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Fiverr Pro
English
$
USD
Jan Drabner is unavailable until Jul 31, 2026
I will debug and optimize your website or application
Jan Drabner
Vetted by Fiverr Pro
Jan Drabner was selected by the Fiverr Pro team for their expertise.
About this gig
As a software developer with more than 15 years of experience with all major programming languages, dozens of frameworks, and encountering pretty much every kind of bug, I can confidently say:
If the issues in your project are fixable, I will be able to fix them.
My services include, but are not limited to:
- Debugging pesky and hard-to-track issues in your code base
- Backend & full-stack websites, applications as well as video games
- Optimizing existing applications for performance, memory use, maintainability
- Removing code smell, updating legacy code
- Analyzing your code base to find potential issues
- Improving your own API design, external API integration & AI integration
- Tutoring/consulting on debugging and optimization
- (On higher tiers) Once the bugs are fixed, implementing tests to make sure there will not be regressions
Programming languages and tools: C, C++, C#, Java, Python, GDScript, JavaScript, TypeScript, Flutter/Dart, bash, PHP, and too many tools/frameworks to list here.
Projects often require the use of different languages for different parts, so the amount of different languages I am familiar with is very useful to tackle issues in just about every code base.
Get to know Jan Drabner
Jan Drabner
Unavailable
Backend and Fullstack Dev, All Platforms, Debugging And Optimization
Jan Drabner is part of the Fiverr Pro catalog and has been hand-picked by a dedicated Fiverr Pro team for their skills and expertise.
Vetted for
Software Development
- FromFinland
- Member sinceApr 2025
Languages
English, German, Finnish
As a qualified Software Developer & 3D Programmer with over 15 years of experience in the industry, I offer
knowledge and proficiency in a large number of programming languages, frameworks and platforms.
This includes (almost) anything from lowest-level embedded development on Linux with pure C over time-critical optimization of video encoding in AWS EC2 with Python to web-only and mobile-first frontend development in
Flutter with and without 3D rendering.
If it can be done via programming, I am confident that I can do it, and will do so reliably and with transparent
communication.
Other Software Development Services I Offer
FAQ
Are you really proficient with all these programming languages?
Yes, really. I was always curious about tackling new things in different languages and always try to seek out projects that offer something new. Over 15+ years, that simply lead to me accumulating quite a bit of expertise in various areas of the industry.
Are you flexible with deliveries?
It all depends on the project. The tiers of my gigs are a general guideline meant to cover as many cases as possible and be stackable, but of course software development is rarely that rigid.
What if you cannot fix the problem?
Some problems simply turn out unfixable, or the fix would be too cost intensive. In those cases, I can generally still recommend (and implement) a workaround after discussing how to proceed. If even that fails, we can discuss a partial refund based on the time spent.
Are you flexible with the pricing?
The prices here are assuming full-time working on your project until delivery. If you think you have a project that could be done quicker or with fewer hours per day over the delivery time, we can figure something out.
