Our agency will rewrite legacy code, refactor or modernize your codebase


Vetted Pro
Level 1
Agency
Vetted by Fiverr Pro
Sibers was selected by the Fiverr Pro team for their expertise.
About this gig
We rewrite, refactor, and modernize legacy code - turning outdated, fragile systems into clean, secure, and high-performing applications.
We've been developing software since 1998, back when PHP 3 and Delphi were cutting edge. That's why when we say we can handle your old codebase - we mean it.
Over the years, we've upgraded and rebuilt applications written in PHP, Classic ASP, Java, Python, and more, safely migrating them to modern frameworks like .NET, Django, Laravel, React, and Symfony.
You'll get:
- Complete analysis of existing codebase
- Refactoring or full rewrite (based on project scope)
- Migration to modern frameworks or languages with zero data loss
- Security and performance optimization
- Updated documentation and maintainable architecture
Whether your system is a vintage web app, a dusty monolith, or an aging backend that somehow still works, we'll bring it back to life - faster, safer, and ready for the future.
Let's turn your legacy code into something you'll actually want to maintain.
Respect third-party rights
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About this agency

Vetted Pro
Agency
100 employees
Level 1
Sibers 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
AI Development
Mobile App Development
Software Development
Website Development
- FromUnited States
- Member sinceAug 2024
- Avg. response time8 hours
- Last delivery2 days
Languages
English
Portfolio
Other Website Development Services we Offer
FAQ
Do you fix small bugs or minor code issues?
We do fix bugs, especially when they’re connected to outdated code or architecture issues. Instead of quick patches, we focus on making your system more stable and easier to maintain long-term.
Which technologies do you work with?
We’ve worked with almost every tech generation since 1998 — from PHP 3 and Classic ASP to modern stacks like .NET, Django, Laravel, React, or Symfony. If your project runs on something “ancient,” we’ve probably seen it before.
What’s the difference between refactoring and rewriting?
Refactoring means improving existing code without changing its functionality. Rewriting means rebuilding your system from scratch using modern technologies. We’ll help you decide which approach makes the most sense for your case.
Can you migrate my old system to a modern framework?
Absolutely. We handle safe migrations with zero data loss, moving systems from legacy platforms (like Delphi, VB.NET, or PHP 5) to modern, secure frameworks such as Django, Laravel, or ASP.NET Core.
Will my current data and users be preserved?
Yes. We design migration plans that ensure data integrity, user continuity, and minimal downtime during deployment.
Can you also improve performance and security?
Of course. Every modernization includes performance optimization, security upgrades, and code cleanup — so your system runs faster, safer, and more efficiently.
Do you communicate fluently in English?
Yes, we do. Clear communication is part of our workflow — from planning to delivery, you’ll always know what’s happening and why.
What if I’m not sure how outdated my code is?
That’s what the first step is for. We can start with a full audit and provide a modernization roadmap before any refactoring or rewriting begins.
1 reviews for this Gig
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Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
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N nkwainnoel
Repeat Client

United States
Thorough security audit of our Next.js marketplace. Identified 10+ real vulnerabilities across authentication, file uploads, and admin permissions — each with clear file paths, exploit scenarios, and fix recommendations. Professional communication and fair time estimates. Would hire again.
$100-$200
Price
5 days
Duration
Helpful?
1 reviews for this Gig
| (0) | ||
| (1) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
N nkwainnoel
Repeat Client

United States
Thorough security audit of our Next.js marketplace. Identified 10+ real vulnerabilities across authentication, file uploads, and admin permissions — each with clear file paths, exploit scenarios, and fix recommendations. Professional communication and fair time estimates. Would hire again.
$100-$200
Price
5 days
Duration
Helpful?
