Executive Team
Jeff Dobbelaere
President and CEO
Jeff is the President and CEO of Mainline Information Systems, LLC, as well as a member of Mainline’s Board of Directors. Jeff leads Mainline’s continued transformation strategy to a high-value technology integrator that understands a varied client environment.
Jeff joined Mainline in 2002, and his extensive experience in the Information Technology field, coupled with his problem solving and leadership skills, has enabled Mainline to deliver best-of-breed IT solutions to our clients. This success is driven by our ecosystem of technology partners, our comprehensive enterprise services portfolio, and our top-notch customer service organization.
Explore our Case Studies page to discover how we collaborated with clients to overcome their business challenges.

Perry Carfagna
Chief Operating Officer
Perry rejoined Mainline in 2022 as COO, reporting to President and CEO Jeff Dobbelaere. Previously at Mainline from 2012-2017 Perry managed several strategic and growth partner relationships, directed the pricing organization, and was instrumental in bringing Converged Infrastructure solutions to the market.
Perry’s experience at Mainline combined with his leadership experience as President of a regional Value-Added Reseller in Ohio, make him uniquely qualified to help evolve Mainline’s go-to-market strategy. As COO, Perry helps direct Mainline’s go-to-market plans, leads the Company’s practice areas, and brings efficiencies and customer value to Mainline’s portfolio of solutions.
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Joe Elebash
Chief Financial Officer
Joe Elebash has more than 20 years of experience in the financial/accounting field and is currently the Chief Financial Officer for Mainline Information Systems. Joe oversees finance, information technology, and human resources for the company. Learn more about Mainline and why over 1,000 clients nationwide trust us to deliver IT solutions that enable better business results.
Prior to joining Mainline, Joe was the VP of Finance for TUI Marine, which is a division of TUI Travel, one of the world’s largest leisure travel companies. Joe also spent several years each at e-Security, as CFO, and PricewaterhouseCoopers, as an Audit Manager.
Beth Oberacker
VP Human Resources
With 25 years of Human Resources experience, Beth Oberacker joined Mainline in 2016. Beth currently serves as the VP of Human Resources and oversees the HR, Benefits and Payroll functions for the company. If you are looking to work with the best people in the industry, then a job at Mainline is for you.
Prior to joining Mainline, Beth served in similar roles with a large international staffing agency, a multi-state beer distributor, a well-known national home builder, and a Division of the State of Florida. She brings her skills to the ever-changing environment of benefits as well as the contemporary, family-friendly culture at Mainline. In addition to holding her master’s degree in HR Management, she also holds both the Senior Professional in Human Resources (SPHR) and Senior Certified Professional (SHRM-SCP) designations.
Jeff Rusk
Chief Revenue Officer
Jeff joined Mainline in 2024 as CRO, leading the sales and marketing organizations for the US 1. With 27 years of experience in the Information Technology industry, Jeff focuses on building and scaling the go-to-market infrastructure, strategy, and direction for the company.
Jeff’s core competencies include data center, cloud, security, consulting services, and managed services. His successes have been rooted in developing high-performing teams, driving revenue growth, and fostering long-term relationships with large enterprise clients.
Learn how to optimize your business with Mainline solutions.
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Brian Showman
General Counsel
As General Counsel, Brian oversees all legal functions and contracting on behalf of Mainline. His focus is comprehensive, corporate risk management while enhancing the company’s ease of doing business.
A graduate of the Florida State University College of Law, Brian joined Mainline in 2015 and has since successfully navigated the company through all legal aspects, including multiple solution provider acquisitions and Mainline’s acquisition by H.I.G. Capital. Under Brian’s leadership, Mainline has expanded its ecosystem of partners to include top-tier technology companies, enabling us to deliver solutions that drive our clients’ businesses forward.
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