Custom SaaS Product Development
Multi-tenant architectures, billing, auth, real-time systems — the plumbing that lets a product scale to millions.
What we build
The load-bearing parts of a SaaS product, engineered right the first time.
Multi-tenant architecture
Tenant isolation that holds up under real usage, not just the demo.
Billing & subscriptions
Metered usage, seat-based plans, upgrades and downgrades that reconcile correctly.
Auth & authorization
SSO, role-based access, and permission models that don't become a security incident.
Real-time systems
Live updates, presence, and collaborative features built on solid transport foundations.
API design
REST or GraphQL APIs designed for the integrations your customers will actually build.
Admin dashboards
Internal tools for support and ops — the unglamorous surface that keeps a SaaS running.
How we work
Three or four ways teams typically bring us in.
Greenfield build
A new product, first version. We design the multi-tenant architecture and billing model before the first feature ships.
Re-architecture
A product that's outgrown its foundations — migrating off a monolith, fixing tenant isolation, or replacing bolted-on billing.
Scaling audit
Before a funding round or a big customer, a focused review of what breaks first and what to fix now versus later.
Embedded team
Ongoing engineering capacity that plugs into your existing team and roadmap, not a vendor you brief once.
What custom SaaS engineering actually covers
Most SaaS products don't fail because of a bad idea — they fail because the underlying architecture couldn't keep up. We build the boring, load-bearing parts right the first time: tenant isolation that doesn't leak, billing that reconciles correctly, auth that doesn't become a security incident.
Whether you're validating an MVP or re-architecting a product that's outgrown its foundations, we work as an embedded engineering team — not a vendor you brief once and wait on.
Common SaaS architecture mistakes we fix
The same handful of mistakes show up across most SaaS products we're brought in to fix: a shared schema with no real row-level isolation between tenants, billing logic that drifts out of sync with what the payment processor actually charged, microservices split up before there was any load to justify them, and auth bolted on late as an afterthought instead of designed in from the start. Each one is cheap to avoid early and expensive to unwind later.
Common questions
Everything you need to know about our approach, architecture, and deployment.
Have a different question?
Reach out to our engineering team directly — we usually reply within a few hours.
Speak with an engineer