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As Chairman and Chief Executive Officer of System One, Troy Gregory holds responsibility for the strategic direction and expansion of a diverse portfolio of staffing, managed services, and customized solutions. Troy applies more than 25 years of experience in both the public and private sectors leading successful, growth-oriented businesses delivering specialized expertise.

Troy is a former winner of the Ernst and Young Entrepreneur of the Year award. System One is on its fourth private equity partner. All of these partnerships were led by Troy and his executive team. Today System One does $1.5 billion in revenue out of 60 locations across the US, UK, and Canada.

Greg Lignelli is the President and Chief Operating Officer of System One, a leader in outsourced services and workforce solutions. Greg was part of a management team buyout in February 2008 from Hudson Highland Group to form System One. In his role, Greg has led many of the corporate initiatives and implementations surrounding managed staffing relationships, vendor management systems, operational tools, performance tracking systems, pre-employment testing, and training. Greg works out of the Corporate Headquarters based in Pittsburgh, PA. Previously, he was the Executive Vice President of Hudson’s Energy, Scientific, and Managed Staffing practice group. Greg has over ten years of experience in business analysis, operations, and sales within the Energy, Scientific, and Engineering sectors.

He previously served as the Vice President of Financial Operations for the Energy, Scientific, and Managed Staffing and the Engineering, Aerospace & Defense practice groups at Hudson. His responsibilities included budgeting, forecasting, performance and financial analysis, collections, and support of the overall operations.

Greg has fulfilled multiple roles during his tenure with the company, distinguishing himself through his understanding of client relationships, financial operations, and national account development. He began his career with one of the firm’s legacy companies, SPEC Group Holdings, Inc., as Corporate Business Analyst for the Mergers and Acquisition Department, then moved into a National Business Development role.

Greg holds a Bachelor of Science degree in Business Administration from Duquesne University and attended leadership training with London Business School.

Scott Barnett is the Chief Financial Officer of System One, where he is responsible for all financial functions of the organization. He has extensive expertise in strategic financial planning, operational finance, mergers and acquisitions, risk management, and executing business strategies.

Scott brings over 20 years of financial leadership experience to his role. He began his career at PwC and most recently served for over a decade at Polyconcept, a billion + dollar, international, private equity-backed company.

Originally from Southern California, Scott has called Pittsburgh home for more than 10 years. He is a Certified Public Accountant and holds a B.A. in Business Economics from the University of California, Santa Barbara, as well as an M.B.A. from the University of Southern California.

Lisa Biondi is the Chief Information Officer for System One, where she is responsible for corporate technology strategy, enterprise IT solutions, infrastructure, cybersecurity, acquisition integration, and technology support. She has been with System One since its inception in 2008.

Lisa started her career as an electrical engineer and has worked in technology for over 30 years, mostly in the staffing industry.  Prior to becoming System One’s CIO, Lisa held a variety of information technology leadership positions with both public and private professional staffing firms.

Lisa is a graduate of the University of Pittsburgh with a Master of Science degree in Electrical Engineering.

When she is not immersed in the technology world, Lisa is a member of the University of Pittsburgh’s Alumni-In-Residence program where she gives career guidance presentations and mentors students.

Susan Burgess Tencza is the Chief Human Resources Officer for System One. Susan oversees corporate HR programs to attract, develop, and retain world-class talent to support System One’s success. Her team’s responsibilities include employee relations, benefits & compensation, retention & rewards programs, organizational development, talent management, employment law & compliance, and acquisition integration.

A certified Senior Professional in Human Resources, Susan has a wealth of leadership experience across diverse industries and organizations. She has demonstrated a strong track record of strengthening operational and HR practices through compliance, technology, and policy development.

Prior to joining System One, Susan served as HR Director for Education Management Corporation. Earlier, she served as HR Director for multi-national firms Context Web and CGI Technologies and Solutions.

Susan holds a Bachelor of Arts degree in Political Science from Allegheny College and is active in the Society for Human Resources Management.

Cami Davis, General Counsel, honed her law expertise primarily in the area of employment law, advising clients and representing them in negotiations, litigation, and before administrative agencies. Prior to joining System One, Cami was a partner at Clark Hill PLC in its labor and employment group, where she worked with System One on employment law matters.

In 2018 and with fifteen years of experience behind her, Cami transitioned to the corporate environment, joining the System One team. As General Counsel, Cami provides strategic advice to System One and its divisions, including advising senior management on labor, employment, and litigation matters; developing company policies and procedures; engaging in contract review and negotiation; and leading System One’s legal integration team with respect to mergers and acquisitions.

Cami is a graduate of Dickinson College, where she majored in American Studies, and also of the University of Pittsburgh School of Law, where she received her Juris Doctorate.

Mary Beth Gapinski is the Chief Accounting Officer of System One, where she specializes in financial planning & analysis, budgeting, financial technology, tax, and technical accounting principles. Mary Beth brings over 16 years of expertise in strategic financial and accounting operations.

As a forward-thinking professional, Mary Beth has demonstrated her leadership by implementing impactful corporate accounting processes and leveraging internal and external partnerships to achieve corporate goals. She oversees the general ledger and reporting areas, as well as payroll, receivables and payables functions across global locations and multiple legal entities. She has played a pivotal role in the success of the organizations she has served.

With a proven track record of executing large-scale projects in complex and fast-paced environments, Mary Beth is recognized for her ability to navigate stressful scenarios with numerous critical priorities. Her accomplishments include driving efficiency through the implementation of financial processes and integration of 21+ acquisitions, as well as supporting System One’s sale three times between private equity firms.

Mary Beth is a Certified Public Accountant (CPA) registered with the Pennsylvania State Board of Accountancy. She holds Bachelor of Science degrees in Accounting and Economics from the University of Pittsburgh. Prior to her joining System One, Mary Beth began her career in public accounting with a local Pittsburgh firm where System One was one of her clients.

As an Executive Vice President for System One, Mark Fenske has committed his nearly 40-year career to the firm and the evolution of its legacy companies. Mark’s career began as a contract employee performing quality assurance oversight support to customers within the fossil power generation industry. He applied his technical background in nondestructive testing, inspection, quality assurance, and quality control to expand the company’s credentials to meet regulatory codes and standards necessary to provide specialized services to manufacturing, construction, petrochemical, and nuclear power generation markets. Mark’s emphasis on the value of promoting the nuclear industry culture, sustaining long-term customer relationships, and workforce development and training initiatives substantially contributed to the firm’s initial organic growth, becoming an attractive acquisition target for TMP Worldwide, the parent company of Monster.com, and later Hudson Highland Group.

In 2008, Mark was invited to become part of the executive ownership and management team for the newly formed System One. Mark’s responsibilities include strategic business initiatives and operations for the company’s services across the energy and engineering business sectors. He continues to lead efforts to leverage our expertise in the design and delivery of customized workforce solutions for specialized professional, technical, and skilled workers, most recently expanding into federal government laboratory networks operated by the US DOE and DOD. Mark’s team is also developing System One’s quality programs to meet the requirements of international codes and standards, including ISO 9001, ISO 17025, ISO 9712, and DNV GL, strategically positioning the organization to expand our outsourced services within the renewable energy sector.

As the Director of Marketing for System One, Rich Weede leads the marketing and communications efforts and is responsible for driving the planning, development, and execution of the firm’s initiatives. His primary focus is supporting revenue generation by promoting the firm’s outsourced services and workforce solutions while simultaneously increasing new client generation.

Rich is in his “second career” after serving over 20 years as a US Marine Corps infantry officer. In his civilian career, he has over 15 years of business and marketing experience with unique expertise in analytics and branding, and works cross-functionally with recruiting, sales, and shared services teams to improve operational best practices.

Rich previously led the marketing department at Kforce and is a graduate of the Virginia Military Institute with a Bachelor of Arts degree in Economics.

Rachel Peters, CTS, is the Executive Vice President of TeamPeople.

Rachel joined TeamPeople in its start-up phase in 2006, creating innovative programs and services fueling years of double-digit growth. It’s currently the 5th largest marketing/creative staffing firm in the US.

She leads the global workforce services and key client relationships for in-house creative studios, virtual and live event production, and audio-visual operations. TeamPeople’s focus is creating brilliant work, identifying and developing unique and diverse talent, building outstanding client partnerships, and customizing workflows as differentiators in the marketplace. It serves over 100 active clients annually, dozens within the Fortune 500.

A music lover and native Midwesterner, Rachel previously led video content production teams, overseeing television and radio production and programming. She’s a dedicated advocate for Be the Match, the National Marrow Donor Program, and the Children’s Heart Foundation. She resides in the DC area with her family. Rachel holds a B.S. in Communications Media from Indiana University of Pennsylvania.

Marc Zamsky is the Chief Executive Officer of System One’s Legal organization, Cimplifi, where has been architecting eDiscovery solutions and legal review services since 1996. In his role as CEO, Cimplifi, Marc brings a strong record of strategic planning, organic business growth, and operational efficiency. He guides Cimplifi’s strategic direction and initiatives to deliver the highest standards of quality and customer service. Marc is a champion for advancing innovative approaches for client cost control and data management, including implementation of advanced analytics and workflows for corporate legal departments and their outside counsel.

Prior to joining Cimplifi, Marc was a founding member, partner, and shareholder at a nationally recognized eDiscovery company and has served in executive leadership roles for several other industry leaders. During his career, he has worked with most of the Fortune 500 companies and the majority of the AmLaw 200 law firms. Marc practiced law as a commercial litigation attorney in Philadelphia from 1992 to 1996 and is a frequent author and speaker. He earned his BA from Penn State University and received his J.D. cum laude from Temple Law School, where he served as a member of the Law Review and Moot Court team.

As President of ALTA IT Services, John Hayes leads business strategy and execution across commercial and federal sectors. John’s strengths as a leader are bringing processes and people together to aid ALTA in meeting growth objectives. His 25-year career in IT staffing extends across business strategies, sales and recruiting development, information technology, and organizational development.

John is a graduate of the University of North Carolina Greensboro, with a bachelor’s degree in psychology. His career began as a Manufacturer’s Representative for Rowe Furniture and Thomasville Furniture Industries. In 1998, he joined SM Consulting, a small business headquartered in Baltimore, MD, as a Business Development Manager. After 5 years, he moved into management as Director of Business Development. He was instrumental in growing the company from $1.8 million to over $80 million before its sale to SAIC, where he acted as Division Manager. His most recent role was Vice President of Profiles, a marketing and creative staffing company, also in Baltimore, where he was responsible for the company’s overall growth.

April Metivier is the President of System One’s Telecommunications organization, Mountain Ltd. Based in the Portland, Maine area, she has propelled the organization to national leadership in engineering solutions and project management within the telecommunications industry.

Having joined Mountain Ltd. in 2000, April’s journey from technical recruiter to president has been marked by significant contributions to the organization’s growth and recognition. Her leadership has guided the company through acquisitions, continuous revenue growth, and prestigious accolades, including six consecutive years as one of the Best Places to Work. April’s commitment to quality extends beyond Mountain Ltd. as she actively serves telecommunications and staffing industry organizations, receiving accolades such as the “Special Service Award” from the Telephone Association of New England. She has also served as the President of the Board of the Northern New England Association of Personnel Services for two terms.

A graduate of Emory University with a double major in Psychology and Spanish, April Metivier combines academic excellence with hands-on industry experience, solidifying her role as a key leader in the telecommunications sector.

Michael Sousa is the President of System One’s Life Sciences organization, Joulé, where he focuses his efforts on its growth, culture, and strategic vision. His leadership philosophy is rooted in delivering solutions and creating a flawless customer service experience for clients, consultants, and his team. Mike firmly believes that an organization committed to principles, core values, and fundamentals allows for its members to embrace ingenuity and deliver at the highest performance level.

Prior to joining Joulé, Mike spent 5 years as the President of Fahrenheit IT, a leading technology staffing and recruiting company based out of Denver, CO. Fifteen years prior, he helped lead Tech USA from a start-up organization to one of the top 10 percent of recruiting firms in the country. He opened several offices for Tech USA while serving in multiple roles, ultimately as the Executive Vice President of its IT division.

Throughout his career, Mike has been highly awarded, earning President’s Club over 15 times as both a sales rep and executive leader. He holds a Bachelor of Arts degree from Villanova University.

Diane Pairel is the President for System One’s Government division, GAP Solutions. Diane oversees the operations and guides the vision for strategic growth across five major federal markets. She focuses the business on successful contract execution and expanding capabilities to support federal customer missions. She led the company to achieve the prestigious Top Workplaces Award from the Washington Post in 2021.