Making large-scale automation safe.
Case studies, essays, and working systems from safety-critical platform work.
500,000 safety checks run in total · 3,000,000 monitors standardized at Amazon · 15+ years across Amazon & Prudential.
For the person behind the work, see ericcaskey.com.
Amazon
Concurrent pre-execution safety checks gate every automated operation across multiple global regions, so a change ships only after the platform proves it is safe.
Tens of thousands of workflow executions a year, each behind a wall of concurrent safety checks.
Read the case studyLab
Demonstrates a deterministic scoring engine that grades any stock across five weighted dimensions and defends the verdict in writing.
Try itMarkets
Nightly exporters, public data, and honest methodology: the market suite as one exhibit, built and operated end to end.
Explore the marketsWriting
For weeks, a sentiment collector on my fleet reported a clean exit on every scheduled run while the Python inside it failed every single time. The wrapper was the culprit: the task ran , and returns the exit code of the…
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