Legacy systems are a hindrance to our growth and an impediment to connecting with new technology. As we look toward the future, we will continue to rely on legacy systems, increasing the risk when it comes to scaling our products and launching new features and solutions.
Finding the right partner for modernization can minimize these risks and help you make a seamless transition to a scalable architecture. To help you with vendor selection, we’ve completed the list of top legacy systems modernization companies in the USA for 2026. We’ve compiled it by partnering with an experienced B2B consultant and drawing on trusted sources such as Clutch, GoodFirms, Techreviewer, and verified industry rankings.
If you are looking to update your software, consider working with one of these legacy system modernization companies:
- Cleveroad
- Icreon
- IBM Consulting
- Cognizant
- EPAM Systems
- Globant
- Perficient
These companies were selected based on proven modernization experience, strong engineering capabilities, verified reviews, and measurable business results.
How to Choose the Right Modernization Partner
Legacy system modernization is a strategic decision that directly impacts business continuity, scalability, and long-term growth. Choosing the right partner is not just about technical execution. it’s about finding a vendor who understands your business goals and can align modernization efforts with measurable outcomes.
To make an informed decision, consider the following factors:
Relevant Domain Experience
Look for vendors who have worked with systems similar to yours — whether it’s ERP, EHR, banking platforms, or custom enterprise solutions. Experience in your industry ensures a better understanding of compliance requirements, data structures, and business workflows.
Clear Modernization Strategy
A reliable partner should be able to clearly explain which modernization approach fits your case:
- Rehosting (lift-and-shift) for quick cloud migration
- Refactoring to improve performance without full rebuild
- Re-architecting for long-term scalability using microservices A strong vendor will justify their approach based on your system’s condition and business goals.
Cloud and Integration Expertise
Modern systems rely heavily on cloud infrastructure and seamless integrations. Ensure the vendor has hands-on experience with AWS, Azure, or GCP and can build API-driven architectures that connect your ecosystem efficiently.
Compliance and Security Capabilities
If you operate in regulated industries like healthcare or finance, your modernization partner must understand standards such as HIPAA, GDPR, or SOC 2. Security should be embedded into every stage of modernization, including data migration and system redesign.
Engineering Strength and Delivery Model
Evaluate the vendor’s technical capabilities, team structure, and engagement models. Whether you need a dedicated team, full-cycle development, or staff augmentation, flexibility is key to adapting to changing project needs.
Proven Results and Client Feedback
Verified reviews on platforms like Clutch, GoodFirms, or Techreviewer can provide insights into real client experiences. Focus on vendors who demonstrate measurable business outcomes such as reduced technical debt, improved performance, or faster time-to-market.
Choosing the right modernization partner means balancing technical expertise with business alignment. The companies listed below stand out because they consistently deliver both — helping organizations modernize legacy systems while driving tangible business value.
Good Legacy Systems Modernization Companies in the USA
Before diving into the list, it’s important to understand that each company brings a different approach to legacy system modernization. Some focus on large-scale enterprise transformation, while others provide flexible and cost-efficient solutions for mid-sized businesses. The vendors below were selected based on their proven expertise in modernization and ability to deliver measurable business outcomes across various industries.
Cleveroad
Founded in: 2011Headquarters: Tallinn, Estonia (serving US clients)Hourly Rate: $50–$99/hrIndustry Expertise: Healthcare, Fintech, Logistics, RetailReviews: 70+ reviews on Clutch, average rating 4.9/5Website: https://www.cleveroad.com
Cleveroad specializes in modernizing legacy systems for middle-market businesses,fast-growing organizations, and large enterprises. Their teams collaborate with clients who have monolithic applications and on-premises systems with scalability limitations. Cleveroad utilize a variety of techniques, including rehosting and microservices-based re-architecture, depending on the system’s state. Their engineers leverages AWS, Azure, and GCP; builds API-first architectures; and provides secure data migration.
Companies seeking reliable legacy systems modernization services often choose Cleveroad for its ability to combine cloud migration and architecture redesign into a single process. The company delivers microservices and data transformation solutions while meeting HIPAA and GDPR requirements.
- Engagement models: end-to-end development, dedicated teams, staff augmentation.
- Key differentiators: strong balance between cost and engineering quality.
- Business impact: reduced technical debt and improved scalability.
Icreon
Founded in: 2000Headquarters: New York, USAHourly Rate: $100–$149/hrIndustry Expertise: Retail, Manufacturing, Financial ServicesReviews: ~40+ reviews, ~4.7 ratingWebsite: https://www.icreon.com
Icreon provides modernization solutions for customer-facing systems as well as ecommerce solutions. The modernisation of ERP and ecommerce using API-first and/or composable architectures within their respective domains, with modern infrastructure built on AWS/Azure for scale. Icreon uses headless and microservice architectures, integrating and distributing multiple business systems into an all-in-one digital ecosystem, thereby enabling successful and enduring digital transformations.
- Engagement models: consulting and implementation
- Key differentiators: strong focus on customer experience
- Business impact: improved platform performance and customer engagement
IBM Consulting
Founded in: 1911Headquarters: Armonk, New York, USAHourly Rate: $150–$300+/hrIndustry Expertise: Finance, Government, HealthcareWebsite: https://www.ibm.com/consulting
IBM Consulting provides a wide range of transformation services for complex, mission-critical enterprise systems, including modernising mainframe and legacy banking systems. Hybrid Cloud Strategy and Microservice Transformation are all part of how the company will modernise existing COBOL-based systems and integrate them with new cloud architectures.
IBM has the knowledge and experience to deliver enterprise-level architecture designs to modernise legacy systems, along with DevOps automation capabilities and enterprise-level security solutions.
- Engagement models: enterprise consulting and transformation programs
- Key differentiators: deep expertise in large-scale systems
- Business impact: secure and scalable modernization of mission-critical platforms
Cognizant
Founded in: 1994Headquarters: New Jersey, USAHourly Rate: $50–$150/hrIndustry Expertise: Healthcare, Finance, RetailWebsite: https://www.cognizant.com
Cognizant is widely recognized as a leading provider of large enterprise modernization programs. From core banking systems to healthcare systems to Enterprise Resource Planning (ERP) applications, Cognizant uses cloud migration, microservices, data integration, DevOps pipeline implementation, and data platform development to achieve its goals. The teams at Cognizant have also played a role in establishing the security frameworks required for regulated industries.
- Engagement models: consulting and managed services
- Key differentiators: global delivery with strong engineering capacity
- Business impact: reduced operational cost and improved system flexibility
EPAM Systems
Founded in: 1993Headquarters: Pennsylvania, USAHourly Rate: $100–$200/hrIndustry Expertise: Finance, Healthcare, RetailWebsite: https://www.epam.com
As a company focused on engineering the modernization of high-load environments, EPAM is committed to re-architecting legacy applications into cloud-native architectures using microservices and current DevOps practices. They have expertise in optimising performance, updating or modernising data, and designing an architecture that results in a scalable system.
- Engagement model: long-term engineering partnership
- Key differentiator: strong technical depth and architecture expertise
- Business impact: faster releases and improved system reliability
Globant
Founded in: 2003Headquarters: Buenos Aires (strong US presence)Hourly Rate: $100–$200/hrIndustry Expertise: Media, Retail, FinanceWebsite: https://www.globant.com
With a focus on modernizing digital platforms, Globant is committed to providing great user experiences. They modernize media platforms and systems for eCommerce, along with developing customer-facing applications using cloud-native and composable architectures. In addition, Globant’s teams use a combination of engineering and UX design to develop scalable, user-friendly platforms.
- Engagement model: consulting, design, and development
- Key differentiator: product-focused and UX-driven approach
- Business impact: improved customer experience and system scalability
Perficient
Founded in: 1997Headquarters: Missouri, USAHourly Rate: $100–$200/hrIndustry Expertise: Healthcare, Finance, RetailWebsite: https://www.perficient.com
Perficient is a company dedicated to upgrading modern corporate systems, including enterprise software products like ERP and CRM systems, by providing high-level consulting services for cloud migration and performing Business System Integration. Their expertise is primarily in major enterprise application platforms, including but not limited to Adobe Experience Cloud, Salesforce, and SAP.
- Engagement model: consulting-led implementation
- Key differentiator: strong platform expertise
- Business impact: improved operational efficiency and system integration
Final Thoughts
Companies looking to grow and remain competitive rely heavily on modernizing legacy systems; therefore, this remains among their top priorities. Using sources like Clutch, GoodFirms, and Techreviewer to create a list of potential partners will offer insight into who may be a fit for your company.
All listed companies offer unique advantages: enterprise companies focus specifically on transformative efforts within enterprises, while other mid-sized companies provide more flexibility and cost efficiency.
Now it is time to move forward. Take the companies on your shortlist and analyze how they plan to address your system difficulties. A good partner will help you reduce expenses and create a system in order to meet the demands of tomorrow’s world.