git commit -m "Backend Engineer | Systems Integrator | Clean Architecture Advocate"I’m a backend-focused software engineer who designs and builds scalable APIs, system integrations, and automation-driven solutions.
I specialize in turning complex business requirements into reliable backend systems.
- 🔭 Building event-driven architectures (Webhooks, Background Workers, OAuth flows)
- ⚙️ Strong focus on C#, ASP.NET Core, and SQL Server
- 🔐 Experienced with authentication & identity systems (Keycloak, token lifecycle management)
- 📊 Data-driven mindset (SQL optimization, stored procedures, DAX logic)
- 🐳 Docker-first development workflow
- 🌍 Open to freelance, remote, and high-impact backend opportunities
- Design and build RESTful APIs
- Implement secure OAuth integrations (e.g., Strava integrations)
- Develop webhook receivers and event-processing systems
- Apply Clean Architecture principles to backend projects
- Optimize SQL queries and stored procedures for performance
- Integrate ERP systems with authentication providers
- Build automation workflows that reduce manual operations
- GraphQL with .NET
- Advanced system design patterns
- Scalable and cloud-ready backend architectures
- Performance tuning and database efficiency
- C# / .NET / ASP.NET Core
- Entity Framework Core
- SQL Server
- PostgreSQL
- REST APIs
- Background Services
- GraphQL (actively building with it)
- Angular
- React
- React Native
- TypeScript / JavaScript
- HTML / CSS
- Docker
- Git & GitHub
- Supabase
- Power BI (DAX)
- Postman / Swagger
- Redis
I care about:
- Maintainable codebases
- Clear separation of concerns
- Secure authentication flows
- Performance-aware database design
- Production-ready systems — not just demos
- 📧 Email: smkupa@gmail.com
