From MVP to multi-tenant SaaS — built to scale.
Product foundations: tenancy, subscriptions, invoicing, team management, admin consoles, and internal tooling — engineered for growth and maintainability.
SaaS is a long-term architecture problem — billing, tenancy, permissions, and observability from day one.
What we treat as first-class.
The boring pillars that separate a demo from a business.
Tenant & data isolation
Row-level strategies, schema patterns, or dedicated databases — matched to your threat model and compliance needs.
Billing & entitlements
Plans, trials, tax hooks, dunning, and usage meters wired without trapping finance in manual spreadsheets.
Identity & organisations
Invites, SSO readiness, org switching, and least-privilege roles for admins vs members.
Product analytics
Event pipelines that respect privacy defaults and still answer growth questions.
Reliability
Background workers, retries, dead-letter queues, and alerts that wake the right people.
Developer experience
Seeding, fixtures, and docs so your future hires ship features instead of fighting the repo.
Where SaaS engineering shows ROI.
Prove traction without painting yourself into a corner.
We ship a tight MVP with upgrade paths for tenancy and billing — so you are not rewriting at the first enterprise deal.
Outcomes
- Investor-ready architecture
- Faster iteration cycles
- Lower rewrite risk
Unblock enterprise requirements.
SOC-minded logging, export tools, granular permissions, and integration endpoints procurement expects.
Outcomes
- Shorter security reviews
- Cleaner expansion revenue
- Fewer “special” branches
Productise your own operations.
Turn a critical internal workflow into a managed product with SLAs, versioning, and controlled rollouts.
Outcomes
- Measured adoption
- Centralised improvements
- Lower shadow IT
SaaS patterns we know deeply.
Vertical differences change copy — not the engineering fundamentals.
Ticketing & approvals
State machines, notifications, and audit trails that survive real offices.
Money-adjacent flows
Idempotent payments, reconciliation views, and clear operator overrides.
Usage-based billing
Metering pipelines that align engineering events with finance recognition.
Global rollouts
Locales, currencies, and deployment regions planned early — not bolted on.
Proven primitives — composed for your product.
We avoid novelty for its own sake; we choose what your team can operate for years.
Core
- TypeScript
- Next.js / React
- PostgreSQL
- Redis
Billing
- Stripe & webhooks
- Entitlements service
- Invoice exports
- Tax hooks
Platform
- Background jobs
- Feature flags
- Structured logs
- Metrics
Cloud
- Multi-region options
- IaC-ready setups
- Secrets & keys rotation
- Backups
How SaaS programmes run with GXN.
Product & risk workshop
Personas, tenant model, billing assumptions, and compliance flags — captured as decisions, not vibes.
Vertical slice
One complete customer journey end-to-end to validate architecture and UX risk early.
Broaden & harden
Feature expansion with performance tests, abuse scenarios, and operational dashboards.
Launch & learn
Progressive rollout, on-call readiness, and feedback loops into the next roadmap slice.
Investment anchors for SaaS builds.
Exact figures follow a technical scope — this is guidance, not a quote.
MVP foundation
From EUR 12,000
Auth, core entities, primary user journey, admin basics, and production deploy.
- Tenancy sketch
- Stripe test mode → live plan
- Admin CRUD
- CI/CD
- 4–8 week slice
Growth SaaS
From EUR 35,000
Billing maturity, roles, analytics events, integrations, and reliability work for paying customers.
- Entitlements
- Background workers
- Observability
- Security pass
- Multi-sprint programme
Scale & compliance
Custom
Hardening for enterprise procurement, data residency, or complex migration from legacy SaaS.
- Dedicated team option
- SLA
- Runbooks
- Migration tooling
Ongoing product development available on retainer after launch.
Weitere Practices im Studio
SaaS delivery — direct answers.
Do you white-label SaaS for agencies?
We partner with product owners. If you need a rebrandable platform, we can architect for it — but we do not sell generic reseller kits.
Can you inherit an existing codebase?
Yes, after a focused technical audit with a rewrite vs stabilise recommendation — honest trade-offs, not automatic rewrites.
How do you handle subscriptions?
We integrate billing providers and model entitlements in the app layer so product rules stay testable.
What about mobile apps?
When stores or offline use demand it, we ship alongside the web product with shared contracts and auth.
Ready to engineer your SaaS like a serious product?
Share your stage, tenant model, and billing assumptions — we respond with risks, milestones, and a sane first slice.
We reply within one business day.