Contract-first APIs
The interface is specified and documented before implementation, so front end and back end can proceed in parallel and honestly.
Software development
Product engineering
Web applications, internal tools and APIs, built on the assumption that somebody else will maintain them one day, which changes how they are structured, tested and documented.
The situation
Software that outlives the team that wrote it
A prototype that succeeds becomes a production system whether or not it was built for the job. That is when the bill arrives: no tests around the money, authentication bolted on afterwards, and a setup process only the original author can complete.
We build for the handover from the first commit. Recently that has meant an Angular front end against a Django REST API with token authentication and an interceptor, filtered catalogues and role-aware views, with the API contract written down before the screens were built against it.
Scope
What the work includes
Authentication and roles
Real token-based auth, session handling and permission checks on the server: never only in the interface.
Interface engineering
Accessible, responsive front ends with sensible loading and error states, in Angular or React.
Tests where they pay
Around money, permissions and data integrity. We are not chasing a coverage number for a slide.
Deployment pipeline
Environments from code, preview builds on pull requests, and a rollback that has been tried at least once.
Handover package
Architecture notes, a working local setup, and a walkthrough recorded with whoever takes over.
1
Documented API contract before the first screen
2wks
Typical time to a demonstrable prototype
100%
Projects delivered with a working local setup guide
Deliverables
What you are left holding
Every engagement ends with artefacts you own outright, whether we continue together or not.
- Application source with CI/CD
- Documented API specification
- Test suite covering critical paths
- Local setup guide and handover session
Typical stack
What we build it with
Chosen for support horizon and hiring pool, not novelty. If your team already runs something equivalent, we will use yours.
AngularReactTypeScriptDjango RESTFastAPI.NETPostgreSQL
Questions
What clients ask first
Can you take over an existing codebase?
Often, yes. We start with a short assessment: what the risks are, what we would stabilise first, and whether continuing is genuinely cheaper than replacing. Sometimes the honest answer is that it is not.
Do you design as well as build?
We do interface and interaction design to a professional standard, and we are candid that a dedicated brand or product designer will beat us on visual craft. For a marketing site or a brand system, hire one. We will build it faithfully.
What happens when the project ends?
You get the repository, the pipeline, the documentation and a walkthrough. If you would rather we stayed for support, that is a separate, explicit arrangement.
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Is this the problem you have?
Describe it in three sentences and we will tell you what the first two weeks would look like.