Alexander Kastil

Early work included data pipeline projects with SQL Server integration tooling, delivering to client specification before cloud infrastructure existed. The move into full web development followed with ASP.NET and SharePoint. Both were server-rendered, both grounded in the same platform, and both increasingly driven by JavaScript on the client. That overlap pushed me toward client-side specialization: progressively enhanced interfaces, touch-optimized HTML for iPhone 4’s WebKit browser, and production use of touch events before mobile frameworks existed.

The postback model was not a constraint to work around. It was the ceiling. Building touch-optimized interfaces for iPhone 4’s WebKit before iOS SDK access existed confirmed what server-rendered architecture could not account for: the browser was already the application runtime for anyone willing to treat it as one. That shift framed the work that followed.

SharePoint exploration started before 2003, running alongside the infrastructure phase. I wrote the first SharePoint development classes before 2007, covering web parts, event receivers, and content types. The real differentiator was solution packaging: WSP Builder made complex, repeatable deployments tractable before proper tooling existed, and that focus separated the work from ordinary intranet delivery.

The platform’s ASP.NET postback model became the forcing function for change. Round-tripping to the server for every interaction worked until it did not. As Office 365 took hold, sandboxed solutions removed the server-side option anyway. Client-side was the only viable direction. AngularJS arrived at the right moment: two-way binding replaced manual DOM manipulation in SharePoint project UIs, and the pattern held well enough to become the default approach before Microsoft’s ecosystem had converged on one. That commitment to client-side JavaScript inside an enterprise collaboration platform built the foundation for what came next.

The transition started with AngularJS inside SharePoint. When Angular 2 arrived in early beta, I moved to it alongside early .NET Core beta — both unstable, both simultaneously. That forced a real reckoning with object-oriented JavaScript and then TypeScript, which mapped closely enough to C# that it became the turning point. It created a deep specialization in Angular that combined naturally with existing Microsoft 365 and Azure skills, producing edge-case solutions at the intersection of frontend architecture and enterprise platform work. Ionic and hybrid mobile ran as a committed side track: early adoption through pre-stable tooling, Cordova pipelines, and platform-specific quirks before the ecosystem settled. The SharePoint Framework’s Node.js toolchain completed a broader shift: Visual Studio Professional gave way to VS Code and Windows Subsystem for Linux as the daily development environment.

The toolchain change was not cosmetic. It removed the platform dependency that had quietly shaped every prior decision. From that point, the work was portable, composable, and aligned with the Unix-based infrastructure that cloud-native development required. The frontend specialization and the cloud track converged because the environment finally matched both.

That terminal-based environment made the move into Azure development a natural next step. When the COVID-19 pandemic hit, I was among the few certified Azure Developers and Azure DevOps Engineers operating across distributed environments spanning Europe and the Middle East. I designed distributed systems on Azure Container Apps, with Dapr handling service-to-service communication, state management, and distributed application patterns. .NET Aspire provided orchestration and observability across microservices. CI/CD automation and infrastructure-as-code became standard practice across all projects.

The pandemic removed the optionality. Organizations that had treated cloud-native infrastructure as an architectural preference discovered it had become an operational requirement in weeks. Distributed systems built for technical rigor were suddenly in demand for business continuity. Being positioned in that stack at that moment was not a coincidence. It was the direct result of a six-year infrastructure build.

Early work with Azure Cognitive Services opened the AI track. Two threads developed from that point. Semantic Kernel, Copilot Studio, and Microsoft Foundry built the agentic AI side. GitHub Copilot, adopted from its first public release, built the agentic software engineering side.

Those threads converge in the work today. Microsoft Agent Framework is where they meet: multi-step autonomous workflows built with the architectural discipline that thirty years on the Microsoft platform makes possible. Claude is part of the stack where it fits the task.

That cross-stack fluency is something I have been building for thirty years, and the name integrations.at reflects exactly that.