MERN App Bug Fix & Features

@avinashjain09

I can help you stabilise and accelerate your MERN application by going straight into the root issues you’re facing. Slowdowns under load and recurring functional bugs usually point to inefficient queries, unoptimised React renders, or bottlenecks in API layers—so my first step will be a full audit of your MongoDB indexes, Node/Next API routes, and client-side patterns to pinpoint exactly where performance is leaking. Once stability is restored, I’ll move on to the new features you’ve already mapped in Figma/Jira, building them with clean, modular React components and documented API integrations. can we discuss in detail

@malkesh3m

⭐ Hello there, My availability is immediate. I read your project post on React/Node Developer for MERN App Bug Fix & Features. I have extensive knowledge in MERN Stack (MongoDB/MySQL, Express JS, React, and NodeJS), as well as RESTful API integration. I am an experience full-stack developers with skill sets in - React, JavaScript, jQuery, TypeScript, NextJS, React Native - NodeJS, ExpressJS - MongoDB, MySQL, PostgreSQL, SQLServer, SQLite - Redux, Thunk, GIT - JavaScript, HTML, CSS, Tailwind CSS - AWS, Azure, Digital Ocean, GoDaddy, Web Server Hosting Please send a message So we can quickly discuss your project and proceed further. I am looking forward to hearing from you. Thanks

@letscms

Hello Sir, I have read your requirements carefully. I am confident I can resolve the issue.I am a full stack developer and 10+ years of experience in MERN, PHP. I can handle entire process end to end quickly & securely. Regards & Thanks Jitendra Kumar Full Stack Developer

@nitishk277

Hey, I can help stabilise and optimise your MERN production application by tracing the root causes of the slow-downs and functional bugs in MongoDB, Next, React, and Node.js, then improving both server-side and client-side performance until your Lighthouse benchmarks are met again. Once the app is stable, I’ll move into building the new features already scoped in Figma and Jira, integrating the required REST/GraphQL APIs, and delivering clean, reusable React components with well-structured commits. I’m comfortable with GitFlow, webpack, and modern React (hooks, context, TypeScript), and will follow your process: resolving bugs, integrating new APIs, preparing a clear changelog, and submitting work through pull requests only. Before getting started, could you confirm which areas show the most slowdown (API latency, DB queries, or frontend rendering) and whether you already have performance logs from production? More than just ticking off boxes, I bring a client-centric approach to my work. I'll prioritize your vision and ensure clear communication throughout the project. Let's discuss how we can turn your research ideas into a valuable and efficient study alongside the Qualtrics platform. Let's connect. Thank you!

@caroldata

Hello there, I'm experienced with REST/GraphQL API integrations and can follow your workflow using Jira, Figma, and Postman. Once granted access, I’ll begin by reviewing logs, profiling the app under load, and addressing the core issues before moving into new feature development. I’d be glad to assist with stabilising your MERN application, improving performance, and delivering the next set of features. I’m comfortable working inside existing codebases, tracing bottlenecks, and optimising both Node/MongoDB backend performance and React/Next client-side rendering. I also work with GitFlow, CI-based review pipelines, and modern React (hooks, context, TypeScript). Thank's, Shivpal S

@mayankinnovative

Hello! I'm here to help you stabilize and enhance your MERN application. Project Understanding: Your production app is experiencing bugs and performance issues, and you need a developer to identify and fix the problems, implement new features, and integrate external APIs. Approach: 1. Review error logs and codebase to identify bottlenecks. 2. Optimize MongoDB queries, server-side rendering, and client-side code. 3. Implement new features, focusing on clean, reusable code. 4. Integrate REST/GraphQL APIs and document endpoints. 5. Ensure thorough testing and CI pipeline integration. Relevant Experience: With 15+ years of experience in MERN development, I've optimized and scaled similar applications, improving performance and reliability. "Let's tackle these challenges together, ensuring your app is stable, fast, and sets the stage for future growth!"

@ModernTechno442

As the head of a reputable web design and development team with over 7 years of experience, I am confident in my ability to resolve the issues plaguing your MERN app. Our comprehensive understanding and extensive knowledge in JavaScript, MongoDB, and Node.js, will enable us to effectively analyze your codebase, trace the root of the functionality bugs, and optimize both the server and client responses to restore normal performance. Apart from stabilizing your application, we are well-versed in integrating REST/GraphQL APIs which would allow for better data sourcing and future-proofing of your platform. Additionally, we guarantee you a clean and reusable code structure with thorough documentation for each endpoint we integrate. Not only does this improve maintenance down the line but ensures a successful merge of branches during unit tests which is essential for the overall project's success.

@FreeLancers360

Drawing from my team's proficiency in Front End and Back-End technologies such as JavaScript, MongoDB, Node.js and React.js, we are experienced in resolving functionality bugs and enhancing performance in existing applications. We bring a deep understanding of the MERN stack to your project, allowing us to not only fix any current issues you're facing but also provide clean, well-commented and reusable code for future scalability. In addition to debugging and optimising your app, we are comfortable integrating third-party APIs, as you've mentioned, which is crucial for streamlining diverse data sources and subsequently preparing for payment-related work. Our familiarity with GitFlow gives us an advantage in ensuring that all changes we make are reviewed appropriately through pull requests -thereby maintaining the integrity of your main branch. Our deliverables extend beyond mere code fixes; we provide a concise changelog of our updates whilst signing it off with successful build merge post thorough unit testing. Being adaptable to tools such as webpack and TypeScript (if preferred) further strengthens our capabilities in making your project more stable & robust. I believe our comprehensive skillset positions us perfectly to add immediate value by identifying and resolving the root cause of your application's issues while incorporating new desired features effectively.

@sohaibfreelance

Hi, I have read your project description and understood it. I can debug your MERN application, resolve functionality bugs, optimise server and client performance, implement new features from Figma/Jira, and integrate the required REST/GraphQL APIs. I can ensure clean, reusable code, proper documentation, and a smooth CI/CD process for a stable and high-performing application. Regards, M Sohaib

@piyushg200

✨ Let's make your MERN production app seamless and stress-free. Hello ssajidullah, I see you need a developer to optimize your MongoDB, Next, React, and Node.js application for performance and bug fixes. I understand how important stabilizing the app and adding new features are for you without compromising response times under load. I've built similar solutions for tech companies. I'll deliver bug fixes, improved performance, new features, and API integrations, all with clean code and documentation — fully functional and ready for review. Successfully delivered 10 similar projects with 5-star ratings. Available to start immediately — first milestone ready in 2 weeks. I'd love to discuss your vision. When works best for a quick 10-minute call? Worst case, you'll get free insights to guide your project. Looking forward to collaborating, Piyush Gupta MERN Developer | 5+ Years

@taglineinfotech

"Yes, we are comfortable working with GitFlow, webpack, and modern React (hooks, context, TypeScript). Please let us know when we can catch up for a short call to take this further." Hi there, Greetings from Tagline Infotech! With 7+ years of experience delivering full-stack web and mobile solutions, I’d be excited to help you optimise both the server and client so response times return to normal. Backed by strong capabilities in mobile development (Flutter, React Native, Android/iOS), web technologies (React, Angular, RoR), backend engineering (Node.js, PHP, Python/Django), cloud platforms (AWS, Azure, GCP), and QA, AI/LLM, UI/UX design, ROR, and many others. Why Partner With Us: * Dedicated team for front-end, back-end, and QA under one roof. * Proven track record delivering mobile and web apps used by thousands. * Transparent communication, milestone-based delivery, and a long-term collaboration mindset. Awaiting your revert. Warm regards, Tagline Infotech

@arshig8

Hello, I’m a highly skilled full-stack developer and digital solution architect with 4+ years of experience transforming ideas into powerful, scalable, and business-focused web and mobile applications. I specialize in building performance-driven, user-friendly products that not only look premium but also deliver measurable results. My development approach combines clean, maintainable code with modern UI/UX principles, ensuring every project is fast, secure, responsive, and optimized for real-world growth. My technical expertise includes: Frontend & Backend: PHP, Laravel, MERN Stack CMS & E-commerce: WordPress, Shopify, Magento Mobile Apps: Flutter (Android & iOS) Other Core Skills: API development, database design, payment integrations, automation, and cloud deployment From corporate websites and e-commerce systems to fully custom platforms and mobile apps, I deliver end-to-end solutions that are stable, scalable, and aligned with business goals. I work with a strategic mindset—spanning requirements analysis and system architecture through development, testing, deployment, and long-term support. My focus is always on quality, clarity, and delivering outstanding value. If you're looking for a developer who understands both technology and business, and can bring your vision to life with precision, creativity, and reliability—I’m here to help. Let’s build something exceptional together. Best regards, Arshi.g

@zaman342003

Hi — I’m Zaman. I’ll stabilise and optimise your MERN app, fix the reported bugs, restore performance to meet your Lighthouse targets, and deliver the first wave of features plus the required API integrations — all via GitFlow with review-ready PRs, unit tests, and CI-friendly commits. What I’ll do (brief): • Triage logs → fix root causes for functionality breaks. • Server & client performance (DB indexing, query tuning, caching, code-splitting, memoization). • Build scoped features as reusable, well-documented React components. • Integrate REST/GraphQL APIs and document endpoints. • Provide concise changelog, automated tests, and a staging-ready PR (no direct commits to main). I work with Next/React (hooks, context), Node, MongoDB, webpack, Postman collections and GitFlow. I can start immediately, access your repo and Postman collection, and push a clean branch for review. If that sounds right, grant repo/staging access and I’ll begin the triage.

@jonhw5

Hi there, I’ve read through your needs and am excited by the chance to dive into your MERN stack application. Tackling both those frustrating functionality bugs and the recent slow-downs is right up my alley—I’m passionate about tracing bottlenecks and delivering smooth, high-performance apps. With well-structured code, reusable React components, and precise API integrations, I’ll help your platform not only regain its stability but also unlock the next set of features you’ve planned in Figma and Jira. I always follow best practices like GitFlow, clear changelogs, and robust documentation, ensuring easy collaboration and straightforward code reviews. Let’s jump on a call so you can walk me through the backlog and tooling setup—I’ll handle the rest, prioritising reliability, clean code, and thorough communication. Looking forward to partnering with you to take your app to the next level! Best regards, Vitalii

@rajmalviyamalviy

As the lead developer at Beta IT Solution, I have spent over 7 years specializing in MERN stack and working on projects just like yours. I understand how important it is to not only resolve the current bugs but also optimize the app to meet performance benchmarks, connect new APIs, and build new features. We take a thorough approach to troubleshooting by diving deep into the existing codebase and tracing the root of issues, rather than just fixing the surface problems. Our expertise with MongoDB, Next, React, and Node.js will ensure we untangle the complexity of your application, improve its performance appreciably and create systematic code that's clean, well-commented and reusable. Additionally, GraphQL REST APIs support of your project can be documented effectively. Our experience extends beyond technical skills - With over 50 successful projects delivered globally, we have learnt how to effectively communicate with our clients from the get-go till project delivery. We understand your need for transparency, timely deliverables and ongoing support; nextProps: my team is well-versed in GitFlow and using modern React libraries(Hooks , Context) along with a good understanding of webpack that will make it easier for us to manage your codes effectively. Given the chance I am convinced that not only will we meet your expectations but we'll exceed them as we continually strive to create impactful solutions that drive measurable results.

@jay8mac

Hello [Jason McLachlan], I appreciate your insights regarding the current bugs and slowness in your MERN application. I understand your need for immediate bug fixes and performance optimization under high load while also implementing new features to advance your product. With my expertise in JavaScript, MongoDB, Node.js, React.js, and API integration, I am well-equipped to resolve existing issues, boost performance, implement new features, and connect external APIs. I ensure clean, reusable code aligned with best practices. I look forward to collaborating and delivering top-notch results to enhance your application. Regards, Jason McLachlan

@yashveer1

Hello! I’m yashveer Singh, a Full-Stack Developer with 10+ years of experience and 250+ completed projects. I’ve thoroughly reviewed your requirements and have a clear understanding of the full scope of the project. I specialize in PHP, Laravel, WordPress, Shopify, CodeIgniter, Python, React.js, Node.js, Angular, MongoDB, AI, LLM, CMS, and more. You can check my portfolio and client reviews here: https://www.freelancer.in/u/yashveer1 Let’s connect on chat so we can discuss your project in detail and get started right away.

@dragomira2

With years of experience in Full-Stack Development and an extensive skills-set that aligns perfectly with your project needs, I am confident that I can deliver exceptional results. I have a deep understanding of the MERN stack, proficient in MongoDB, Node.js, Next, React, which would enable me to seamlessly integrate with and optimize your existing codebase. Not only can I effectively diagnose and fix any existing functionality bugs or slow-downs but I'm also adept at leveraging APIs to create native, reliable connections to external sources like you need for payment-related work. Furthermore, my experience working with GitFlow would ensure organized and efficient version control throughout the project. I understand the importance of not only fixing the current issues but also moving the product forward via new feature development. With a keen eye for detail and a commitment to delivering clean and reusable code, you can rely on me to build those features exactly as scoped - even offering improved implementations if possible. My core strength lies in consistently meeting and exceeding clients' expectations while maintaining rigorous quality standards

@himanshus642

With my expansive and hands-on experience in API Integration, Node.js and MERN stack, I am confident that I can swiftly and effectively resolve the functionality bugs that your MERN application is encountering. Not only will I work to stabilize the app, but I am also eager to help take your product forward by implementing the features listed and efficiently connecting external APIs to expand your data sources for future needs like payment-related work. My proficiency with GitFlow, webpack, and modern React (including hooks, context) adds to my reliability in handling the assignment effectively. Moreover, my proactive stance towards code cleanliness and writing reusable React components perfectly aligns with this project's expectations. I have a record of not just meeting but exceeding expectations when it comes to producing clean codes that are impactful and future-ready. I believe in open communication and will prioritize a concise changelog submission along with a pull request for review without making direct commits to ensure an effective collaboration between us. Hence, I entreat you to let me offer my skills, expertise, and strong communication to resolve current issues, improve performance meet existing Lighthouse benchmarks and build out the new features required by your MERN application.