You will get a production-ready REST API in C# (.NET)
Rising Talent
Rising Talent
Project details
I build secure, scalable, and production-ready REST APIs using C# and ASP.NET Core.
If you’re building a SaaS platform, MVP, internal tool, or scalable backend system, I design clean, maintainable architectures focused on performance, security, and long-term stability.
My APIs include structured layering, proper validation, authentication (JWT/OAuth2), logging, and full documentation (Swagger/OpenAPI). I focus on writing clean, testable code that is ready for real-world deployment.
Whether you need a solid backend foundation or a complex API with authentication and integrations, I deliver solutions designed for growth — not quick fixes.
Clear communication, structured development, and technical reliability are my priorities.
If you’re building a SaaS platform, MVP, internal tool, or scalable backend system, I design clean, maintainable architectures focused on performance, security, and long-term stability.
My APIs include structured layering, proper validation, authentication (JWT/OAuth2), logging, and full documentation (Swagger/OpenAPI). I focus on writing clean, testable code that is ready for real-world deployment.
Whether you need a solid backend foundation or a complex API with authentication and integrations, I deliver solutions designed for growth — not quick fixes.
Clear communication, structured development, and technical reliability are my priorities.
Programming Languages
ASP.NET, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$220
|
Standard
$550
|
Advanced
$1,200
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 0 | 0 | 0 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Database Design & Optimization
(+ 5 Days)
+$300
Docker Deployment Setup
(+ 2 Days)
+$250
Swagger / OpenAPI Documentation
(+ 1 Day)
+$150Frequently asked questions
About Bernardo
Senior Full-Stack Engineer | Secure SaaS, AI Systems & Scalable Archit
Portimao, Portugal - 12:35 am local time
I'm a Full-Stack Engineer specialized in .NET (C#), Kubernetes, and modern web stacks. I help companies design, build, secure, and scale applications that are ready for real-world traffic.
What I can help you with:
• Design and build ASP.NET Core Web APIs
• Architect modular monoliths and scalable backend systems
• Kubernetes cluster setup (from scratch or production hardening)
• Secure, production-grade Kubernetes environments
• CI/CD with GitHub Actions
• Docker & containerization
• SQL Server / PostgreSQL / MongoDB database design
• React / Vite / Tailwind frontend development
• Full-stack application development
• RabbitMQ & distributed systems
• Cloud deployments (GCP & self-managed infrastructure)
I don’t just write code — I design systems with performance, security, and long-term maintainability in mind.
If you need someone who understands both development AND infrastructure, we should talk.
Steps for completing your project
After purchasing the project, send requirements so Bernardo can start the project.
Delivery time starts when Bernardo receives requirements from you.
Bernardo works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements & Planning
We review your requirements, define the API structure, authentication model, database needs, and architecture approach.
Architecture & Development
I implement the API using clean architecture principles, secure authentication, validation, logging, and proper error handling.