Migrate JSP Applications to React
Our phased JSP to React migration approach keeps every step transparent, from the first audit to the final release, so that you can modernize without the risk or chaos.
We accelerate every release cycle and solve the invisible costs of legacy tech. You get an app that is easy to maintain and a pleasure to use.
AWS Certified Cloud Practitioner
PCI DSS Compliance
HIPAA Compliant
Azure Solution Architect Expert
SOC 2 Type II Certification
GDPR certification
Azure Administrator Associate
Azure Developer Associate
Azure Fundamentals
Every new feature requires a full redeployment, blocking agile updates
Legacy JSP systems require constant patching, vendor updates, and manual deployment cycles
Rigid design of JSP apps requires custom workarounds for integration and scaling
JSP apps impose high security and compliance risks (GDPR/SOC2/HIPAA).
Risky and exhausting maintenance due to the shrinking pool of JSP specialists
For over 17 years, Corsac had been helping organizations across different niches move from legacy software to modern solutions. We have built a solid expertise in JSP to React migration, so whether you need a total code rewrite or rebuild a particular module, Corsac has you covered.
Reduced hotfix release time by
70%Achieved backlog visibility of
100%
Reduced code duplication and raised development efficiency by
75%Lower average time gap in cross-platform feature delivery by
80%
JSP refactoring services by Corsac eliminate root causes of legacy slowdowns and allow growth across business and tech.
Cut maintenance costs by shifting to lighter, scalable web systems.
Ship new features faster with decoupled UI and backend workflows and parallel development.
Refresh the user experience to keep customers’ retention.
Connect easily with analytics, AI, and modern tools.
Lower risk through gradual, reversible modernization.
Improve security and compliance with up-to-date frameworks.
Refactor monolithic JSP apps into a modular setup with React frontends and Java backends.
Replace JSP Views with dynamic React components powered by APIs for better scalability and UX.
Streamline data flow and simplify integrations.
Modernize build and deployment using automated CI/CD pipelines.
Adopt cloud-native practices like Docker, Kubernetes, and managed cloud hosting.
Add observability through logging, tracing, and real-time monitoring.
Let us help you rebuild what’s holding you back.
JSP refactoring by Corsac transforms legacy JSP systems into fast user-friendly platforms. During JSP to React migration, our team modernizes your stack with thoughtful UX design, backend cleanup, and automated delivery with minimum disruption to everyday workflow.
We aren’t a full-stack agency. We’ve built our team, processes, and tech strategy specifically to tackle legacy issues and help mid-market players scale and innovate.
We integrate with your workflows, minimizing interference with your developers. While utilizing your Git, CI/CD, and tools, we operate independently, letting your team focus on their work.
Your aging system drains your business resources through slow hiring, security gaps, and delayed launches. We reduce these “dark tech debt” losses before they impact your revenue.
We remove legacy barriers preparing your systems for advanced tech. You can embrace new tools with the future-ready and ROI-driven architecture.
Modernization efforts will be ineffective if the core issue is institutional rigidity. We reveal hidden limits and help grow with flexibility.
We treat your system efficiently: evolve the functioning parts and replace only the ones that require change.
We create a step-by-step roadmap for modernization that balances tech impact and business continuity. All decisions are made based on a rigorous audit of your software, its codebase, dependencies, and integrations.
We separate the frontend from backend logic and introduce modern REST or GraphQL APIs. Corsac team redesigns the system’s architecture to make it cloud-ready and flexible for future modernization and updates.
Replace outdated JSP pages with React components with near-zero disruption to your core system.
Rebuild the legacy interface into a responsive, maintainable React frontend.
Create a reusable design system and component library for clean and responsive AI.
Automate builds and deployments by implementing a reliable CI/CD pipeline.
Maintain hybrid coexistence of JSP and React software during the migration
Provide transparency and safe rollback options at every stage of the migration.
We connect the new React interface to your backend and external systems, and verify each integration with automated tests. Our DevOps team handles cloud deployment, performance tuning, and security setup to deliver a stable, compliant release ready to grow.
Book an expert consultation to uncover gaps in your system. Let us modernize your business to its maximum potential.
We focus on modernization for companies unable to grow due to aging systems
We replace only what must be changed, protecting your investment and CTO’s credibility.
HIPAA, HL7/FHIR, SOC2, GDPR, ISO compliance is integrated into every stage.
Integrating into your Git, CI/CD, and workflow tools, we make modernization visible, testable, and traceable
We uncover hidden costs, feature delays, and security gaps and offer ways of their removal
By providing CEOs stakeholder-ready roadmaps and progress metrics, we enable well-grounded transformation
They fulfill your task without seeking to address the issue at the root
Dispersing the focus, they fail to meet specific Healthcare G and other industry requirements
Generalized practices, regardless of the product, team, or business specifics
Initiate full rewrites instead of using the working parts and considering business context
Insufficient collaboration leads to poor handover, with documentation debt and weak enablement.
Development happens in isolation, prioritizing code delivery over actual business value.
Corsac works independently from your internal team to let them focus on critical tasks. We integrate into your workflows with GIT-first, testable, and always traceable JSP refactoring. When the migration is complete, we train your team so they can work with the system and modernize it autonomously when needed
There are a couple of red flags in your JSP software that you, as a decision maker, cannot ignore. In general, JSP to React migration is an absolute must if an existing software is getting harder and more expensive to maintain, and it cannot keep up as your organization grows.
If you need to migrate JSP to React, all you need to do is contact our team. We will carefully audit the state of your software, discuss your business goals, and create a phased migration plan. We do not engage your internal resources and work independently, with each step transparent and traceable.
There’s no fixed timeline. The duration would depend on the volume and complexity of the software, the amount of code that needs to be extracted and refactored, and the target architecture. In general, it takes a few weeks to move from JSP to React a small, low-complexity app. A high-complexity enterprise system could take several months to a year.
We aim for near-zero downtime during the JSP to ReactJS rewrite and achieve it by sticking to a phased migration plan with all changes applied while the legacy app is still live. Corsac experts gradually shift live traffic to the new system for instantaneous rollback to the stable JSP environment if any critical issues are detected.
