Regent.paris — Modernisation & Intelligence
You are trapped inside software that nobody understands anymore. I read it, I extract its logic, and I build you a modern, intelligent successor — AI-ready, delivered fast, without the pain.
The reality on the ground
Thousands of European businesses depend today on obsolete systems they can no longer evolve, that their teams no longer understand, and to which they are bound.
Shortage of experts, progressive end of support. Your critical system runs on technology the market is abandoning.
Declining or vanished vendors. Every change costs a fortune. Every bug is a crisis.
The original developer has retired. Business logic is buried in code that nobody reads anymore.
A single vendor holds all the knowledge of your system. If they leave, your business stops.
"I don't replace your software. I reposition your company for the future." — Jacques Regent, Founder of Regent.paris
The method
A structured yet agile approach: first we understand what you have, then we free what is precious, finally we build what carries you far.
Act 1 — Liberation
I read what nobody else can read anymore. I map your system, I extract the buried business logic, and I make legible what seemed incomprehensible.
Act 2 — Transformation
I rebuild your system on an open, modular, AI-ready-by-design architecture. Your data is freed, your processes are automatable, your future is open.
Act 3 — Sovereignty
My goal is that you no longer need me. I transfer knowledge to your teams, I train, I document. You take back control of your own digital destiny.
Our commitments
What sets Regent.paris apart from traditional approaches — why the timelines are shorter, the costs controlled, and the changes of direction welcome.
30 years of expertise on the systems the market has forgotten. I read your code the way a historian reads archives.
End of dependency on a single vendor, a single expert, a doomed technology.
No 18-month tunnel. A first operational version in weeks, continuous iterations.
A changing spec is not a drama — it is the next iteration. No penalty.
Open architecture, documented code, trained teams. Your autonomy is the goal, not dependency.
The break
| Criterion | Classic approach | Regent.paris |
|---|---|---|
| Delivery timelines | 18 to 36 months, often overrun | First deliveries in weeks |
| Changing specifications | Costly addenda, conflicts, delays | Welcome — it is the next iteration |
| Legacy comprehension | Partial analysis, risk of gaps | Native reading — I speak every dialect |
| AI-readiness | Not planned, requires a later rebuild | AI-ready by design from the start |
| Client autonomy | New dependency on the integrator | Skills transfer, living documentation |
| Pricing | Large accounts only | Accessible to SMEs and mid-caps |
Who for
"We can't find anyone to maintain our AS400 anymore."
I know your system, and I build what comes next.
"Maintenance costs explode every year."
A measured ROI on the rebuild, delivered in controlled phases.
"I depend on a vendor I no longer understand."
Take back control of your own information system.
"We acquired a company with an IS we don't know."
Audit, mapping, integration — I decipher the unknown.
"Our customers move to SaaS, we can't keep up."
I transform your offering to make it competitive and AI-native.
"We're trapped in proprietary software with no alternative."
Digital sovereignty and autonomy — within a controlled budget.
Track record
From Cargill to Groupama, from AS400 mainframes to modern web interfaces. A continuous trajectory in modernising critical systems, on stacks few still dare to address today.
Fifteen years in grain trading across six European countries. Programmer-analyst, project manager, technical lead, then IT manager. AS400 mainframe, RPG, CLP, DB2, Synon. Interfacing with Murex (Unix futures management) and JDE. Cross-border replication France↔United Kingdom, leading a European team.
End-to-end IT leadership: AS400 V5, ERP Orchestra, server room, Citrix, Lotus Notes, Mac. Roll-out of a global Intranet, centralised product database, reporting tools, pre-sales system for the field force. RPG, CLP and Windev developments.
AS400 legacy modernisation and full-stack development for insurance, wine industry, manufacturing, healthcare, logistics and engineering offices. Windev / Webdev / Webservices / Windev Mobile stack alongside the historic legacy, with one common thread: never break what works to bring forth what comes next.
Explicit focus on legacy systems modernisation and sovereign AI (Mistral, EU hosting, your data on your premises). Picking up the promise where off-shore subcontracting and generic consultancies have abandoned it.
Bridge between AS400 legacy and modern web: design and maintenance of Webdev 26 sites, Windev web services, business batches, and the implementation of a private secure token system. Coexistence of AS400 + Oracle + WebDev with no disruption to the historical IS.
European centralisation of financial commitments: AS400↔AS400 cross-country replication via FTP and RPG triggers, interfacing with Murex (Unix futures management) and JDE, Europe → Paris migration plan. Leadership of a European team of five.
Critical seasonal activity. Full ERP: quotes, pricing, orders, invoicing, payments, reminders. Grape intake and lot traceability via Android handheld terminals (weighing, stock). Integration of palletising machines into the software chain.
End-to-end management system: orders, invoicing, payments, reminders, files and interventions. Built-in messaging with automatic linking of e-mails to the relevant files. Unified database for client and supplier contacts.
Get in touch
A first 30-minute exchange to understand your context, assess the stakes, and see whether Regent.paris is the right answer to your problem.