Ștefan Drăgan

The project team developed a secure communication platform that included desktop, iOS, and Android applications, a communication server, and a customer portal.

My responsibilities included developing the desktop front-end user interface supporting Windows, macOS, and Linux and the communication, encryption, and storage modules. The desktop app was developed in C++ using Qt 5 and QML. I worked closely with the mobile and server teams, creating cross-platform features and communication protocols. Furthermore, I participated in the UI/UX design and system architecture development.

This project targets the development of the core file-scanning engine behind the Bitdefender AV. I was one of the developers in a small lean team responsible for building the solution.

MAIN RESPONSIBILITIES
• R&D and test new malware detection technologies
• Develop unpackers, unarchivers, scanning engines, and interpreters, and exploit detection heuristics modules
• Develop tools for automated malware analysis and signature generation
• Develop testing and general-purpose tools
• Perform reverse engineering, analyze, detect, and clean various types of malware
• Perform code review, code refactoring, and cross-platform software development
• Build automated and manual testing of the developed components
• Monitor, detect, and solve performance and stability issues

MAIN ACHIEVEMENTS
• Implemented most of the generic detection for exploits for more than ten years
• Applied clusterization algorithms in the process of signing malware
• Developed proprietary function and template class libraries
• Developed tools for crash analysis

This project aimed at building an OEM Antivirus SDK to unify multiple scanning engines under one single interface. I was one of the back-end developers integrating the agile scrum team working on this project.

RESPONSIBILITIES
• Research, develop, and test the Avira OEM Antivirus SDK's new functionality
• Follow and enforce C++ core guidelines
• Improve the build-system generator code with CMake
• Improve the build and test scripts using Python
• Improve the CI/CD process with Bamboo
• Review code using Bitbucket
• Develop cross-platform software
• Write and run automated unit-testing of developed components with GoogleTest
• Monitor, detect, and solve performance and stability issues

ACHIEVEMENTS
• Reviewed the architecture and implementation and proposed better solutions
• Improved the onboarding technical documentattor to speed up productivity
• Created step-by-step documentation for recurring internal technical impediments

This project focused on an open-source C# command line tool that renames files to their corresponding MD5 checksum. The tool is capable of recursively renaming files within directories and eliminating duplicates.