Do more with the team you have – with custom software and AI
Quoting, calculation, inventory, accounting handovers, sales research – much of this eats time your core business needs. We build custom software that takes on this work: as a clear web app, as an AI agent with bounded tools, or as a deliberate combination of both – engineered, tested, deployed, and owned by you. So your team does more, without everything routing across your desk. We show you where that helps most in your business, through real projects. You work directly with the developer, not an account manager.
When custom software pays off for you
- Your workflow depends on spreadsheets, email and manual copying.
- ERP or standard SaaS fits 80 percent, but the missing 20 percent is business-critical.
- You need a portal, internal app, quotation logic, or an agent-assisted work step.
- You want to own the software and data instead of being locked into a black box.
How your custom software and agents are built
The shape follows the workflow. We use React and Next.js for durable app surfaces, TypeScript for maintainable logic, AI agents for delegated tasks, and integrations around the systems you already use. The goal is not a new platform. It is owned software that makes the work move.
Custom business apps
AI agents and tool workflows
Data and integrations
Dashboards and reporting
Portals and marketplaces
Integration with existing systemsWhere we take load off your business
ERP-adjacent process software and CPQ configurators
When standard processes and special logic need a clean boundary.
Inventory and project management
When stock, reservations, schedules and project status belong together.
Accounting and finance workflows
Around DATEV, validation, exports and recurring closing work.
B2B sales platforms and market intelligence
CRM data, market analysis and marketplaces for international sales teams.
Marketing and lead systems
Only where they are tightly connected to sales, CRM, data quality or product logic.
Functional areas covered
We focus on the repeated work that runs your business: sales, purchasing, inventory, warehousing, finance, production, projects, and market-facing portals.
Sales & MarketingProcurementManufacturingWarehousingProject & Service ManagementFinance & AccountingIndustries served
We work best where important work falls between standard tools – across a wide range of industries. That focus is where custom software creates the most value.
Manufacturing
Trade-Booth Construction
Medical & Life Sciences
E-Commerce
How we work
We start with one concrete workflow, not a feature list. That becomes a short prototype tested with real users. What works is hardened for production: permissions, data model, agent tools, tests, deployment, monitoring and documentation. Human review goes where mistakes get expensive – not evenly across everything.
Where standard is enough, we say so. Where it is not, we build narrowly and deliberately. The decision framework is in Custom Software vs. Off-the-Shelf.
If you want to review a workflow, let us discuss a concrete workflow.
Talk to us about your workflow
We like starting with what slows your business down, whether that needs an app, an agent, or both, and where custom software would create real value.
Give us a call:
+49 441 3091 9602Or write to us:
hello@certaince.comChat with us on WhatsApp:
https://wa.me/493035056713