MERN & NestJS Custom App

@point2solutions

MERN & NestJS Full-Stack Application Development Hello, I understand that you need a senior full-stack developer to build a custom green-field application using the MERN stack with NestJS. The project requires end-to-end ownership, from architecture and development to testing, deployment, and third-party integrations, with a focus on scalability, security, and maintainable code. Key Features: ➜ React Frontend Development ➜ NestJS Backend Development ➜ Secure User Authentication (JWT/OAuth) ➜ Role-Based Access Control (RBAC) ➜ MongoDB Database Design & Integration ➜ REST & GraphQL API Development ➜ Payment Gateway Integration ➜ Email Service Integration Let's chat and discuss your project in more detail and start working ASAP. Thanks

@vishal1145

Your analytics pipeline will bottleneck if you're aggregating MongoDB documents in real-time without pre-computed views or a caching layer. That will tank performance once you hit 10K+ records per report. Quick questions - are you planning time-series data storage for metrics, or will everything live in MongoDB collections? And what's your expected concurrent user load at launch so I can size the NestJS worker pool correctly? Here is the architectural approach: - NESTJS + MONGODB: Implement aggregation pipelines with indexed queries and Redis caching to keep dashboard load times under 500ms even at scale. - JWT + RBAC: Build token refresh flows with role guards at the controller level so permissions enforce cleanly across REST and GraphQL resolvers without duplication. - THIRD-PARTY INTEGRATIONS: Abstract payment and email providers behind service interfaces so you can swap Stripe for another gateway or SendGrid for Postmark without touching business logic. I've built 4 production NestJS platforms that scaled from MVP to 50K+ users without architectural rewrites. Let's schedule a 20-minute call to align on your analytics schema and deployment strategy before kickoff.

@himanshu0818

Hello there, This sounds like a solid green-field build, and I’d love to take ownership of the full MERN + NestJS stack. I have 15+ years of experience building custom platforms (non-eCommerce, non-social) where architecture, scalability, and clean integrations are key. I regularly work with React (hooks), NestJS, MongoDB, and TypeScript, and I use AI in my workflow to speed up development while maintaining high quality and clean code. I can handle secure auth (JWT/OAuth), role-based systems, analytics pipelines, and third-party integrations with a structured, maintainable approach. I also ensure proper testing, API documentation (Swagger), and smooth CI/CD deployments. For approach: I typically start with architecture + data flow design, then move into modular backend setup and parallel frontend development. A solid first release can be planned within a few weeks depending on feature depth. Let’s chat, Himanshu

@mrresearcher99

Hello, With 10 years of experience in full-stack development, I specialize in building scalable, production-ready applications using React.js, Node.js, REST APIs, MongoDB, and cloud deployment. For your project, I recommend React with TypeScript on the frontend and NestJS on the backend with MongoDB, following a modular architecture that supports scalability, maintainability, and future feature expansion. My approach focuses on implementing secure authentication with role-based access control, clean third-party API integrations, robust analytics and reporting, and fully documented REST APIs using Swagger. I would welcome the opportunity to discuss your project and share how I would approach building a reliable, production-ready application. Best regards

@santoshkumars17

As an experienced Full Stack Web and Mobile App Developer with over 5 years of experience, I have a versatile skill set that aligns perfectly with the needs of your project. My expertise spans across the full MERN (MongoDB, Express, React, Node.js) stack, which includes NestJS too. I've built scalable and high-quality web and mobile applications using a range of technologies, making me uniquely suited to understand the tech landscape you've outlined. I understand that a successful product is about more than just coding. It requires strategic thinking and architectural input. Drawing from my years in this field, I am confident in providing you not only top-notch coding but also valuable insights to optimize your app's architecture. Additionally, my proficiency in API integration and database management will aid in ensuring smooth interactions with third-party services while maintaining clean code and efficient performance. I always adhere to industry-accepted best practices be it for documentation (OpenAPI/Swagger) or setting up CI/CD pipelines.

@TechizeBuilder

Dear Client, I read "MERN & NestJS Custom App" carefully and understand what you're looking to achieve with this Mern Stack Development project. My hands-on experience with JavaScript, NoSQL Couch & Mongo, Node.js, AngularJS, MongoDB 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

@technologiesit

As an eight-year veteran in the full stack development space, my work has revolved around delivering bespoke digital solutions using modern technologies. I specialize in MERN and NestJS stack, and I strongly believe that my experience dovetails seamlessly with the goals of your custom app project. With several years of hands-on experience integrating third-party services, designing authenticate systems, and setting up robust analytic pipelines - I think my expertise plugs perfectly into what you seek. My proficiency in TypeScript and proficiency with Git & CI/CD(GitHub Actions) pipeline will ensure efficient and effective coding, testing and deployment process. Not only am I conversant with key technologies like JWT- OAuth, but I'm also adept at crafting clean, maintainable integrations using tools like Swagger/OpenAPI. On top of my technical ability, what sets me apart from many is my attention to detail and clarity of communication. Throughout the project's life-cycle, you'll find me engaging proactively, asking vital clarifying questions when necessary and keeping you apprised of every milestone achieved. And as the project's focus is not just about 'writing code' but designing a sustainable architecture too- our partnership will guaranteed to create an end-product that excels in performance while being secure.

@mayankinnovative

With my two decades of experience driving improvements on PHP-based applications, I'm confident in my ability to get your greenfield MERN and NestJS build off the ground. Over 5+ years, I've honed my expertise in back-end development, API integration, and management of proprietary platforms – all skills that align perfectly with your current requirements. You can rely on me for everything: from implementing secure user authentication and third-party service integration to fortifying your app's data analytics & reporting pipelines. My knowledge extends beyond just writing code; I am also adept at clean documentation and ensuring code that's ready for production. With TypeScript and Git already being employed in your project, we are in day one on the same page here – let's use this synergy to our mutual advantage. Lastly, what sets me apart is my long-term approach to projects; I tar forward to deliver solutions which will remain stable and scalable as your business thrives. Let's not just solve today's problem but create a platform that accommodates your envisioned growth even five years down the line.

@monicasynthesis

Hello, I’m interested in your project and confident I can build your custom MERN + NestJS application from the ground up. I have 5+ years of experience in React, NestJS, Node.js, MongoDB, TypeScript, and full-stack development. I will ensure: * High-quality work * Secure, scalable architecture * Clean, fully typed code * Clear communication * Revisions until you're satisfied Warm Regards, Monica Bhatia

@albertc1996

Hi. I understand you're looking for a senior engineer who can contribute beyond implementation—helping shape the system architecture while delivering a production-ready MERN + NestJS application with secure authentication, analytics, third-party integrations, and well-tested APIs. I have 8+ years of full-stack experience building scalable applications with Node.js, TypeScript, React, NestJS, REST APIs, GraphQL, MongoDB, PostgreSQL, authentication systems, and complex third-party integrations. I'm comfortable owning projects from architecture and database design through deployment, CI/CD, and long-term maintenance. For this project, I'd recommend React + TypeScript, NestJS, MongoDB, JWT/OAuth, Swagger/OpenAPI, GitHub Actions, and a modular, domain-driven architecture that supports future expansion without major refactoring. Estimated timeline: 4–8 weeks for a production-ready MVP A couple of questions: are the analytics dashboards based on transactional data within your platform, or will they aggregate data from external services as well? Also, have you already selected the payment provider and proprietary API specifications, or will those be finalized during development? I'd be happy to discuss the architecture, milestones, and delivery plan to ensure the first release is built on a solid foundation.

@gauravl3

With over 5 years of experience specializing in MERN and NestJS stacks, I believe I'm the best fit for your custom app project. My team and I have a proven record of delivering production-grade solutions in line with the latest industry standards while leveraging powerful technologies like React, Node.js, and MongoDB. Our expertise doesn't stop there - we're proficient with TypeScript, Git, CI/CD pipelines as well as API documentation generation using Swagger/OpenAPI. Beyond just coding, we prioritize robust architecture and performance optimization while maintaining a focus on security for your users. Our skills extend to all aspects of development including restful APIs, third-party integrations like payment gateways, email services etc.; else you've mentioned here. Uniquely we also bring advanced capabilities in AI including Large Language Models (LLMs), AI agents etc. We can leverage these to build intelligent functionalities like data analytics pipelines and reporting that will provide valuable insights to your end-users thus creating a truly exceptional product. Moreover, as can be seen from our portfolio, we have an extensive experience in AWS, Azure and Google Cloud. Distinctly incorporating CI/CD pipelines (like GitHub Actions) for efficient and reliable deployments.

@sakshitiwari2323

Hi, We are a specialized development company based in Indore—India's fastest-growing IT hub. Our senior stack engineers bring extensive experience delivering robust, production-ready MERN and NestJS systems, making us the ideal partner to architect your custom platform from scratch. Here is our approach to solving your technical requirements: Clean Architecture: We will design a modular NestJS backend coupled with a fully-typed React frontend, implementing secure JWT/OAuth role-based access control. Analytics Pipelines: We will engineer optimized MongoDB aggregation pipelines and integrate powerful charting libraries for seamless in-app metrics visualization. Robust Integrations: Third-party APIs, payments, and emails will be connected via clean, maintainable service layers with full Swagger/OpenAPI documentation. DevOps & Testing: Every module will be backed by comprehensive Jest unit/integration tests and deployed via your GitHub Actions CI/CD pipelines. Let’s connect to share our architectural insights, estimate your first release timeline, and kick off the design phase!

@NEHABHAT92

Building custom applications using the MERN and NestJS stacks is not only my speciality but also what I am truly passionate about. With over nine years of expertise in web and mobile development, and I have had numerous opportunities to work with similar technologies your project demands. My proficiency spans from establishing secure user authentication, setting up data analytics pipelines, integrating various third-party services to adhereing to best practices in both NestJS and React with thorough understanding of TypeScript and Git. I understand that a well-documented and robustly tested end-product is essential for any projects' success. I can ensure that all features will be scrupulously tested, fully typed and backed by clear API documentation, generated through Swagger/OpenAPI. Moreover, alongside providing top-quality work, I offer an effective cost package and a solid three month support after the delivery of the project. And yes,you guessed it right - I also excel at SEO services! In conclusion, hiring me would mean an opportunity to partner up with a seasoned developer who is genuinely enthusiastic about turning your vision into reality through clean code, tested solutions, efficient communication and meticulous attention to detail.

@sanarena

Hi, I’m Armin Nikdel. I’ve delivered several production MERN + NestJS systems and can own this green‑field build end‑to‑end. For the stack you’ve chosen—React, NestJS, MongoDB, TypeScript, and GitHub Actions—I’ll keep the architecture modular so each integration and reporting pipeline stays maintainable as the product evolves. I’ll start with role‑based auth using JWT access/refresh tokens and NestJS guards, then scaffold the analytics pipeline with aggregation queries in MongoDB and a lightweight React charting library so users see key metrics directly in the dashboard. Third‑party integrations (payment, email, proprietary REST API) will be wrapped in dedicated NestJS modules with retry logic, server‑side validation, and parameterized queries where data is stored. Every endpoint will be covered by unit and integration tests, Swagger docs will be auto‑generated, and the CI/CD pipeline you already have will deploy to staging once tests pass. I can deliver the first release in about two weeks at INR 28500. One thing that would help me lock the scope: do you already have the proprietary REST API’s spec and sandbox credentials, or will those be provided after the project starts?

@ciss26

Hello there, Hope you are doing well I'd love to help build your custom MERN & NestJS application from the ground up. With 10+ years of experience in full-stack development, our team specializes in scalable, secure, and high-performance web applications using React, NestJS, Node.js, and MongoDB. Key Features Secure User Authentication (JWT/OAuth) Role-Based Access Control (RBAC) Custom Dashboard & Analytics Interactive Reports & Data Visualization Third-Party API Integrations Payment Gateway Integration Email & Notification Services REST & GraphQL APIs Swagger/OpenAPI Documentation Unit & Integration Testing CI/CD Pipeline Integration Performance Optimization Secure & Scalable Architecture Deployment & Staging Support Recommended Tech Stack Frontend: React.js, TypeScript Backend: NestJS, Node.js Database: MongoDB Authentication: JWT, OAuth API: REST & GraphQL Documentation: Swagger/OpenAPI Testing: Jest CI/CD: GitHub Actions Hosting: AWS / Azure / DigitalOcean Version Control: Git & GitHub Looking forward to working with you! Best Regards, Dheeraj K.

@anshumanvermaUK

Hi, I have experience with React, Node.js, NestJS, TypeScript, MongoDB, REST APIs, GraphQL, JWT authentication, and full-stack SaaS application development. My recent work includes enterprise platforms, AI-powered applications, authentication systems, payment integrations, analytics dashboards, and scalable backend architectures with production-ready deployments. Thanks, Anshuman

@bilal0356

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on JavaScript, NoSQL Couch & Mongo, Node.js, AngularJS, MongoDB, GraphQL, MERN, REST API Please come over chat and discuss your requirement in a detailed way. Thank You

@jaroslavcaprata

Hi, there. I have extensive experience building custom full-stack applications with React, Node.js, NestJS, and MongoDB, from architecture design to production deployment. ✔ Secure authentication and role-based access control (JWT/OAuth) ✔ Scalable REST/GraphQL APIs with fully typed TypeScript code ✔ Analytics dashboards and reporting pipelines for in-app data visualization ✔ Clean integration with payment, email, and third-party/proprietary APIs ✔ Swagger/OpenAPI documentation, unit/integration testing, and CI/CD workflows ✔ Strong focus on maintainable architecture, performance, and long-term scalability Since this is a green-field project, I can also contribute to system design, domain modeling, and best practices from the early stages. Looking forward to discussing your product vision and technical requirements in more detail. Thanks, Jaroslav Caprata

@Rupal878

Hi, I have been working with React, Node.js, NestJS, MongoDB, and TypeScript for several years, building custom web applications from the ground up. I enjoy working on green-field projects where the architecture is just as important as the implementation. I can help design a scalable backend, build secure authentication with role-based access, integrate third-party services in a modular way, and develop a clean React frontend that is easy to maintain. A few questions: Do you already have the application architecture and database design, or would you like me to be involved in defining those as well? Which payment gateway and email service are you planning to use? Is the first release focused only on the features mentioned, or do you already have additional modules planned for the MVP? Portfolio: https://www.freelancer.in/u/Rupal878 Looking forward to discussing your project. Rupal Saini