RPG to Java Migration Services
Corsac helps organizations conduct phased RPG-to-Java conversion without ground-up rewrite. We minimize maintenance costs and dependence on RPG specialists.
While decomposing a tightly coupled RPG code into modular Java architecture, we preserve critical business logic and operational continuity.
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
Maintenance costs keep rising; constant fixes drain your budget
Even minor updates require risky changes across the entire system
Your core operations depend on a shrinking pool of RPG talents
Your scalability is limited by outdated, rigid architecture
Integrating with modern APIs, cloud services, and third-party tools is too challenging
With over 18 years of experience in software modernization, we help organizations conduct RPG to Java transition with minimal risks and long-lasting outcomes. Check the results below.
Antibiotic Susceptibility Test Time
72h → 3hAI Bacterial Clasification Accuracy
95%
Reduced device setup time
60%Reduced memory use
38%Corsac combines strong legacy RPG and modern Java expertise, technical skills, and a business-oriented approach to address complex modernization challenges.
Reduce operational costs by improving maintainability
Accelerate delivery of new features to outpace competitors
Ensure better security and compliance
Enhance scalability
Get consistent, reliable data to support confident business decisions
Eliminate dependence on scarce expertise and expensive aging licenses
Keep customer operations running smoothly during transition
Help internal teams focus on strategic tasks and innovation
Replace a rigid monolithic architecture with a flexible, scalable system
Eliminate tech debt and provide a clean, reliable codebase
Create well-structured documentation
Enhance data consistency
Ensure smooth integration with modern APIs and platforms
Implement CI/CD pipelines for faster, automated delivery
Reduce migration risk thanks to canary deployments
Validate functional equivalence through automated and manual testing
Make your system cloud-ready
Let us help you rebuild what’s holding you back.
With Corsac, your RPG to Java transition will be well-planned, low-risk, and built around your strategic business growth. We’ll ensure your operational continuity while enhancing architecture, accelerating delivery, and driving innovation.
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 start with an in-depth analysis of your outdated system to uncover architectural constraints, infrastructure issues, security gaps, and hidden threats. Also, we assess migration readiness and outline modernization opportunities.
We create a prioritized, phased, risk-managed strategy with a tailored approach to your migration needs. Based on this, we decompose your tightly-coupled monolithic app into a scalable, cloud-ready Java architecture.
Improve code quality by removing redundancy, duplicated logic, and inefficiencies
Incrementally redesign the application into a scalable, modular Java architecture while validating business logic at each stage
Apply access controls and audit logging to meet your compliance requirements
Standardize and optimize the database using JPA/Hibernate and build integrations with retry logic, validation, and monitoring
Implement encryption, authentication, and other modern security practices
Thanks to a combination of automated and manual testing, we check both system health and its functional equivalence with the original RPG app. CI/CD pipelines enable fast deployment with minimized risks. We also continuously monitor the system, outlining ways for resource optimization.
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.
First, RPG to Java migration helps you get rid of legacy constraints that affect your app performance and growth. Secondly, you can significantly reduce maintenance costs and invest in innovation instead of fixing recurring errors. Also, Java is a proven technology to accelerate your time-to-market and outpace your competitors.
Everything depends on the size and complexity of your project, your business requirements, strategic goals, and timeline. We always conduct a pre-migration audit to get a realistic view of the system, assess the modernization scope and depth, and choose the most optimal approach. Based on these insights, you can get more precise budget forecasts.
Yes. Not all applications built with RPG programming require radical redesign. You can move to Java at different levels, e.g., code refactoring, database migration, integration modernization. We introduce all the changes incrementally, so your system will be safeguarded from risky disruption.
Sure. We use AI-based tools to accelerate the modernization process and maximize its outcomes. It’s built on a Retrieval-Augmented Generation (RAG) architecture and powered by a Multi-Agent Swarm. It can cover a wide range of tasks, from legacy audit and strategy creation to generation of modernized code.
Yes. Our collaboration with a client does not end after delivery. We provide continuous system monitoring to ensure performance stability and optimize resources. Also, we offer expert training to transfer system knowledge and help your internal team manage the system independently.
