Integrative Systems

Integrative Systems provides IT services focused on modernizing and supporting legacy business systems. The company has experience with IBM iSeries/AS400 and .NET environments, along with IT infrastructure, ERP, business intelligence, and back-office services.

The company was founded in 2010 by Rajesh Rajan, who serves as CEO. Its India operations are based in Pune through Integrative Systems India Private Limited, which was registered in 2009.

Integrative Systems works with businesses across North America, including SMBs and Fortune 500 companies. Its listed industries include manufacturing, retail, logistics, banking and finance, transportation, construction, consumer goods, education, and healthcare.

The company states that it is SOC 2 and ISO certified and was included in the 2025 Inc. 5000 list.

2010 — Founded
~236 — Employees (third-party estimate)
~$36M — Revenue (third-party estimate)
2025 — Inc. 5000 honoree

What Integrative Systems offers its clients

IBM i / AS400 modernization: Modernization, GUI development, and ongoing support for IBM i and iSeries systems.
.NET and Microsoft solutions: Custom software development using Microsoft's technology stack.
ERP consulting: Support for JD Edwards, BPCS, and Monarch ERP systems.
IT infrastructure: Managed IT services, hardware and system software support, Azure, Hyper-V, and SQL Server services.
Power BI and business intelligence: Power BI implementation, consulting, reporting, and data visualization.
Back-office services: Accounts payable and receivable, AR collections, and customer support.

How Integrative Systems outshines the competition

Integrative Systems has a long-standing focus on IBM iSeries and AS400 systems, alongside more recent Microsoft and cloud technologies. This makes legacy modernization one of its main areas of specialization.

The company also provides IT infrastructure, ERP, business intelligence, and back-office services, giving clients the option to use the same provider for several technology and support functions.

Its website lists SOC 2 and ISO certifications, and the company was named to the 2025 Inc. 5000 list.

Integrative Systems company structure

Integrative Systems was founded in 2010 by Rajesh Rajan, who serves as Founder and CEO.

The company's leadership team includes:

Rajesh Rajan — Founder & CEO
Mike Stein — COO
Jay Amond — CFO
Peter Grigg — Director of Microsoft Technology
Bret Hon — Sr. Engagement Manager (IBM i)

The company is headquartered in Lombard, Illinois, with delivery operations in Pune, India through Integrative Systems India Private Limited.