SaaS Development — Multi-tenant Platforms Built to Scale

You have a SaaS idea (or an MVP that needs to grow up). What you don't have is the engineering team to ship multi-tenancy, billing, auth, admin tooling, and observability the right way the first time. We build production-grade SaaS platforms for founders and CTOs in the US, UK, and Europe — full-stack engagements, fixed scope, weekly demos, 80%+ test coverage.

The problem we kill

Most SaaS builds fail in the same places — workspace isolation done wrong, billing edge cases ignored, admin tooling never built, no auth audit log, no E2E tests, no observability. Six months in, the product can't be debugged, can't be supported, can't be sold to enterprise. We build to skip those traps from day one.

What we build into every SaaS

Multi-tenant architecture

Workspace isolation, row-level security, tenant-scoped admin tooling. Built for the day your biggest customer asks for SSO and an audit log.

Stripe billing and subscriptions

Plans, seats, metered usage, trials, dunning, proration, tax. Webhooks wired end-to-end with idempotency and replay. Tested against Stripe's test clocks.

Auth done properly

Email and password, magic links, OAuth, SAML / SSO, RBAC, audit logs. SOC2-ready. Optional WorkOS or Clerk integration where it makes sense.

Admin tooling and support tools

Internal dashboards for support and ops — impersonation, refunds, usage reports, user search, tenant settings. The thing nobody builds until the support team is drowning.

Production infra and observability

Deployed on Vercel, AWS, or Fly. CI/CD via GitHub Actions. Error tracking (Sentry), structured logging, OpenTelemetry tracing, uptime monitoring.

80%+ test coverage

Unit, integration, and E2E (Playwright). Code review on every PR. Not optional — the difference between shipping fast at month six and being stuck in regression hell.

Tech stack

Next.js, React, TypeScript, Node.js, PostgreSQL or MongoDB, Stripe, Vercel or AWS. We pick the stack that fits your team's long-term hire-ability — not the trendiest framework. Optional Inngest / Trigger.dev for background jobs, Upstash Redis for caching and rate limiting.

Industries we serve

B2B SaaS, vertical SaaS (legal, healthcare, real estate, logistics, hospitality), fintech with proper compliance considerations, marketplaces, and developer tools. Founders in the US (EST / PST), UK, Germany, France, Netherlands, Ireland, Sweden.

How we engage

Discovery sprint (2 weeks) — we pin down scope, write a tech spec, and give you a fixed-price proposal. Build phase (6–14 weeks typical) — weekly demos, GitHub access from day one, async-first comms in your timezone. Launch and handover — production deploy, documentation, optional ongoing support.

Frequently asked questions

How much does it cost to build a SaaS?

Depends on scope — multi-tenancy, billing complexity, integrations, and SSO requirements all move the number. We give a fixed proposal after the 2-week discovery sprint so you're not signing a blank check.

How long does it take?

MVP: 8–10 weeks. Mature platform with billing, auth, admin tooling: 12–16 weeks. We don't do open-ended retainers.

Do you work with US, UK, and European founders?

Yes — most of our clients are in those regions. We work async-first with daily standups overlapping your timezone (EST / PST or GMT / CET).

Can you take over an existing SaaS codebase?

Yes — we do takeovers and rescues regularly. Codebase audit first, then a roadmap to stabilise and ship.

Do you sign NDAs?

Yes. Send yours, or we'll send ours during the discovery call.