You will get Monthly Maintenance (.NET + Angular)
Project details
I provide professional support, maintenance, and improvements for web applications, with a strong focus on performance, stability, and clean code.
With 10+ years of experience working on real-world systems, I help businesses fix bugs, optimize performance, and implement enhancements in existing applications. I’m used to working with complex codebases, legacy systems, and production environments where quality and reliability matter.
My approach is structured and transparent: I analyze the issue, communicate clearly, implement solutions following best practices, and test thoroughly before delivery. Whether you need small fixes, ongoing support, or technical improvements, you can expect clear communication, realistic timelines, and solid results.
If you’re looking for a reliable developer who can take ownership of your web application and keep it running smoothly, I’m here to help.
With 10+ years of experience working on real-world systems, I help businesses fix bugs, optimize performance, and implement enhancements in existing applications. I’m used to working with complex codebases, legacy systems, and production environments where quality and reliability matter.
My approach is structured and transparent: I analyze the issue, communicate clearly, implement solutions following best practices, and test thoroughly before delivery. Whether you need small fixes, ongoing support, or technical improvements, you can expect clear communication, realistic timelines, and solid results.
If you’re looking for a reliable developer who can take ownership of your web application and keep it running smoothly, I’m here to help.
Programming Languages
ASP.NET, TypeScript, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$300
|
Standard
$600
|
Advanced
$1,000
|
|---|---|---|---|
| Delivery Time | 30 days | 30 days | 30 days |
Number of Revisions | Unlimited | Unlimited | Unlimited |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code | - | - | - |
Optional add-ons
You can add these on the next page.
Urgent issue (24h response)
+$100
Additional monthly workload
+$150
Small feature or refactor
+$200Frequently asked questions
About Diego
Senior .NET & Angular Developer | ASP.NET Core APIs & Web Apps
Malaga, Spain - 4:59 am local time
I’m a Senior Full-Stack Developer with 14+ years of professional experience, working on enterprise-level systems in finance, insurance, and HR domains. I focus on clean architecture, performance, and long-term maintainability — not quick hacks.
What I can help you with:
• Design and development of secure REST APIs using ASP.NET Core
• Angular applications (clean architecture, performance, maintainability)
• Full-stack development from scratch or improvement of existing systems
• Bug fixing, refactoring, and performance optimization
• Integration with databases, third-party services, and cloud environments
How I work:
• Clear and proactive communication
• Clean, readable, and well-tested code
• Agile mindset with frequent, reliable deliveries
• Focus on scalable and maintainable solutions
💡 New on Upwork, but not new to software development.
I bring senior-level experience and a professional approach to every project.
📩 Let’s discuss your project and define the best next steps.
Steps for completing your project
After purchasing the project, send requirements so Diego can start the project.
Delivery time starts when Diego receives requirements from you.
Diego works on your project following the steps below.
Revisions may occur after the delivery date.
Project review and analysis
I review the provided information, analyze the application and clarify requirements if needed.
Implementation and fixes
I apply the required fixes, improvements, or changes following best practices and clean code principles.