Ghasem Shirdel Email & Phone Number

As the Android technical lead for the digital signature project, we decided to steer the project towards Kotlin Multiplatform (KMP) after assessing various needs. This approach would allow us to create a shared codebase that simultaneously covers market demands for both platforms. Initially, a research team was formed to explore the feasibility of implementing digital signatures on the iOS platform. Below are some of the challenging tasks I implemented. Additionally, we needed to enhance security and dependency injection (DI):• Developed the sorted JSON library with the capability to sort keys within JSON objects (utilizing the Composite design pattern)• Created a key and certificate management library using KeyStore, KeyChain, and memory management in Objective-C and Kotlin Native• Developed an ASN.1 parser for parsing key and certificate data on iOS• Implemented thread safety for classes such as SimpleDateFormat and KeyStore• Built a Kotlin Multiplatform (KMP) JOSE library for signing server requests• Established sub-modules for debug and release configurations and environmental flavors in KMP (currently, this feature is only available in Android Gradle)• Handled DeepLink and OTP Auto Fill in KMP• Provided a solution for dependency management in the SDK using Koin Isolate Context• Enhanced security measures in C++, including root and emulator detection, defining constant strings using AES GCM encryption, adding SSL pinning, and performing reverse engineering tests on the SDK output using jadx and Ghidra

Mashhad, Razavi Khorasan, Iran

Part Software Group is a leading company in the field of banking and financial apps, known for its dynamic team that stays at the cutting edge of technology. Notable projects by this company include the ICup and Signal applications.Some of my work on the digital signature project includes:• Designing the user interface with Jetpack Compose (converting XML code to Compose)• Creating themes and dynamic two-tone icons in the UI SDK, configurable by the host app• Developing a PDF viewer library in Compose and rewriting the date picker within it• Building components such as OTP, Single Snackbar, and Single Bottom Sheet• Encrypting sensitive data in the app using the AES GCM algorithm• Integrating the JOSE library for signing app requests• Establishing mechanisms for logging and monitoring (Sentry, e.g.)• Adding a CI/CD pipeline for tasks such as Changelog (with customizable Python and Bash scripts), generating documentation (Dokka), code style and analysis (Detekt), and drawing dependency graphs

Mashhad, Khorasan, Iran

At Veerasense, we focused on AI applications. The mobile team closely collaborated with the hardware team, facilitating communication between the camera for image processing and Bluetooth for interacting with physical devices.One of the projects I contributed to involved recording video and visualizing point cloud files. This project utilized technologies such as OpenGL, Jetpack Compose, CameraX, Retrofit2, DataStore, Room, and Clean MVI.

As a part-time programmer, I worked on various university and corporate projects, including attendance systems, shopping applications, and tourism apps.