A US SaaS development company that ships platforms you own.
Kadmoon is a SaaS development company based in Austin, Texas. We build multi-tenant SaaS platforms with the parts that actually make them work: tenancy, authentication, billing and subscriptions, role-based access, analytics, and public APIs. Every engineer is on our permanent in-house team, every feature ships with measurable acceptance criteria, and you own the code, infrastructure, and documentation on delivery.
What a SaaS development company builds
A SaaS development company builds multi-tenant software delivered over the web, where many customers share one secure codebase while their data stays isolated. The work goes well beyond features: tenancy and data isolation, authentication and role-based access, billing and subscriptions, usage analytics, admin tooling, and public APIs. The output is a platform that can onboard customers, meter usage, and scale, and one you own.
The parts that make or break a SaaS product
- Tenancy model. How you isolate customer data shapes security, scaling, and pricing for the life of the product. Decide it early.
- Billing and subscriptions. Plans, trials, proration, and dunning are where SaaS revenue leaks if they are bolted on late.
- Auth and permissions. Role-based access, SSO, and audit logs are table stakes for selling to businesses.
- Analytics and APIs. Customers expect to see their usage and to integrate with their own stack.
We cover the details in our guides to multi-tenant SaaS architecture, SaaS billing and subscriptions, and how to build a SaaS application.
Start with an MVP, then scale
The most common way SaaS budgets get wasted is building the full platform before real users validate the core workflow. We ship a focused MVP that proves the workflow with real customers, then expand in phases based on how people actually behave. See our take on B2B SaaS MVP development and scaling a SaaS platform.
Why Kadmoon
Kadmoon runs on a senior in-house team with two-week sprints and a working demo each cycle, on a modern stack (React, Next.js, Node.js, Python, PostgreSQL, Kubernetes, Terraform). We are a software house and custom software development company that builds across ten-plus industries. Explore the capabilities we deliver, or read the blog for practical, data-backed guides.
SaaS development: frequently asked questions
What does a SaaS development company do?
A SaaS development company builds multi-tenant software delivered over the web, where many customers share one secure codebase and their data stays isolated. Beyond the core features, that means designing tenancy, authentication, billing and subscriptions, role-based access, analytics, and public APIs so the product can onboard customers and scale. Kadmoon builds each of these as a system you own, not a template you rent.
How much does it cost to build a SaaS product?
A focused first version of a B2B SaaS with core workflows, auth, and billing typically starts in the low-to-mid six figures, depending on how many features and integrations ship at launch. Cost scales with tenancy model, compliance needs, and how much of the platform you build before your first paying customers. A fixed scope with acceptance criteria keeps the price mapped to verifiable deliverables.
What is multi-tenant SaaS architecture?
Multi-tenant architecture serves many customers from one application while keeping each tenant's data logically or physically separated. It lowers cost per customer and makes updates ship to everyone at once, but it demands careful design of data isolation, per-tenant configuration, and noisy-neighbor limits. The tenancy model you pick early shapes security, scaling, and pricing for the life of the product.
Should I build an MVP or a full SaaS platform first?
Start with a focused MVP that proves the core workflow with real users, then expand in phases. Building the full platform before validation is the most common way SaaS budgets get spent on features nobody uses. A good development partner ships a usable version early and grows it based on how customers actually behave.
Do I own the SaaS platform and its code?
You should. With Kadmoon you receive the Git repository, CI/CD pipelines, infrastructure, and credentials on delivery, with no lock-in. Confirm IP ownership and handover terms in the contract before work begins, since some vendors keep the code or license it back to you.
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