Multi-tenant web application with strict tenant isolation
Anonymised case study
Due to a non-disclosure agreement, we can't share the client name or project name. What you read here is the description of a real delivered project — anonymised.
Background
We built a B2B SaaS startup delivering a platform to clients in a regulated industry. Each client (tenant) needed strictly isolated data and independent configuration. Onboarding previously took weeks and required developer involvement — which meant the sales team couldn't close deals at the pace the market demanded.
Problem → Solution
Tenant and role boundaries blurred together, and every new tenant onboarding required developer work.
Tenant isolation enforced at the data and API layer, with clean role-based access boundaries.
Approach
We redesigned the platform with a tenant-first approach: every data layer knows the tenant context, every API call validates access, and tenant configuration is self-service through an admin interface. A staged rollout had new customers running in parallel on both systems while we built confidence, then a clean cutover.
Outcome
50+
Active tenants on the platform
5 min
New tenant onboarding (was: weeks)
0
Developer hours per onboarding
New tenant onboarding takes minutes, and the codebase can be extended without risk.
Operations
LIVEOngoing platform operations, tenant onboarding, security patching and continuous support.
Selected work
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Read moreGet in touch
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Best fit: multiple roles or tenants, critical integrations, sensitive data, complex business logic, long-term evolution, or direct business impact when the system is unavailable.
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