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Usman Ramzan

@usmanramzan1

iOS Developer at Redix, where I cut screen-mirroring latency by 22% and reduced memory use by 18%.

At Redix, I develop iOS modules and support a production app by refactoring legacy Objective-C/UIKit components and integrating Core ML and ML Kit for offline translation and OCR. I also migrated persistence layers to SwiftData and built App Intents integrations.

I engineered screen-mirroring client architecture with AVFoundation, cutting media-casting latency by 22%, and reduced the core framework memory footprint by 18% through Instruments profiling and automated tests.

At Unitsol, I developed fintech features including CoreNFC and QR payment flows, prepaid cards, cashback, and digital wallet services. I also built asynchronous data synchronization that cut transaction lag by 25%.

Experience

Work history, roles, and key accomplishments

Current

iOS Developer

Current

Redix

Aug 2025 - Present (1 year 1 month)

Develop, code, debug, and unit test iOS modules against technical requirements using OOP and MVVM/MVC design patterns. Provide technical support for an existing production application, refactoring legacy Objective-C/UIKit components and integrating Core ML and ML Kit for real-time offline translation and OCR pipelines.

Software Developer

Unitsol

Aug 2023 - Jul 2025 (1 year 11 months)

Developed and scaled secure fintech features (CoreNFC and QR payment flows, prepaid cards, cashback, digital wallet services) using MVC/MVVM architecture, meeting PCI-DSS baseline mobile compliance standards. Built asynchronous data-synchronization engines with Swift Concurrency and background RESTful API polling, cutting transaction lag by 25% and improving app responsiveness under load.

Core NFC QR Payments MVC MVVM Swift Concurrency REST APIs Core Data Encryption Authentication Git Code Review PCI DSS

Junior iOS Developer

iTechDoor Software Solutions

Aug 2022 - Jul 2023 (11 months)

Refactored core user-facing UI modules in high-traffic legacy UIKit applications, standardizing programmatic Auto Layout constraints and improving code maintainability per team coding standards. Streamlined networking code by converting callback-based logic into modular RESTful API handlers, decreasing crash frequency across dynamic data feeds.

UIKit Autolayout REST APIs Git Object Oriented Programming MVC Debugging iOS