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I will mern stack developer custom web app react node js mongodb rest API development
Ben Don
About this gig
Need a MERN stack developer to build a custom web app or improve an existing project? I develop web applications using React.js, Node.js, Express.js and MongoDB.
Services include React frontend development, Node.js backend development, REST API development, database integration, responsive interfaces, form validation, authentication, bug fixes and API integration. I can build dashboards, customer portals, booking features, SaaS MVP module and web application features.
I focus on communication, clean, maintainable code and functionality that matches the agreed scope. Before starting, we will confirm requirements, deliverables and timeline.
To begin, share your project brief, required features, design references, preferred technology stack, and existing code or API documentation. I will review the details and clarify what is included before work starts.
Please contact me before ordering complex applications, payment systems or multi-user platforms. These may need custom quote and milestones. Delivery depends on the agreed scope.
Respect third-party rights
Please be aware that it is against Fiverr's policies for sellers to include themes, templates, or any other elements that infringe third-party rights or applicable laws in the delivered work. Read more about in our Guide to Responsible Digital Creation.
Get to know Ben Don
Ben Don
Full Stack Web Developer MERN Stack SaaS Applications API Integration
- FromUnited States
- Member sinceOct 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German, Italian
I build custom web apps using React.js, Node.js, Express.js and MongoDB. Services include MERN stack development, frontend and backend development, REST API integration, SaaS MVPs, CRM modules and admin dashboards. I focus on responsive interfaces, clear communication, maintainable code and practical solutions shaped around your requirements. Share your goals, features and design references, and I’ll help define scope and a delivery plan. I value honest updates, testing and responsible teamwork.
FAQ
1. What is included in your MERN stack development service?
I develop custom web application features using MongoDB, Express.js, React.js and Node.js according to your selected package.
2. Can you build a React.js web application?
Yes, I can build responsive React interfaces and connect them to backend services according to your project requirements.
3. Do you provide Node.js backend development?
Yes. Backend services can include application logic, API endpoints, database integration and input validation.
4. Can you develop REST APIs?
Yes. I can create or integrate REST APIs based on the agreed endpoints, data requirements and project scope.
5. Do you work with MongoDB?
Yes. MongoDB integration and data modeling can be included where suitable for your web application.
6. Can you fix bugs in an existing MERN application?
Yes. Share the error details, relevant code and expected behavior so I can assess the issue before you order.
7. Can you develop a SaaS MVP?
Yes. I can build a clearly scoped MVP with selected frontend, backend and database functionality.
8. Can you add login and user authentication?
Authentication can be included when agreed in advance, with the required user roles and security needs clearly defined.
9. Can you integrate third-party APIs?
Yes. Please provide the API documentation, access requirements and the functionality you need integrated.
10. What do you need before starting?
Please share your brief, required features, design references, preferred technology stack, timeline and any existing code.
