You will get reliable fixes and optimization for your .NET backend API
Project details
If your .NET backend API is failing, running slowly, or causing integration issues, I can help you fix it quickly and reliably.
I’m a Senior Backend Engineer with 15+ years of experience working with .NET, ASP.NET Core, cloud-native systems, and distributed architectures. I specialize in debugging production issues, improving API performance, and stabilizing backend systems.
What makes this project different:
• Fast troubleshooting of real production problems (errors, timeouts, failed integrations)
• Clean and maintainable fixes — not quick hacks
• Focus on performance, reliability, and scalability
• Experience working with complex backend systems and cloud environments
Whether you need to fix a critical issue, optimize performance, or stabilize your backend, I can jump into your existing system and deliver results with minimal guidance.
I’m a Senior Backend Engineer with 15+ years of experience working with .NET, ASP.NET Core, cloud-native systems, and distributed architectures. I specialize in debugging production issues, improving API performance, and stabilizing backend systems.
What makes this project different:
• Fast troubleshooting of real production problems (errors, timeouts, failed integrations)
• Clean and maintainable fixes — not quick hacks
• Focus on performance, reliability, and scalability
• Experience working with complex backend systems and cloud environments
Whether you need to fix a critical issue, optimize performance, or stabilize your backend, I can jump into your existing system and deliver results with minimal guidance.
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$95
|
Standard
$350
|
Advanced
$900
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$75 - $150Frequently asked questions
About Luis
Senior .NET Backend Engineer | APIs, AWS, AI-Assisted Development
Bogota, Colombia - 12:56 pm local time
I specialize in backend systems, API integrations, distributed architectures, and cloud-native applications. Most of my recent work has focused on designing and improving microservices-based platforms, solving complex production issues, and delivering reliable solutions in high-demand environments.
I can quickly understand existing systems and contribute without requiring extensive hand-holding — whether the work involves debugging critical backend issues, improving API performance, integrating AI workflows, or designing scalable cloud architectures.
My technical stack includes:
- .NET / ASP.NET Core / C#
- AWS (Lambda, S3, EC2, SQS, API Gateway)
- PostgreSQL / SQL Server / Redis
- RabbitMQ / MassTransit
- React / TypeScript / Node.js
- Docker / CI/CD
I also actively use AI-assisted engineering workflows with ChatGPT, GitHub Copilot, and Claude to accelerate development, improve code quality, and streamline architecture and debugging tasks.
Additionally, I have training in secure software development (OWASP), data protection awareness, and compliance-oriented environments, which helps me build systems with security and reliability in mind.
If you need a senior engineer who can jump into an existing project, solve problems fast, and deliver clean, maintainable solutions — I’d be happy to help.
Steps for completing your project
After purchasing the project, send requirements so Luis can start the project.
Delivery time starts when Luis receives requirements from you.
Luis works on your project following the steps below.
Revisions may occur after the delivery date.
Issue Analysis & Diagnosis
Review the backend/API, analyze logs, and identify the root cause of the issue.
Fix Implementation
Apply fixes or improvements to resolve errors, performance issues, or integration problems.