Who this is for
For products that need a maintainable API, a reliable integration, or clearer data ownership. We design the contract around the caller and the business operation: required inputs, permission checks, error states, idempotency and transactional boundaries. External delivery failures should not silently undo a successful local write. The goal is a backend another engineer can inspect and safely extend.
What we build
A useful scope
- Typed REST contracts, input validation and permission guards
- Relational data models, migrations and transactional operations
- Idempotent submissions, durable delivery queues and audit records
The exact scope, acceptance criteria and delivery boundaries are agreed after reviewing your product. These capabilities describe the work we can discuss; they are not a promise of a fixed package.
How delivery works
From context to delivery
- Map business operations, data ownership and downstream dependencies.
- Implement and verify one operation across persistence and API boundaries.
- Document failure semantics, migrations and operational recovery.
Technical choices
Architecture and tradeoffs
NestJS with Fastify can provide a structured service boundary; PostgreSQL and Prisma provide relational persistence and migrations. We use transactions for operations that must succeed together and a persistent delivery queue for external notifications. Choices follow the workload and maintainability needs rather than a fixed stack checklist.