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Alvin Hussain

@alvinhussain

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Senior iOS developer specializing in performance‑focused, secure, hardware‑integrated native apps.

United States

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What I'm looking for

I seek a role where I can lead iOS engineering efforts on secure, performance‑critical, hardware‑integrated apps, collaborate cross‑functionally, and drive CI/CD and test automation improvements.

I am a Senior iOS Developer with 7+ years building high‑performance, secure, and scalable native iOS applications for complex, hardware‑integrated environments.

I specialize in Swift and Objective‑C and have deep experience with AVFoundation, Core Image, Core Bluetooth (BLE), and low‑level iOS internals to deliver features such as real‑time video processing at 60 FPS on modern devices.

I drive security and reliability through SSL pinning, secure Keychain storage, extensive testing (XCTest, XCUITest), Instruments‑based performance tuning, and CI/CD pipelines (Azure DevOps, Fastlane), contributing to significant crash‑rate reductions and successful third‑party security audits.

I collaborate closely with hardware, backend, QA, and design teams, manage App Store releases, and have led multiple production and beta releases to large user bases while improving code coverage and reducing regressions.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Developer

Current

Horizon

Mar 2022 - Present (3 years 7 months)

Architected and delivered high-performance native iOS applications, implementing real-time video processing that achieved consistent 60 FPS on iPhone X+ and pioneering SSL pinning and secure Keychain storage to pass third-party security audits with zero critical vulnerabilities.

Swift Objective C AVFoundation Keychain Services Performance Tuning Fastlane

iOS Developer

Contech Systems

Jun 2020 - Feb 2022 (1 year 8 months)

Implemented reactive user interfaces with UIKit and Combine, integrated RESTful APIs with Core Data for offline sync, and increased test coverage from 55% to 75% through comprehensive unit and UI tests, reducing regression bugs significantly.

UIKit Combine Core Data RESTful APIs XCTest XCUITest Instruments (Time Profiler Fastlane

Mobile Developer

Unknown

Apr 2018 - May 2020 (2 years 1 month)

Built and maintained key application modules in Swift and Objective-C, contributed to four major releases, performed performance profiling and bug fixes, and supported Git Flow adoption to streamline feature branch workflows.