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SaaS

SaaS development: auth, billing, and the parts that are hard to get right

Full-stack product builds, including the multi-tenant and subscription plumbing that is consistently underestimated.

Most of the difficulty in a SaaS build is not the feature you are excited about. It is auth, billing, roles, and keeping one customer's data provably separate from another's: the parts nobody demos, that everything else depends on, and that are painful to retrofit.

Multi-tenancy in particular is an early architectural decision with a long shadow. Getting it wrong does not show up in week three. It shows up when your second-largest customer asks a question about data isolation that you cannot answer confidently.

Billing has the same shape. Subscriptions, plan changes, proration, failed payments and refunds are a system rather than an integration, and the edge cases arrive late, usually from your most valuable customers.

What SaaS covers

Capabilities

  • Auth, billing, and subscription management
  • Multi-tenant architecture and role-based access
  • API design and third-party integrations

What you end up with

  • Auth, roles and permissions that hold up as you add customers
  • Subscription billing including the awkward cases, not just the happy path
  • An API and integration surface that is designed rather than accreted

When this is the right call

Phrased the way the problem usually arrives, rather than as a service category.

  • Our website or systems feel outdated

    It exists, but it's slow, doesn't build trust, or nobody's touched it in years.

Common questions

Can you take over an existing product?
Yes, and we would start by reading it rather than proposing a rewrite. Rewrites are the most commonly over-prescribed fix in this category. Often the real problem is two or three specific decisions that can be changed without discarding everything that already works.
How do you handle billing?
Usually on an established payments provider rather than building payments from scratch. The build effort goes into the logic around it (plan changes, proration, failed payments, refunds), which is where the complexity actually lives.
What about multi-tenancy?
Decided in discovery, because it is the architectural choice with the longest shadow. The right answer depends on how isolated your customers' data has to be, and on what you will need to be able to prove about it later.

How a SaaS project runs

The same four stages as every project we take on. Discovery is free, and the scope and price come before the work starts.

  1. 01

    Discovery

    We start by understanding your business, users, and constraints, not by jumping straight to a solution.

  2. 02

    Design

    Wireframes and UI design grounded in what your users actually need, reviewed with you before any code is written.

  3. 03

    Build

    Iterative development with regular check-ins, so you see progress continuously instead of waiting for a big reveal.

  4. 04

    Launch

    We ship, monitor, and support the handoff. Launch is the start of the relationship, not the end of it.

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