Browse categories
Explore
Fiverr Pro
English
$
USD
I will analyze your legacy application and create a modernization plan
Victor Herrera
About this gig
Do you have an old application but are not sure whether to refactor, migrate, or rebuild it?
I will analyze your existing application and create a practical modernization roadmap based on its architecture, technologies, dependencies, technical debt, and business constraints.
I can review legacy Java/JSP/Struts applications, Spring-based systems, React or jQuery frontends, REST APIs, Hibernate/JPA, PostgreSQL, Docker setups, and general web applications.
Depending on the package, I will identify:
- Architecture and maintainability issues
- Outdated or risky technologies
- Technical debt and migration risks
- What should be kept, refactored, replaced, or migrated
- Recommended target architecture and technologies
- A prioritized, phased modernization roadmap
You will receive a clear written report you can use to plan the next steps with your team or developer.
This Gig is for analysis and planning only. Code implementation, bug fixing, and migration work are not included.
For large or complex applications, please contact me before ordering so I can define the right scope.
Get to know Victor Herrera
Victor Herrera
Software Engineer
- FromPortugal
- Member sinceAug 2026
Languages
Spanish, English
Full-Stack & Mobile Developer with 10+ years of experience building, maintaining, and modernizing real-world software. I help businesses turn ideas into reliable apps and upgrade legacy systems through refactoring, migration, and modernization. Experience across web, mobile, backend, APIs, databases, and enterprise systems using Java, Spring Boot, React, React Native, PHP, .NET, PostgreSQL, JavaScript, etc. I focus on clean, maintainable solutions tailored to business needs.
My Portfolio
Other Software Development Services I Offer
FAQ
Do you need access to the entire source code?
Not always. For a focused assessment, I can review specific modules or components. For a complete modernization roadmap, broader access will produce better recommendations.
Will you modify or migrate my application?
No. This Gig focuses on analysis and modernization planning. Implementation, migration and refactoring can be handled as a separate project.
Do you only analyze Java applications?
No. I can also analyze general web applications, including React, JavaScript, jQuery, REST APIs and related backend technologies.
Will you recommend rewriting my application from scratch?
Only if there is a strong technical or business reason. In many cases, incremental modernization is safer and more cost-effective than a full rewrite.
Will I receive an implementation estimate?
Depending on the package, I can provide approximate effort ranges and priorities. A final project quote may require a more detailed scope.
What if my application is very large or complex?
Please contact me before ordering. I can review the scope and create a custom offer appropriate for the application.
