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Fiverr Pro
English
$
USD
I will develop an aspnet core web app or rest API
Werz Digital
About this gig
You need a backend or web application that is fast, secure and still maintainable in three years not a prototype that breaks at the first real user.
I build production-grade web applications and REST APIs on the Microsoft stack: ASP.NET Core 8 (Minimal API, EF Core, SignalR), PostgreSQL 16 and React on the frontend packaged with Docker and deployed on Linux servers I set up and secure myself.
Typical projects:
- Internal tools and admin panels (CRUD, roles, audit log)
- Data pipelines: CSV/Excel import with validation, mapping and deduplication
- Document generation: PDF/Excel exports from your data
- Installable PWAs for field or warehouse teams (camera, offline-capable)
- APIs for existing frontends or mobile apps
How I work: written scope before I code, a database schema you can read, OpenAPI docs, a Git repository with readme and a deployment you actually own. GDPR-conscious by default: EU hosting, no third-party trackers.
Native German, fluent English, based in Germany.
Send me a short description of what the app should do and who uses it. I'll come back with a scope, a data-model sketch and a fixed price.
Get to know Werz Digital
Werz Digital
Lukas
- FromGermany
- Member sinceAug 2026
- Avg. response time1 hour
Languages
English, German
I build custom web apps, fast websites and AI-powered automations for small businesses — self-hosted on GDPR-compliant servers in Germany, so you own your data and your stack.
Stack: .NET 8 / ASP.NET Core, PostgreSQL, React, Astro, Docker, Caddy, n8n, Claude API. Currently building a self-hosted logistics app (React PWA + .NET backend) for a live-event company and a SaaS for law firms. My own business runs on n8n workflows and a Telegram bot I built myself.
Native German, fluent English. I write clear scopes, reply within a few hours and deliver exactly what we agreed — no surprises.
Other Software Development Services I Offer
FAQ
Which technologies do you use?
C#/.NET 8 with ASP.NET Core, Entity Framework Core, PostgreSQL, React + TypeScript, Docker Compose and Caddy for HTTPS. I can also work inside an existing .NET codebase.
Do I get the source code?
Yes, always. You receive a Git repository with the complete source, a readme and deployment instructions. No vendor lock-in.
Can you deploy and host it?
Yes. Standard and Premium include deployment on your VPS (e.g. Hetzner or netcup in Germany) with Docker, automatic HTTPS and backups. I can also hand over a Docker image for your own infrastructure.
Do you build native mobile apps?
I build installable PWAs — web apps that behave like an app on phones, with camera and offline support. Not native iOS/Android apps.
