14 YEARS Senior technical consulting · Independent

Expertise that transforms
your critical systems

NSY partners with major finance and insurance players on their most demanding technical missions — and propels ambitious companies into the AI transition with next-generation websites.

14+
Years of expertise
Banking · Insurance
Reference clients
3max
Concurrent clients
Insights Latest publications

Fresh insights from the field.

Concrete field notes — AI applied to the web, SEO & GEO, critical systems. What was built, measured and verified, published regularly.

11 September 2026 · Redesign · Single account · Integration

One site, one forum, one shop, one account: bringing them together without rebuilding

PRV Concept’s website, phpBB forum and WooCommerce shop brought together without migration: one look, one account held by the forum, and proof required rather than an email address.

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23 August 2026 · Monitoring · Observability · AI

From terabytes to megabytes: monitoring is a discipline before it is a budget

Dynatrace and ELK at a large insurance company, a cron job and a dashboard on a small-business site: a factor of a million in volume, the same four questions — and what AI really brings.

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16 August 2026 · AI · Vibe coding · Method

Building your website with AI in a weekend: we took the promise at its word

The vibe-coding promise tested on nsy.fr: V1 in 4 evenings, then nearly 140 hours of piloting measured action by action. The 10/90 rule — and why AI is mostly about going further.

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8 August 2026 · AI · Chatbot · RAG

Wiring an AI chatbot into a forum: web 1.0 as a knowledge base

Years of enthusiast discussions sleep inside forums. How the PRV Concept chatbot queries the phpBB database directly — and the anti-hallucination guardrails that make the difference.

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July 29, 2026 · SEO · GEO · AI

SEO vs GEO: getting cited by ChatGPT, Claude and Perplexity

Ranking on Google is no longer enough: AI assistants pick their sources differently. How a site becomes a cited source — with the setup deployed on nsy.fr and the first crawler visits observed.

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Two missions, one standard 01 / Capabilities

A rare dual expertise,
assembled under a single name.

On one side, the experience of a senior consultant who has delivered on the most critical systems. On the other, command of the AI tools redefining web creation today.

01 / CONSULTING

Technical missions for finance & insurance

Scoping, architecture, senior expertise and recovery of complex programmes. A senior presence working directly alongside your teams — the person you assess is the person who delivers.

  • Distributed architecture
  • Legacy migration
  • Technical audit
  • DORA compliance
  • Private / hybrid cloud
  • On-mission AI expertise — team productivity
02 / AI-POWERED WEB

Websites powered by artificial intelligence

A brand-new site or a redesign of an existing one, for companies ready to take the AI leap. Design, assisted generation, model integration and edge deployment — from brief to launch.

  • New builds & redesigns
  • Marketing sites & SaaS
  • LLM integration
  • Assisted generation
  • Semantic SEO
  • Edge deployment
See the services in detail
About Profile / Cédric Barme

A single point of contact,
with years of hands-on experience.

NSY is a one-name practice. Behind every engagement, a single person — Cédric Barme — with years spent behind the scenes of France's largest financial institutions, today serving a deliberately limited number of clients.

See the background
References 02 / Proof

Critical systems in production,
demos you can try yourself.

On the consulting side, engagements take place within the largest French and European financial institutions, under NDA: the sectors, if not the names. On the web & AI side, the proof is direct — this very site is one.

01 / CONSULTING · UNDER NDA

Major financial institutions

Senior technical engagements delivered within leading banking and insurance players, in France and Europe — unnamed for confidentiality.

Retail banking Private banking Life insurance Asset management Payments Fintech
02 / WEB · AI · LIVE DEMOS

Work you can test

This site is itself a demonstration: a generative AI assistant (Mistral · EU), real-time 3D, GEO/LLMO optimisation, bilingual, zero third-party cookies. Plus PRV Concept, already in production.

↳ Let's talk about your project

A project to scope?
A programme to unblock?

Book a 30-minute call. You leave with an honest read of your situation — whether or not it leads to a mission.

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