You will get your ASP.NET Core / Web API bug fixed (fast & tested)
Project details
You’ll get a fast, safe, and well-documented fix for your ASP.NET Core / Web API issue.
I reproduce the bug, identify the root cause with structured logs, and deliver a minimal, readable patch. For Standard/Premium packages I also add automated tests (xUnit) and a short handover README so the fix is easy to review and maintain.
I work on a feature branch or staging environment, keep changes reversible, and never touch production without a backup/maintenance window.
Typical issues I fix: API errors and 500s, EF Core/SQL problems, auth/JWT issues, file/email integrations, performance hotspots, and CI/CD hiccups.
The goal is simple: no more runtime crashes, clear outcomes (404/400/200), and a small, clean diff you can merge with confidence.
I reproduce the bug, identify the root cause with structured logs, and deliver a minimal, readable patch. For Standard/Premium packages I also add automated tests (xUnit) and a short handover README so the fix is easy to review and maintain.
I work on a feature branch or staging environment, keep changes reversible, and never touch production without a backup/maintenance window.
Typical issues I fix: API errors and 500s, EF Core/SQL problems, auth/JWT issues, file/email integrations, performance hotspots, and CI/CD hiccups.
The goal is simple: no more runtime crashes, clear outcomes (404/400/200), and a small, clean diff you can merge with confidence.
Programming Languages
JavaScript, ASP.NET, C#Coding Expertise
Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$49
|
Standard
$99
|
Advanced
$199
|
|---|---|---|---|
| Delivery Time | 1 day | 2 days | 4 days |
Number of Revisions | 1 | 2 | 3 |
Bug Investigation | |||
Fix Documentation | - | ||
Detailed Code Comments | - | - |
Optional add-ons
You can add these on the next page.
Additional Revision
+$15
Fix Documentation
+$15
Detailed Code Comments
+$10Frequently asked questions
About Djordje
ASP.NET Core Backend | REST APIs, EF Core, SQL Server, Docker/Nginx
Foca, Bosnia and Herzegovina - 10:05 am local time
I focus on clean architecture, authentication/authorization (JWT/Identity), performance, and reliable deployment (Docker/Nginx or IIS).
What I can help with:
- Build/extend REST APIs (CRUD + best practices + Swagger/OpenAPI)
- Auth & roles (JWT/Identity), refresh tokens, protected admin endpoints
- SQL Server + EF Core performance (indexes, constraints, query optimization)
- Real-time features with SignalR (notifications, dashboards)
- Deployments (Linux VPS + Nginx/Docker or Windows/IIS) + hardening basics
Process: quick audit → clear plan → implementation → tests → short handover video/docs.
Steps for completing your project
After purchasing the project, send requirements so Djordje can start the project.
Delivery time starts when Djordje receives requirements from you.
Djordje works on your project following the steps below.
Revisions may occur after the delivery date.
Kickoff & access confirmed
Repo/ZIP, versions (.NET/EF/DB), exact reproduction steps agreed.
Reproduce the issue & capture logs
Run locally or on staging; collect stack trace, failing requests (cURL/Postman).