Software & Product Development service

SaaS Application Development

One codebase, many tenants, and a billing system that lets people sign up without emailing you.

Scope the platform
SaaS Application Development
12–24 wks
to first paying tenant
99.9%
uptime target at launch
1
codebase across all tenants
0
manual steps to sign up

What makes a product SaaS and not just software?

SaaS means one running system serves every customer, and a new customer costs you nothing but compute. The engineering consequence is that tenancy, billing and permissions stop being features and become the spine of the architecture — every query, every background job and every export has to know which tenant it belongs to.

The two mistakes we’re usually called in to fix are the same ones every time. Either tenancy was bolted on later, so isolation depends on developers remembering a where clause; or billing was treated as a Stripe checkout button, and nobody modelled trials, upgrades mid-cycle, proration, seat changes or failed payments. Both are cheap to design in and expensive to retrofit.

What’s included

What a SaaS platform includes

01

Tenancy model

A deliberate choice between shared schema, schema-per-tenant or database-per-tenant, with the isolation enforced in the data layer rather than by convention.

02

Self-serve onboarding

Signup, email verification, workspace creation, invites and a first-run path that gets someone to value without a call with sales.

03

Plans and entitlements

Feature flags and limits driven by the plan a tenant is on, so pricing changes are configuration rather than a release.

04

Subscription lifecycle

Trials, upgrades, downgrades, proration, seat counts, usage metering, dunning and cancellation — including what happens to data after churn.

05

Admin and support tooling

An internal console so your team can look up a tenant, impersonate safely with an audit trail, and fix a billing state without a database client.

06

Operational baseline

Per-tenant metrics, backups with a tested restore, structured logs and alerting tied to the paths that generate revenue.

How a SaaS build runs

01

Model tenants and pricing

Two to three weeks on the tenancy shape, permission model and how you intend to charge — because pricing decides the data model more than the features do.

02

Build the platform floor

Auth, tenancy, roles, audit logging and billing plumbing first. Unglamorous, and the thing that makes every later feature quick.

03

Ship the core workflow

The one job customers will pay for, built end to end for a real tenant, demoed fortnightly against your own test workspace.

04

Close the money loop

Live signup through to a paid invoice, tested with failed cards, mid-cycle upgrades and refunds before anyone real touches it.

05

Launch, then instrument retention

Onboard first tenants with feature flags for safety, then wire activation and churn signals so product decisions come from data, not opinion.

SaaS Application Development FAQ

Twelve to twenty-four weeks for a genuinely self-serve product, and it’s usually the billing edge cases rather than the core feature that set the date. If you have design partners willing to be invoiced manually, we can often get you revenue in eight.

Isolation is enforced at the data-access layer — every query is scoped by tenant by construction, not by developers remembering. We add automated tests that deliberately try to read across tenants and fail the build if they succeed.

Yes, and we model the subscription state in your own database rather than treating Stripe as the source of truth. Webhooks arrive late, out of order and twice, so entitlements need to be recoverable from your own records.

We can build the technical controls — access logging, encryption, backups, least-privilege infrastructure, change management through CI — which is most of the engineering half. The policy, vendor and audit work needs a compliance partner, and we’ll happily work alongside one.

Early-stage platforms usually sit between $200 and $1,500 a month in infrastructure until you have real load. We size for your first year rather than a hypothetical millionth user, and we’ll flag any architecture choice that has an ugly cost curve.

Tech stack

The tools we build with

Everything here is chosen so a single small team can operate the platform on a Wednesday afternoon without a specialist for each layer.

Product surface

Next.jsReactTypeScriptTailwind

Platform & data

NestJSNode.jsPostgreSQLPrismaRedis

Billing & identity

StripeAuth0KeycloakOAuth 2.0

Run & observe

AWSTerraformKubernetesGrafanaPrometheus
Our work

Related work

All work

Turning your product into a platform?

Tell us how you plan to charge and who counts as a tenant. We’ll come back with an architecture, a scoped build and a date you could take money on.

Scope the platform
Questions about SaaS Application Development?