15+ Years of Excellence in IT Solutions
XentIT operates as a seamless extension of our clients’ delivery and operations teams. Our philosophy is rooted in delivering high-performance, customer-aligned solutions that respect the realities of compliance, governance, risk, security, and mission demands.
Our Experienced Experts
Virtual Extension
We function as a seamless extension of our client’s service and delivery organization.
Tailored Solutions
We understand the complexities of our client’s business model and deliver solutions that fit their needs.
High-Value Delivery
Providing high-value, high-performance, and high-quality business information solutions.
Expert Team
Our associates develop their skills to help our clients protect their most valuable assets.
Meet Our Expert Leaders
Our team brings decades of combined experience in cybersecurity, cloud computing, and enterprise IT management.
Tariq Alvi
Founder & Chief Executive Officer
Tariq Alvi is an accomplished cybersecurity and technology executive with over 30 years of combined experience in engineering, enterprise systems, cybersecurity, and federal contracting. After beginning his career in engineering and ERP technologies, Tariq developed deep expertise in access control, risk management, and cybersecurity, implementing secure enterprise environments for large public and private organizations. In 2006, he founded XentIT to deliver mission-focused cybersecurity, cloud, and managed services to commercial enterprises and government clients across the United States and Canada.
Under Tariq’s leadership, XentIT has evolved into a recognized provider of cybersecurity operations, cloud modernization, digital transformation, and regulatory compliance services, supporting more than 1,000 customers across enterprise, federal, state, and local government. Tariq holds a Master’s in Cybersecurity Technology and remains actively engaged in shaping XentIT’s capabilities in line with federal frameworks, compliance mandates, and emerging cyber-resilience requirements.
Khalid Alvi
Executive Vice President
Khalid Alvi is a mission-driven federal technology leader with 25+ years of experience across multiple U.S. government agencies, including HHS, DoD, and the Department of Commerce. His expertise spans IT portfolio and investment management, federal cloud operations, large program execution, acquisition strategy, contract management, and cybersecurity governance. Khalid has overseen high-value federal modernization programs supporting critical mission systems, achieving measurable improvements in system performance, operational efficiency, security, and compliance.
Prior to joining XentIT, Khalid directed cloud and IT operations supporting HealthCare.gov, managing enterprise cloud resources (AWS & Azure), multi-year IT portfolios, Tier-1 helpdesks, and multi-million-dollar contracts. He led large-scale cloud migration initiatives, software asset management programs, and enterprise IT modernization efforts delivering strategic mission outcomes for federal constituents. He holds advanced degrees in Technology Management and Business Administration, PMP and AWS certifications, and numerous federal awards recognizing innovation and service delivery excellence.
Paul Johnson
Vice President
Paul Johnson is an experienced IT operations and managed services leader with deep domain expertise in infrastructure engineering, network security, cloud enablement, and enterprise service delivery. Paul has spent his career building stable, secure, and cost-efficient technology environments for private-sector clients, government entities, and managed service providers. His technical leadership spans data center operations, network design, multi-cloud deployments, and secure enterprise IT modernization.
Before joining XentIT, Paul built and scaled managed services businesses supporting enterprise and public sector clients, providing 24×7 infrastructure support, cybersecurity services, and business continuity solutions. His approach emphasizes measurable operational outcomes, cost optimization, and proactive cybersecurity posture management. At XentIT, Paul oversees managed services strategy, next-generation infrastructure initiatives, and security-aligned service delivery for enterprise and government customers.
David Twilley
Director of Sales
David Twilley is an accomplished cybersecurity sales executive with over 20 years of experience driving enterprise growth across North America. He leads our sales strategy for Managed Cybersecurity Services, Advisory, and reselling of industry leading IT & Cybersecurity products, helping organizations reduce risk and improve operational resilience.
Throughout his career, David has partnered with Fortune 500 and mid-market organizations to design comprehensive security frameworks spanning threat detection, incident response, and compliance. His extensive background includes senior leadership roles at Defy Security, Skyhigh Security, and Trend Micro, where he developed integrated cybersecurity programs through strategic partnerships.
Ernesto Fuller
Client Director & Senior Staff Engineer
Ernesto Fuller is the embodiment of a vigilant protector, with a career dedicated to defending the nation’s most critical networks. His journey began as a network security specialist in the U.S. Air Force, instilling in him a discipline and mission-focused approach that he carried into pivotal roles at the FBI, US Marshal’s Service, and the Federal Bureau of Prisons.
With over 25 years of experience, Ernesto has a profound understanding of the tactics used to breach government systems and the countermeasures needed to stop them. He is our clients’ trusted advisor on the front lines, known for his ability to rapidly diagnose vulnerabilities, implement resilient security architectures, and provide the expert guidance needed to maintain a constant state of readiness against evolving threats.
Maria Thirumalareddy
Lead Technologist
Maria Thirumalareddy is a DevSecOps and cloud security engineer with over 5 years of professional experience supporting secure cloud operations, automation, and compliance-driven workloads. She has engineered cloud security stacks across AWS and Azure, implemented CI/CD and configuration management tooling, and contributed to security enablement for regulated enterprise and public sector clients. Maria holds technical certifications including AWS Solutions Architect and Azure Administrator, and has training in cybersecurity platforms, endpoint protection, and vulnerability management.
Her experience spans cloud security engineering, DevSecOps automation, identity and access management, monitoring, container security, and infrastructure-as-code, aligned to modern software delivery and compliance frameworks. Maria’s academic background includes advanced degrees in engineering, computer technology, and information systems security. At XentIT, she supports cloud modernization and cybersecurity initiatives with a focus on scalable automation, secure deployment practices, and mission continuity for government and enterprise clients.
What We Do
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Round the Clock Support
Security First
We put a strong focus on the needs of your business to figure out solutions that best fits your demand and deliver it.
Challenges are just opportunities in disguise.
Join Our Team!
Be part of a team that’s shaping the future of cybersecurity. We’re always looking for talented individuals who share our passion for protecting what matters most.
Cloud Security Stack
Get a copy of our comprehensive Healthcare Cloud Security Stack documentation. Learn how we protect sensitive healthcare data in the cloud.