ConstraintThe product problem
A classified advertising platform for pets, built as a production-oriented web and API monorepo. The engineering challenge is to turn that scope into a legible system with explicit inputs, dependable workflow boundaries, and an outcome that can be inspected and maintained.
SystemThe architecture decision
The reviewed implementation routes catalog / customer action through commerce & fulfillment workflow, crosses commerce, payment & messaging apis where required, and produces order / listing outcome.
OutcomeThe operating result
Petsfactory is included as documented engineering work. Its source structure, technology stack, and functional flow are presented here even though no verified public deployment is currently available.