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SaaS Expertise

Your SaaS scalable, secure, and compliant

We help you build a robust SaaS tailored to your real needs: onboarding, billing, role management, client portals, back-office, and business integrations. A clean, maintainable product ready to evolve.

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app.votre-saas.io / admin · revenue
Stripe · live
MRR€48,240+14.8% MoM
Active accounts312+22 this month
Churn1.8%stable
MRR · Last 12 monthsin €
Plans · MRR by offer
Starter€12,480
Business€21,600
Enterprise€14,160
Latest signups
Multi-tenant · Stripe Billing · SSO readyv4.2 · prod
01 — Why us

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.

01

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.

02

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.

03

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.

02 — Four scenarios

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.

01

B2B MVP

We start from your Figma (or an idea) and deliver a product you can sell.

BillingOnboardingRBAC
02

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.

AuditMigrationModule
03

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.

RBACAudit logAI
04

Scaling preparation

Before a funding round or a major client: architecture reinforcement, database optimization, monitoring setup, and security hardening.

ArchitecturePerformanceSecurity
03 — Tech stack

A technical foundation
for a SaaS that scales.

We tailor our stack to the client context (sovereignty, GDPR, existing in-house teams, SI integrations).

01

Frontend

Next.jsReactTypeScript
02

Back / Data

SupabasePostgreSQLDirectusn8n
03

Billing

Stripe BillingStripe InvoicingUsage-based
04

Auth & SSO

Supabase AuthAuth0KeycloakSAML
05

AI / Agents

MistralOpenAIClaudeMCPLangGraph
06

Testing

VitestPlaywright
07

Ops / Hosting

OVHScalewayDockerVercel
08

Monitoring

SentryPostHog
09

CI / CD

GitHub Actions
04 — Client case · Cindra

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 study
B2B SaaS · Equipment verification8 MONTHS · 60 USERS

Cindra

Complete B2B SaaS for fire equipment verification. From quotes to final verification PDFs, with dedicated roles and teams.

8 monthsof support, from scoping to production
60internal users with dedicated roles & teams
1tool for quotes, scheduling, field verification, final PDF
Next.jsSupabaseTypeScriptRBAC
SaaS prototyped in Lovable, Bolt, or v0? 72-hour diagnosis, recovery plan, module-by-module rebuild.
View the AI recovery offer
05 — Method

A project in five stages

A dedicated team from scoping to delivery with a dedicated project lead

01 — Scoping1 to 3 weeks

Spec, plan, estimate.

Workshop, use case mapping, constraints (IT, GDPR, security), quantified success criteria. Deliverable: functional spec + technical plan + fixed estimate.

02 — Product design2 to 4 weeks

Validated journeys.

Wireframes, user flows, design system, mockups. Full validation before any code is written.

03 — Iterative build2 to 6 months

2-week sprints.

Demo at the end of each sprint. Your IT teams involved from sprint 1, pair programming available on request.

04 — Production deployment1 to 2 weeks

Secure switch.

Load testing, security audit, switch plan, team training. No Go Live without measured quality criteria.

05 — Run & evolutionOngoing

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.

06 — Questions

Frequently asked questions

The most common questions we hear during scoping. If yours isn’t listed, reach out!

For most B2B SaaS, a shared database with logical separation is sufficient. For sensitive sectors (healthcare, finance, defense) or enterprise clients that require it, we fully isolate data per customer. We decide during scoping, with clear reasoning.

Yes. We size the infrastructure from the start to accommodate your projected growth, without over-engineering. If you scale faster than expected, we’ll adapt at the right time—not before.

Yes. We audit within 72 hours, diagnose the issues, and create a recovery plan. We handle AI-prototyped projects (Lovable, Bolt, v0) as well as no-code SaaS (Bubble). We map the existing system before rebuilding.

Yes. We typically add it when your first enterprise clients request it. Connection tracking and local data hosting are addressed on a case-by-case basis.

By default, with our standard partners (Vercel, Supabase). On OVH or Scaleway to stay within Europe, or on your own servers for sensitive cases. We choose together based on your target clients and data sensitivity.

Stripe in 95% of cases. We use more advanced solutions only if your pricing model is truly complex (usage-based, multi-currency constraints).

Your choice: a maintenance contract with us (SLA, on-call support, iterations), or a full handover to your future team with documentation and training. The code is yours, the stack is industry-standard—you’re never locked in with us.

A SaaS isn’t just development: it requires multi-tenant architecture, security, recurring payments, scalability, and a product that evolves post-launch. An agency brings these skills together and ensures continuity. Scroll builds your SaaS from scoping to production, in custom code—not on a no-code platform you’d become dependent on.
Get started

Do you have a SaaS to launch or a stalled product to get back on track?

Contact details
20 Rue des Taillandiers
75011 Paris
Reply within 24 business hours.