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.
Earnings and projects
Last 6 months ÷ 6
Last 6 months: $31k
Billed in all: $312,396$312k
$16k in the last 6 months
Across 11 contracts
Earnings, last 30 days
Skill rankings: Top 2% in Unity
Ranked by MRR among everyone on Upwork with the skill.
- #8Distributed Computing107 freelancers · 🇺🇦 #2Top 7%🇺🇦#2 of 3
- #11Web API670 freelancers · 🇺🇦 #2Top 2%🇺🇦#2 of 26
- #26SQL Programming1,149 freelancers · 🇺🇦 #1Top 2%🇺🇦#1 of 22
- #27Blazor656 freelancers · 🇺🇦 #6Top 4%🇺🇦#6 of 31
- #31Entity Framework1,047 freelancers · 🇺🇦 #7Top 3%🇺🇦#7 of 72
- #34Performance Optimization1,100 freelancers · 🇺🇦 #8Top 3%🇺🇦#8 of 103
- #47Unity2,992 freelancers · 🇺🇦 #7Top 2%🇺🇦#7 of 216
- #56Software Architecture964 freelancers · 🇺🇦 #10Top 6%🇺🇦#10 of 70