Bespoke software development
Web apps, dashboards, process automation, complex business logic. We design software that fits your reality. Not the other way round.
The cost of doing nothing
What we eliminate
Your business logic lives in spreadsheets, emails, and sticky notes. When someone leaves, the know-how leaves with them. We turn it into structured, durable software.
Manual exports, copy-pasting between tools, email approvals. Your team spends its days feeding processes rather than driving your business forward.
CRM here, billing there, reporting in a spreadsheet. Every sync is manual, every duplicate is a risk. You have no single source of truth.
No reliable dashboard. No real-time metrics. You manage by instinct instead of by data. The right decisions always come too late.
Why now
How many hours do your teams spend on tasks that software would handle in seconds?
Multiply by your payroll. By twelve. That figure is the annual cost of your status quo. Not an exceptional expense — a silent, permanent drain.
Meanwhile, other SMEs are automating.
Not necessarily large corporations. Companies your size, in your sector, who decided to stop losing time on processes that no longer evolve.
Waiting for the right moment often means waiting for a crisis.
A key departure. A costly input error. An audit that exposes gaps. The right time to act is before the constraint becomes an emergency.
Integration
There is no question of rebuilding everything from scratch to adopt new software. We start from your organisation as it stands — your tools, your habits, your data — and graft what we build onto it.
We connect to what you already use. Your CRM, your accounting software, your internal databases. No painful migration, no reset. The existing stays — we enrich it.
The software follows your real processes, not the other way round. Your colleagues find their working logic in a tool built around them, not around a vendor's idea of your business.
All your data in one place, up to date, accessible by the right people. No more floating files, no more duplicates, no more outdated versions sent by mistake.
Bespoke software does not replace what works. It connects and structures what already exists.
Our standards
Security is not a layer bolted on at the end. It is present in every architecture decision. OWASP Top 10, GDPR, hosting in France, fine-grained access control. Your data stays with you.
Zero shortcuts. Unit tests, integration tests, systematic code reviews. Nothing reaches production without passing through the full pipeline. Technical debt costs more than code written properly.
Slow or complicated software gets bypassed by your teams. Clean interfaces, navigation in 3 clicks max, response time < 200ms. We build tools people actually use. Not bloated platforms.
Your teams
A tool your colleagues avoid or work around is a wasted investment. We design software people open every morning without thinking twice.
No jargon. No endless menus. No interfaces designed for a specialist. Every screen has a single reason to exist. Your teams understand and act from day one.
We don't deliver software and disappear. We train your teams, document every use case, and support adoption through to full autonomy. The tool is delivered — and so is the handover.
Your company is not static. Neither is your software. New modules, feature adjustments, scaling up. It follows your growth without requiring a full rebuild at every stage.
Our method
No quotes in the dark. Every project starts with an immersion in your business. We write no code before knowing exactly what needs to be solved.
We map your processes, identify friction points, and define the scope together with you.
Tech stack, APIs, data model, interface mockups. Everything is validated before the first line of code.
2-week sprints. You test and validate at each delivery. No black box. No surprises.
Automated and manual testing. Full coverage before any production deployment.
Deployment, monitoring, team training. We stay until everything runs smoothly.
We map your processes, identify friction points, and define the scope together with you.
Tech stack, APIs, data model, interface mockups. Everything is validated before the first line of code.
2-week sprints. You test and validate at each delivery. No black box. No surprises.
Automated and manual testing. Full coverage before any production deployment.
Deployment, monitoring, team training. We stay until everything runs smoothly.
Bespoke vs. generic
Generic software covers 80% of use cases. The remaining 20% is where your value is created. That is exactly where we come in.
Bespoke is not a luxury. It is the choice not to force your business into a mould that was never made for it.
Your investment
When you pay for a SaaS licence, you pay for access. When you invest in bespoke software, you own something.
At delivery, you receive the complete source code, the documentation, and all rights. If you change technical partner tomorrow, everything stays with you. No dependency, no lock-in.
Your bespoke software is part of your company's assets. It can be valued during an audit, a sale, or a fundraising round. It is something you own — not a monthly expense line.
No surprise price hikes. No features removed because a vendor changed strategy. Your tool evolves according to your priorities, at your pace, on your terms.
We deliver clean, documented, tested code. Whether you build an in-house technical team or change partner one day, the project can be picked up and continued without starting from scratch.
Describe your blocker. First technical analysis delivered within 48h.
Discuss my projectFAQ
A SaaS covers standard use cases. If your business logic has specific requirements, you will spend more time working around the tool than using it. We build exactly what you need.
1 to 2 weeks. We talk with your teams, map your processes, and identify friction points. You walk away with a detailed specification and a precise quote.
First functional module in 4 to 6 weeks. We deliver in sprints. You test from the very first weeks — not at the end of the project.
Entirely. Source code, documentation, rights. Everything is delivered. No technical or contractual lock-in. If you want to change provider tomorrow, you can.
Yes. We audit the existing codebase first, identify what holds up, and migrate cleanly. No unnecessary rewrite.
Hosted in France, GDPR compliant. We handle deployment, monitoring, and backups. Your data never leaves the territory.
Bespoke software is not reserved for large enterprises. We build to the scale of your real need — not oversized platforms. And when you compare against the true cost of the status quo — lost time, errors, team frustration — the investment often turns out lighter than it first appears.
That is a common situation. A good developer does not necessarily make a good project partner. At NerionSoft, we work with a structured method: scoping, validated architecture, sprints with regular feedback. No black box. You see progress every week.
That is precisely why we deliver clean, fully documented, and thoroughly tested code. It can be maintained by us, by an in-house team you build, or by another provider. You depend on no one. If you continue with us, we will be there. If not, you have everything in hand.
Chaque vendredi, une idée concrète pour optimiser votre site, vos process ou vos automatisations. Sans spam, désinscription en un clic.
What we build
Every project is different. Here are the types of solution we deliver regularly.
Make decisions from data. Not from gut feeling.
Bespoke dashboards, real-time KPIs, automated reports. Your decisions are grounded in data, not intuition.
Dashboard
Vue d'ensemble
1 247
Réservations
+12%87%
Occupation
+5pt€48k
CA mois
+18%4.8★
Satisfaction
stableÉvolution mensuelle
Recover hours every single week.
The repetitive tasks that eat your days. We identify them, we code them, they disappear. Your teams get their time back.
Exécution en cours
3 / 4 étapesDéclencheur
Réservation reçue
0.0s
Validation
Données & dispo.
0.2s
Notification
Email + SMS client
1.1s
Facturation
Génération PDF
…
Historique des exécutions
Your business logic, finally encoded correctly.
Your business has rules no one else has. We build the software that honours them. CRM, back-office, client portal.
One source of truth. Zero manual sync.
Your tools don't talk to each other? We connect them. Robust APIs, real-time sync, single data source.
Connecteurs actifs
3/4 healthyCloudbeds PMS
1 247 enreg · 12s
Stripe Payments
312 enreg · 28s
Sage Facturation
89 enreg · 1min
Salesforce CRM
2 041 enreg · 8min
Journal temps réel