Your system works, but every change takes months, licence costs keep rising, and your supplier dictates the terms? We transform legacy systems using open, flexible architectures, giving you full control over your code, data and documentation — even when the original source code is unavailable.
Keeping an old system running makes sense – until it starts holding the business back. If three or more of the situations below sound familiar, it’s time to plan a rewrite.
Every change takes months and costs a fortune, because only one supplier understands the system.
The fees go up every year, and you have nowhere else to turn.
It’s slow and doesn’t scale, so your team falls back on Excel and workarounds.
The supplier has gone, and Delphi or VB6 specialists are all but impossible to hire.
You can’t connect it to e‑commerce, CRM, BI or AI.
Your IT team is afraid to touch anything, because nobody knows what might break.
Not sure whether to rewrite or maintain?
Start with a system takeover and stabilisation – then we’ll help you choose the right path.
Your vendor won’t hand over the code? The company that wrote it no longer exists? That’s not the end of the road. We reconstruct the business logic from what the system actually does.
No source code required
We analyse screens, data, reports and integrations. AI speeds up the work, and we confirm every rule in at least two sources.
The result is a complete functional and technical description of the system. Often the first in its history.
The same input data must give the same result in the old and new systems. Your users have the final say.
This approach is known as black-box reverse engineering. We recreate how the system behaves, rather than decompiling someone else’s software.
A new system puts you back in control of your costs, your data and the pace at which your business grows.
The code, data and documentation are yours. Switch partners whenever you like – including to your own in-house team.
Open technologies instead of paid, closed platforms. You pay for development, not for the right to use the software.
The new architecture runs faster and scales to handle traffic peaks, instead of falling over at the worst possible moment.
Less of your budget spent keeping an old system on life support, and more invested in moving forward.
Supported technologies, regular patching and SSO/MFA sign-in. Companies covered by Poland’s amended National Cybersecurity System Act have until 3 April 2027 to bring their systems into line, and financial firms must also meet DORA.
No more single point of failure, whether that’s one person or one supplier. A mainstream technology makes hiring easy.
APIs and well-structured data connect the system to ERP, CRM, e-commerce, BI and AI Hub.
New features in weeks, not quarters.
Not every system needs a full rewrite. Our assessment will show you what to rebuild and what can safely keep running as it is.
Your business can’t stand still, so for us a system rewrite is a carefully planned operation, not a leap into the unknown.
We get to know the system, its users, data, licences and risks.
Outcome: a “rewrite or maintain” recommendation and an initial plan.
We build the specification from the code or – if there isn’t any – from the interface, the data and conversations with your team. AI speeds up the analysis.
We choose the approach: a gradual, module-by-module rewrite with the old and new systems running in parallel, or a complete rewrite.
We check every module against the same data in both the old and new systems. The results must match.
We move the data and switch users over with no downtime, with a rollback plan ready to go.
We take responsibility for the new system’s stability under an SLA.
The biggest risk in any migration is cut-over day. That’s why we do everything we can to make it just another day.
The old system keeps running until the new one has proved itself in production.
Every stage comes with a ready-made plan for rolling back to the old system.
You see working modules regularly, not just at the end of the project.
Fixed Price when the scope is clear, or Agile Cap – a flexible scope with a capped budget.
We use AI to analyse the old system, reconstruct its business rules and speed up the rewrite. Every output is then reviewed by our engineers – they’re the ones accountable for quality and security. Your code stays with you, and your data never goes into public AI models.
Read our AI security policyOld technology doesn’t scare us. We most often migrate systems from:
We choose the target technology to suit your needs and the skills of the team that will take the system over.
