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$
USD
I will develop backend web app with rest API and database integration as your developer
Steffen Wanne
About this gig
Most web applications fail not because of design but because of a weak backend, poor database structure, and broken API connections.
If you need a reliable, scalable backend system that actually powers your web app smoothly, you're in the right place.
I specialize in building secure backend web applications with clean architecture, efficient databases, and seamless API integration that help your business run without errors or data issues.
What I Will Do For You:
- Build backend logic for your web application
- Develop secure and scalable REST APIs
- Database Integration (MySQL, MongoDB, PostgreSQL)
- Connect third-party APIs (payment, email, SMS,)
- Authentication systems (login/signup, JWT)
- Fix backend bugs and optimize performance
- Clean, maintainable, and well-structured code
Technologies I Use:
- Backend: Node.js, Express.js, PHP, Laravel
- Database: MySQL, MongoDB, PostgreSQL
- API: REST API, JSON, third-party integrations
- Postman, Git
Whether you're building a startup MVP, SaaS platform, admin dashboard, or custom web app, I will help you create a backend that actually works flawlessly.
Send me a message before ordering so I can understand your project and deliver exactly what you need.
Get to know Steffen Wanne
Steffen Wanne
Helping startups and businesses build, fix, and optimize mobile and web apps
- FromGermany
- Member sinceApr 2026
- Avg. response time1 hour
Languages
English, German, Italian, Spanish
Hi, I'm Steffen Wannemaker, a professional mobile app developer and full-stack web developer. I specialize in Flutter mobile apps and modern web applications. I help startups and businesses fix bugs, optimize performance, and build scalable front-end and back-end systems. With solid experience in React, APIs, and database integration, I deliver clean, efficient, and reliable solutions. If your app needs speed, stability, or a fresh build, message me now and let’s get it done.
My Portfolio
FAQ
What do you need to start my backend project?
I need a clear description of your project, required features, API needs, and any reference or documentation you have. If you're not sure, I can guide you.
Can you work on my existing backend or fix issues?
Yes, I can debug, optimize, and add new features to your existing backend system or API.
Which technologies do you use for backend development?
I work with Node.js, Express, PHP, and databases like MySQL, MongoDB, and PostgreSQL depending on your project needs.
Will you integrate third-party APIs into my system?
Yes, I can integrate payment gateways, email services, SMS APIs, and other third-party services seamlessly.
Is the backend secure and scalable?
Yes, I follow best practices for authentication, data validation, and clean architecture to ensure your backend is secure and scalable.
Do you provide API documentation?
Yes, I provide basic API documentation and tested endpoints (via Postman or similar tools) so you can easily use the system.
Do you offer support after delivery?
Yes, I provide post-delivery support based on your package, and I’m available for future updates if needed.
Can you build a full backend for my web app or SaaS project?
Absolutely. I can develop complete backend systems including APIs, database structure, authentication, and integrations.
