Joel Birlingmair

Engineered Azure-native backend services using C# / .NET 6–7 and ASP.NET Core to support demand forecasting, inventory optimization, and fulfillment workflows, processing millions of supply-chain events per day with sub-second API latency. Designed AI-powered enterprise services leveraging Azure OpenAI (GPT-4), Azure AI Search, and Cognitive Services to augment supply-chain planning and demand forecasting workflows, supporting 50K+ daily transactions and reducing manual planning effort by 30%. Architected RAG pipelines combining Azure AI Search and Azure OpenAI to power contextual decision support across inventory and fulfillment workflows, improving planner response time by 35% and supporting 500+ daily enterprise users. Programmed high-throughput REST APIs integrated with Dynamics 365 Supply Chain Management, enabling enterprise customers to reduce stockouts and excess inventory by 20%. Created React + TypeScript (Fluent UI) web experiences for planning and monitoring, delivering r

Implemented cloud-native, headless e-commerce micro-services using C# (.NET Core 3.1 → .NET 5/6) on Azure Kubernetes Service (AKS), delivering product catalog, checkout, inventory, and order management APIs that powered omnichannel retail (web, mobile, in-store) and increased checkout conversion by 25%. Orchestrated event-driven data pipelines using Kafka, Apache Airflow, Python, and Go to process clickstream and transaction data into BigQuery, powering personalized recommendations and BI dashboards, driving a 20% uplift in customer engagement and sales. Programmed high-performance data access layers using Entity Framework Core, Azure SQL, PostgreSQL, and Redis caching, optimizing flash-sale traffic and reducing inventory and stock-sync errors by 20%. Led the hands-on design and development of a cloud-native HRMS platform using C# (ASP.NET Core 2.2 → 3.0), delivering core modules for employee records, payroll, leave management, performance reviews, and onboarding. Implemented RESTf

Developed enterprise-grade .NET Framework applications leveraging ASP.NET MVC/Web Forms, supporting shipment lifecycle processing, billing, and internal logistics workflows handling millions of transactions per day. Programmed service-oriented back-end components using WCF (SOAP/XML) and layered architectures, enabling secure, reliable integration across pricing, routing, and operating systems. Implemented SQL Server-backed data access layers (ADO.NET, stored procedures, indexing strategies), improving query performance by 15% - 20% on high-volume transaction tables. Optimized application performance by refactoring legacy .NET code, reducing synchronous blocking calls, and minimizing database round-trips, resulting in a 10%+ reduction in average response times for critical internal applications. Created IIS-hosted APIs and web applications, applying authentication, authorization, and RBAC for internal operations and customer service users. Wrote unit and integration tests for core busi