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RankBrain

Custom Software Development

SaaS Products Built to Launch and Keep Growing.

We design and build multi-tenant subscription software for founders and companies turning an idea or internal tool into a product customers pay for.

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Overview

What SaaS Development covers.

SaaS development is the work of building software that many customers use from one shared platform, each with their own account, data and subscription. Beyond the core features, a SaaS product needs sign-up, tenant isolation, roles, billing, onboarding and an admin view of everyone using it.

Rankbrain starts with a focused MVP that proves the core value, built on a foundation that will not need rewriting once customers arrive. We typically work in TypeScript, Next.js, Node.js and PostgreSQL, ship in two-week sprints with working demos, and hand over full source code and account access.

Problems we solve

What this fixes.

  1. 01

    An idea stuck at prototype

    A clickable demo or no-code build has validated interest, but it cannot handle real accounts, payments or growing usage.

  2. 02

    Billing and access bolted on later

    Plans, trials, seats and permissions added as afterthoughts create bugs, revenue leakage and support tickets.

  3. 03

    Architecture that cannot scale

    Shared data without proper tenant separation becomes a security risk and a bottleneck as the customer base grows.

Scope of work

What’s included.

Multi-tenant SaaS products from MVP to scale, with billing, auth and dashboards included.

  • 01

    Product scoping and MVP definition

    We separate must-have features from later releases so the first version ships sooner and tests the right assumptions.

  • 02

    Multi-tenant architecture

    Data models, tenant isolation and role-based permissions designed in from the first sprint.

  • 03

    Authentication and onboarding

    Sign-up, login, team invites, password resets and optional single sign-on, with a guided first-run experience.

  • 04

    Subscription billing

    Plans, trials, usage or seat-based pricing, invoices and payment handling through a provider such as Stripe.

  • 05

    Customer and admin dashboards

    In-app dashboards for your users and an internal admin panel for managing accounts, plans and support.

Benefits

What it can do for your business.

Ideal for

  • Founders building a first SaaS product
  • Companies productizing an internal tool
  • Teams replacing a no-code prototype
  • Existing SaaS needing billing or tenancy rework

  • Faster path to paying customers

    A tightly scoped MVP can help you start charging and learning from real users sooner.

  • A foundation that holds up

    Designing tenancy, billing and permissions early helps avoid costly rewrites as the product grows.

  • Ownership you can build on

    You keep the code and accounts, so your own team or future hires can extend the product.

How we deliver it

A clear, practical process.

  1. 1

    Product Discovery

    Define users, pricing model, core workflows and the smallest version worth launching.

  2. 2

    UX and Architecture

    Prototype key flows and design the tenancy, data and billing structure.

  3. 3

    Sprint Build

    Two-week sprints with demos, testing and feedback on each release.

  4. 4

    Launch and Iterate

    Deploy with monitoring, onboard first customers and plan the next features.

Related services

Works well alongside.

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Questions

SaaS Development questions, answered.

How is SaaS development different from building a web application?

A SaaS product serves many paying customers from one platform, so it also needs tenant isolation, subscription billing, onboarding and account administration that a single-business web app usually does not.

How long does a SaaS MVP take?

It depends on scope, integrations and how quickly decisions are made. After discovery we provide a sprint plan with an estimated timeline for your specific feature set.

Can you take over an existing SaaS codebase?

Yes. We start with a code and architecture review, then recommend whether to extend, refactor or rebuild specific parts before adding features.

Who owns the product?

You do. You receive the full source code, documentation and access to every account and service used to run it.

Ready to talk about SaaS Development?

Tell us about your business and goals, and we’ll recommend a clear, practical plan.

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