and app development, I possess a powerful mix of the talents you're looking for. My comprehensive understanding of MERN stack is incorporated with Node.js in the back-end, including MongoDB, Express JS, and powerful frontend JavaScript libraries like React.js. These skills align perfectly with the enhancement your CRM needs. In my previous employment at an IT firm, I handled intricate projects that demanded intense problem-solving skills and a firm grip on emerging technologies. This diversity of experience gives me an exceptional ability to craft innovative solutions with maintainable code structures that would greatly benefit your project. Furthermore, my hands-on expertise in Agile methodologies will bolster seamless communication flow, address evolving requirements promptly, and ensure project milestones are met efficiently. Most importantly, I have great respect for backward compatibility while creating upgrades - a necessity your project demands. By leveraging my proficiency in API optimization and fine-toothed bug fixing, I guarantee to enhance not only the lead management system but also the overall performance of your CRM. The success of any project relies on the ability of its team to adapt and deliver; I have excelled in both at all stages of my career and can draw from those experiences to surpass your expectations with fidelity. Let's embark on this collaborative journey toward a robust CRM system.
₹26,000 INR in 5 days
6.7
6.7

I have strong experience with MERN applications and can enhance your existing CRM without disrupting current functionality. I can handle new business modules, lead management, reminders, dashboard improvements, API optimization, role-based access, bug fixes, responsive UI, and performance tuning while keeping the code clean and maintainable. I’m available to start immediately.
₹27,000 INR in 7 days
6.1
6.1

Hi Valuable Client, Here is our structured methodology to enhance and optimize your existing MERN CRM System: Codebase Audit & Backward Compatibility: Conduct an initial code review of your React frontend, Express/Node.js backend, and MongoDB schemas. We establish clean environment branchings and regression testing protocols to ensure all new modules remain 100% backward compatible. Module Development & UI Enhancements: Refine Lead Management and Follow-Up Reminder workflows. Upgrade dashboard components and responsive UI elements using modular React patterns for smooth, mobile-friendly navigation. Role-Based Access Control (RBAC) & Security: Audit JWT and middleware authorization rules, enforcing granular permission checks across API endpoints and UI routes to protect sensitive customer data. API & Database Performance Optimization: Optimize MongoDB queries via proper indexing and aggregation pipelines, streamline Express backend response times, and reduce React re-renders for fast dashboard data loading. Bug Fixing, QA & Deployment: Perform end-to-end sandbox testing to resolve edge-case bugs, document clean code standards, and execute zero-downtime deployment. Ready to audit your repository and get started!
₹27,000 INR in 14 days
5.9
5.9

With over 5 years of experience and a comprehensive skillset in Backend Development, MERN, Node.js, and React.js, I am the perfect fit for your CRM Enhancement & Module Development project. Not only have I worked extensively with MERN stack, but I have also specialized in creating complete solutions from scratch to deployment that align with user requirements. Throughout my career, clean and maintainable code has been my paramount focus. Collaborating with your team, I can enhance your existing CRM by implementing new business modules and improve overall system performance as outlined in your project description. My knack for API optimization and role-based access updates ensures that you will have a CRM that operates responsively with concrete dashboard improvements. Moreover, my proficiency at bug fixing will add tremendous value through the elimination of any issues on the existing system. Lastly, time is of great value therefore I prioritize effective communication and on-time delivery. This project is not just another assignment for me; it's my chance to create something amazing with you. Let's discuss your vision to bring the most out of your CRM!"
₹27,000 INR in 7 days
5.6
5.6

Hi, I can enhance your existing MERN CRM while keeping the current architecture and functionality fully intact. I have strong experience with lead management, follow-ups, dashboards, REST APIs, RBAC, responsive UI, and performance optimization. I’ll focus on clean, maintainable code while improving API response times and overall application performance. I’ll carefully handle existing modules to ensure backward compatibility and avoid disrupting production workflows. I’ll also fix bugs, improve UX, and thoroughly test the updated functionality before delivery. I can review the current codebase and provide a realistic timeline immediately after access.
₹26,000 INR in 10 days
5.2
5.2

Hi, I can enhance your existing MERN-based CRM while maintaining full backward compatibility and minimizing disruption to current workflows. I’ll improve lead management, follow-up reminders, dashboards, role-based access, and responsive UI while optimizing APIs and overall application performance. I’ll first review the existing architecture and codebase to identify bottlenecks, dependencies, and areas requiring careful refactoring. From there, I’ll implement the requested modules with clean, maintainable React/Node.js code, fix existing bugs, optimize database/API operations, and thoroughly test existing and new functionality. My focus will be delivering measurable performance improvements without breaking current features, followed by clear documentation and a stable, production-ready implementation.
₹27,000 INR in 7 days
4.9
4.9

With a strong passion for creating dynamic, streamlined CRM solutions, I am confident that I am the right fit to enhance your MERN-based application. My vast experience in full-stack development and specific proficiency in Express JS, MERN stack, Node.js, and React.js make me well-equipped to tackle all aspects of this project. Having undertaken analogous jobs previously, I am well-versed in enhancing existing applications to deliver superior performance. My focus on clean architecture and maintainable code ensures seamless integration of new modules without compromising the system's backward compatibility. The upgrades I propose – optimized APIs, improved lead management, follow-up reminders, role-based access updates, bug fixing, responsive UI improvements and enhanced performance – will all be carefully designed and seamlessly integrated into your existing CRM. Lastly, I value clear communication with my clients at every step of the project just as much as delivering results proficiently. You can expect progress reports and open lines of dialogue that will not only keep you updated but also provide you with an opportunity to give feedback. Choose me for a diligent approach that promises top-notch upgrades to your CRM and a collaborative partnership that keeps you in the loop throughout the journey.
₹27,000 INR in 7 days
4.8
4.8

Hello, I have 10 years of experience developing and enhancing MERN-based CRM platforms with scalable architecture and maintainable code. I can improve your existing system while preserving current functionality and ensuring smooth compatibility with the application already in use. My approach would include reviewing the current codebase, strengthening lead management and follow-up workflows, improving dashboard performance, optimizing REST APIs, refining role-based access, and resolving existing bugs. I can also enhance the responsive UI and streamline database interactions to deliver faster and more reliable performance across devices. Let’s discuss your CRM requirements and the improvements you want to prioritize. Best regards
₹27,000 INR in 7 days
4.8
4.8

Hello, I am a Full Stack Developer with 15 years of working experience and have experience working on MERN stack and have experience working with all the tech stack you have mentioned for this project. I can make changes to your existing MERN application and add modules as per your requirements also I can enhance the performance of your application and improve it. I can complete the work with best quality and also complete it very quickly. Looking forward to hear from you.
₹28,000 INR in 5 days
4.2
4.2

Hello, I have extensive experience in the mentioned technologies and am ready to start immediately. Let’s connect via chat to discuss the project requirements further. Thank you, Jignesh
₹26,000 INR in 5 days
4.1
4.1

The priority here is extending the existing CRM without destabilizing what already works. I would first review the current MERN architecture, data models, API structure, authentication/roles, and the areas where performance or bugs are already affecting users. From there, I can implement the new business modules and improve the existing lead-management and follow-up workflows while preserving backward compatibility. On the backend, I would review Express APIs, MongoDB queries/indexes, validation, and authorization logic to reduce unnecessary requests and improve response times. On the React side, I would focus on dashboard usability, responsive behavior, cleaner state handling, and fixing UI issues without changing established workflows unnecessarily. Role-based permissions would be enforced consistently on both frontend and backend rather than relying only on hidden UI elements. I would handle the work incrementally so each module can be tested against the current application before moving to the next, with regression checks around existing CRM functionality. Could you share the current codebase structure and a prioritized list of the new modules or issues you want addressed first?
₹27,000 INR in 7 days
3.6
3.6

With my extensive experience as a Full Stack Developer, specializing in Backend and Frontend Development, particularly in Node.js, I am confident that I can deliver exceptional results for your CRM Enhancement & Module Development project. My specialization extends to working with complex MERN applications, which makes me highly attuned to your project's needs. Combining my strengths in building user-centric solutions with scalable backend systems, I can provide the seamless end-to-end enhancement your CRM software requires. Beyond the essential skills that your project demands; HTML, CSS, React.js, Laravel and PHP development, I also bring expertise in AI integration. Your brief indicates a need for optimizing data management and improving overall system performance - areas where incorporating AI capabilities can create significant value. My background in developing AI-powered solutions will enable you to leverage cutting-edge technologies to transform your CRM into a more streamlined and intelligent system. Lastly, my commitment to quality extends beyond the initial development phase. I ensure that all the code I produce is clean and maintainable, allowing for future updates without disrupting existing functionalities. As the digital landscape continues to evolve rapidly, having backward compatibility with current software while simultaneously embracing new features is vital. By choosing me for this project you're opting for a long-term fix aiming at.
₹27,000 INR in 7 days
3.7
3.7

Hi, I have experience enhancing and optimizing existing MERN-based CRM systems without disrupting current functionality. I can handle lead management, follow-up reminders, dashboard enhancements, API optimization, role-based access, bug fixing, responsive UI improvements, and overall performance optimization while maintaining backward compatibility. My approach would be to first understand the existing architecture and identify performance bottlenecks, then implement the required modules with clean, scalable and maintainable code. I’m comfortable working with React, Node.js, Express, MongoDB, REST APIs and role-based systems. Happy to review the existing CRM and discuss the required improvements. Lets discuss on chat. Best regards, Abhishek
₹27,000 INR in 7 days
3.7
3.7

With my extensive 9+ years in web and mobile development, I bring a wealth of knowledge to enhance your MERN-based CRM. My expertise in Node.js, React.js and versatile skills including E-commerce, CMS-based development and APIs will be invaluable for implementing new business modules and improving overall system performance. I understand the critical importance of backward compatibility with existing applications while providing a seamless user experience, and I can ensure a clean, maintainable code that serves that purpose. Moreover, my team and I are committed to turning your ideas into reality. We provide cost-effective cross-browser-compatible solutions while prioritizing client satisfaction. Our package not only includes project delivery but also three months of free support to ensure the accountability of our services. In short, if you choose me for your project; you're not only getting a skilled developer but also a reliable partner who is determined to offer the best version of your CRM. Let's collaborate to take your MERN application to new heights!
₹27,000 INR in 7 days
4.4
4.4

Hi, I can enhance your existing MERN CRM without disrupting current functionality. I’ll handle lead management, follow-up reminders, dashboard improvements, API optimization, role-based access, bug fixing, responsive UI and performance improvements. I’ll first review the existing architecture and codebase, then deliver clean, maintainable changes with full backward compatibility. Ready to start immediately.
₹27,000 INR in 7 days
3.2
3.2

Hi there, I can handle the enhancement and module development for your existing MERN-stack CRM to optimize performance and expand its capabilities. Working with React, Node.js, Express, and MongoDB, I will implement your required lead management features, follow-up reminders, role-based access updates, and UI/dashboard improvements while ensuring strict backward compatibility and clean, maintainable code. I will deliver optimized backend APIs, upgraded frontend components, complete bug fixes, and verified responsive UI updates across all modules within your timeline. Do you have a detailed feature breakdown or API documentation ready to share so we can align on the implementation scope? Best regards, Mohinder
₹27,000 INR in 3 days
3.2
3.2

Hi, I have developed a small lead management system using Laravel and few other CRMs before. I can help you with new feature updatiation or editing. Hope to hear from you to discuss. Thank you
₹26,000 INR in 15 days
3.2
3.2

Hello, I have carefully reviewed your project requirements and I am confident I can enhance your existing MERN-based CRM system effectively. I have strong experience in MERN stack development and have worked on similar CRM systems where I improved performance, added new modules, and optimized existing functionality without disrupting the current system. For your project, I will focus on: * Enhancing lead management system for better tracking and usability * Implementing efficient follow-up reminder functionality * Improving dashboard with meaningful and real-time insights * Optimizing APIs for faster response and better performance * Strengthening role-based access control for improved security * Fixing existing bugs and ensuring system stability * Making UI fully responsive and user-friendly across devices * Overall performance tuning for smoother user experience * Ensuring backward compatibility so existing features remain unaffected I always follow clean coding practices, modular architecture, and proper testing to ensure long-term maintainability and scalability of the system. I am available to start immediately and can deliver high-quality improvements within the required timeline. Looking forward to working with you.
₹28,110 INR in 15 days
3.2
3.2

Hi, I can enhance your MERN CRM by adding the new business modules, follow-up reminders, dashboard improvements, and role-based access updates, while optimizing APIs and fixing bugs without breaking backward compatibility. I can start today. I will also tighten the responsive UI and profile slow endpoints so the performance gains show up on the pages your team uses most. Questions: 1) Which modules are the top priority to ship first? 2) Do you have a staging environment I can work against? Looking forward to discussing further. Regards, Shayan.
₹26,700 INR in 3 days
2.9
2.9

Hello, Your existing CRM needs improvements without disrupting the workflows and functionality your users already rely on. I can enhance it while keeping the codebase stable, scalable, and maintainable. >>> Please come on chat to discuss more in detail . I am available 40 hrs per week. I'll deliver this project under 500 USD with free bug fixes. I have 10+ years of development experience, including MERN-based applications, API development, dashboard improvements, role-based access, performance optimization, and responsive UI development. I can work directly with your existing architecture and ensure new features integrate smoothly. My approach: • Enhance lead management, follow-ups, dashboards, and role-based permissions. • Optimize APIs, database queries, and frontend performance. • Fix existing issues while maintaining backward compatibility. I’ll focus on clean, reusable code and thorough testing so improvements do not introduce regressions. Looking forward for connecting. Best Regards,
₹47,000 INR in 27 days
3.1
3.1

India
Member since Aug 17, 2026
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