karentonoyan
Available for Consulting & Development

Enterprise .NET Solutions & Azure Cloud Optimization

I help companies modernize legacy monoliths, architect resilient Web APIs, and slash cloud infrastructure costs through expert Azure and Cosmos DB tuning. Backed by 10+ years of fintech engineering leadership.

Specialized Services

Tailored solutions built for scale, performance, and long-term maintainability.

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Full-Stack .NET & Modern Web Apps

Designing robust, cloud-native web apps and resilient RESTful microservices. Full-stack capability across modern ecosystems, ensuring clean API-to-frontend integration.

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Cosmos DB & Cloud Cost Reduction

Deep-dive container audits, Request Unit (RU) tuning, and structural refactoring to maximize database performance while aggressively removing cloud budget waste.

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ERP Customization & Legacy Modernization

Extending enterprise ERP frameworks (including Sage 500) with bespoke functional modules, custom screens, and migration paths to modern cross-platform .NET systems.

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Enterprise Reporting & Data Tuning

Architecting high-complexity business intelligence reports using Crystal Reports and SQL, while liquidating structural database bottlenecks to speed up generation time.

Proven Business Impact & Products

Real outcomes achieved for complex enterprise ecosystems and production-hardened proprietary software.

Proprietary Product Architecture

Enterprise Restaurant POS Ecosystem

Designed, built, and maintain a highly resilient Point of Sale platform supporting live restaurant operations. Features deep integration with Cash Register Systems and major local/international payment gateways to ensure seamless, compliant transaction processing.

40+ Clients
Millions of Orders Processed
Fintech Hardware Integration

Automated Currency Exchange Kiosk Software

Engineered the software foundation for self-service currency exchange kiosks. Solved complex hardware-to-software communication challenges, real-time rate updates, and strict security validation protocols required for fintech banking compliance.

Fintech
Hardware & Api Native
Cloud Efficiency

Azure Service Decommissioning & Container Refactoring

Audited underutilized corporate cloud environments and optimized Cosmos DB resource parameters to slash database overhead while maintaining strict system throughput requirements.

$15,000+
Saved Annually
Data Architecture

Monolith Migration & ETL Liquidation

Led the technical consolidation of an external core application into internal infrastructure, entirely wiping out resource-heavy overnight ETL processes and accelerating report generation.

Hours to < 15 Min
Processing Speedup

Technical Proficiencies

A rigorous look at the specific core technologies I leverage daily.

Core Backend

  • .NET / C#
  • ASP.NET Core / Web APIs
  • Microservices & REST
  • Windows Service Apps

Cloud & Data Systems

  • Azure Cosmos DB
  • MS SQL Server / PostgreSQL
  • Redis / Azure Cache
  • Azure Functions & Service Bus

Frontend Ecosystem

  • Angular (2+)
  • Vue.js
  • TypeScript / JavaScript
  • Tailwind CSS / HTML5

Enterprise & DevOps

  • Sage 500 ERP Customization
  • Crystal Reports Analytics
  • Azure DevOps CI/CD Pipelines
  • Checkmarx / DataDog / Insights

Let's Optimize Your Architecture

Have a legacy system that needs migrating or a ballooning Azure bill? Reach out and let's coordinate a strategy session.