Custom Software Development for Germany

B.Wyz builds custom software for German companies — operational systems and integrations, with German hosting, GDPR by architecture and documentation buyers accept.
In short
B.Wyz builds custom software for companies in Germany: operational and internal systems, ERP-adjacent platforms, customer portals and integrations with existing software. Delivery runs from the Paris and Brussels teams in Central European hours, with German or EU data residency and GDPR treated as architecture decisions rather than a pre-launch compliance exercise.
What German Projects Require
Documentation as a deliverable
German procurement expects specification, architecture and security documentation. Produced during the project, it costs little; assembled afterwards, it costs a great deal.
GDPR in the architecture
Lawful basis, retention, deletion behaviour, access control and the subprocessor chain decided before build, not audited after it.
German or EU hosting
Hosting region agreed at the start, with subprocessors documented rather than assumed.
Integration with existing systems
Most Mittelstand projects are integration projects. The existing ERP and accounting systems are usually staying.
The Mittelstand Pattern
The most common brief we receive from established German companies is not a replacement system. It is a custom operational layer over software that is staying — connecting ERP, production, logistics and finance so people stop maintaining the spreadsheet that reconciles them.
That is usually a fraction of the cost of replacing anything, and it carries far less operational risk for a business that cannot pause.
How Delivery Runs
Process mapping
How the operation runs now, including the workarounds — which is where the real requirements are.
Architecture and data decisions
Hosting, data handling and integration boundaries agreed and documented before development begins.
Phased delivery
Usable releases in sequence, so the business gets value before the whole system is finished.
Documented handover
Code in your repositories with documentation your own team — or an auditor — can follow.
Custom Software Development in Other Markets
The Full Service
Everything custom software development covers, independent of market.
- Custom Software Development CompanyB.Wyz builds custom software around how your business actually works — internal systems, customer platforms and the integrations between them.
- ERP DevelopmentCustom ERP development built around your real operations — inventory, finance, production and reporting in one system. Discuss your requirements with B.Wyz.
- CRM DevelopmentCustom CRM development for teams whose sales process does not fit a standard platform. Pipelines, automation and integrations built your way, by B.Wyz.
- Web Application DevelopmentB.Wyz builds fast, secure web applications — customer portals, internal platforms and data-heavy tools that hold up in daily production use.
Germany
Questions

Yes. German or EU data residency is agreed at the architecture stage with the subprocessor chain documented, using German regions on the major cloud platforms.
Yes. Specification, architecture and security documentation is produced during the project rather than assembled afterwards, which is both cheaper and more accurate.
Yes, and for most established German companies that is the better approach. A custom operational layer integrated with an ERP that is staying in place carries far less risk and cost than replacing a working finance system.