Case study · SaaS · Product engineering
Custom SaaS & Workflow Platforms
Purpose-built multi-tenant applications designed around customer-specific processes.
tenant dashboard · acme-recruitment
Tenants
128
Interviews
4,310
MRR
$48k
Context
Two multi-tenant SaaS products engineered and operated by YS Infomatics: an AI-assisted recruitment platform and a technical learning platform.
01
The challenge
- Strict tenant isolation for sensitive candidate and customer data.
- AI features (automated spoken interviews, an AI tutor) that had to be reliable and cost-controlled in production.
- Subscription billing, seat limits and accounting-ledger sync (Xero, MYOB, QuickBooks) that finance teams could trust.
02
Our approach
- Multi-tenant architecture with tenant-scoped data access and encrypted sensitive fields.
- Full-stack build — Next.js front ends with Fastify / Spring Boot APIs on PostgreSQL — deployed on managed cloud platforms.
- Stripe subscriptions with entitlement enforcement, plus integrations to external ledgers and storage.
03
The outcome
- Production SaaS platforms live and operated with monitoring, CI and automated tests.
- Reusable foundation (auth, billing, tenancy, AI integration) that shortens every subsequent custom build.
- Evidence that a focused team can deliver a full product in months.
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