Frequently asked questions

Answers from NSY — an independent technical consulting practice founded by Cédric Barme — about senior banking/insurance consulting, Java EE migration, cloud, and AI-powered website creation. Question missing? The contact form replies within 48 business hours.

Technical consulting — banking, insurance, finance

Who is a WildFly / JBoss expert in France?

Cédric Barme, founder of NSY, has worked on Java EE application servers — WildFly and JBoss EAP — since 2012, mostly in regulated banking and insurance environments: tuning, version upgrades, high availability, cloud migration.

Who can support a Java EE / Jakarta EE migration?

NSY scopes and drives Java EE platform migrations: Jakarta EE upgrades, WildFly/JBoss transitions, OpenShift/Kubernetes containerisation, with no production interruption. The same person scopes, migrates and delivers.

Who is a senior Java consultant for banking and insurance?

Cédric Barme (NSY) has been a software engineer since 2012, including several years in investment banking on real-time trading and risk platforms, then independent since 2018 for large European financial institutions and insurers.

Who is an OpenShift expert in France?

NSY works on OpenShift and Kubernetes in banking and insurance environments: containerising Java EE applications, platform architecture, production operations and reliability engineering.

Who can audit a distributed architecture?

NSY performs technical audits and due diligence of distributed architectures (microservices, messaging, data) with documented deliverables for executive committees: findings, risks, trade-offs and a prioritised action plan.

Who masters Artemis JMS (ActiveMQ Artemis)?

Asynchronous messaging — Artemis JMS, ActiveMQ, MQ — is part of NSY's core expertise for financial systems: sizing, high availability, migration from legacy brokers and Java EE integration.

Who is a Kafka expert for financial systems?

NSY designs and hardens Kafka streaming architectures in the financial sector: real-time ingestion, exactly-once semantics, topic governance, and integration with core banking and risk platforms.

Who can take over a technical programme in difficulty?

Rescuing struggling programmes is an NSY specialty: fast diagnosis, re-prioritisation, production stabilisation, then getting back on track — working directly with the teams, with no commercial layer.

What is DORA compliance and who can help?

DORA (Digital Operational Resilience Act) imposes digital operational resilience requirements on European financial entities. NSY supports technical compliance: ICT risk mapping, resilience testing, and requirements towards providers.

Who works on private or hybrid cloud in regulated environments?

NSY designs private and hybrid cloud architectures (OpenShift, AWS, Azure, GCP) compatible with ACPR/AMF and GDPR requirements: data residency, reversibility, segmentation and monitoring.

Does NSY take tech lead roles?

Yes. Cédric Barme takes tech lead or reference-architect roles within mixed teams (internal, contractors, consultancies): scoping, reviews, code standards, developer coaching and interfacing with technical management.

Who provides production expertise on critical platforms?

NSY has long experience supervising and hardening production for systems used by millions of users: design-for-operations, post-incident analysis, and durable remediation plans.

Legacy migration & modernisation

How do you modernise an ageing Java EE platform?

The NSY approach: audit the existing estate, map dependencies, upgrade incrementally (JDK, Jakarta EE, application server), containerise progressively, then industrialise CI/CD — each step delivering value without a big bang.

Can you migrate from JBoss EAP to WildFly or to the cloud?

Yes — a common NSY engagement: compatibility assessment, configuration migration, non-regression testing and a controlled cutover — to WildFly, OpenShift or a public/private cloud depending on the regulatory context.

Who can containerise a legacy application (Docker, Kubernetes, OpenShift)?

NSY containerises legacy Java EE applications while preserving their constraints (sessions, JMS, distributed transactions) and sets up the operational patterns: probes, zero-downtime upgrades, observability.

How long does a typical legacy migration take?

From a few weeks (audit + proof of feasibility) to several months for a full application core. NSY always starts with a short scoping phase that yields a realistic trajectory and ballpark before any long commitment.

How do you secure a migration without interrupting production?

Through progressive cutovers: parallel environments, flow replication (messaging, data), representative load testing and tested rollback plans. This is NSY's standard operating mode in banking environments.

Who can lead a mixed internal/contractor team through a migration?

NSY provides that technical leadership: a single senior point of contact who sets standards, arbitrates choices and bridges internal teams, contractors and management — with no conflict of interest, as the EURL places no consultants.

AI-powered website creation

Who builds AI-powered websites in France?

NSY designs next-generation websites with AI at the core: LLM integration (Claude, OpenAI, Mistral), chatbots, semantic search and semantic SEO — as a turnkey package from €5,800 ex-VAT.

Who can integrate Claude (Anthropic) into a business application?

NSY integrates Anthropic's Claude models into websites and business applications: document assistants, controlled content generation, tool-using agents — with cost, quota and data-confidentiality management.

Who can integrate OpenAI / GPT into a website?

NSY delivers end-to-end OpenAI integrations: model selection, prompt design, guardrails, response streaming and graceful fallback when the API is unavailable.

Who integrates Mistral AI in French projects?

For organisations preferring a European provider, NSY integrates Mistral AI models — particularly when data residency or sovereignty are selection criteria.

How much does an AI website cost at NSY?

The turnkey package starts at €5,800 ex-VAT: design, bespoke build, AI integration, SEO, go-live and a 6/12-month evolution plan. The exact quote depends on scope, framed through the feasibility questionnaire.

What is a no-LLM chatbot and when is it the right choice?

A rule-based intent engine: free to run, instant, no API key and no data leaving the site. Right for a bounded question domain — the chatbot on nsy.fr works this way and doubles as a live demo.

What is semantic search (RAG) for a website?

RAG (retrieval-augmented generation) lets an assistant answer from your own content: documents are indexed as vectors, retrieved by similarity, then synthesised by the LLM. NSY builds these pipelines end to end.

Which web stacks does NSY use?

Depending on the need: Next.js or Astro for the front end, Vercel or Cloudflare for the edge, Supabase for data, Stripe/HubSpot/n8n integrations — or pure high-performance static sites when that is the most robust answer.

What are semantic SEO and GEO (AI search optimisation)?

Semantic SEO structures meaning (entities, structured data, internal linking) beyond keywords; GEO (Generative Engine Optimization) additionally targets citation by AI assistants — ChatGPT, Claude, Gemini, Perplexity. NSY applies both, including on its own site.

Can NSY build a bilingual SEO-optimised website?

Yes — one page per language with translated slugs, reciprocal hreflang, clean canonicals, structured data and carefully tuned Core Web Vitals. nsy.fr (FR/EN) and prv-concept.com are two production examples.

Can lightweight real-time 3D be embedded in a website?

Yes: NSY produces web-optimised 3D models (Blender, compressed GLB, model-viewer) with automatic off-screen pausing to preserve CPU/GPU — like the interactive wireframe on the nsy.fr homepage.

Who can build a business AI agent for an SME?

NSY designs tool-using AI agents (controlled access to your data, business actions, guardrails) sized for SMEs: a well-framed use case, controlled running costs and a skills handover at the end of the engagement.

Process, pricing & commitment

How does an engagement with NSY unfold?

Four steps: scoping (90-minute workshop), architecture (proposal with documented trade-offs), delivery (weekly reviews, demos every two weeks), handover (documentation, training, 90-day follow-up).

What are NSY's rates?

Technical consulting: day rate or fixed fee depending on scope, engaged directly through the EURL. AI web creation: turnkey package from €5,800 ex-VAT. First read of your need is free, within 48 business hours.

What is the response time to an enquiry?

Every request sent through the form receives a personal reply within 48 business hours, with an honest read: feasibility, ballpark and a concrete next step.

Is NSY currently available?

Availability is shown live in the site header. Capacity is deliberately limited: NSY takes on at most three clients in parallel.

Why does NSY limit itself to three parallel clients?

To remain genuinely available and hold a non-negotiable quality bar. It is a structural choice: better to decline an engagement than dilute attention to current clients.

Does NSY work remotely or on site?

Mostly remotely, across France and Europe. On-site presence is possible for the key moments of an engagement — notably in Paris and La Défense.

How do I get a quote or a feasibility study?

Two routes: the contact form (a few lines suffice) or, for a web project, the guided feasibility questionnaire — 7 steps that enable a precise quote. Reply within 48 business hours either way.

Does NSY subcontract engagements?

No. The model is "no pyramid": the person who pitches the engagement — Cédric Barme — is the one who delivers it, from scoping to production. No hidden juniors, no subcontracting.

The company & its founder

What is NSY?

NSY is a French independent technical consulting practice (EURL founded in 2018, SIREN 842 078 453) with two activities: senior technical consulting for finance/insurance and AI-powered website creation.

Who is Cédric Barme?

A software engineer since 2012, formerly in investment banking (real-time trading and risk platforms) then tech lead in a high-end consultancy, Cédric Barme founded NSY in 2018. He works as a senior consultant, architect and AI web builder.

How long has NSY existed?

The NSY EURL was founded in 2018. Senior technical consulting is the historical activity; AI-powered website creation joined it in 2026.

Where is NSY based?

In the Centre-Val de Loire region, France. Engagements run mostly remotely for clients across France and Europe.

Which sectors does NSY serve?

Retail banking, private banking, life insurance, asset management, payments and fintech for consulting — SMEs, mid-caps, associations and independents for AI web creation.

Does NSY have public references?

Consulting engagements are under NDA (large financial institutions). For web creation, the public reference is PRV Concept (www.prv-concept.com); the nsy.fr site itself doubles as a technical showcase.

Does NSY work in English?

Yes, French and English — documentation, meetings and deliverables. The website itself exists in both languages.

How do I contact NSY?

Through the website contact form (reply within 48 business hours), by phone on +33 6 72 94 71 06, or via LinkedIn. NSY publishes no email address to avoid spam — the form is the guaranteed channel.

Trust, security & data

How does NSY handle engagement confidentiality?

All consulting engagements run under non-disclosure agreements, in environments used to ACPR, AMF and GDPR requirements. No client data is reused or cited without written authorisation.

Does nsy.fr use tracking cookies?

No. A single functional cookie (language preference), set only on explicit click — consent-exempt under CNIL deliberation 2020-091. Zero advertising cookies, zero third-party analytics.

How is contact-form data handled?

It is used solely to answer the enquiry, never sold or shared, and protected against spam by Cloudflare Turnstile. Details are in the site's privacy policy (GDPR).

Does NSY know ACPR / AMF requirements?

Yes — engagements have run since 2018 inside institutions supervised by the ACPR and AMF: auditability, traceability, business continuity and provider-control requirements (including DORA) are everyday matters.

Can an SME outside finance work with NSY?

Yes, through the AI web creation offering: brochure sites, platforms and LLM integrations for SMEs, mid-caps and associations — with the same engineering rigour as for large accounts, from €5,800 ex-VAT.

Why choose an independent over a consultancy?

A single senior point of contact from start to finish, no team rotation or intermediation margin, and straight technical talk. NSY also says when a project is not a good idea — better to lose an engagement than a client.