SaaS Development
Turning a product idea into software people can sign up to and pay for: tenancy and permissions, authentication, billing, onboarding and the admin surface behind it. Built as a first version that does one thing completely.
The problem this solves
A SaaS product is not a website with a login. It is a set of decisions — tenancy, permissions, billing, data isolation, background work — that are cheap to make correctly at the start and expensive to change once customers depend on them.
Most first versions stall in one of two ways: they are built as a prototype that cannot take a paying customer, or they are over-engineered for scale that has not arrived and never ship at all.
What we build
- Multi-tenant architecture — isolation, roles and permissions modelled before features are added
- Authentication and accounts — sign-up, invitations, teams, SSO where it is needed
- Billing — plans, trials, upgrades, proration and the entitlement rules that follow them
- Onboarding — the first-run path that decides whether a trial converts
- Admin surface — the internal tooling you need to support customers without a database client
- Product analytics — events that show activation, usage and churn rather than page views
How we approach it
Phase one is a written architecture: tenancy model, data model, integration map, and the list of decisions that would be expensive to reverse. It is short, but skipping it is what causes rewrites.
Then the smallest complete product: one workflow, done properly, with the account and billing machinery around it. It ships to real users, and what they do decides the next phase.
Technologies
Next.js and React, Node.js APIs, PostgreSQL with Prisma, Stripe for billing, queues and scheduled jobs where work has to happen off the request path, and deployment on Vercel or AWS. Observability from day one, because a product you cannot debug in production is a liability.
What you get
A deployed product, a repository you own, documented environment and deployment, an admin interface, billing that reconciles, analytics on the events that matter, and a phase plan for what comes next.
Who this is for
Founders taking a product from idea to first paying customers, service businesses productising something they already do manually, and existing SaaS teams that need a module built alongside their own roadmap.
Related services
The engineering underneath is the same as any custom software build; the marketing site in front of it is web development; and if the product has a model in the loop, see AI development.
Frequently asked questions
- What should a first version include?
- The one workflow that makes the product worth paying for, plus the machinery around it: sign-up, authentication, tenancy, billing and a way for you to administer accounts. Everything else is a later phase.
- How do you handle billing and subscriptions?
- Stripe, in almost every case, with plans and entitlements modelled in your own database so access rules never depend on parsing a webhook at the moment a user clicks. Trials, upgrades, downgrades and failed payments are designed up front — they are where most implementations leak.
- Can we start small and scale later?
- Yes, and the decisions that make that possible are made at the start: tenancy model, data isolation, background jobs and where state lives. Those are expensive to reverse, which is why they get a design phase rather than a default.
What is included
- Multi-tenant architecture and permissions
- Authentication, billing and subscriptions
- Onboarding and in-product analytics
- MVP scoped to ship, then extended
Tell us what you are building.
Send us the problem — an idea, an existing product, a site that is not performing. We will tell you what is worth building, what is worth fixing, and what it costs, before anyone signs anything.