03 / CredPal
Payment integration / Backend APIsA plan becomes a purchase
Connect a purchase with the product it unlocks.
+40% Transaction success rate
Payment APIsData modelingTypeORM
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16 contributionsPROBLEM · CONTRIBUTION · SKILLS · RESULT
03 / CredPal
Webhooks / Event handlingPayment events become product access
Keep access aligned with verified payment information.
+40% Transaction success rate
WebhooksSignature verificationState management
03 / CredPal
Purchase verification / IntegrationAn iOS receipt joins the same access model
Support a consistent membership experience across purchase channels.
Receipt verificationAPI contractsData modeling
03 / CredPal
Access control / SubscriptionsAccess follows the subscription clock
Make membership changes understandable in the product.
+50% Subscriptions in 3 months
NestJSAccess controlScheduled jobs
03 / CredPal
Authentication / Backend APIsOne registration starts several useful actions
Help new users reach a useful first experience.
AuthenticationRedisEvent design
03 / CredPal
Account recovery / ValidationAccount recovery with a limited lifetime
Help users regain access through deliberate verification.
Email integrationRedisAuthentication
03 / CredPal
Notifications / PersistenceA message survives beyond the push
Keep useful messages available after delivery.
SQLFirebase Cloud MessagingState management
03 / CredPal
Device management / MessagingReach active devices and selected audiences
Send relevant messages to the intended audience.
+30% Customer engagement
Firebase Cloud MessagingEvent designError recovery
03 / CredPal
Scheduling / NotificationsThe clock starts the conversation
Help users follow through on their plans.
+30% Customer engagement
Scheduled jobsTime-zone handlingFirebase Cloud Messaging
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