Build a simulation harness that evaluates a non-deterministic researcher-writer multi-agent system under injected faults.
You cannot unit-test a stochastic two-agent pipeline with a golden output. You evaluate it the way you stress a distributed system: thousands of simulated runs, controlled fault injection, and a judge calibrated against humans.
Updated Aug 2026 · Grounded in real Forward Deployed Engineer interview loops and written to a senior-engineer editorial bar.
You cannot unit-test a stochastic two-agent pipeline with a golden output. You evaluate it the way you stress a distributed system: thousands of simulated runs, controlled fault injection, and a judge calibrated against humans.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
