Ștefan Drăgan
Verified Expert in Engineering
Software Developer
Ștefan's been developing cross-platform antivirus engines over the last 13 years. For the past few years, he’s focused on projects that involve maintaining stability, speed optimization, low-memory consumption, and fault prevention. His current objective is to explore new opportunities and advance his general knowledge level.
Portfolio
Experience
Availability
Preferred Environment
Visual Studio, Windows 10
The most amazing...
...projects I've worked on are a process explorer, a 3D functions renderer, a solid material physics simulator, a diagnosis expert system, and an AV scan engine.
Work Experience
Qt, C++, and QML Developer | via Toptal
Mode Software Inc.
- Extended the functionality for the desktop version of the Ciphr/Mode app using Qt, C++17, QML, and JavaScript.
- Tracked and fixed bugs using Jira as a reporting tool.
- Worked on implementing the UI and core functionalities, leveraging QML, C++, and JavaScript.
- Improved the recruitment tests used during technical interviews.
- Enhanced and extended the build-system generator code (CMake).
- Wrote and ran automated unit testing for developed components (GTest).
- Discussed and implemented product requirements in software and UX designs.
- Maintained technical documentation up to date (Confluence).
- Participated in and conducted scrum meetings as a temporary scrum master.
- Extended the functionality of shared libraries (Rust).
Specialist Software Developer
Avira
- Researched, developed, and tested the Avira OEM Antivirus SDK's new functionality.
- Adhered to and enforced the C++ core guidelines throughout the development process.
- Improved the CMake build-system generator code, the build and test scripts with Python, and the CI/CD process using Bamboo.
- Reviewed the code using Bitbucket and developed cross-platform software utilizing the Windows Subsystem for Linux (WSL).
- Wrote and executed automated unit tests for the developed components using GoogleTest (gtest).
- Monitored, detected, and solved performance and stability issues.
- Analyzed the architecture and implementation, providing suggestions for improvements in certain areas that were partially adopted.
- Improved the onboarding technical documentation to speed up productivity.
- Created step-by-step documentation for recurring internal technical impediments.
AV Engine Development Engineer
Bitdefender
- Researched, developed, and tested new malware detection technologies.
- Developed unpackers, the Unarchiver, scanning engines, interpreters, and exploit detection heuristics.
- Built tools for automated malware analysis and signature generation.
- Reverse-engineered, analyzed, detected, and cleaned up various types of malware.
- Reviewed code and developed cross-platform software.
- Performed automated and manual testing of the developed components.
- Monitored, detected, and solved performance and stability issues.
- Implemented most of the generic detection for exploits for more than a decade.
- Applied AI algorithms in the process of signing malware.
- Developed a proprietary function and template class libraries and created tools for crash analysis.
Team Lead
Bitdefender
- Provided technical guidance to new junior team members.
- Created video tutorials for solving urgent issues like debugging freezes.
- Built step-by-step documentation for major internal technical procedures.
- Improved the recruitment tests used during technical interviews.
Programmer Analyst
Softwin
- Developed antivirus scanning engines for Bitdefender AV.
- Created antivirus testing and general-purpose tools.
- Coded an analysis and unpacking support extension for Armadillo and MoleBox packers.
- Performed code reviews and code refactoring and improved coding standards.
Experience
Secure Communication Platform | Post-Quantum Encrypted
https://www.mode.io/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.
Bitdefender AV File Scanning Engine
https://www.bitdefender.com/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
Avira OEM Antivirus SDK
http://www.avira.comRESPONSIBILITIES
• 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
RenMD5 | Rename-file-to-MD5 Tool
https://archive.codeplex.com/?p=renmd5Education
Master's Degree in eBusiness Online
Bucharest Academy of Economic Studies - Bucharest, Romania
Bachelor's Degree in Systems and Computer Engineering
University Politehnica of Bucharest - Bucharest, Romania
Assistant Programmer's Degree in Information Technology
Tudor Vianu IT College - Bucharest, Romania
Certifications
Learn Rust by Building Real Applications
Udemy
Agile Certified Practitioner (PMI-ACP)
Simplilearn
Professional Scrum Master I (PSM I)
Scrum.org
Agile Scrum Master (ASM)
Simplilearn SkillUp
2020 Complete Python Bootcamp: From Zero to Hero in Python
Udemy
Gamification & Behavioral Design: The Octalysis Framework
Udemy
Java Design Patterns and SOLID Design Principles
Udemy
Agile with Atlassian Jira
Coursera
Fluency in English Language: Intermediate (Estimated)
Duolingo
Skills
Libraries/APIs
Windows API, OpenGL, Microsoft Foundation Class (MFC) Library, Standard Template Library (STL), Sockets, Armadillo, Microsoft Foundation Classes (MFC), Win32 API
Tools
Microsoft Visual C++, Visual Studio, CMake, Turbo Pascal, LaTeX, Flash, Adobe Flash, Bamboo, Bitbucket, Visual Studio 2019, Jira, Confluence, Microsoft Visual Studio, Subversion (SVN), Git, Interactive Disassembler (IDA), Interactive Disassembler (IDA) Pro, Conan
Languages
C++, C, C++98, C++11, Assembler, Pascal, Visual FoxPro, Python 2, Visual Basic, Visual Basic 6 (VB6), Python 3, C#, Java, Python, Assembly Language, JavaScript, Assembler x86, SQL, Lisp, C++17, QML, Rust
Paradigms
Refactoring, Test-driven Development (TDD), Object-oriented Programming (OOP), Cross-platform, Testing, Continuous Delivery (CD), Continuous Integration (CI), Kanban, Scrum, Agile, Gamification, Behavioral Design, Unit Testing, Automation, Design Patterns, Class-based OOP, Object-oriented Design (OOD), Concurrent Programming, Best Practices, API Architecture, Desktop App Development
Industry Expertise
Marketing
Platforms
Windows, Visual Studio 2017, Software Design Patterns, Windows UI
Frameworks
Google Test, .NET, Qt 5, Qt, Qt Quick
Other
Protocol Buffers, Software Development, Programming, Computer Science, APIs, SDKs, Antivirus Software, Code Review, English-Romanian Translation, Data Structures, Computer Security, Algorithms, Windows 10, Design Principles, Profiling, Malware Analysis, Recruiting, Team Mentoring, Networking, Software Analysis, Embedded Software, Business, SOLID Principles, Windows Subsystem for Linux (WSL), Training & Training Content Development, Machine Learning, OOP Designs, Multithreading, Debugging, Runtime Debugging, Shell Scripting, Training, Public Speaking, Coaching, Cross-platform App Development, Reverse Engineering, UI Programming, Scrum Master, Startups, PSM-1, IT Project Management, Recruitment, Cryptography, Optimization, Autotesting, HTTPS
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