NIT Services, an XentIT Company, specializes in Assessment and Authorization, Vulnerability Assessments, Continuous Monitoring, Penetration Testing, Security Policies and Procedures Development, Risk Assessments, Compliance Scanning and Monitoring, Cybersecurity Training, Contingency Planning and Incident Response for all Government and cloud environments.

Our Vision

Help our clients achieve best value and results for their business by optimally utilizing their IT systems and resources.

Our Team

Our executives carry relevant industry recognitions and honors and have decades of valuable cumulative professional experience in both commercial and government space. Our information security & compliance professionals, network professionals, programmers, project managers and program managers are well referenced industry experts, carry relevant certifications in their disciplines and have worked with clients in a number of business sectors. We strive to recruit the most qualified and experienced professionals. Our source of recruiting is primarily via referral from our expert colleagues in the industry, current & former associates and through a professional vetting process.



Tariq Alvi has 30 years of diverse experience in engineering, information technology and cybersecurity. Tariq had founded XentIT in 2006 with a mission to provide “professional services without giving up personal attention” to his clients, and acquired NIT Services in 2019 to expand services capabilities. This acquisition has enabled us to provide end-to-end cybersecurity engineering, advisory, and assessment services to our federal, state and local government entities as well as small, medium and large businesses for their on-prem and cloud systems. Tariq’s commitment to providing quality service to his clients made him go back to school and earn a MS in Cybersecurity Technology degree from University of Maryland Global Campus.

Paul Johnson is a well-rounded technical executive with experience in all facets of the IT environment. A graduate of business school, he enjoys working with business units to find solutions to problems rather than pushing the latest technology. Paul focuses on cost savings through technology and enjoys exploring new products and processes. He has a proven track record of bringing stability and consistency to IT departments and systems.

Paul has built and managed data centers, networks and call centers. He was also the owner of a successful managed services provider (MSP) in the Atlanta area, after being asked to start one by a friend.

In his free time, Paul likes to coach baseball, watch hockey and football, and travel. He is considering a run for local elected office.

Paul Johnson
Vice President, NEtwork Security & ManAged Services

Irma Flores has over 25 + years of finance and accounting experience and has many years of experience in leading companies’ operational activities. Prior to joining NIT, she was the Director of Finance and Administration at the BRG Railroad an OmniTRAX company.

Irma is a result oriented and team focused operations business leader. Irma has a proven track record of managing business operations, optimizing processes by employing effective project management and Quality Management Principals as well as managing teams.

Irma is a volunteer community leader that teaches and leads youth groups and ladies’ groups. She and husband work with many families that need ministerial counseling or have a crisis management need.

Irma Flores

Irma Flores


Amy Hargadon graduated with a Bachelor’s degree in Digital Communications at University of Baltimore. Her expertise focuses on the everchanging social media and digital marketing field. Amy is in the early stages of her career as a Digital Marketing professional Prior to joining XentIT, Amy served as the Public Information Aide at the Town of Berwyn Heights. Recently, she has revived XentIT & NIT’s LinkedIn and Twitter accounts. She is eager to grow XentIT & NIT’s online presence. Amy also has taken on business operations roles for the company. She is eager to learn more about the business, sales, and marketing. In her free time Amy enjoys sewing, and surfing at the beach.

Amy Hargadon


Shaun Powell

An image of Shaun in a white shirt and blue tie


Shaun Powell is a dedicated sales professional committed to providing exceptional customer service and support to his clients. With over 20 years of sales experience, Shaun is gifted at understanding the problems his clients face and providing them with the proper solutions to meet their needs. He is a true partner of each client he serves, building lasting business relationships that stand the test of time.

Shaun graduated from Toccoa Falls College in beautiful north Georgia. He enjoys baseball, mountain biking, hiking, and camping. He currently lives in the metro-Atlanta area with his wife, two children, and their multitude of pets.