About Us

Company background

who we are

Data Systems Integration Group is ISO 9001 certified in our Design, Development, Implementation and Maintenance of Software Products and Applications. We are an Ohio certified Minority-Owned Business, currently employing more than 225 Technical Professional resources. DSIG has been providing professional Information Technology (IT) consulting services and software solutions to government agencies and Fortune 500 small to large corporations for more than 15 years.

We provide Managed Services for our clients by providing the skilled technical staff with the industry knowledge and technical expertise to assist our clients with addressing their Management Operations needs and running their business in an efficient, productive, and cost-effective manner.

In addition to services, our software for the Healthcare Industry supports Government and Commercial entities by providing comprehensive and easy-to-use Commercial Off-the-Shelf (COTS) cloud solutions for Electronic Health Records (EHR) and Laboratory Information Management Systems (LIMS). DSIG also specializes in providing our clients with high-end technical professional staffing.

Our staff are highly skilled Professional Technical Resources. DSIG has been providing IT Technical Staff and full lifecycle projects for more than 15 State of Ohio Cabinet Agencies, as well as commercial clients in and around Ohio. Examples of the commercial companies that we work with include Deloitte Consulting, IBM, Microsoft Consulting Services, CGI Technologies and Solutions, Conduent State Healthcare, Nationwide Insurance, American Electric Power (AEP), and Designer Brands/Designer Shoe Warehouse.

The services we provide add value to our clients, as we work with them to understand their business and requirements, match our skillset and software solution to their needs, and work diligently to establish a true partnership with each client. Through these partnerships, DSIG helps our clients achieve their business, technical, schedule, and budgetary goals. Our history in Ohio and other states demonstrates our capability, capacity, and experience to support Ohio’s Deliverables Based Information Technology Services efforts, with owners who are fully engaged and provide leadership in the company’s day-to-day activities.

Vision, Mission and Values

we are A source for quality

Our goal is to be a trusted partner to our customers and be a source for quality IT professional staff and innovative IT staffing solutions.

At DSIG, We Pledge

To treat our employees and customers with dignity and respect

DSIG empowers, encourages and supports our people so they make decisions that will help us achieve our mission to be one of the best IT Staffing and Project Management firms in the U.S.

To exceed our clients’ expectations

DSIG recognizes that consistency is critical to the achievement of our mission. We always act with a sense of urgency, respond quickly to client needs and meet our commitments to provide only the best and most professional IT staffing and solutions available.

To be committed to continuous improvement

DSIG strives to enhance the value of our resources by providing training and development initiatives. We strive for excellence in everything we do. We seek to encourage innovative thinking that will enhance our ability to reduce labor costs and enable us to find talent for those hard-to-fill positions.

To demonstrate a passion for customer service

In doing so, DSIG strives to become the partner of choice to every client and to provide cost-effective, value-added solutions, treating each client as if they were our only client.

Executive Team

Our Professionals

DSIG was founded in 2006 by Chad Chalumalla and Maddy Narahari. Both of these founders have more than 30 years of combined, real-world experience in software development, project management and IT systems and infrastructure. Chad and Maddy are hands-on and work to ensure that DSIG has the necessary IT resources skill sets and that the IT solutions remain current. They incorporate best practices in all they do.


Chandrashekar (Chad) Chalumalla

President & Chief Executive Officer (CEO)

Chandrashekar (Chad) Chalumalla is the co-founder and Chief Executive Officer of DSIG. His vision has been simple and consistent throughout the years—it is all about doing what is best for the customers. Mr. Chalumalla is responsible for making DSIG’s major corporate decisions, managing the company's financial resources, and acting as the main point of communication between the company owners and executives. Mr. Chalumalla has over 20 years of IT experience. Before co-founding DSIG, he had a distinguished career in the government and private sector. Mr. Chalumalla earned his Master’s degree in Computer Science from Franklin University in Columbus, Ohio.


Madhukar (Maddy) Narahari

Sr. Vice President & Chief Information Officer (CIO)

Madhukar (Maddy) Narahari is the Chief Information Officer for DSIG.  He works closely with the CEO, VP of Operations and other DSIG Executives to establish business objectives and determine which technologies DSIG needs to achieve our goals and support our clients.  He ensures DSIG staff is up to date on new IT software and sets the technical direction for DSIG’s IT solutions implemented internally and with our clients. Maddy has more than twenty years of hands-on experience in IT.  He also holds a degree in Information Technology. In addition, he has more than ten years of experience with Laboratory Information Management Systems (LIMS) and more than five years of direct experience with Electronic Health Record (EHR) software systems.

Nola M. Haug

Sr. Vice President Contracts / Strategic Advisor

Nola Haug brings extensive expertise to her dual roles as DSIG’s Executive Contracts Manager and Strategic Advisor. With a comprehensive career spanning over 20 years, including more than two decades as a Contracts Officer, Ms. Haug has a deep-seated foundation in the field. She has spent over a decade as an executive at CGI Technologies and Solutions, Inc., focusing on public sector account management, complemented by another ten years in various federal government roles specializing in systems analysis, design, delivery management, and program and vendor management of large, complex IT contracts. Ms. Haug is well-versed in the intricacies of contract negotiation and compliance. At DSIG, she leads the contracts team in negotiating, reviewing, and finalizing agreements, ensuring adherence to legal standards and company policies while also mitigating risks and resolving disputes. Her strategic support ensures that project teams have the right skills and resources from initiation through implementation, surpassing client expectations. Additionally, she provides invaluable advice, coaching, and mentoring to DSIG executives and managers and maintains relationships with key business partners. Ms. Haug holds a bachelor’s degree in business administration with a minor in accounting.


Vanaja Baddam

Vice President, Software Specialist & Subject Matter Expert

Vanaja Baddam is the Software Specialist & Subject Matter Expert for DSIG. Vanaja has nearly 10 years of experience working directly in the Healthcare field. In addition, she has more than 12 years as a Technical Architect, supporting more than twenty 20 clients and approximately 10 platforms in the Healthcare industry. Vanaja’s primary focus has been with DSIG’s RevolutionDX Electronic Laboratory Information Management Systems (eLIMS) and Pathlogix. She develops and maintains client relationships and works with DSIG’s internal staff and client staff to define functional and technical business requirements for implementing DSIG’s healthcare solutions. She utilizes her experience as a technical architect to work with clients to manage, train, configure, design, develop, test and deploy software systems. She implements suggested improvements, conversions, and long-term maintenance and support.


Shane Collier

Sr. Vice President of Operations

Shane Collier, the Senior Vice President of Operations at DSIG, expertly manages the company's operational processes to enhance efficiency and service quality. With over 20 years of experience in the IT sector and a PMP certification, Mr. Collier has honed his skills in maintaining strong partner relationships and developing technical strategies that align with DSIG's strategic goals. He plays a crucial role in operational risk management, serving as the primary contact for significant issues and risks. Mr. Collier's leadership in operational oversight ensures that service delivery is optimized and partnerships are robustly maintained. He applies rigorous project management disciplines across all client engagements, ensuring that projects are delivered on time, within budget, and to the satisfaction of clients while adhering to industry standards. Mr. Collier's responsibility also extends to monitoring project budgets and optimizing resource allocation, thereby maximizing profitability and operational efficiency. Holding a Bachelor of Science degree in Management of Computer Information Systems, Mr. Collier's deep understanding of the integration of technology and business operations drives his success in managing multimillion-dollar budgets and leading initiatives that significantly enhance client engagement and satisfaction.


Lori A. Wildes

Vice President

Lori Wildes is a Vice President at DSIG, overseeing its public sector business. Ms. Wildes primarily supports the State of Ohio Government agencies. Prior to joining DSIG, Ms. Wildes held positions as an Account Manager with multiple companies within the State and Local government and commercial business. In addition, she launched the State of Ohio’s managed services contract to all state agencies, counties, municipalities, and higher education institutions. Her industry experience, along with her staffing knowledge, has enabled Ms. Wildes to be an expert in the field, providing highly skilled, qualified candidates to DSIG’s clients. Ms. Wildes has an Associate’s degree in Business.


Manoj Kumar

Senior Recruiting Manager

Manoj Kumar is a Senior Recruiting Manager for DSIG. In his role, he focuses on Management Operations, Talent Acquisitions and Management, Client and Employee Relations and Engagement, Organizational Development Interventions, Learning and Development, Retentions, Training, and Mentoring with hands-on experience in recruiting. Mr. Kumar has a good understanding of the whole lifecycle process in the recruitment of consultants, their direct interactions with the client, and expertise in screening and evaluating candidates. Mr. Kumar obtained his Bachelor of Science degree in Computer Science from Osmania University.

Alisha Gharbi

Human Resources Manager

Alisha Gharbi is the Human Resources Manager for DSIG. She oversees employee onboarding, compensation and benefits, training and development, and employee relations. Alisha is also involved in the recruitment and selection processes, ensuring that DSIG attracts and retains top talent. Additionally, she handles employee relations, fostering a positive work environment and addressing any challenges that arise. Her strategic approach to human resources supports DSIG’s operational goals and enhances employee satisfaction and organizational effectiveness.


Awards and Recognition


Fast 50 Award

Certified MBE