Salar Zarandi

Senior Ios Developer @Mimi Hearing Technologies

Berlin, DE

Redesigned the Mimi Hearing Test in SwiftUI for the #1 app in the hearing test category (4.1M+ installs), improving user flows and adding features- Cut crashes ~42% via Crashlytics insights and race-condition fixes- Developed Hearing Number for Johns Hopkins University, focusing on reliability and data integrity- Contributed to a new, scalable SDK architecture that accelerates partner integration and enables future features, such as voice clarity- Built a CoreBluetooth end-to-end test app for in-office testing with partner headphones, improving reproducibility and release confidence- Updated SDK documentation and shipped an example app, reducing partner support tickets by about 10%- Raised SDK coverage from 70% to 84% and cut test suite time ~20% via parallelization- Added Swift Package Manager distribution and automated GitHub publishing- Implemented on-device region and locale logic to expose features appropriately- Worked cross-functionally with product managers, designers, and external partners to validate feasibility and troubleshoot integrations.