Multi-tenant products
From first architecture to paying customers.
Multi-tenant products built with the parts founders underestimate: billing, onboarding, permissions, admin tooling, and the APIs and integrations that connect them to everything else.
A SaaS product is a company, not a feature. The visible interface is a fraction of the system: tenancy, billing, roles, audit trails, usage limits, and the internal tools your team uses to support customers.
We have built these foundations enough times to know what has to be right at the start and what can wait. The goal is a product that scales past its first hundred customers without a rewrite.
Products rarely live alone, so integration is part of the build: payment providers, ERPs, CRMs, couriers and messaging connected with retries, monitoring and clear failure handling, and public APIs that partners can build against with confidence.
How it runs
A typical SaaS build
The sequence that gets a product to its first customers on a foundation that lasts.
- 01
Define the wedge
The one workflow the product must do better than anything else. Everything else waits.
- 02
Foundation sprint
Tenancy, auth, billing scaffolding, and deployment, before any feature work.
- 03
Build the core loop
The wedge feature, end to end, reviewed with design partners.
- 04
Onboarding and admin
The path from sign-up to value, and the tools to support it.
- 05
Launch and iterate
First customers, real usage data, and a weekly release rhythm.
What is included
Every engagement covers the whole job.
Product architecture
Tenancy model, data isolation, and the boundaries that keep customers' data apart.
Authentication and permissions
Sign-in, teams, roles, and invitations that behave the way customers expect.
Billing and plans
Subscriptions, trials, upgrades, and invoices, integrated with Stripe or your provider of choice.
Onboarding
The first session, designed so a new customer reaches value without a call.
Admin and support tooling
Impersonation, usage views, and the controls your team needs to help customers.
Observability
Logging, error tracking, and metrics from the first deploy.
API and integrations
Payments, accounting, CRM, ERP, courier and messaging APIs connected, so information moves without a person in the middle.
Public and partner APIs
Versioned, documented, rate-limited and secured APIs for the people who build on you.
Webhooks and queues
Retries, idempotency and dead-letter queues, so nothing is lost when another system is down.
Approach
How we build SaaS
Boring, proven infrastructure under a product that can move fast. Feature flags from day one, a staging environment that mirrors production, and a release process that lets you ship several times a week safely. Every integration is treated as unreliable by design: idempotent operations, retries with backoff, and dashboards that show what is stuck.
- Next.js
- TypeScript
- PostgreSQL
- Prisma
- Stripe
- Auth.js
- OpenAPI
- Webhooks
- BullMQ
- AWS
Questions
Things clients ask before they start.
We have a prototype already. Can you build on it?
Usually. We will review it honestly and tell you what can be kept and what should be rebuilt before it becomes expensive.
How do you handle billing?
Stripe by default, with plans, trials, proration, and invoicing handled properly. Other providers where a region requires it.
What about security and data protection?
Tenant isolation at the data layer, encrypted secrets, audit logs, and least-privilege access are part of the foundation, not add-ons.
Can you work alongside our in-house team?
Yes. Many SaaS engagements are a mix of Globex engineers and the client's own team, working in one repository with one review process.
Can you integrate with a system that has no API?
Often, through exports, scheduled files, or database access. We will tell you what is possible and what the trade-offs are.
Do you build APIs for our partners to use?
Yes, including authentication, rate limiting, versioning, and documentation good enough that partners rarely need to ask questions.
Related
Usually built alongside.
- Learn more
Web development
Fast, accessible, maintainable web platforms and online stores. The thing Globex is best known for.
- Learn more
Custom software
Software shaped to how a business actually operates, including the dashboards and internal tools a team lives in all day.
- Learn more
Mobile apps
iOS and Android apps, native or cross-platform depending on what the product needs.
Have something in mind?
Websites, apps, and digital products engineered around your ambition.