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Interface Development & Architecture

Systems that talk to each other.

We connect existing applications and create a reliable flow of data – without duplicate data entry, unnecessary exports or error-prone manual handovers.

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Demo · Data flow between systems
Diagram: job and inspection data flow through an interface to an engineering firm and to billing; responses flow back. Job systemDrain cleaning InspectionImages · findings Interfaceready EngineeringFirm · assessment BillingERP · accounting XML
  1. XML creation Job and inspection data are combined into a structured file.
  2. Validation Format, required fields and plausibility are checked before sending.
  3. Transfer The validated file is sent to the engineering firm.
  4. Response Receipt and assessment status are returned automatically.
  5. Synchronization Status and billing data are up to date in every system.
Simplified example of industry-specific system integration between a drain cleaning company, an engineering firm and billing.

What it’s about

Systems that talk to each other.

In many companies, job management, accounting, CRM and specialist applications run side by side. Data is exported, sent by email and entered again elsewhere. That costs time and causes errors.

An interface ensures that information flows between systems automatically, validated and traceable. We design and build these connections – from simple file transfers to two-way synchronization.

Data validation is particularly important to us: faulty or incomplete records are detected before they cause problems in the target system.

Industry example: data exchange in sewer services

A drain cleaning company records job and inspection data, an engineering firm assesses it, and the client needs documentation that can be verified. An interface turns this into structured XML files in the format specified by the client, checks them for completeness and schema before sending, transfers them to all parties and processes their responses – without anyone retyping data.

Typical starting points

  • The same data is maintained in several programs.
  • Partners, clients or authorities require data in a fixed format.
  • Exports and imports are done manually and are error-prone.
  • A new system needs to be connected to the existing system landscape.

Scope of services

What this service area includes – explained in detail.

  • XML interfaces

    Creating, validating and processing XML files according to defined schemas.

  • REST APIs

    Developing and connecting programming interfaces based on HTTP and JSON.

  • GraphQL

    Flexible queries when applications should request exactly the data they need.

  • Data imports

    Importing data from files or third-party systems – with validation and logging.

  • Data exports

    Providing data in the formats partners or clients expect.

  • ERP integration

    Exchanging master data, orders and documents with the ERP system.

  • CRM integration

    Making customer data and contact history available where it is needed.

  • Accounting systems

    Handing over billing-relevant data without re-entering it.

  • Synchronization

    Keeping data sets in sync in one or both directions, including conflict rules.

  • Data validation

    Required fields, formats and plausibility are checked before handover.

  • Technical documentation

    Describing data fields, processes and error cases for operations and partners.

  • Automated handovers

    Scheduled or event-based transfers with notifications when errors occur.

Example situations

What this looks like in practice.

Typical situations from practice – described freely, without reference to specific clients.

  • Example

    Inspection data to the engineering firm

    Sections, findings and images from a sewer inspection are handed over as a validated XML file. The engineering firm’s assessment flows back into job management as a response.

  • Example

    Orders from the portal into the ERP

    New orders from a customer portal are validated and created automatically in the ERP. Status changes appear back in the portal.

  • Example

    Billing without retyping

    Completed jobs are handed over to accounting with services and materials – complete and traceable.

How we work

In four clear steps.

  1. 01

    Map systems and data flows

    Which data is created where, who needs it and in which format?

  2. 02

    Specify the interface

    Fields, mappings, validation rules, error cases and timing are defined.

  3. 03

    Build and test

    With realistic test data – explicitly including faulty records.

  4. 04

    Monitor and maintain

    Logs and notifications keep operations transparent.

FAQ

Frequently asked questions

What if a system has no official interface?

There are often still options, such as file exports, existing import functions or controlled database access. We check the possibilities and their limits before development starts.

How is faulty data handled?

Faulty records are detected, logged and never passed on unchecked. Depending on your needs, a notification is sent or the record is corrected via a review list.

Which formats are supported?

Common formats are XML, JSON and CSV as well as industry-specific exchange formats. What matters is what the systems and partners involved require.

Can interfaces be adapted later?

Yes. A documented interface can be extended when formats or requirements change.

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