Extensions
New functions fit cleanly into Shopify, Shopware, content systems and existing applications.
Custom Development
Plugins, integrations and tools.
We extend Shopify, Shopware, websites and internal systems with the functions, data flows and tools that move your team forward.
Some of our clients:
Business value
Custom development connects existing systems with your processes and creates functions that deliver concrete value every day.
Integrations
ERP, CRM, PIM, payment, shipping and marketing exchange data reliably.
Internal tools
Dashboards, imports and focused applications simplify concrete workflows for your team.
Ongoing development
Clean architecture and documentation create a stable foundation for the next steps.
What custom development improves in daily operations.
Purpose-built
Functions follow the real process and the people who work with it.
Connected
Systems, data and responsibilities work together reliably.
Extensible
Clear interfaces and clean code provide a foundation for future requirements.
We build.
Shopify and Shopware extensions.
Functions for products, checkout, customer accounts, promotions and internal workflows.
Plugins and apps.
Independent modules that can be installed, operated and developed in a controlled way.
APIs and integrations.
Stable data flows between shop, ERP, CRM, PIM, payment and marketing.
Internal tools and dashboards.
Clear tools for data management, approvals, reporting and daily workflows.
Data imports and migrations.
Structured transfer of product, customer and content data with traceable validation.
Technical development.
Assess, stabilize and extend existing systems with new functions step by step.
Frequently asked questions
Which custom solutions does SCHMUT/WEISS develop?
We build plugins, Shopify and Shopware extensions, interfaces, data imports, dashboards, customer areas and internal tools. Every project starts with a concrete process or clearly described function.
When does custom development create value?
Custom development creates value when a standard solution makes a central process cumbersome, several systems need a reliable connection or a dedicated function offers a clear operational advantage. Before proposing the work, we assess value, complexity and long-term operation.
How do you connect existing systems?
We analyze data sources, interfaces, responsibilities and failure cases. We then plan the data flow, authentication, logging and suitable control points for reliable operation.
How do you take over an existing codebase?
We begin with a technical assessment of architecture, dependencies, hosting, tests and documentation. The result is a concrete plan for stabilization, extension or staged modernization.
How do you ensure quality and reliability?
Clear requirements, TypeScript, code reviews, automated tests, controlled deployments and traceable monitoring form the technical baseline. The exact level of validation and operational support follows the risk and importance of the function.
How is custom development estimated?
The effort depends on the functional scope, existing systems, interfaces, data quality, failure cases and operating requirements. After technical clarification, you receive a transparent proposal for the agreed scope.
How do you support the solution after launch?
We can provide maintenance, monitoring, troubleshooting and ongoing development. Priorities, response times and available capacity are agreed to fit the system and your team.