Rorix Technologies is a B2B SaaS development company built for funded B2B product companies with 10 to 200 employees. We take on custom B2B SaaS development end to end: multi-tenant architecture, subscription billing, CRM integrations, and API-first backends, for clients in the US, UK, Canada, Australia, and New Zealand. Our engineers have been a B2B sales-intelligence SaaS company’s engineering partner for five-plus years, since before Rorix was founded, through two full framework migrations without a single rewrite. You own every line of code.
✓ Multi-tenant from day one · ✓ API-first architecture · ✓ You own the code, always · See the SaaS case study → · See the platforms we have shipped and scaled →
Rorix Technologies is a B2B SaaS development company for funded B2B product companies with 10 to 200 employees. We build multi-tenant SaaS platforms with subscription billing, CRM integrations, and API-first backends, from validated MVP to platform at scale. Our engineers have partnered with the same B2B SaaS client for over five years, and you own 100% of the source code.
Last reviewed . Every figure on this page checked against our delivered-project records.
The decisions made in the first sprint (tenancy model, auth, billing, API design) determine whether you scale or rewrite. Most agencies don’t tell you this until month six.
Single-tenant databases that can't scale to 50 customers. No row-level isolation. Auth bolted on after the fact. Rebuilding core architecture mid-flight costs more than building it right from the start.
Most SaaS builds take 12 to 18 months to reach a paying customer. By then the market has shifted, the investor patience has worn thin, and the team has burned through the budget.
Stripe is not billing. Seat-based pricing, usage metering, trial logic, plan upgrades, proration, and invoice generation all need to be built, and they interact with each other in surprising ways.
Every B2B SaaS prospect asks about Salesforce and HubSpot sync on the first demo. Building it as an afterthought means months of rework and a fragile connector that breaks on every CRM API update.
Customers want webhooks, API keys, and data export on day one. Building a public API after a UI-first codebase means exposing internals that were never designed to be public contracts.
An agency ships v1 then leaves. The next team rewrites the parts they don't understand. Context evaporates. Our longest-running SaaS client has had the same engineers for five-plus years for a reason.
From the database schema to the Stripe webhook: built right from the start, not retrofitted later.
Bands derive from our published build bands. A scoping call turns them into a written estimate for your product.
| Scope | What is included | Team | Timeline | Budget band |
|---|---|---|---|---|
| Scoping call and written estimate | 30-minute call, requirements review, written estimate against the bands below, implementation roadmap | Technical lead | Within 1 week | Free, no commitment |
| Validated MVP | Single-tenant or simple multi-tenant app, auth, billing via Stripe or similar, core workflow, admin, deploy pipeline handoff | 1–3 developers | 6–10 weeks | $10,000 to $25,000 |
| Multi-tenant B2B SaaS platform | Tenant isolation, subscription billing, role-based access, CRM or accounting integrations, audit logs, onboarding | 3–5 developers | 3–5 months | $25,000 to $75,000 |
| Platform at scale | Everything above plus white-label, marketplace or partner APIs, advanced analytics, SSO, compliance groundwork | 5–10 developers | 6–12+ months | $75,000 to $250,000 |
Bands derive from the published build bands on our pricing page and are reviewed with every pricing change. Compliance groundwork means audit logs, access controls, and data-retention design; we do not certify against any standard. A scoping call produces a written estimate.
Named engineers, two-week sprints, a monthly retainer, and your code in your organization from day one.
Before you sign, you meet the specific engineers on your account. The same names in every sprint, every standup, every pull request review. No rotating pool and no account manager in the middle.
Sprints planned together on Monday and demoed on Friday. You set priorities, we scope, build, and deliver. Mid-sprint blockers surface in your Slack or Linear, not at the next standup.
We review your current system, or design it from scratch, before writing a line of code. Multi-tenancy model, billing integration, API design, and auth strategy are agreed upfront rather than discovered mid-project.
A fixed monthly fee for a defined team capacity. No surprise invoices. Capacity scales up or down at the start of each month, agreed in writing.
Every repository under your GitHub or GitLab organization from day one. No proprietary tooling, no deployment lock-in, and no negotiation at contract end.
Every engagement includes a 30-day handoff: documented architecture decisions, an annotated codebase walkthrough, and transition support for your incoming team.
Most firms that call themselves SaaS specialists have shipped one or two SaaS products inside a broader portfolio. These are the six things worth checking on any shortlist, ours included.
An agency that leaves after go-live is a project shop. Our longest engagement has run since 2018, begun by our founding engineers before Rorix existed and continued under it, because the architecture held up and the team stayed.
We have maintained Angular codebases from v14 through v21 and React applications through concurrent rendering and Server Components, in production, not in tutorials. Ask any shortlisted partner which versions they have actually migrated.
Your engineers are on your account full time. Named people, committed capacity, no rotating pool. The same team that builds sprint one is still on your account in month 18.
Every repository under your GitHub organization. Every line yours. No proprietary tooling, no lock-in, no negotiation required. Written into every contract.
We agree the tenancy model, data isolation strategy, and auth architecture before any code is written. Getting these wrong costs 6 to 18 months to unpick. Getting them right costs one discovery session.
Every client who has reviewed us on Clutch has rated us 5.0. Four verified reviews is a small sample and we would rather say so than round it up, because the number only means anything if the way we count it holds up.
Long-term engagements, not one-and-done deliveries.
Core engineering partner for a B2B data intelligence platform. Built the full product: on-demand verification pipeline, advanced filter builder, Salesforce and HubSpot sync with full activity logging, real-time Signals feature, Chrome extension, and a complete migration from Angular 14 to Angular 21.
Built a white-label SaaS platform for a home services technology company. 40+ vendor integrations (HubSpot, Twilio, RingCentral, Google APIs), iOS and Android from a single React Native codebase, real-time data flowing from all major home service tools into one unified dashboard.
The same playbook behind our five-year SaaS partnership, scaled to your stage and velocity.
We design your multi-tenancy model, data isolation strategy, API contract, and integration points before the first sprint. Getting this right upfront is the difference between a platform that scales and one that needs a rewrite at customer 50.
Core auth, tenant provisioning, one pricing plan, the primary use case, and the integrations your target customer will ask about in the first demo. Working software, not a prototype. Stripe wired. Not a skeleton.
Two-week sprints. You set the priorities. We ship. The same engineers who built your core stay on to extend it: they know why every decision was made and what the edge cases are.
Our longest-running SaaS client's product has evolved dramatically over five years. The Rorix engineers who built the original filter builder are still maintaining and extending the platform today. That's the model we offer.
We pick what fits your scale and your team, not what’s fashionable this quarter.
Straight answers on timeline, cost, architecture, billing, integrations, and code ownership.
Everything on this topic that lives elsewhere on the site.
Three full platform redesigns, 100% frontend ownership
White-label platform case studyWhat stood out most was the consistent quality of their work and their balance of professionalism and approachability. The team was reliable, communicative, and genuinely invested in the success of our projects, which made the collaboration both productive and enjoyable.
Bring your concept, your wireframes, or your existing codebase. We’ll walk you through the architecture decisions that matter most at your stage (multi-tenancy, billing, integrations) and give you a written estimate with a real timeline.
Free 30-minute call. Architecture recommendations and MVP scope included. No commitment required. Want the proof first? Read the SaaS case study.