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I will fix cpp qt desktop application bugs on windows linux or macos
Oleg G
About this gig
Need help fixing a bug in your C++ or Qt desktop application?
I'm a Senior C++/Qt developer with nearly 20 years of experience building, debugging, and optimizing desktop software for Windows, Linux, and macOS.
I can help with:
- Crashes, freezes, and unexpected behavior
- Qt Widgets, signals/slots, and UI issues
- Memory leaks, threading, and performance problems
- CMake, build errors, and dependency issues
- File handling, SQLite, and application logic
- Windows-specific and cross-platform bugs
I work with C++11/14/17/20, Qt 5/6, STL, Boost, CMake, and debugging tools.
My approach is simple: reproduce the issue, investigate the cause, implement a focused fix, and test the result.
Packages cover a limited amount of work:
- Basic: up to 1 hour
- Standard: up to 4 hours
- Premium: up to 9 hours
If an issue requires more time, I'll explain the findings and discuss the next steps before proceeding.
Please message me before ordering with a description of the issue, your OS, Qt version, and any relevant logs.
Get to know Oleg G
Oleg G
Senior Cpp Qt Developer Desktop Apps Performance
- FromThailand
- Member sinceOct 2026
- Avg. response time2 hours
Languages
English, Russian
Senior C++/Qt desktop engineer with 20 years of experience fixing and optimizing Windows, Linux, and macOS apps.
I work with C++17–23, Qt 5/6, QML, CMake, SQLite, multithreading, cryptography, and performance profiling.
I resolve crashes, memory leaks, freezes, build failures, cross-platform issues, and slow startup. Results include 92% shared code across platforms, startup reduced from 8s to 1.2s, and software used by 50,000+ users.
You’ll receive a clear diagnosis, focused fix, tested changes, and technical notes. Please send the issue, OS, Qt/compiler versions, and logs.
My Portfolio
FAQ
What do you need to start?
Please send a description of the issue, steps to reproduce it, your operating system, C++/Qt version, and any error messages or logs. Access to the relevant source code may also be required.
Can you fix any C++ or Qt bug?
I can investigate a wide range of C++/Qt issues, but some bugs require more time or access than a standard package allows. Please contact me first so we can agree on the scope.
Do you support Windows, Linux, and macOS?
Yes, I work with cross-platform C++/Qt applications. Testing depends on the target environment and available hardware. Please tell me which operating system and version you're using before ordering.
What will I receive?
Depending on the agreed scope, you'll receive the code changes or patch, a short explanation of the issue, and testing notes. If the problem cannot be fully resolved within the package limit, we'll discuss the findings and next steps.
