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The most satisfying demonstration of KC Star V8 is an UPDATE that does no work. Change PaymentMethod, a dimension nothing depends on, and the selective trigger recalculates zero measures. Here is the trigger that pulls it off - and a tautological bug sitting right beside it.
KC Star V1 has no ETL job and no application code. Two PostgreSQL triggers explode sales into dimension rows and version them on change - and the gaps between what they do and what I claimed they do are the most instructive part of V1.
Pick the one closest to the role. Each is two pages and carries the same facts.
Applied AI
Agentic AI & Cloud Engineer · multi-agent systems, RAG and MCP on AWS
Cloud & .NET
C#, .NET 10 and ASP.NET Core microservices on AWS and Azure · Terraform & AWS CDK
Data Engineering
AWS lakehouse · Kinesis, Glue (PySpark), Apache Iceberg, Lake Formation
Everything
All three domains, with the standout project from each