# SaaS Development UK

Source: https://dijituldevelopments.co.uk/saas-development/
Updated: 2026-10-10

> dijitul developments builds SaaS products for UK founders and established businesses turning an in-house tool into something they can sell. We handle multi-tenant architecture, Stripe subscription billing, onboarding, admin tools and the APIs customers expect. Work starts with a free chat and is delivered in phases, each with a fixed-price quote.

## Problems this solves

- You built a tool for your own business and other firms keep asking to use it
- A prototype works for one customer but cannot safely hold data for fifty
- Subscriptions are invoiced by hand and failed payments go unnoticed
- Every new customer needs a developer to set them up
- You need investor-ready software without hiring a full in-house team yet

## Key facts

- Multi-tenant design with strict data separation between customer accounts
- Subscription billing with Stripe Billing, Checkout and the customer portal
- Plans, trials, seat limits and feature flags handled in code, not by hand
- Webhook handling for payment success, failure and cancellation
- Built in Laravel or Node.js/TypeScript with React or Vue front ends
- Phased fixed-price quotes, and the code and IP belong to you

## What makes SaaS different from a normal web app

A SaaS (software as a service) product is a [web application](https://dijituldevelopments.co.uk/web-application-development/) that many separate customers pay to use. That adds problems a single-company system never has. Each customer's data must be completely separate. Sign-up, billing and onboarding must run without a human. Plans, limits and trials need enforcing in code. And because you are now the supplier, uptime, support tooling and security reviews become your responsibility.

dijitul developments builds SaaS for two kinds of client: founders with a product idea, and established businesses who built an internal tool that other firms now want. The second group is common and often underrated: you already know the problem better than any outsider.

## Multi-tenancy done properly

The most important early decision is how tenants (customer accounts) are separated. The main options are:

| Approach | How it works | Suits |

| Shared database, tenant column | Every row carries a tenant ID, enforced by global query scopes | Most B2B SaaS with many small to mid-size accounts |
| Schema per tenant | One PostgreSQL schema per customer | Products needing stronger separation without many servers |
| Database per tenant | Each customer gets their own database | Fewer, larger customers with contractual data isolation |

Whichever we choose, we write automated tests that try to read another tenant's data and must fail. Leaking one customer's records to another is the fastest way to lose a SaaS business, so it gets tested on every release.

## Billing, plans and payments

We usually build subscription billing on Stripe. Stripe Billing handles recurring charges, trials, proration on plan changes and VAT-aware invoices, and the Stripe customer portal lets subscribers update cards and download invoices without contacting you. Your app listens to Stripe webhooks such as `invoice.paid`, `invoice.payment_failed` and `customer.subscription.updated`, and switches features on or off accordingly. Webhook handlers are idempotent, so if Stripe sends the same event twice nothing happens twice.

For UK customers paying by card, Strong Customer Authentication means some payments need a 3D Secure check. Stripe's Payment Intents flow handles that, and we build the emails that bring a customer back to complete it. More on this is on our [Stripe integration](https://dijituldevelopments.co.uk/stripe-integration/) page.

## The parts customers never see

A SaaS business runs on internal tools. We build a super-admin area where your team can search accounts, see billing status, extend trials, and impersonate a user (with an audit log entry) to reproduce a support issue. We add feature flags so you can release new features to a few customers first. We add health checks, error tracking and queue monitoring, because silent failures in background jobs are what customers notice first.

Many B2B buyers will ask for SSO, a data processing agreement, and an export of their data. Building tenant-level export and deletion early makes those conversations simple, and keeps you in step with UK GDPR obligations as a data processor.

## Selling to businesses: security questionnaires and integrations

Once you sell to larger companies, their IT and procurement teams will send a security questionnaire. Expect questions about where data is hosted, how it is backed up, who has access, whether passwords are hashed, whether you support SSO and two-factor login, and how you handle a breach. We design with those answers in mind: UK or EU hosting where required, encrypted backups, least-privilege admin access, SSO through OpenID Connect or SAML for enterprise plans, and audit logs a customer admin can view.

B2B customers also want your product to talk to theirs. A documented REST API with per-tenant API keys, rate limits and outbound webhooks turns your SaaS into part of their stack, which makes it much harder to cancel. See [API development](https://dijituldevelopments.co.uk/api-development/) and [webhook development](https://dijituldevelopments.co.uk/webhook-development/) for how we build them. Integrations with accounting packages such as Xero are common add-ons that customers will pay for on higher plans.

## Starting small and growing

Most SaaS products should not launch with every feature. We often start with an [MVP](https://dijituldevelopments.co.uk/mvp-development/) phase: sign-up, the core workflow, Stripe billing and a basic admin area. Real customers then tell you what to build next. Each later phase gets its own fixed-price quote after a free chat, so spend tracks traction.

The code and intellectual property are yours, which matters to investors and buyers. If you later hire an in-house team, they inherit a standard Laravel or Node.js codebase with tests and documentation. See [bespoke software development](https://dijituldevelopments.co.uk/bespoke-software-development/) for our wider approach, or [book a free chat](https://dijituldevelopments.co.uk/contact/).

## What we deliver

- Multi-tenant application with sign-up, team invites and roles
- Stripe subscription billing, plan changes, proration and dunning emails
- A super-admin area for support, impersonation and account management
- Usage limits, feature flags and plan-based permissions
- A public API with keys or OAuth for customer integrations
- Analytics on sign-ups, conversions and churn

Technologies: Laravel, Node.js, TypeScript, Stripe Billing, PostgreSQL, Redis, React

## FAQs

### Can you turn our internal tool into a SaaS product?

Yes. dijitul often starts by reviewing the existing tool, then adds multi-tenancy, self-service sign-up, Stripe billing and an admin area. Sometimes the existing code can be adapted; sometimes it is quicker and safer to rebuild while keeping the data model you have proven.

### Who owns the intellectual property?

You do. dijitul transfers the source code and IP to you on payment, which matters if you raise investment or sell the business. We do not charge licence fees for the software we build for you.

### Which payment provider do you use for subscriptions?

Usually Stripe, because Stripe Billing covers trials, proration, invoices, SCA and a hosted customer portal. We can also work with GoCardless for Direct Debit where B2B customers prefer it. Webhook handling is idempotent so payments never trigger duplicate actions.

### How do you keep each customer's data separate?

We choose a tenancy model, such as a tenant ID on every row, a schema per tenant or a database per tenant, and enforce it in the data layer. Automated tests deliberately try to read across tenants and must fail on every release.

### How is a SaaS build priced?

dijitul quotes SaaS in phases. After a free chat we scope a first release, usually the core workflow, billing and admin, and give a fixed-price quote. Later phases are scoped and priced once real customers are using the product.

## Pricing and contact

Every project gets a fixed-price quote after a free initial chat and a short scoping stage. You own the code and the data. Book a free chat: https://dijituldevelopments.co.uk/contact/ · 01623 650333 · info@dijitul.uk