Your SaaS product isn't feature-limited. It's architecture-limited. Fix the foundation.
We build and rebuild web applications for SaaS startups — multi-tenant architecture, onboarding flows, billing integration, admin panels, and the product infrastructure that lets you sell to enterprise without breaking what SMBs love. Fixed scope, fixed price.
Your SaaS works for small accounts. The architecture assumptions you made at day one — single-tenant, flat permissions, shared billing — are blocking deals with enterprise buyers who need data isolation, SSO, and role-based access.
Most SaaS companies ship their first version with a set of architectural shortcuts that make sense at the time and become expensive later. The most common: a single database schema not designed for tenant isolation, a flat user model with no concept of roles or organisations, a billing layer that's one Stripe product wired to one plan, and a session model that doesn't support SAML or SSO.
Those shortcuts get you from zero to $50k MRR. They block the deal from $200k ARR to $2M ARR.
The enterprise buyer wants a separate environment for their data. Your schema doesn't support it. They want SSO through Okta. You haven't implemented SAML. Their IT team wants to provision and deprovision users via SCIM. You've never heard of SCIM. Their legal team wants a DPA and a data residency option. Your infrastructure is US-only.
Meanwhile your product manager wants to ship usage-based billing and a free tier. Your billing layer is one Stripe subscription wired to one price. Changing it is a two-sprint project that touches every invoice in the database.
This is the architectural debt trap. It doesn't announce itself. It shows up as deals that stall in procurement, features that take four times as long as they should to build, and an engineering team that's scared to change anything because everything is connected in ways nobody fully understands.
A SaaS application built on architecture that scales from solo to enterprise — multi-tenant, properly permissioned, with billing that handles the plans your sales team is actually selling.
Multi-tenant data model with proper isolation
Per-organisation database schemas or row-level security policies, migration tooling to move existing accounts into the new model, and a data access layer that makes tenant isolation automatic rather than manually enforced per query.
Role-based access with custom role builder
Organisation, workspace, and user scopes with composable permissions — admin, member, viewer, billing-only, read-only — and an admin UI to manage them without touching code.
SSO, SCIM, and enterprise auth
SAML and OIDC for Okta, Entra, and Google Workspace via WorkOS or Auth0. SCIM provisioning for IT teams that need automated user lifecycle management.
Billing infrastructure for every plan type
Stripe with per-seat, usage-based, tiered, and hybrid billing models. Upgrade and downgrade flows, trial-to-paid conversion, and invoice history accessible in the admin panel and customer-facing.
Admin and ops panels
Tenant management, impersonation with audit logging, feature flags, plan overrides, usage monitoring, and the tools your success team needs without filing engineering tickets. Built on Next.js, Convex or Postgres, WorkOS or Clerk for auth, Stripe for billing, and deployed on a multi-region architecture when data residency is in scope.
One honest number to start.
Fixed-scope, fixed-price. The number below is the starting point — final scope is built from your brief.
A SaaS application built on architecture that scales from solo to enterprise — multi-tenant, properly permissioned, with billing that handles the plans your sales team is actually selling.
Three steps, every time.
The same repeatable engagement on every project. No surprises, no mystery, no billable ambiguity.
Brief & discovery.
We send you questions, then get on a call. Output: a written scope with every step, feature, and integration listed.
Build & ship.
Fixed schedule, weekly reviews. No scope creep unless you change the scope — and if you do, we reprice it transparently.
Warranty & retainer.
30-day warranty on every launch. Most clients stay on a monthly retainer for ongoing features and maintenance.
Why Fixed-Price Matters Here
SaaS founders are managing MRR growth, churn, runway, and a roadmap simultaneously. A months-long, open-scope architecture rebuild is an existential risk. We scope the multi-tenant migration, the role model, the SSO integration, and the billing layer precisely — quote it firm, and ship it on the timeline your next enterprise deal requires.
Related engagements.
Questions, answered.
We run a shadow-schema migration: all new accounts land in the new structure while existing accounts migrate in batches during off-peak hours with backward-compatible reads. Rollback is available at every batch. Zero downtime, no emergency Slack at 2am.
Multi-tenant migration, role model, SSO, and billing rebuild typically runs 10 to 14 weeks. The timeline depends heavily on the size of your existing data model and how many billing configurations you need to support.
Yes. We run the architecture work as a parallel branch and integrate it feature-flag gated, so your product team keeps shipping without waiting on the infrastructure. We plan the integration and cutover with minimal disruption.
Multi-tenant, roles, SSO, billing, and admin panel typically runs $40k–$90k. Greenfield SaaS builds with the right architecture from day one scope similarly. Every engagement is fixed-price.
One developer, fully accountable. Not a team where responsibility is diffuse and communication overhead eats output. One person who knows the full architecture, can make decisions quickly, and ships.
Tell Ryel about your project.
Describe what you’re building and what outcome you need. You’ll have a written, fixed-price scope within the week.