You will get Full stack developer | Debugging & Problem Solving (.NET + Angular)
Project details
This service is perfect when you’re blocked by a technical issue. I’ll investigate the backend, frontend, or integration layer and help you solve the problem efficiently. Full stack developer
Programming Languages
JavaScript, ASP.NET, C#Coding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included $100
These options are included with the project scope.
$100
- Delivery Time 5 days
- Number of Revisions 2
- Bug Investigation
- Fix Documentation
- Detailed Code Comments
2 reviews
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JT
Janice T.
Mar 5, 2026
QuickBooks Desktop SDK Developer Needed for Invoice Creation Tool
Andrey built a custom QuickBooks Desktop utility for us to automate invoice draft creation from structured Word and Excel documents. The project required careful parsing logic and tight alignment with our internal workflow, and he handled it very well.
Andrey is very detail-oriented and was responsive throughout the project. Communication was clear and professional at every stage — he is a clear communicator who explains technical decisions in a practical way. He made thoughtful, cost-effective choices that kept the project efficient without overengineering.
He is clearly dedicated to quality, and the final tool works exactly as intended and has already reduced manual entry for our accounting team.
We would gladly work with him again on similar projects.
Andrey is very detail-oriented and was responsive throughout the project. Communication was clear and professional at every stage — he is a clear communicator who explains technical decisions in a practical way. He made thoughtful, cost-effective choices that kept the project efficient without overengineering.
He is clearly dedicated to quality, and the final tool works exactly as intended and has already reduced manual entry for our accounting team.
We would gladly work with him again on similar projects.
DS
Dmytro S.
Jan 27, 2026
.NET Core + Angular Application to Fix Bugs & Small Improvements
Andrey did an excellent job helping us with our enterprise web app built on .NET 8 / ASP.NET Core and Angular 17. The tasks included fixing several UI issues, resolving a backend API problem, and adding a small filter/search feature.
He demonstrated strong expertise in .NET / C#, ASP.NET Core Web API, and Angular, quickly identifying root causes and implementing clean, efficient solutions. The fixes improved user experience, and the new functionality works perfectly. PRs were well-documented and easy to review.
It was a pleasure working with someone so responsive, detail-oriented, and reliable. I’d gladly collaborate again on future .NET / Angular projects. Highly recommend!
He demonstrated strong expertise in .NET / C#, ASP.NET Core Web API, and Angular, quickly identifying root causes and implementing clean, efficient solutions. The fixes improved user experience, and the new functionality works perfectly. PRs were well-documented and easy to review.
It was a pleasure working with someone so responsive, detail-oriented, and reliable. I’d gladly collaborate again on future .NET / Angular projects. Highly recommend!
About Andrey
Full stack Developer | .NET developer | Web developer
100%
Job Success
Kharkiv, Ukraine - 2:18 am local time
🏆 CORE STRENGTHS & IMPACT
🔹 Enterprise Backend: Architecting stable ASP.NET Core and .net services with 99.9% uptime. By leveraging С# for mission-critical logic, I ensure that every Azure deployment is optimized for high-load performance and military-grade security.
🔹 Modern Frontend: Developing fast Angular interfaces with 95+ Google PageSpeed scores. I bridge the gap between complex Javascript logic and seamless UI, ensuring that my ASP.NET integrations remain responsive and user-friendly.
🔹 Cloud & Data: Optimizing Azure SQL and MongoDB databases, reducing query latency by 45%. My deep knowledge of the .net ecosystem and С# allows me to handle complex migrations from legacy platforms to modern Angular applications.
🔹 Full Stack Integration: Seamless API integration for distributed services. I use Javascript to build interactive dashboards and ASP.NET to process heavy data, ensuring that your С# codebase remains maintainable and scalable.
⚡ COLLABORATIVE LEADERSHIP
I thrive in environments where I can lead engineering teams as a Senior .net Architect. I frequently coordinate the transition of corporate ERP portals to Azure, ensuring that the Angular frontend and ASP.NET backend are perfectly synchronized through clean Javascript communication layers.
My mastery of С# and the broader .net framework allows me to achieve a 40% reduction in operational costs for my clients. Whether it’s a high-performance Angular portal or a secure Azure environment, I focus on delivering a comprehensive ASP.NET solution. I ensure that every line of Javascript and С# code I write is extensible and ready for future growth.
🛠 TECH STACK:
💻 Backend: С#, .net, ASP.NET Core, Web API, SignalR, Python.
🌐 Frontend: Angular, Javascript, TypeScript, HTML5, CSS3, React.
☁️ Cloud/DB: Azure, ASP.NET Identity, SQL Server, PostgreSQL, Docker.
🛠 Tools: Azure DevOps, Angular CLI, Git, CI/CD pipelines.
⭐ If you need a Senior .net Developer who confidently masters С#, ASP.NET, and Angular to deliver real business value via Azure and Javascript — let’s connect!
Steps for completing your project
After purchasing the project, send requirements so Andrey can start the project.
Delivery time starts when Andrey receives requirements from you.
Andrey works on your project following the steps below.
Revisions may occur after the delivery date.
Common Issues I Fix
- API errors (400/500/timeout) - EF Core / database bugs - Incorrect Angular data binding - Authentication issues (JWT, cookies) - CORS problems - Build and environment issues - Broken forms and routing