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Custom SaaS development
From idea to a SaaS built to grow
We design and develop your SaaS end to end: multi-tenant architecture, subscription management, dashboards, API. From MVP to a version that handles real load, with no rewrite in between.
Launch my SaaS
Have a SaaS idea?
The SaaS (Software as a Service) model turns your solution into a monthly or annual subscription. No install at the client's end, everything runs in the browser, and updates land at the same time for everyone.
We build the back-office you'd expect from a 2026 SaaS: account creation, organisation management, roles and permissions, recurring Stripe billing, dashboards, API for third-party integrations. No need to stitch ten tools together, we start from a consistent base.
We deliver iteratively: we ship an MVP quickly to test the idea against the market, then grow the product based on real user feedback. More useful than spending six months polishing in the dark.
We start with project scoping to frame the MVP scope, figure out which modules add value from v1 and which can wait. Scoping gives you a number you can hold us to, not a figure that doubles mid-project.
Our fully remote team works with software vendors across France and Europe, remote for the build and on site for product workshops when it helps the scoping. If your app already exists as a desktop or single-seat version, we can also modernise it rather than starting from scratch.
Use cases
With custom SaaS development, you control your product, your data and your user experience.
API
Communicate via API
with your internal tools or partners.
Stripe
Integrate Stripe payments and subscriptions
Smooth and automated billing.
Clients
Offer a complete client portal
Dynamic dashboards, multi-role access.
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Case studies.
SaaS solutions adapted to each context
STARTUP
A fintech startup wants to launch a cash management platform for SMEs.
The solution provided: a SaaS with Open Banking connection, forecasting dashboards, automated alerts and accounting integration.
INSTITUTION
A ministry wants to offer a grant tracking portal for local authorities.
The solution provided: a secure SaaS platform with case management, validation workflows, reporting and government SSO authentication.
SME
An HR software vendor wants to transform their desktop application into a cloud solution.
The solution provided: migration to a multi-tenant SaaS architecture with Stripe subscriptions, customer portal and API for third-party integrations.
ASSOCIATION
A sports federation wants to digitize license and competition management.
The solution provided: a SaaS with club portal, online registration, member management, event calendar and real-time results.
Commitments.
Our standards for every SaaS project we develop.
Security
Reliable architecture, fine-grained access control, GDPR compliance.
Performance
Optimized response times and native scalability.
Simplified Maintenance
Documented code, automated tests, easy updates.
Scalability
Modular architecture designed to support your growth.
Continuous iterations
Short sprints, regular demos, real-time adjustments.
Transparent communication
A dedicated contact, regular updates, full visibility.
Clear and measurable tracking
Defined milestones, documented deliverables, shared progress.
Ongoing support
Technical support, corrective maintenance and feature evolution.
Projects.
Concrete custom development achievements
+ 150 projects delivered+ 10 years of experience
See all projects
Identify levers to strengthen farm autonomy
An extranet to centralize all information and documentary resources
Offer the most accurate mortgage simulation on the market
Provide tools to master energy consumption
Carry out genomic sequencing projects
Identify levers to strengthen farm autonomy
An extranet to centralize all information and documentary resources
Offer the most accurate mortgage simulation on the market
Provide tools to master energy consumption
Carry out genomic sequencing projects
Identify levers to strengthen farm autonomy
An extranet to centralize all information and documentary resources
Offer the most accurate mortgage simulation on the market
Provide tools to master energy consumption
Carry out genomic sequencing projects
Our approach.
How we build a SaaS that holds up past the MVP stage.
A single instance of the app serves all your clients, with strict data isolation per organisation. We decide together on the level of isolation (logical via a tenant_id, or physical via a dedicated schema) based on your industry: a SaaS in health or finance doesn't face the same constraints as a general productivity tool. The choice happens during the software architecture phase, before the first line of code.
We plug Stripe into the full cycle: multiple plans, trial periods, upgrades/downgrades, expired card handling, payment retries. The Stripe customer portal is directly accessible from your app, which saves you from building a full billing self-service in-house. Stripe webhooks feed your internal dashboards through a dedicated API.
We deploy on AWS, GCP or Vercel depending on context, with auto-scaling on the app layer and a database that can be replicated. In practice, scaling is prepared at architecture time, not the day traffic explodes. We set up a solid automated test suite from the start so deployments don't break production.
A SaaS MVP with authentication, Stripe billing and two or three business modules starts between €30k and €60k. A full product with multi-tenant, public API, analytics dashboards and third-party integrations sits between €80k and €200k. Upfront scoping lets us break the scope down into priorities using the MoSCoW method so the budget stays tight without dropping the features that carry the value.
For an MVP in production with paying early adopters, expect 3 to 5 months. We ship a first usable version in 8 to 10 weeks so your early users can start paying for it. We then extend the product on the back of their feedback rather than assumptions, which avoids building features that end up in the graveyard.
No-code saves time on early prototypes but hits a ceiling on performance, customisation and vendor independence. A custom-built SaaS costs more upfront, but you own it, the stack fits your business, and infrastructure costs stay linear instead of spiking with your row count. The right call as soon as the product carries a serious share of your revenue.
Benefits.
What you get with a custom-built SaaS.
A custom SaaS means predictable recurring revenue first. It also means a product you fully control — the roadmap, the pricing, the integrations, the terms of service.
Compared to no-code or template-based solutions, a custom SaaS doesn't hit a ceiling on cases the base tool can't handle. When your business has a specific rule, we write it; when a client needs an integration, we add it.
On the technical side, the architecture is built to carry you smoothly from your first ten users to your ten thousandth, without a rewrite midway.
What a custom SaaS gives you, in practice:
An app available 24/7 from any browser
End-to-end recurring billing handled by Stripe
Multi-user management with roles configurable per client
An infrastructure that absorbs growth without rebuilding
Dashboards tracking MRR, churn and LTV over time
An interface that stays usable on mobile and tablet
Ready to get started?
From scoping to prototype, to AI integration.
We support your business software projects from start to finish.