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NewAI development and expert advisory

The engineering partner for every step from idea to production

Thirty years of building software that has to work — now including the AI systems your business is being asked about. We define, build, modernise and staff. You keep the result.

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Budapest-based · Working across CET, UK and US time zones

pannonrex / delivery-agent

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We run a 15-year-old Java banking core. We cannot take it offline. Where do we start?

Start where a mistake is cheap. Here is the sequence we would run:

  • Mapped 1,240 stored procedures and 38 external integrations
  • Identified 4 bounded contexts safe to extract first
  • Estimated migration: 3 slices, no downtime, 9 months
  • Drafting the characterisation test harness

Slice 01

Reporting

Read-only. Lowest risk, proves the pattern.

Slice 02

Payments

Shadow traffic first, then cut over by tenant.

Slice 03

Core ledger

Last. Only once the harness is trusted.

Ask about modernising a system you cannot switch off

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Some of our partners

  • MOLOil and gas
  • HMCSCourts service
  • MSCIFinancial indices
  • DAFCommercial vehicles
  • NASASpace agency
  • DIFCFinancial centre
  • ButlerMetal buildings

Services

Everything from the first whiteboard to running live in production

Eight practices, one delivery team. Most clients start with one and expand once they have seen how we work.

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The team

A full delivery team, assembled around your problem

Project managers, business analysts, senior developers, UX designers, manual testers, test automation engineers and DevOps — all in house. You get the roles the work actually needs, not whoever happens to be free.

  • Project managers
  • Business analysts
  • Senior developers
  • UX designers
  • Manual testers
  • Test automation engineers
  • DevOps engineers
How we build the team

Selected work

Systems people depend on

Banking cores, judicial case management, vehicle configuration, industrial visualisation. Long-lived software with real consequences when it is wrong.

  • Financial services

    Core banking solution

    A transaction platform rebuilt for a bank that had outgrown its original system, migrated without a service interruption.

    Zero-downtime migration

    • Java
    • Postgres
    • Re-engineering

  • Financial services

    Financial analysis and risk assessment

    Modelling and reporting tooling that turns raw exposure data into decisions analysts can defend to a regulator.

    Reporting cycle cut from days to hours

    • Python
    • Data pipelines
    • Analytics

  • Automotive

    Automotive vehicle configuration

    A configuration engine handling tens of thousands of interdependent options with real-time validation and pricing.

    Rules engine serving a global dealer network

    • Configuration engine
    • 3D
    • Full-stack
See more of our work
Years in software engineering

30+

Years in software engineering

Delivering since the microcomputer era, through the web, to AI systems.

Lines of code written and re-engineered

40M

Lines of code written and re-engineered

Across banking, automotive, public sector and industrial systems.

Lower cost than the in-house effort

40×

Lower cost than the in-house effort

A clean-room re-implementation, for approximately 2.5 per cent of what the client had already spent.

Continents served

4

Continents served

Clients across Europe, the United States, the Middle East and Australia.

Each time we hired Péter, the work was exemplary, on-time, and exceeded expectations. He is easy to work with and has an excellent grasp of how to organize the work to get the end result in the quickest possible manner. Péter has a very good understanding of what it takes to make an offshore outsourcing project successful. His strong leadership allowed every project to exceed expectations.
Randy SpiveyDirector, Engineering SystemsButler Manufacturing, USA

Your next system starts with a conversation

Tell us what you are trying to ship and what is in the way. You will speak to an engineer, not an account manager — and you will get a straight answer about whether we are the right fit.

Book a consultationexperts@pannonrex.com

Typical reply within one business day · Initial consultation is free