From idea to a SaaS with subscriptions, multi-user and architecture that scales

We develop complete SaaS applications: from the MVP that validates your idea to the product that charges recurring revenue and supports thousands of users.

SaaS shipped in 3 countriesStripe native in all projectsCode that's yours, always

We develop your SaaS if you're in one of these situations

You have a validated idea and want to charge for it

You already know someone would pay for this. You need the platform that makes it possible.

You have a repetitive internal process you could sell to others

What your company does well could be a product. The jump from internal tool to SaaS requires the right architecture from the start.

Your SaaS exists but doesn't scale

It works with 50 users. With 500, it starts to fail. The problem isn't the team: it's the architecture.

You want a marketplace with complex business logic

Commissions, multi-role, multiple providers or buyers. Harder than it looks, more strategic than you think.

90% of SaaS projects fail for the same reasons

It's not bad luck. It's poorly thought-out architecture, badly integrated payments and technical decisions that cost dearly when the product starts to grow.

01

They started with features, not architecture

With 100 users everything is fine. At 1,000, the database collapses, payments fail and every new feature takes twice as long.

02

Recurring payments are more complicated than they look

Stripe has 200 pages of documentation. Subscriptions, trials, upgrades, downgrades, refunds, webhooks. Without prior experience, it breaks when it matters.

03

They didn't design for multiple tenants from the start

Adding multi-user, roles and permissions after building the system means rewriting almost everything. It costs 3x to 5x more to do it late.

04

They mixed the MVP with the final product

An MVP serves to validate, not to scale. Building it with the final product's architecture wastes budget. Building it without thinking about architecture does too.

We've solved these problems in real projects.

We don't learn on your budget. If your SaaS is half-built, we start with a technical audit (1,300 USD) to know exactly what can be kept and what needs to be rebuilt.

Everything a SaaS needs to operate and grow

Multitenant architecture

Designed so each client has their data isolated, their permissions and their configuration, without a bug from one affecting another.

Subscriptions and recurring billing

Native Stripe: plans, trials, upgrades, downgrades, automatic invoices and webhooks that don't miss events.

User and role management

Admin, operators, end clients: each profile sees and does only what's appropriate. With invitations, 2FA and action audit.

Complete admin panel

Usage metrics, MRR, churn, active users. Your business on one screen, without depending on anyone to read the data.

User onboarding and activation

The first minute inside the product is the most important. We design the flow so the user reaches value without friction.

Public API or integrations

Webhooks, documented REST API or connectors to Zapier, Slack, HubSpot. Your clients can connect your SaaS with what they already use.

Security and basic compliance

HTTPS, granular roles, rate limiting, audit logs and secure data storage practices. The minimum to sell to enterprise clients.

Stack proven in production, not experiments

Next.js / React

User interface: fast, smooth, with SSR for SEO and performance.

Laravel

Backend API with business logic, authentication, roles and events.

PostgreSQL

Relational database that scales with your SaaS without surprises.

Stripe

Recurring billing, subscriptions and international payments without friction.

From briefing to SaaS in production, step by step

01

We understand the business model

Week 1

We map how the SaaS generates revenue, who the users are and what flows are critical for launch.

Scope document with MVP functionalities, base architecture and phased estimate.
02

We design the product

Weeks 2–3

Wireframes and navigable Figma prototype. The onboarding flow, main dashboard and subscription logic designed before writing a single line.

Complete prototype to validate with real users before investing in development.
03

We build the MVP

Weeks 4–8

Development of the product core: authentication, subscriptions, central logic and admin panel.

A functional SaaS, in production, with real users and payments operating.
04

We iterate with data

Post-launch

With real feedback and usage metrics, we prioritize what to build first. Each sprint delivers measurable value.

New features, fixes and conversion improvements based on real usage.
05

We scale the infrastructure

With growth

When users arrive, the architecture is already prepared. If not, we adapt it before it becomes urgent.

SaaS that supports 10x more users without rewriting the code base.

Real ranges, no surprises

We publish ranges because we prefer you arrive at the call knowing whether it makes financial sense. The exact budget is defined once we understand your case.

SaaS MVP

from 3,000 USD

Authentication, Stripe subscriptions, product core, basic admin panel

Full SaaS

7,000 – 20,000 USD

Multitenant, advanced roles, onboarding, metrics, API and integrations

Marketplace or complex platform

15,000 – 35,000+ USD

Multi-role, commissions, provider payments, advanced business logic

Existing SaaS audit

1,300 USD (fixed price)

Architecture, security, scalability and technical debt diagnosis

Payments in phases. We never ask for the full total upfront.

SaaS we built that operate today

Jobu

πŸ‡ΊπŸ‡Έ United States

Job marketplace with profiles, listings, payments and matching. Launched in 6 weeks with architecture ready to scale.

  • MVP in 6 weeks
  • Payments with Stripe Connect
  • Complete admin panel

MyOfficeTaxes

πŸ‡ΊπŸ‡Έ United States

Tax management SaaS for American freelancers. Subscriptions, document uploads, status flow and automatic notifications.

  • Recurring subscriptions
  • Document management
  • Notification automation

Epsilon Soft

πŸ‡«πŸ‡· France

Internal platform converted to SaaS product. Multitenant architecture rewrite and zero-downtime migration.

  • Zero-downtime migration
  • Multitenant architecture
  • 40% cost reduction

What makes us different when building SaaS

We've built SaaS before

We don't learn on your budget. Subscription patterns, multitenant and scalability are solved in real projects.

You understand every technical decision

We explain architecture in business language. If you leave a meeting with doubts, we failed.

The code is yours from day one

Repository in your account, documented. If you decide to change teams tomorrow, you can do it without friction.

Phased roadmap, not all at once

Controlled investment: first the MVP, then the features that data validates. Without burning budget on features nobody uses.

Frequently asked questions about SaaS development

Evaluate your SaaS idea for free, no commitment

A 30-minute call to understand your idea, the market and what you need to build first. No upfront budget, no obligation to continue.

Schedule a free evaluation

No commitment Β· You talk directly with the technical team Β· You've already seen the prices above.

Get Started

Before you invest thousands in development, make sure you're building the right thing.

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SaaS Development | From Idea to Product with Subscriptions | Nebula Solutions