About System One

Your Trusted Partner
Committed to Your Needs


Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives. 

Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.

Management Buyout
System One launched as an independent staffing agency with divestiture of engineering and technical practices from Hudson Highland Group.
System One Acquires Utility Partners Of America
Acquired Utility Partners of America (UPA), expanding reach in the energy industry. UPA provides project management, construction management, operations, maintenance, and professional services.
System One Acquires Link2Consult VMS
Acquired the Link2Consult technology platform, which delivers complete workforce procurement through a flexible Vendor Management System (VMS).
System One Acquires Compliance Discovery Solutions
Re-established roots in the legal market with acquisition of Compliance Discovery Solutions.
MidOcean Partners Invests In System One
MidOcean Partners made a significant investment in System One.
System One Acquires MOUNTAIN, LTD.
Acquired MOUNTAIN, LTD., a global engineering services provider specializing in the telecommunications industry.
System One Acquires Joulé
Acquired Joulé Inc. and subsidiaries to gain synergies in the Life Sciences industry. Joulé consists of multiple business lines working together for client success: scientific, clinical, and healthcare staffing, plus equipment services.
System One Acquires Precision Resource Company
Boosted energy reach with acquisition of Precision Resource Company. Precision provides engineering, project management, and technical support to the power and energy industries.
System One Acquires AECOM’s Quality Programs
Acquired Quality Programs from AECOM. Quality Programs was integrated into System One’s Quality Solutions practice to provide a full spectrum of workforce solutions and quality engineering.
System One Acquires ALTA IT Services
Significantly enhanced IT reach by acquiring ALTA IT Services, an established leader in IT staffing and consulting services for government, commercial, and non-profit enterprises in the Washington, DC metro area.
Thomas H. Lee Partners Invests In System One
Thomas H. Lee Partners, L.P. made a significant investment in System One.
System One Acquires GAP Solutions
Acquired government services company GAP Solutions. GAP delivers mission-critical outsourcing, process management, and supply chain management to their Defense and federal civilian customers.
System One Acquires TeamPeople
Acquired multimedia services firm TeamPeople to strengthen our foothold in the Creative & Digital space. TeamPeople is a trusted advisor providing multimedia, engineering, and AV consulting services to the best-known and well-respected organizations in the world.
System One Acquires TPGS
Acquired government contractor TPGS to strengthen GAP Solutions’ capabilities. TPGS provides customized mission-critical intelligence services and support with rapid response, proven talent, and exceptional service.
System One Acquires NTP Wireless
Acquired wireless telecom company NTP Wireless to reinforce the MOUNTAIN, LTD. team. NTP Wireless specializes in site acquisition services including site identification, permitting, leasing, and zoning services.
System One Acquires Transformer Repair Utility Services
Acquired Transformer Repair Utility Services (TRUS), a utilities services firm, to expand capabilities of Utility Partners of America (UPA). As part of the agreement, TRUS operates under UPA.
System One Acquires Juvo Telecom
Acquired wireless telecom company juvo Telecom to reinforce the MOUNTAIN, LTD. team. juvo Telecom is a fully-integrated wireless engineering services company.
System One Acquires Cohesion
ALTA IT Services acquired IT workforce solutions firm Cohesion, with offices in Cincinnati and Baltimore. Cohesion delivers workforce solutions and agile consulting services.
System One Acquires The Rowland Group
Acquired engineering, IT, and finance & accounting staffing firm, The Rowland Group, to expand our presence in Tulsa and Houston. The Rowland Group is a professional recruiting firm that provides a wide variety of staffing solutions.
Oaktree Capital Management Invests In System One
Oaktree Capital Management, L.P. made a significant investment in System One.
System One Acquires Syneos Health Contingent Staffing
Joulé, a System One division, enhances clinical workforce solutions capabilities by acquiring Syneos Health’s Contingent Staffing business. The acquisition cements Joulé’s clinical footprint.
System One Acquires Level 5 Consulting Engineers
MOUNTAIN, LTD., a System One division, announces acquisition of Level 5 Consulting Engineers, architecture & engineering provider. The wholly-owned subsidiary will operate as MOUNTAIN, LTD. Engineering.
GAP Solutions Acquires Quadel
GAP Solutions completes acquisition of Quadel to bolster its integrated services portfolio. Quadel to operate as GAP Solutions subsidiary and expand its government consulting efforts.
System One Acquires CVR Associates
Acquired a leading provider of housing choice voucher administration and development. CVR assists clients by providing technical assistance, strategic planning, technology solutions, and program management for affordable housing programs.
System One Acquires Dreamtek
Acquired a leading global video production company Dreamtek to strengthen our position in the Creative & Digital space. Dreamtek offers creative video production services, live and virtual event expertise, and advanced technical production knowledge.
System One Acquires RPG Resources
Acquired an environmental services company that provides turn-key solutions for the oil & gas, renewable energy, and telecom industries. RPG Resources brings years of experience in environmental compliance, UAS and data collection, and inspection services.
System One Acquires KeyLogic
Acquired an established consulting and data management leader. KeyLogic supports critical missions in the energy, commerce, and defense sectors around R&D, advanced analytics, data science, digital transformation, Agile DevSecOps, and cybersecurity.


System One has assembled a collaborative group of leaders who respond to our clients’ business challenges with strategies for success. Every member of the System One executive management team has considerable experience in building profitable organizations, optimizing operations, and managing complex technology and business initiatives.

  • Chairman and Chief Executive Officer

    Troy Gregory

    Chairman and Chief Executive Officer

    Troy Gregory

    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.

  • President and Chief Operating Officer

    Greg Lignelli

    President and Chief Operating Officer

    Greg Lignelli

    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.

  • Chief Financial Officer

    Daniel J. Moran

    Chief Financial Officer

    Daniel J. Moran

    Daniel Moran is the Chief Financial Officer of System One, where he is responsible for all financial functions of the corporation. He has extensive expertise in finance, controllership, risk management, executing business strategies, streamlining processes, and increasing margins.

    Daniel has a strong track record of creating short- and long-term business plans and successfully implementing financial systems, directing shared services, and leading merger and acquisition integrations. Daniel played a key role in the management buyout of System One from Hudson Highland Group in early 2008, developing the financial team and infrastructure necessary to achieve desired profit objectives and maintain the integrity of all financial resources.

    Daniel’s most recent position was the North American Controller at Hudson Highland Group, a publicly-traded professional staffing, outsourcing, and talent management firm, where he oversaw the accounting and finance functions. Key accomplishments there included implementing a dedicated client services function to facilitate efficient transactions, and improving customer service and directing PeopleSoft stabilization and optimization programs.

    Earlier in his career, Daniel held various executive and corporate positions in both the public and private sectors, including Corporate Director of Accounting & Finance, Corporate Controller, and Internal Audit Positions. His broad-based skills position him exceptionally well to develop a financial platform for continued growth at System One.

    Daniel is a Certified Public Accountant. A lifelong resident of Western Pennsylvania, he is a graduate from Mercyhurst College, where he obtained his B.A. in Accounting.

  • Chief Information Officer

    Lisa Biondi

    Chief Information Officer

    Lisa Biondi

    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.

  • Chief Human Resources Officer

    Susan Burgess Tencza

    Chief Human Resources Officer

    Susan Burgess Tencza

    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.