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English
$
USD
I will build secure multi tenant saas backend, rest API, sso and application security
Rohn
About this gig
Ready to launch your SaaS, but still unsure who can access what?
Give every customer a separate workspace and your team a backend they can build on. I develop multi tenant SaaS backends, REST APIs and SSO integration around your product's actual users and rules.
Your business gets:
- Login and role permissions that control access.
- Tenant isolation checks to protect customer boundaries.
- Documented API routes your frontend can connect to.
- Input validation and application security checks.
Send your feature list and user roles before ordering. I'll help you choose the package that covers your next milestone.
Every package includes source code, tests for the agreed access rules and setup notes. Higher tiers add business SSO, integrations and deployment, so you pay for the work your launch needs.
You receive clear updates and a handover another developer can follow. Frontend design and additional modules can be scoped separately.
Message me with your SaaS idea, existing stack and launch goal. Let's define a backend your next release can depend on.
Get to know Rohn
Rohn
SaaS backends and AI integrations that turn your ideas into useful systems
- FromUnited States
- Member sinceSep 2026
- Avg. response time1 hour
Languages
English, Spanish, French, German, Italian
Turn your product idea or repetitive business task into software your team can use and maintain. I build SaaS backends, REST APIs and AI integrations that connect your tools, control user access and reduce manual work. You get a clear scope, practical tests, documented source code and updates you can understand. From separate customer workspaces to assistants that answer from your documents, the focus is your next useful milestone. Send your goals and existing setup so we can define the right starting point.
FAQ
Will customers be able to see another company's data
Access is scoped to the signed-in organization. I test attempts to read or change another organization's records, including the agreed API routes. Your handover includes those tests so future changes can be checked.
Can you add this backend to a SaaS I already have?
Send your stack, database schema and the missing features. I review whether the current structure supports tenant isolation. Changes to existing data or architecture are quoted before ordering; the listed packages assume a clean, agreed starting point.
Which single sign-on setup is included?
Standard and Premium include one OpenID Connect provider, such as Auth0, Okta or Microsoft Entra ID, using your configured account. Multiple providers, SAML, SCIM and complex enterprise policies need a separate scope.
Does application security include a full penetration test?
Packages cover the agreed backend's access checks, input validation, password handling, dependency review and tenant isolation tests. A comprehensive penetration test, compliance certification or formal security audit is a separate engagement.
Can my team maintain the code after delivery?
Yes. You receive the project source, API documentation and setup instructions. Custom code is delivered to your repository; third-party libraries retain their own licenses. Revisions refine the agreed deliverables, while new features require a new scope.
