Oleh

OLEH BRYZHAK
C++ SOFTWARE DEVELOPER | QT & LOW-LEVEL DEVICE SOFTWARE
Chernivtsi, Ukraine | [open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section)

PROFESSIONAL SUMMARY
C++ Software Developer with over 6 years of commercial experience specializing in desktop software for servicing
and recovering mobile devices. Built Qt-based solutions that communicate with MediaTek, Qualcomm, Exynos,
HiSilicon, and other platforms at both bootloader and operating-system levels. Experienced in protocol
implementation, USB traffic analysis, firmware research, multithreaded application development, and translating
undocumented device behavior into reliable product functionality.

CORE TECHNICAL SKILLS
Programming: C++ (C++11/14/17/20), STL, templates, object-oriented programming
Desktop Development: Qt Widgets, QML, WinAPI, multithreaded application development
Device Communication: USB, UART, COM/serial communication, proprietary protocols, bootloader and firmware-
level communication
Platforms: MediaTek (MTK), Qualcomm, Exynos, HiSilicon, Windows, Linux
Build & Version Control: CMake, QMake, Git, code review
Debugging & Analysis: GDB, Wireshark, USB protocol sniffers, Total Phase Beagle Protocol Analyzer, firmware
analysis, memory management
Hardware-Assisted Analysis: Cynthion FPGA platform, USB protocol monitoring and analysis
Spoken Languages: Ukrainian (Native), English (Intermediate)
Education: Master's Degree in Law, National University ‘Odesa Law Academy’ (2014)

PROFESSIONAL EXPERIENCE

C++ Software Developer | Confidential Company (NDA)
Budapest, Hungary | January 2024 - March 2026
 Researched undocumented communication mechanisms on Qualcomm, MediaTek, and Exynos devices and converted
technical findings into proof-of-concept implementations for new product capabilities.
 Created a Qualcomm Emergency Download protocol emulator on the Cynthion FPGA platform, enabling controlled
analysis and validation of low-level device exchanges.
 Extended a Qt/C++ recovery application with workflows for restoring firmware and critical device data on MediaTek- and
Exynos-based smartphones.
 Reverse-engineered USB communication sequences by capturing and interpreting traffic generated by devices and
third-party service tools.
 Investigated boot chains, firmware components, and platform-specific behavior to determine safe and repeatable
methods for device access and recovery.
 Worked from technical investigation through implementation and debugging, reviewing code and integrating research
results into the existing product architecture.
C++ Software Developer | Confidential Company (NDA)
Chernivtsi, Ukraine | January 2020 - December 2023
 Developed and maintained a multithreaded Windows desktop product in C++ and Qt for servicing mobile devices
connected to a PC.
 Designed reusable communication components for device detection, session management, data transfer, flashing,
reading, writing, and recovery operations.
 Implemented both standard and proprietary encrypted protocols operating through USB, virtual COM ports, device
bootloaders, and running firmware.
 Built diagnostic tooling around software and hardware protocol analyzers to trace data exchanges and isolate failures
across the PC-to-device communication path.
 Redesigned and implemented the application's Qt user interface, reorganizing key workflows and improving the usability
of device-service operations.
 Stabilized a mature legacy codebase by resolving defects and improving memory and resource handling in long-running
device communication workflows.
 Supported the complete development lifecycle, including technical estimation, solution design, implementation,
integration, debugging, and long-term maintenance.