SaaS Development: From MVP to Recurring Revenue

Building a SaaS product is different from building a website or a portal for a single company. The same application serves many customer organisations, and each one's data must be kept strictly apart. That makes architecture the first real decision: a separate database per customer, a shared database with a tenant identifier, or isolation enforced at database level with PostgreSQL Row-Level Security? We choose together, based on your expected customer base, compliance requirements and budget, and record the reasoning in the written scope. If you need an internal tool used only by your own company, custom software development is usually the better starting point.

We recommend starting with an MVP. In the scope meeting we identify the core workflows that carry your value proposition and move everything else to a separate later list. Sign-up and onboarding, customer accounts with team invitations, role-based permissions, subscription plans and a basic admin panel go into the first release of most SaaS products. Cost depends on the number of modules, integrations, the complexity of the permission model and any data migration. For clearly scoped work you receive a written quote within 24 hours. If your product should include AI features, we place them on the same roadmap through our AI software development work.

Billing is the revenue engine of any SaaS. With Stripe Billing or Paddle we set up monthly and annual plans, free trials, upgrades and downgrades, usage-based pricing, automatic invoices and dunning for failed payments. If you sell across the EU, for example to customers in Germany or the Netherlands, we handle VAT and reverse-charge logic with the payment provider's tax tooling, or use a merchant-of-record model where that suits you better. Invoices from us can be issued in EUR or PLN.

Security and compliance are designed in from the start. Authentication, two-factor login and SSO (SAML/OIDC) for enterprise customers, audit logs, encrypted backups and API security aligned with OWASP guidance are part of the standard scope. For GDPR we plan the data processing agreement, retention periods and the flows that let users export or delete their data, and we offer hosting in an EU region by default. Connections to accounting, CRM or email tools are planned with our API and system integration approach.

Throughout the project you receive weekly progress reports and see a working build regularly. On delivery, the source code, admin panel, cloud and payment provider accounts are transferred to your company; nothing stays registered in our name. After launch we provide maintenance covering monitoring, security and dependency updates, performance work and new features, with scope and duration agreed in the contract. You talk to us in English, German or Polish via video call, phone or email.