System Modernization

A system that makes daily work harder? We modernize it without stopping the business

Slow, expensive to maintain, everyone is afraid to touch it, and it talks to no other tool. We modernize systems like that step by step — the company keeps working the whole time.

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15+
Years of experience
EU & US
Markets served
Senior only
No juniors on projects
AI+
Accelerated delivery
The problem

How to tell it’s time

An old system rarely fails loudly. It fails slowly, making everyday work a little harder every year.

Everything takes longer than it should

The system crawls through routine operations and people wait for screens instead of working. Workarounds have become standard procedure.

Everyone is afraid to touch it

No documentation, no tests, and the authors left years ago. Every change is a risk, so changes don’t happen — while the needs keep growing.

Maintenance costs more every year

Every fix needs a specialist in a technology nobody teaches anymore. Small changes cost like big projects.

It connects to nothing

New tools have no way to plug in, so data moves by hand. The system became an island the rest of the company flows around.
What we do

Modernization, as a set of options

Every engagement starts with an audit. Then we pick the path that fits your system, your risk tolerance and your budget — not a one-size-fits-all playbook.

Audit and modernization roadmap

We map the system, its dependencies, data flows and risk areas. You get a concrete, prioritized plan — what to modernize, in what order, at what cost — before you commit to anything.

Technology migrations

AngularJS → Angular, PHP 5 → PHP 8, .NET Framework → modern .NET, legacy Java → Spring Boot, Vue 2 → Vue 3. We migrate incrementally — old and new code run side by side until the switch is safe.

E-commerce frontend replacement

For commerce sites running on legacy frontends — aging themes, jQuery-era storefronts, monolithic platform templates — we build a modern, fast frontend on top of your existing platform. New storefront, same backend: products, orders and payments keep flowing throughout the transition.

Strangler-pattern rebuilds

We wrap the legacy system and replace it piece by piece behind a stable interface. Each release shrinks the old system — and you have a working product at every step, not a promise of one.

Safety nets before surgery

Before we change anything, we add characterization tests, monitoring and rollback paths. Modernization is only safe when mistakes are cheap and reversible.

Documentation and handover

Every engagement ends with documented architecture, running CI/CD and a team that knows how to keep evolving the system — yours or ours, your choice.
Technologies we take off life support
AngularJS → AngularjQueryPHP 5 → PHP 8.NET Framework → .NETLegacy Java → SpringVue 2 → Vue 3Ext JSLegacy e-commerce frontendsSOAP APIs
Case study
0
downtime during the entire frontend modernization

Fleet platform, frontend replacement

A German automotive company worked daily on a fleet platform with a frontend from years ago: every release was risky and the interface put users off. We replaced the frontend module by module — old and new ran side by side, and users saw improvements, not a migration. Releases stopped being events, and the cooperation continues today.

Module by moduleNo downtimeLong-term cooperation
How it works

From audit to handover

A proven sequence that keeps risk low and progress visible from week one.

01

System audit

1–2 weeks inside your code, data and processes. Output: a risk map and a modernization roadmap with real estimates.
02

Fixed-scope phases

We split the roadmap into fixed-scope, fixed-price phases. You approve each phase before it starts — no open-ended engagements.
03

Incremental delivery

Old and new run side by side. Weekly demos, production releases from the first weeks — no 18-month black box.
04

Clean handover

Documented, tested, deployed. Your team takes over — or we stay for further development. No lock-in either way.
Outcomes

What you get

  • Changes ship in days, not weeks
  • Maintenance costs go down
  • Zero downtime through the entire migration
  • The system keeps up with the business again, not the other way around
“They modernized our order system module by module. Operations didn't lose a single day in eight months.”
Klaus Weber CIO, wholesale distribution
FAQ

Common questions

Will the system be down during migration?

No. Old and new run in parallel, and we switch pieces only when they're proven. Zero-downtime is a design constraint, not a stretch goal.

Our system has no documentation. Is that a problem?

It's the normal case. We start by writing characterization tests that pin down how the system behaves today, and that becomes the safety net for every change.

Rewrite or modernize?

The audit decides, with numbers. A full rewrite is the right call far less often than vendors claim, because it trades a working system for a promise.

How long does it take?

Phases are weeks, not quarters, and the first production change usually lands within a month. The full journey depends on the system, and the roadmap gives you the honest estimate up front.

Have a system that slows the company down?

Send us a message. Within a few days you'll get an honest assessment of what modernization would take — and whether it's worth it.

Get an assessment
or write to us directly: hello@udb.pl