Bespoke software development
Your business is unique. Your software should be too.
Web apps, dashboards, process automation, complex business logic. We build the software that fits your reality. Not the other way around.
The cost of doing nothing
What we eliminate
Your real blockers. Not a feature list.
Processes living in people's heads
Your business logic lives in spreadsheets, emails, sticky notes. When someone leaves, the know-how leaves with them. We turn it into structured, durable software.
Hours lost on repetitive tasks
Manual exports, copy-pasting between tools, email approvals. Your team spends its days feeding processes instead of moving your business forward.
Data scattered everywhere
CRM here, invoicing there, reporting in a Google Sheet. Every sync is manual, every duplicate is a risk. You have no single source of truth.
No visibility into your business
No reliable dashboard. No real-time metrics. You're steering by gut instead of data. Good decisions arrive too late.
Why now
Every month without the right tool is a month given to your competition.
How many hours do your teams spend on tasks software would handle in seconds?
Multiply by your payroll. By twelve. That number is the annual cost of your status quo. Not an exceptional expense — a silent, permanent leak.
Meanwhile, other SMEs are automating.
Not necessarily large groups. 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 data-entry error. An audit that reveals gaps. The right time to act is before the constraint becomes an emergency.
What we build
From dashboard to full software. We cover the whole spectrum.
Every project is different. Here are the types of solutions we deliver regularly.
Dashboards & Analytics
Navigate by data. Not by instinct.
Custom dashboards, real-time KPIs, automated reports. Your decisions are based on data, not intuitions.
- Sales performance tracking
- Operational monitoring
- Compliance reports
Dashboard
Vue d'ensemble
1 247
Réservations
+12%87%
Occupation
+5pt€48k
CA mois
+18%4.8★
Satisfaction
stableÉvolution mensuelle
Process automation
Recover lost hours, every week.
The repetitive tasks eating your days. We identify them, code them, they disappear. Your teams get time back.
- Approval workflows
- Document generation
- Cross-system synchronisation
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
Custom business tools
Your business logic, finally encoded correctly.
Your business has rules nobody else has. We build the software that respects them. CRM, back-office, client portal.
- Reservation management
- Partner portals
- CRM and client tracking
Integrations & APIs
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.
- ERP / CRM integration
- APIs for mobile apps
- Third-party connectors
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
Integration
It integrates with what you already have.
There's no question of starting from scratch to adopt new software. We start from your organisation as it is — your tools, your habits, your data — and graft what we build onto it.
Your existing tools keep working
We connect to what you already use. Your CRM, your accounting system, your internal databases. No painful migration, no blank slate. The existing stays; we enrich it.
Your teams keep their bearings
The software follows your real processes, not the other way around. Your colleagues find their working logic in a tool designed around them — not around a vendor's idea of your business.
A single source of truth
All your data in one place, up to date, accessible by the right people. No more files floating around, no more duplicates, no more outdated versions sent by mistake.
Bespoke software doesn't replace what works. It connects and structures what already exists.
Our standards
What we never compromise on.
Security is not a layer added at the end. It's in every architectural decision. OWASP Top 10, GDPR, French hosting, fine-grained access control. Your data stays with you.
No shortcuts. Unit tests, integration tests, systematic code reviews. Nothing touches production without going through the full pipeline. Technical debt costs more than well-written code.
A slow or complicated tool gets bypassed by your teams. Clean interfaces, navigation in 3 clicks max, response time < 200ms. We build tools people actually use. Not bloatware.
Your teams
Software your teams actually use.
A tool your colleagues avoid or work around is a lost investment. We build software people open every morning without thinking.
Designed for humans, not experts
No jargon. No endless menus. No interfaces designed for technical profiles. Every screen has one reason to exist. Your teams understand and act from day one.
Training and documentation included
We don't deliver software and disappear. We train your teams, document every use case, and guide onboarding until full autonomy. The tool is delivered, and so is adoption.
It grows with your business
Your company isn't static. Neither is your software. New modules, feature adjustments, scaling. It follows your growth without rebuilding everything at each stage.
Our method
Understand first. Build second.
No blind quoting. Every project starts with a deep dive into your business. We don't write a line of code until we know exactly what needs solving.
Immersion
We map your processes, identify friction points, define scope with you.
Architecture & UX
Tech stack, APIs, data model, interface wireframes. Everything validated before the first line of code.
Build
2-week sprints. You test and approve each delivery. No tunnel. No surprises.
Testing & QA
Automated and manual tests. Full coverage before any deployment.
Launch
Deployment, monitoring, team training. We stay until everything runs smoothly.
Immersion
We map your processes, identify friction points, define scope with you.
Architecture & UX
Tech stack, APIs, data model, interface wireframes. Everything validated before the first line of code.
Build
2-week sprints. You test and approve each delivery. No tunnel. No surprises.
Testing & QA
Automated and manual tests. Full coverage before any deployment.
Launch
Deployment, monitoring, team training. We stay until everything runs smoothly.
Bespoke vs. generic
A SaaS imposes its rules. Your tool adapts to yours.
Generic software covers 80% of use cases. The remaining 20% is where your value is created. That's exactly where we come in.
Bespoke software isn't a luxury. It's the choice not to force your business into a mould that isn't its own.
Your investment
An asset on your balance sheet. Not an endless rent.
When you pay a SaaS licence, you pay for access. When you invest in bespoke software, you own something.
The code is entirely yours
At delivery, you receive the full source code, documentation, and all rights. If you change technical partners tomorrow, everything stays with you. No dependency, no hostage situation.
An asset that holds value
Your bespoke software is part of your company's assets. It can be valued during an audit, a sale, or a fundraising round. It's a property you own — not a monthly expense line.
Nobody decides for you
No surprise price hike. No feature removed because a vendor changed strategy. Your tool evolves according to your priorities, at your pace, on your terms.
Maintainable by any team
We deliver clean, documented, tested code. If you build an internal tech team or change partners, the project can be picked up and continued without starting over.
FAQ
Your questions. Our answers.
A SaaS covers standard use cases. If your business logic has specific requirements, you'll spend more time working around the tool than using it. We build exactly what you need.
1 to 2 weeks. We speak with your teams, map your processes, identify friction points. You leave with a detailed specification and a precise quote.
First functional module in 4 to 6 weeks. We deliver by sprints. You test from the first weeks, not at the end.
Entirely. Source code, documentation, rights. All delivered. No technical or contractual lock-in. If you want to change vendor tomorrow, you can.
Yes. We audit the existing work first, identify what holds up, and migrate cleanly. No unnecessary rewrite.
Hosted in France, GDPR compliant. We manage deployment, monitoring, and backups. Your data never leaves the country.
Bespoke software isn't reserved for large groups. We build to the scale of your real need, not oversized platforms. And when you compare to the real cost of the status quo — lost time, errors, team frustration — the investment often turns out to be lighter than it looks.
That's a common situation. A good developer isn't necessarily a good project partner. At NerionSoft we work with a structured method: scoping, validated architecture, sprints with regular feedback. No tunnel. You see progress every week.
That's precisely why we deliver clean, documented, thoroughly tested code. It can be maintained by us, an internal team you build, or another partner. You're not dependent on anyone. If you continue with us, we'll be here. If not, you have everything in hand.
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