Backend & Commerce API
The commerce back end is where correctness matters more than anything. Stock that is wrong by one unit becomes an oversell, a refund and a lost customer. We build commerce services that are correct under concurrency and fast under load.
Services we build
- Catalog and product data, including variants, bundles and configurable products
- Cart and checkout sessions with reservation and expiry semantics
- Order lifecycle: capture, fulfilment, partial shipment, returns and refunds
- Inventory across warehouses, stores and drop-ship suppliers
- Pricing and promotions, including B2B contract pricing and tiered rules
Built for peak, not for demo day
Every service is load-tested against three times your projected peak. Carts and sessions sit in Redis, order events go through Kafka, and checkout is protected by queueing and circuit breakers so a slow downstream system cannot take payments down.
API design
REST for system-to-system integration, GraphQL for channel front ends, OpenAPI documentation generated from the code, and contract tests so a breaking change fails CI instead of production.
Typical stack
Node.js and NestJS or PHP 8 and Laravel, PostgreSQL, Redis, Kafka, Kubernetes on AWS, Terraform for everything underneath.