12 AM Labs.
Startups

SaaS Development

Build scalable SaaS products from architecture to production.

TimelineTypically 10–20 weeks for v1, then continuous
Typical stackNext.js · NestJS · PostgreSQL · Redis · Stripe · Docker · AWS
Built forStartups
reference architecture
EXPERIENCEWebMobileAdminAPPLICATIONDomain servicesWorkflow enginePublic APIDATAPostgreSQLCacheObject storePLATFORMCI/CDObservabilityInfrastructure as code
FIG. 01SaaS Development — representative interface
The situation

SaaS is not a web app with a payment page. It is tenancy, roles, billing, limits, onboarding and observability — decisions that are cheap now and expensive later. We build products that get those right the first time.

Does this sound familiar?

  • You are building a product that multiple organizations will use.
  • You need subscriptions, plans, trials and usage limits.
  • You are worried about isolating customer data correctly.
  • You want to add enterprise customers without rebuilding.
What gets built

The system, module by module

01

Multi-tenant architecture and data isolation strategy

02

Authentication, SSO readiness, roles and granular permissions

03

Subscription billing, plans, trials, metering and invoicing

04

Self-serve onboarding and in-product activation

05

Public and partner APIs with versioning

06

Observability: logging, tracing, metrics and alerting

07

Background processing, queues and scheduled work

What changes for the business
  • A product that can add a customer without engineering involvement
  • Billing that reflects actual usage without manual reconciliation
  • An architecture that survives your first large customer's security review
What you receive
  • Architecture document and data model
  • Production SaaS application
  • Billing and admin operations tooling
  • Monitoring, alerting and runbooks
Delivered the same way every timeUnderstand · Define · Design · Build · Launch · Grow
Often built alongside this
Start here

Have a problem worth solving?

Let's build the right technology for it.