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Engineering case studies

Show the reasoning, not just the claim.

These representative scenarios demonstrate how GNU Group approaches architecture, performance, security, diagnostics and production-readiness problems across connected engineering systems.

Evidence before assumptions Diagnose before tuning No invented success metrics
Representative engineering scenario. It illustrates the type of problem-solving approach GNU Group can provide; it is not presented as a named-client testimonial or a claim of specific measured results.
01Data Engineering & Big Data

Recovering a slow Spark data pipeline

A representative performance-engineering scenario for a Spark/PySpark workload that becomes slower and less predictable as data volume and transformation complexity grow.

Apache SparkPySparkSpark SQLKafkaLakehouseObservability
02DevOps & Platform Engineering

Assessing Kubernetes production readiness

A representative architecture-review scenario for a Kubernetes platform that works functionally but needs stronger production resilience, security and operability.

KubernetesContainersNetworkingSecurityPrometheusGrafana
03AI Engineering

Taking a RAG system from demo to production

A representative AI-engineering scenario for a RAG prototype that produces promising demos but lacks measurable retrieval quality, evaluation and production controls.

LLMsRAGEmbeddingsVector SearchEvaluationAI Security
04Automotive & AAOS

Diagnosing an AAOS / VHAL integration boundary

A representative automotive-platform scenario where application, Car Service, VHAL and vehicle integration boundaries need to be understood systematically.

AAOSCar ServiceVHALAIDLEmbedded LinuxDiagnostics
05Security Engineering

Hardening a Linux production baseline

A representative security-review scenario for a Linux estate that needs a consistent, explainable hardening baseline without breaking operational requirements.

LinuxSSHSELinuxnftables / firewalldAudit / loggingSecurity Engineering
06DevOps & Security

Strengthening security inside a CI/CD pipeline

A representative DevSecOps scenario for a delivery pipeline that needs security controls without turning every build into an unmanageable collection of scanners.

CI/CDDevSecOpsContainersSecretsSAST / dependency checksArtifact security