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Engineering approach
Our architecture work centers on authority, data integrity, recoverability, offline behavior, and the operational consequences of partial failure.
The frontend can request a change. It should not decide that the change is valid, authorized, unique, or safe.
Command arrives
Identity, tenant context, schema and idempotency are established.
Authority is evaluated
Role, department, credential and domain rules decide whether the command may proceed.
Invariant is checked
The server verifies the business state still permits the requested transition.
Event is committed
The accepted fact is recorded with attribution and stable identifiers.
Read models react
Operational views, integrations and downstream workflows derive from committed facts.
Failure is recoverable
Retries, replay and reconciliation work from durable state rather than browser assumptions.
Principle 01
How we apply it
We use business events to preserve meaningful state transitions and decouple downstream consequences from the command that caused them.
Why it matters operationally
ERP and healthcare workflows often need to explain not only the current state, but how the system arrived there. Events provide a durable boundary for projections, integrations, replay, and audit.
Principle 02
How we apply it
Workflows that must continue without reliable connectivity are designed around local durability, explicit synchronization, retries, and reconciliation.
Why it matters operationally
Offline support is not a service worker checkbox. It changes command identity, conflict handling, device trust, retry semantics, and the user experience around pending work.
Principle 03
How we apply it
Critical changes are validated, attributable, and designed so historical evidence is not silently overwritten.
Why it matters operationally
Operational systems become dangerous when a convenient update destroys provenance. Auditability improves recovery, reconciliation, accountability, and the ability to explain system behavior.
Principle 04
How we apply it
Tenant, site, department, and role context are enforced as part of authorization and data access rather than inferred from the visible screen.
Why it matters operationally
A multi-tenant system must assume a hostile or misconfigured client. The backend must independently prove which organization and authority context applies to each sensitive command.
Principle 05
How we apply it
Schemas, permissions, credentials, invariants, and idempotency are enforced before business state changes.
Why it matters operationally
Frontend validation improves usability but cannot establish authority. Server-side command handling is where security, integrity, duplicate prevention, and domain invariants must converge.
Retries, partial completion, duplicate submissions, offline queues, projection lag, integration outages, and reconciliation need explicit user and operator experiences.