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Authentication & Permissions
A tested starting point for authentication & permissions reduced repeated setup work.
We redesigned a SaaS company's subscription and billing workflows into focused services for plans, payments, invoices, entitlements, and notifications so revenue-critical processes were easier to manage and recover when something failed.
Trusted by teams building ambitious products
A growing SaaS product with increasingly complex subscription, payment, invoice, entitlement, and account-access workflows.
Coretus worked across product planning, UX, backend engineering, integrations, testing, deployment, and ongoing improvements.
Make revenue-critical workflows easier to change, monitor, and recover without affecting unrelated product areas.
Focused services for plans, subscriptions, payments, invoices, entitlements, notifications, webhook processing, and day-to-day recovery.
Subscription changes, payments, invoices, account access, and notifications had grown inside the same backend logic.
When one part failed, it could create inconsistent customer access or require manual correction. The company needed clearer separation and better recovery.
Payments and account access shared tightly coupled code.
Revenue responsibilities are separated clearly.
Failed webhooks required investigation and correction.
Retries and event tracking make failures easier to resolve.
Billing changes could affect unrelated account workflows.
Billing services can improve with less impact elsewhere.
Subscriptions, payments, invoices, and access rules are separated by responsibility.
Webhook and billing events are processed with safeguards against duplication and missed updates.
Teams can see failed events, retries, and customer state in one day-to-day view.
Tested foundations helped the team spend less time on setup and more time on the parts that made this product useful.
A tested starting point for authentication & permissions reduced repeated setup work.
Reusable work for workflow & api layer let the team focus more time on the client’s specific needs.
This made it easier to add monitoring & reliability without rebuilding common foundations.
A tested starting point for notifications & status reduced repeated setup work.
A straightforward before-and-after view of what changed for the team and their customers.
Billing events have clearer recovery paths.
Billing logic is easier to change independently.
Teams can understand payment and subscription state faster.
Billing stopped feeling like one large piece of code nobody wanted to touch. The services gave us clearer ownership and much better visibility when something went wrong.