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Dmitrij R.
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Dmitrij R.

Senior .NET Developer | ASP.NET Core | Angular | AI Integration

Senior .NET Backend Architect | ASP.NET Core | AI Integration I am a Senior .NET Engineer with 10+ years of experience designing and delivering scalable backend systems and complex distributed applications. My core strength is backend architecture and system design. I build production-ready ASP.NET Core systems that remain stable, maintainable, and extensible long after the initial release. I don’t just write code - I design systems that evolve. 🔹 What I Do On most projects, I take full ownership of backend development: • Design scalable system architecture from scratch • Build secure ASP.NET Core Web APIs • Implement clean domain-driven business logic • Structure projects using Clean Architecture and SOLID principles • Optimize SQL Server performance and data models • Modernize and refactor legacy .NET systems • Lead technical decisions and long-term architectural planning I focus on clarity, maintainability, and long-term scalability - not quick hacks. 🔹AI & Intelligent Systems Integration I integrate real AI capabilities into production products: • OpenAI API integrations • AI agents & automation workflows • RAG pipelines & vector databases • Semantic Kernel & tool orchestration • Embedding AI features into SaaS platforms AI is not a buzzword in my work - it’s a structured, production-ready implementation aligned with business goals. 🔹Core Technology Stack Backend & Architecture: • C# • .NET Core / .NET 6 / .NET 7 / .NET 8 • ASP.NET Core • Entity Framework Core • SQL Server • Microservices & distributed systems • Clean Architecture (DDD, SOLID) • Performance optimization • Legacy modernization Frontend (when required): • React • Angular • Blazor • JavaScript / TypeScript Primary specialization: backend architecture. 🔹What You Get Working With Me • Clear technical planning before development begins • Clean, maintainable C# code • Scalable REST APIs designed for growth • Structured backend architecture • Reliable AI integration • Transparent communication • Predictable delivery 🔹Best Fit Projects • Building scalable backend systems from scratch • Developing ASP.NET Core Web APIs • AI integration into existing products • SaaS platform architecture • Migrating legacy applications to .NET Core • Long-term product development partnerships If you are building a serious product and need a Senior .NET Backend Architect who can design robust systems and integrate modern AI capabilities - I’d be glad to contribute.

🇺🇦Zaporozhye, Ukraine$25/hr100% JSS5.00 (3)Since Jul 2018
MRR
$5,127
🌍#5,237/363K
🇺🇦#379/12.9K
Recent Earnings
$30,762
🌍#5,237/363K
🇺🇦#379/12.9K
Total Earnings
$290K
🌍#7,642/363K
🇺🇦#653/12.9K
Avg. Per Project
$57,914
🌍#632/363K
🇺🇦#69/12.9K
Recent Projects
2
0f2h
🌍#240K/363K
🇺🇦#9,458/12.9K
Total Projects
5
1f10h
🌍#240K/363K
🇺🇦#9,458/12.9K
MRR Performance Over Time
$50k$25k$0
6 mo ago3 mo agoNow
Coming SoonGathering historical data
World Skill Rankings
of 86
#7
Distributed ComputingTop 7%
#15Web API
#23SQL Programming
#30Entity Framework
#33Blazor
#38Performance Optimization
#50Software Architecture
#51Unity
#65ASP.NET Core
#71Microservice
#81Microsoft SQL Server
#104REST API
#114.NET Core
#177Generative AI
#184Angular
#209API Development
#218OpenAI API
#236C#
#341Artificial Intelligence
#442TypeScript
#995JavaScript
🇺🇦Ukraine Skill Rankings
of 21
#1
SQL ProgrammingTop <0.01%
#2Distributed Computing
#3Web API
#3Microsoft SQL Server
#6Entity Framework
#6Generative AI
#7ASP.NET Core
#7Blazor
#7REST API
#9Performance Optimization
#9Microservice
#9Unity
#10Software Architecture
#11.NET Core
#12OpenAI API
#18Artificial Intelligence
#19API Development
#23C#
#24Angular
#60TypeScript
#144JavaScript
Dmitrij R. — Top 3% in Ukraine | UpworkMRR