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MAG&Cie
Turnkey SaaS launch

From idea to production

MVP · multi-tenant infra · billing · monitoring

End-to-end SaaS delivery by MAG&Cie. Product scoping, development, EU infrastructure, payment, monitoring, testing, publication. No resale, single senior point of contact.

TL;DR
  • What it is

    End-to-end SaaS delivery: product scoping, MVP, multi-tenant infra, Stripe billing, monitoring, tests, launch.

  • For whom

    Solo founders, vertical SaaS editors or intrapreneurs wanting a production MVP (billing, SME HR, fleet, vet, marketplace) without hiring a team.

  • Indicative price

    EUR 15,000 to 60,000 excl. VAT depending on complexity. Personalised quote before start. EU-sovereign (OVHcloud, Scaleway).

Multi-customerSaaS billingGDPR by designMonitoring included
What we unlock

Launching a SaaS means twenty parallel tracks. We handle them all.

  • 1

    You're a solo founder with no tech team — find someone who ships end-to-end without hiring right away.

  • 2

    You have an idea but don't know where to start: product scoping, priorities, billing, GDPR.

  • 3

    You want to sign a first customer in under 3 months, on a platform that holds up under load without a rewrite next year.

  • 4

    You need to manage payments, invoices, dunning, EU VAT, refunds — without a finance team.

What we ship — from idea to production

A complete SaaS, ready to bill, with no grey zones.

Product MVP

The web app your first customers use: sign-in, roles, dashboards, admin back-office, tests on the critical journeys.

Multi-tenant infrastructure

Strict isolation between customers, EU hosting, encrypted backups, continuous monitoring. Ready to hold tens of accounts without a rewrite.

Complete SaaS billing

Recurring subscriptions, free trials, plan changes, EU VAT, customer portal, PDF invoices, automated dunning of unpaid invoices.

GDPR by design

Data mapping, vendor contracts, encryption, audit log, compliant export and deletion flows.

Supervised launch

Staging and production environments, automated releases, incident alerts, ops documentation delivered.

Publication and launch

Public landing page, domain and transactional email setup, privacy-respecting analytics.

MVPs we ship

Five SaaS ideas already scoped or shipped — to make it concrete.

Freelancers

Invoicing SaaS for freelancers

Draft and send compliant invoices, automated reminders, revenue dashboard, accounting export. Target: freelancers and micro-businesses, light monthly subscription.

SMBs

HR SaaS for SMBs (10-50)

Leave, absences, expense reports, annual reviews. A single tool that replaces three spreadsheets and an inbox. Multi-site, payroll export.

Field

Vehicle fleet management

Mileage, maintenance, safety checks, fuel cards, incidents. Mobile app for drivers, back-office for the fleet manager.

Health

Patient tracking for veterinary practices

Medical records, appointments, prescriptions, vaccination reminders, activity stats. Multi-practitioner, integration with existing billing software.

Marketplace

Local services marketplace

Provider / customer matching with booking, payment, reviews, messaging. Automatic commission, provider dashboard, mobile customer app.

MVP, PoC or full SaaS — which one first?

Three formats, three purposes. The turnkey SaaS launch is a shippable MVP, ready to bill.

PoC — Proof of concept

Validates a hypothesis in 2 to 6 weeks. Not meant to be sold. Ideal before committing to an MVP budget. €2,500 – €10,000 excl. VAT.

MVP — Minimum viable product

The turnkey SaaS launch: product shipped, first customers billed, solid base to grow. €15,000 – €60,000 excl. VAT depending on scope.

Full SaaS

The MVP's evolution once the market says yes: multi-country, advanced integrations, in-house team. Built progressively over months.

4-phase method

Sharp scoping → MVP in 8-12 weeks → hardening → run.

01

Product scoping

2-day workshops: personas, core features, pricing, GDPR, business constraints. Deliverable: spec + costed plan.

02

MVP

Releases every 2 weeks with a demo. You validate each step. Code in your private space from the first release. Internal beta mid-way.

03

Hardening

Load tests, security, performance, GDPR, monitoring, dunning. Real customer beta. Admin + user docs.

04

Run

Handover to your team, optional monthly maintenance contract, or progressive handover to your in-house tech team.

Frequent questions

How much does a turnkey SaaS launch cost?+

Indicative range €15,000 - €60,000 excl. VAT based on product complexity and marketing scope. Simple B2B MVP (multi-tenant, Stripe, admin): €15-25k. Complex SaaS (business workflows, IS integrations, mobile): €30-60k. Pricing may vary — a personalized quote is always issued after 2-day scoping, before we start.

How long?+

MVP shippable in 8-12 weeks for simple B2B scope. Hardening + customer beta 4 weeks. Total: 3-4 months idea → first paying customer. Complex cases: 4-6 months.

Do you handle marketing / acquisition?+

No — landing + tracking + transactional emails yes, but SEA, ads, content marketing stay with the client. We can recommend partners on these topics.

Do you accept sweat equity on a SaaS?+

Case-by-case, capped portfolio. See the CTO Partnership page. Turnkey SaaS is usually sold cash — sweat equity concerns long-term tech leadership missions.

/ En résumé

A SaaS to launch?

2-day scoping then quote within 48 business hours.