Greenfield API design
You are exposing a new service to mobile apps or retailers and need a resource layout that will not embarrass you in twelve months.
Johannesburg · Remote across ZA
REST APIs your integrators can implement without a week of Slack threads
API North is a programming consultancy focused on REST API design and the integration work that follows: resource models, OpenAPI specifications, auth boundaries, and the handoff between your backend squad and external partners.
Where teams usually call us in
Partner integration mapping
Two systems already exist; you need a field-level map, retry rules, and a realistic cutover plan between ERP and fulfilment.
Pre-launch API review
Your endpoints are coded; you want an independent pass on naming, error shapes, and versioning before partners receive credentials.
They redrew our shipment status model in one afternoon and gave our warehouse vendor a PDF they could actually build against. We still disagree on whether cancelled should be past tense, but the contract is clear.
From the field notes
Choosing HTTP status codes clients will not misread
When a mobile app treats every 4xx as “log the user out,” your status choices matter more than the JSON body.
OpenAPI review checklist before you share with a partner
Eight sections we walk through when a client hands us a draft spec the day before a retailer kickoff.