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Code Refactoring and Modernization

Modernize legacy Java and Spring applications

Growing technical debt in Java and Spring-based systems generates real costs and blocks business development. Maintaining applications on outdated framework versions is a direct threat to security and stability.

We help you regain control of your code. We carry out strategic migrations to modern architectures (e.g., Spring Boot), optimize performance, and implement engineering best practices, such as Clean Code principles and design patterns. The result? Code that is easier to maintain, extend, and scale.

Key benefits

Easier Code Maintenance (TCO Reduction)

Optimized and modern code requires significantly less time for management and error diagnostics, which directly lowers the Total Cost of Ownership (TCO).

Higher security

We eliminate vulnerabilities by migrating systems from unsupported versions of libraries and frameworks, protecting your data and business operations.

Better performance

Unified environments and a modernized architecture translate into fewer failures and higher stability for key applications.

Modern Architecture (Faster Time-to-Market)

We enable your team to implement new features faster without fear of system destabilization, unlocking cloud-readiness and microservices capabilities.

Reduced Technical Debt (Technological Attractiveness)

A modern stack makes it easier to recruit and retain talented developers, increasing the productivity and morale of the development team.

Scope of modernization services

Spring migrations

We perform strategic migrations from older, monolithic Spring applications to the modern Spring Boot ecosystem, unlocking auto-configuration and microservices architecture readiness.

Liferay upgrades

We specialize in modernizing and migrating older Liferay instances to supported, stable versions, ensuring business continuity, security, and access to new features.

Java upgrades

We unify and consolidate application environments to current, supported JDK versions. We stabilize build and deployment (CI/CD) processes for full predictability.

Code refactoring
We identify and eliminate technical debt. We rewrite critical components according to Clean Code principles and design patterns, restoring code readability and maintainability.

How we work

1. Analysis

We start with an in-depth code and architecture audit. We identify critical areas, sources of technical debt, and potential security risks.

2. Planning

We create a detailed modernization roadmap, establish business and technical priorities, and define measurable project goals (KPIs).

3. Implementation

We work iteratively, refactoring key modules and migrating components (e.g., Spring, Liferay). We focus on evolutionary changes to minimize the risk of regression.

4. Testing

Every modernized part of the system undergoes rigorous testing. We implement or expand test automation to ensure code stability and quality.

5. Deployment

We automate build and deployment (CI/CD) processes. We unify production environments to ensure a smooth and predictable deployment of the modernized application.

6. Knowledge transfer

We hand over the modernized system to your team, complete with full technical documentation and best practices, to ensure a smooth maintenance handover.

Technologies we work with

Our modernization technology stack

We specialize in the Java ecosystem. Our core competencies include the in-depth modernization of systems based on Java, the Spring framework (including migrations to Spring Boot), and the Liferay platform.

Case Studies

See how we solved our clients problems

Warsaw City Hall

We consolidated 89 websites with different Content Management Systems into one website, with effective workflow.

European Space Agency

We updated and migrated content from 81 websites into a new single portal, which we designed and implemented.


Next Step

Regain control over technical debt and transform Java/Spring systems into a stable, modern foundation for business growth.

Let's discuss an application audit – start with an analysis that will point the best way towards security and lower maintenance costs.
ico_pgala
Piotr Gala 
Head of DevOps
eversis logo white PNG transparent

Lirowa 13, 02-387 Warsaw, Poland

NIP 5222694514

KRS 0000174032

+48 22 578 55 00

office@eversis.com

eversis logo white PNG transparent

Lirowa 13, 02-387 Warsaw, Poland

NIP 5222694514

KRS 0000174032

+48 22 578 55 00

office@eversis.com