Frontend Engineer signal: bitmask DP + state compression in a in-app notification tray context. This is a ProdMatch-owned frontend engineer drill, framed as a March 2026 Stripe Engagement UX simulation, not a copied platform question.
Company context
Stripe · Engagement UX
Freshness
March 2026
Product surface
in-app notification tray
ProdMatch interview simulation based on product-team patterns; not a claim of a real company question.
For in-app notification tray, each notifications requires a subset of capabilities. Choose the smallest team of services covering all required capabilities; tie-break by lowest total risk.
Input
Output
Constraints
Concepts
required={A,B,C}, services=[AB risk 4, C risk 1] -> count=2, risk=5
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