Custom B2B SaaS development, from MVP to a product that scales.
We design and build your SaaS product: onboarding, billing, role management, customer portals, back office and business integrations. Maintainable, secure production code built to evolve.
A sellable MVP, a scalable architecture
the transition to scale.
Three concrete commitments that set a SaaS delivered by our team apart from a disguised AI demo.
A market-ready MVP, not a proof of concept
We deliver a real product you can sell quickly. Not a demo that needs recoding as soon as a client signs.
Designed for growth from the outset
An architecture that handles new customers, a scalable database, background processing, and monitoring from day one. No need for a rebuild when raising funds.
Serving the founder, not the agency
Short sprints, explained technical choices, code you own, and a possible handover to your future CTO. Our goal isn’t to become indispensable.
Four entry points,
one consistent method.
Four SaaS scenarios we handle. From idea to first customer, from overhaul to fundraising prep.
You need an internal tool, not a resold SaaS? See Business tool.
B2B MVP
We start from your Figma (or an idea) and deliver a product you can sell.
Existing SaaS overhaul
Your SaaS is held back by a Bubble that’s hit its limits, a Lovable / Bolt that needs recoding, or an aging stack. Audit, migration plan, and module-by-module rebuild.
Missing modules
Your SaaS is running, but it’s missing a key component: fine-grained RBAC, audit logs, an AI module, or a third-party integration. Delivered alongside your in-house team.
Scaling preparation
Before a funding round or a major client: architecture reinforcement, database optimization, monitoring setup, and security hardening.
A technical foundation
for a SaaS that scales.
We tailor our stack to the client context (sovereignty, GDPR, existing in-house teams, SI integrations).
Testing
Ops / Hosting
Monitoring
CI / CD
A B2B SaaS delivered,
from scoping to production.
Full digitisation of the fire equipment verification process. From quote creation to final verification PDF generation, including field scheduling.
Read the case studyA project in five stages
A dedicated team from scoping to delivery with a dedicated project lead
Spec, plan, estimate.
Workshop, use case mapping, constraints (IT, GDPR, security), quantified success criteria. Deliverable: functional spec + technical plan + fixed estimate.
Validated journeys.
Wireframes, user flows, design system, mockups. Full validation before any code is written.
2-week sprints.
Demo at the end of each sprint. Your IT teams involved from sprint 1, pair programming available on request.
Secure switch.
Load testing, security audit, switch plan, team training. No Go Live without measured quality criteria.
Maintenance or handover.
Corrective maintenance, iterations, or a gradual handover to your in-house team if desired. Our goal is not to become indispensable to your operations.
Frequently asked questions
The most common questions we hear during scoping. If yours isn’t listed, reach out!
Do you have a SaaS to launch or a stalled product to get back on track?
75011 Paris
Resources
Recommended guides
In-depth resources explaining the choices, methods and challenges behind this service.
SaaS applications: definition, architecture, stages and costs
Understand the SaaS model, its architecture, the stages from MVP to scale, cost drivers and production constraints.
How much does SaaS development cost today?
What is the cost of developing a SaaS today? Discover the real cost drivers, the budget for a SaaS MVP, the monthly costs, and the tools to plan for.
MVP vs POC vs prototype: what to build first to avoid wasting 3 months?
MVP vs POC vs prototype: compare the 3 formats, find out what to build first, and avoid a 3-month delay on your project.
What is an MVP? Everything you need to know about the Minimum Viable Product
MVP (Minimum Viable Product) in 2026: definition, key components, how to develop it quickly with AI (Lovable, Bolt) and avoid the non-scalable prototype trap.
Proof
Related case studies
Delivered projects showing this expertise in real-world contexts.
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Related services
Complementary expertise for building a coherent delivery path.
Stripe integration
Payments, subscriptions, usage-based billing and marketplaces built on Stripe, tested and ready for an audit.
UX/UI design
Screens designed for real use: user journeys, conversion, accessibility and a consistent brand, ready to build.
Functional and technical scoping
Scope, user journeys and budget defined in 1 to 3 weeks, in a document any provider can use.