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Architecture Blueprints

How I design secure, scalable fintech mobile systems: offline-first, observability-driven, and performance-budgeted.

Click a node to see my preferred approach, trade-offs, failure modes, and testing strategy.

Principles

  • Define and measure SLOs (cold start, ANR, crash-free) and enforce them in CI or release gates where possible.
  • Use baseline profiles and equivalent optimizations to lock in critical-path performance; regenerate on meaningful code changes.
  • Prefer lazy init and on-demand loading for non-critical path; keep Application and first screen minimal.
  • Instrument startup and key flows with traces; set performance budgets and fail builds or flag when regressed.
  • Cache aggressively with clear invalidation and staleness rules; use appropriate cache layers and measure hit rates.
  • Treat security non-negotiables (pinning, keystore, screen protection, logging hygiene) as part of the definition of done.