MANMobile engineer All projects

Finland · Ticket scanning

Eventual Tickets

A production ticket-scanning app evolved across multiple Expo generations, with reliable feedback, offline storage, and event workflows.

Eventual Tickets product screen
RoleFeature engineer, maintainer & later sole mobile developer
Timeline2021 — present
FocusExpo / EAS · Offline · Native

Selected product screens · Production work

These screens follow the venue workflow from sign-in and event selection through live QR scanning, manual lookup, ticket redemption, and guest passes.

Eventual Tickets branded launch screen with the distinctive stacked Eventual wordmark
Launch · Eventual identity
Eventual Tickets sign-in screen with email, password, and account recovery actions
Sign in · Venue access
Eventual Tickets event selection screen showing upcoming Helsinki concerts and venue details
Events · Select a venue
Eventual Tickets live camera scanner focused on a concert admission QR code
Scanner · Live QR capture
Eventual Tickets manual QR lookup dialog for entering the first six ticket-code digits
Scanner · Manual code entry
Eventual Tickets digital admission ticket for DARE DISCO at Kaiku in Helsinki
Tickets · Admission & redemption
Eventual Tickets guest pass with a scannable QR code and a directory of events and venues
Guest pass · Events & venues

Case notes

Product judgment backed by hands-on engineering.

01 / Challenge

What needed to change

Venue staff need fast, unambiguous scanning under pressure, while a long-lived app must keep pace with changing platform and Expo requirements.

02 / Approach

How I worked

  • Built Guest Pass, scanner audio and haptics, press-and-hold redemption, used-ticket counts, and event UX improvements.
  • Migrated offline storage from a local Mongo implementation to AsyncStorage and introduced explicit connectivity handling.
  • Led Expo upgrades from SDK 49 through 53 and maintained EAS profiles and release readiness.
03 / Outcome

The result

A clearer scanning workflow, a simpler storage layer, and a maintainable app that continues to ship across iOS and Android.

Tools & platform
React NativeExpo 53TypeScriptRedux ToolkitNetInfoSecureStoreEAS
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