REST APIs and interfaces
Design and implementation of REST interfaces, integration of existing systems (ERP, CRM, inventory management), standalone API services in C# on ASP.NET Core. Documented with OpenAPI, versioned, secured.
Service · Software Development
Software development from the database to the application – without manual handoffs
Custom software pays off where standard software would bend your process. We develop high-performance database solutions, REST APIs and service interfaces, backend systems in C# and Python, and desktop, mobile and business applications – and hand over systems your team can continue to develop.
From requirements to introduction and handover, with acceptance in short steps.
Request an initial assessmentAll services
01
What we build
Backend systems
Business logic in C# and Python, cleanly separated from database and user interface – so either can be exchanged without touching the core.
Business applications
Desktop, web and mobile applications for business units: data entry, reporting, field service with offline capability.
ETL and data pipelines
Bring data together from source systems, check, transform and deliver it where analysis and reports are created.
Data migration
Transfer legacy data into new structures – with reconciliation, logging and a way back. Also between database systems, for example from SQL Anywhere to SQL Server.
02
Technologies
C# / .NET and ASP.NET Core, Python, Microsoft SQL Server, REST and OpenAPI, Blazor and modern web frontends, Windows desktop, cloud integration (Azure, SaaS interfaces). The choice follows what you already have and the team that will operate the solution – not fashion.
03
How we work
Clarify requirements
Goal, users, interfaces, data model – in writing, in your language.
Settle the architecture
Before code is written; test critical assumptions early with a vertical slice.
Implement in iterations
Two to three weeks per step, with acceptance.
Handover
Documentation, tests and knowledge transfer; further development by separate agreement.
FAQ
Frequently asked questions
Fixed price or time and materials?
Both are possible. With a clearly defined scope we quote a fixed price; with open requirements we work in accepted iterations on a time-and-materials basis – transparently, with a budget cap.
How long does a REST interface take?
An interface to an existing system with a clear data model is typically in production within two to four weeks; complex integrations with several systems can take two to three months. After the initial assessment we can be more precise.
What happens after go-live?
We hand over the solution to your team with documentation. For infrastructure and ongoing server operation, we work with your internal IT or systems provider where needed; further development can be agreed separately.
Contact
Describe your requirement
Two paragraphs are enough: what should the software do, which systems are involved? We'll get back to you with questions and a first assessment.
Request an initial assessment