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Enterprise Legacy Software Modernization Services in the USA & UK

Eliminate technical debt, migrate complex core systems to the cloud, and unlock future readiness. LeverX redesigns, refactors, and replaces legacy applications while ensuring absolute data integrity and strict regional regulatory compliance.

LeverX Is Your Trusted Partner in Legacy Software Modernization

LeverX is a global system integrator with 20+ years of enterprise engineering experience. We help Fortune 500 companies modernise legacy IT infrastructure, eliminate technical debt, and safely migrate complex, platform-agnostic applications to the cloud.

We provide on-the-ground support across both regions, with teams regularly operating in major business and tech hubs including New York, Austin, and Miami in the US, and London, Manchester, and Birmingham in the UK. Our experts are always ready to meet offline, conduct on-site system audits, and work directly alongside your IT team.

Whether refactoring custom code, re-architecting monolithic systems into microservices, or replacing obsolete software, we ensure zero business disruption. Every project is executed in strict alignment with regional compliance standards, including SOC 2, HIPAA, and UK GDPR.

1,500+
successful projects
15
offices, 10+ countries
2,200+
employees
700+
certified experts

Our Comprehensive Legacy Software Modernization Services

LeverX ensures your software is not only current but also optimized for future challenges, enabling your business to thrive in an evolving digital landscape. Every service is executed in strict alignment with US and UK regulatory and data security standards. Our core services include:

Software Audit and Review

Comprehensively analyzing existing systems to pinpoint inefficiencies, security vulnerabilities, and compliance gaps (including SOC 2, HIPAA, and UK GDPR), while assessing performance, technical debt, and infrastructure costs to identify key areas for enhancement.

AI-Driven Modernization

Utilizing AI and ML frameworks to automate and accelerate the modernization lifecycle, including intelligent code analysis, automated refactoring suggestions, and smart testing to enhance overall efficiency and accuracy.

Cloud & Infrastructure Transformation

Modernizing your current IT infrastructure by securely migrating it to scalable public or private cloud architectures (AWS, Azure, GCP), leveraging microservices, containerization, and serverless solutions to reduce on-premises overhead.

Code Refactoring

Optimizing and restructuring existing codebases to improve maintainability, performance, and scalability without changing external behavior, making it easier for your internal IT teams to manage.

Re-Engineering Services

Transforming rigid legacy systems into modern applications by rethinking and redesigning their core architecture, dependencies, and functionalities from the ground up.

API Utilization & Development

Building secure new APIs or leveraging existing ones to enable seamless, low-latency integration between legacy environments and modern applications, fostering a cohesive corporate IT ecosystem.

Application Rationalization and Modernization

Evaluating your entire application portfolio to identify redundant, inefficient, or outdated systems and developing a strategic roadmap for their consolidation, retirement (decommissioning), or modernization.

Data Migration and Cleansing

Using LeverX’s Data Management Platform, we securely migrate data from legacy databases to modern environments, accompanied by cleansing processes that ensure data quality, integrity, and strict regional compliance. We also implement Data Fabric and Data Mesh approaches to support unified data management and compliance audits.

Performance Optimization

Fine-tuning applications and infrastructure to enhance speed, responsiveness, and overall efficiency, successfully eliminating the architectural bottlenecks inherent in legacy enterprise systems.

Not Sure Where to Start?
Start with Our Bespoke SAP Consulting

Benefits of Modernization with LeverX

Partnering with LeverX for your legacy system modernization project delivers measurable results that directly impact your bottom line and competitive advantage:

20-30% cost reduction

Achieve significant expense reductions across your infrastructure, licensing, and on-premises footprint. Transitioning to cost-efficient cloud environments through rehosting and replatforming optimizes your TCO.

25-35% improved operational efficiency

Eliminate technical debt. Restructuring codebases and leveraging modern APIs accelerates core business processes, minimizes manual intervention, and significantly lowers long-term maintenance costs.

Business agility

Replace rigid legacy structures with flexible, cloud-native architectures. This enables faster feature deployment, seamless third-party integrations, and the ability to pivot to new market opportunities with greater speed.

Enhanced security

Fortify your cybersecurity posture with advanced protections, including modern encryption standards, multi-factor authentication, and cryptographic protocols. We reduce infrastructure vulnerabilities to help you achieve full compliance with strict regional standards like SOC 2, HIPAA, and UK GDPR.

Up to 40% reduced downtime

Minimize operational interruptions through infrastructure modernization, fault-tolerant architectures, and proactive monitoring. Our phased migration methodology reduces transition risks and ensures business continuity with zero disruption to daily workflows.

Increased innovation capacity

Unlock the ability to seamlessly adopt cutting-edge technologies like Generative AI, machine learning, and advanced analytics. Transform your IT organization from reactive troubleshooting to proactive value creation.
Are legacy systems slowing down your business operation?
Unlock your innovation potential.

Henry Traverso

Director of Client Solutions

Why Choose LeverX for Legacy Software Modernization?

20+ Years of Enterprise Engineering

With over two decades of global system integration experience, we possess the technical depth to manage complex, multi-layered modernization programs. We help Fortune 500 leaders eliminate crippling technical debt and transform legacy IT infrastructure.

Platform-Agnostic Process Engineering

We systematically decouple and modernize monolithic architectures across manufacturing, finance, logistics, and retail. Our teams design high-performance, future-proof systems by transforming outdated logic into agile microservices and containerized environments.

End-to-End Migration Strategy

We deliver full-cycle modernization—from initial source code audits to final cloud deployment. We build secure API layers and integration frameworks that ensure seamless data exchange between your remaining legacy tools and new cloud-native applications.

Rigorous US & UK Compliance and Security

Our modernization processes adhere strictly to ISO 9001 and ISO 27001 standards. We mitigate data security risks during migration, ensuring your updated software architecture fully complies with regional regulations, including SOC 2 and HIPAA in the US, and UK GDPR and NIS 2 mandates in the UK.

AI-Driven Modernization & Cloud-Native Tech

We accelerate implementation timelines and improve accuracy using specialized AI/ML tools for automated code analysis, dependency mapping, and smart testing. We architect solutions built on modern cloud environments (AWS, Azure, GCP) utilizing serverless and event-driven models.

Hyper-Care and Localized Support

We guarantee business continuity with a phased migration methodology designed for zero operational disruption. With an on-the-ground presence across both the US and UK (including London, Manchester, and Birmingham), our local experts are always available for on-site audits, workshops, and post-launch optimization.

Industries We Serve

LeverX possess extensive industry expertise, enabling us to create relevant and compliant solutions for various sectors:

Our Success Stories

FUCHS: digital transformation for business processes
IT asset management solution: driving efficiency
Espresa: HR platform for enhanced employee interaction

FUCHS: digital transformation for business processes

LeverX analyzed the client’s business processes and transformed a legacy, siloed enterprise system into a scalable, cloud-native platform powered by Microsoft Azure. The modernization replaced outdated, fragmented tools with a unified solution that delivers real-time IoT data collection, secure Azure-based access management, and interactive reporting.

A mobile version of a web application for service workers provides on-the-go access to operational data and maintenance tasks. At the same time, an automated task management system — integrated seamlessly with the ERP — streamlines work orders, optimizes resource allocation, accelerates workflows, and provides an automatic reordering system. The result is a future-ready platform that boosts efficiency, enhances decision-making, and eliminates the limitations of the old system.

WHAT OUR CUSTOMERS SAY

Tony Azevedo

Chief Executive Officer, 6-8 Sports

Jenn Sparks

Director of operations, CPG Data

Tim Flaherty

Executive Vice President, CFO, Enable Injections, Inc.

Rohan Ponnekanti

Manager, Business Systems, i-PRO Americas Inc.

Caleb Thomas

Product Systems Administrator, Pilgrim's PridePilgrim's Pride

Shahaf Yaari

SAP-TM Department Manager, ZIM Integrated Shipping Services Ltd.

Eduardo Gomez

Director at Cipher Business Solutions

Don Mackenzie

SAP Practice Lead, C&A Technology LLC (CAT)

“We highly recommend LeverX as a technology partner””
The LeverX team involved in the completion of our projects demonstrated a high level of responsiveness and support by solving issues and answering questions ASAP. They were diligent and proactively addressed the challenges that arose during the development process. Our cooperation ran smoothly and professionally, and LeverX quickly provided direct and correct advice when necessary. We highly recommend LeverX as a technology partner for large and complicated development projects that also delivers continuous cooperation with the provider on new projects.
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“We are very pleased and content with our relationship with LeverX”
We are very pleased and content with our relationship with LeverX. We rely on their team for full-stack development of our platform. We respect the high technical caliber and dedication of the team assigned to our project. LeverX provided us with the scaling we needed to grow our development capabilities from early-stage POC to now a globally deployed platform in the HR Teach space.
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“They are an important part of our strategic Team and we enjoy working with them every day!”
LeverX has been our technology partner since late 2012. In the early years, I thought that they would fill a short-term gap until I could afford to hire my own technical team in the US. But they have consistently met the demands of our growing company and helped us build what we believe is our industry's best solution option. LeverX provides high quality work, so much so that our platform's reliability and accuracy has repeatedly been mentioned by our largest customer's internal vendor survey. The individuals we work with aren't just contractors, they are an important part of our strategic Team and we enjoy working with them every day!
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“LeverX has been the best development partner we’ve ever worked with!”
LeverX has been the best development partner we’ve ever worked with. The team is very responsive and the quality is very high. They are always willing to do whatever is necessary to support our development and customer support efforts. I would recommend them to anyone.
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"JBS was impressed with LeverX’s BMAX application"
After several years of successfully running multiple workflow processes through LeverX’s IPS application, JBS was excited to learn of LeverX’s BMAX application. We needed a means to govern material master data creation on a global scale, and LeverX was instrumental in the design, build, and deployment of a globally adaptable integrated IPS and BMAX master data creation process. We could not be more impressed with the outcome of this application, its user adoption, and its capabilities.
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“LeverX has extensive knowledge in the area of engineering management processes”
LeverX has extensive knowledge in the area of engineering management processes and provides flexible products and SAP solutions/add-ons that help our end users to perform their business efficiently. Their team is dedicated to deliver the right solution and always works closely with us to understand our needs and proposes solutions that meet our requirements.
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“We recommend LeverX as a reliable ERP implementation and support partner”
The SAP solution supported by the LeverX team helped us achieve the utmost process automation and optimized financial and logistics processes. The project was delivered on time. We hope that our cooperation will gain the status of a time-tested partnership. We recommend LeverX as a reliable ERP implementation and support partner.
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“A great partner that goes the extra mile to accommodate the customer/company”
A great partner that goes the extra mile to accommodate the customer/company. They can accomplish what is needed to move their business forward. No question is too much for LeverX. They’ve been a great resource for any area of SAP. What I like about LeverX is that I don’t think there is any question that is too much for them. We bounced a lot of things off them that might not appear in their wheelhouse, but a lot of times they have answers just because of their experience and knowledge. We found them to be a great resource to bounce things off and get ideas even if they might not be specific to PLM. When you are out of time and have limited resources, LeverX has your solution. LeverX is a big bang for your buck that will bring in a lot of knowledge at one time to check off all the boxes.
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“LeverX: A Pragmatic System Integrator with Extensive SuccessFactors and Process Knowledge”
LeverX is a reliable and flexible SAP system integrator with a pragmatic, can-do approach, providing vast process/technical HR IT knowledge that includes standard product offerings and custom app development.
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Choose the Right Modernization Path with LeverX

LeverX will guide you to the optimal modernization strategy by assessing your software’s complexity, risks, and potential impacts on your business.

Ideal for: Companies with stable, high-value legacy systems looking to extend functionality without disrupting underlying operations.    

Service provided: API development to enable new functionalities and easier integration with modern systems.

Encapsulation

Ideal for: Organizations needing minor code adjustments to leverage better performance and cloud capabilities.   

Service provided: Optimization of existing applications to new platforms with minimal changes, enhancing performance and reducing costs.

Replatforming

Ideal for: Enterprises that need significant improvements in their application structure for greater agility and cloud compatibility, as well as companies with a very outdated technology stack facing support and compliance challenges.

Service provided: Comprehensive code restructuring and optimization to improve maintainability and cloud readiness.

Refactoring

Ideal for: Companies facing the need to transform their entire system architecture to meet evolving business demands and incorporate new technologies.

Service provided: A complete overhaul of the system's architecture to enable new functionalities and the integration of cutting-edge technologies.

Rearchitecting

Ideal for: Organizations where existing solutions are too costly to maintain or upgrade, and a fresh start is more feasible.

Service provided: Custom development of new solutions designed to completely replace outdated systems with scalable, efficient, and modern software.

Replacing

Our Expertise and Technologies 

We utilize cutting-edge technologies and methodologies to create robust and innovative solutions. Our technical capabilities span across:
  • Modern Web Development

  • Mobile Development

  • Cloud Platforms

  • Intelligent Technologies

  • DevOps & CI/CD

  • Cybersecurity

Modern Web Development

Our Proven Legacy Enterprise Software Modernization Process

We adhere to a transparent and structured approach to modernization, ensuring your project's success:

1

Legacy system assessment & consulting

In-depth technical and business analysis of the existing legacy system, identifying its dependencies, pain points, technical debt, and business-critical processes. Evaluation of the current state, gathering requirements for the target system, risk assessment, and strategic alignment to fully understand your vision and modernization challenges.

2

Modernization strategy & roadmap development

Creating a detailed modernization project roadmap, defining the modernization approach (e.g., refactoring, replatforming, re-architecting, replacement, encapsulation). Developing the target architecture (e.g., microservices, event-driven system) and meticulously selecting the optimal technology stack for the new or modernized system.

3

Iterative development & migration

Adopting iterative development, continuous integration/delivery (CI/CD), and a flexible, responsive approach to adapt to evolving needs. Phased development of new components, parallel operation with existing systems, and managed migration of data and functionality.

4

Quality assurance, security & compliance

Implementing rigorous testing (functional, performance, security, compliance) throughout the lifecycle of the modernized system. Ensuring data integrity during migration, adhering to international standards (ISO 9001, 27001, 55001) for uncompromising quality and security of both new and integrated components.

5

Deployment & seamless integration

Ensuring smooth deployment of new or modernized solutions and robust integration with remaining existing enterprise systems (ERP, CRM, etc.) and third-party platforms. Minimizing downtime during the transition.

6

Ongoing support, optimization & decommissioning

Providing comprehensive post-launch support, continuous monitoring, proactive maintenance, and iterative evolution of the modernized solution to maximize its long-term value. Gradual decommissioning of legacy components as they are replaced.

Related Services 

We offer a comprehensive approach to digital transformation. In addition to web and mobile application development, our experts are ready to provide a wide range of services to help your business grow and evolve.