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Case study, SMB operations

Kampfer Cadence: a live agency, off WhatsApp chaos and onto a platform.

A four-surface operations platform that replaced manual coordination for a real service business.

The problem

A home-service agency ran roughly 100 clients and 8 to 11 trainers over manual WhatsApp threads and spreadsheets. Messages were lost, billing was manual, and there was no reliable record.

The architecture

  • ›Four surfaces: admin console, two role-specific apps that work on a phone, and a WhatsApp bot.
  • ›Two auditable state machines: a 6-state client lifecycle and a 7-state session lifecycle.
  • ›Row-level-locked transactional billing.
  • ›WhatsApp Business Cloud API with HMAC-verified webhooks; PhonePe UPI; DPDPA-aware data handling.
  • ›A trainer-client PII isolation rule enforced by contract tests that fail the build on a leak.

What shipped

A full v1 running live operations, delivered March to June 2026, on free-tier-first infrastructure with a documented scale path to 1,000 clients without a rewrite.

Clean handoff

Documented state machines, budgets, and decision records, owned by the business.

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