Arxis Partner Bios

Arxis Technology, Inc

Arxis Partner Bios Arxis Technology Spotlight

Arxis Partner Bios

David Cieslak | Bob C. Gaby

David Cieslak CPA, CITP, GSEC

David M. Cieslak

David Cieslak is a Principal with Arxis Technology, Inc., a computer consulting firm with offices in Southern California, Chicago and Phoenix.  He specializes in micro-computer accounting systems, information security, the Windows operating environment, systems development and project management.

He is a frequent speaker for the California Society of Certified Public Accountants (CalCPA), the American Institute of Certified Public Accountants (AICPA) and other state accounting societies.  He is a Sage ACCPAC ERP Certified Consultant, a Windows Certified Professional and holds the GIAC Security Essentials Certification (GSEC).

Mr. Cieslak currently serves on the CalCPA Board of Directors and Sage Mid-market ERP Business Partner Advisory Council.  He is the past Chair of the AICPA IT Executive Committee and past president of the California CPA Education Foundation.  He is an active participant with the CalCPA State Technology Committee and Westside Micro-computer Users Discussion Group.   He is past chairman of the CalCPA State Technology Committee, former member of the AICPA Information Technology Practices Sub-Committee and previously served on the Information Technology Alliance board of directors.  He is a member of various other AICPA and CalCPA planning committees for courses, conferences and computer shows.


  • Accounting Today Top 100 Most Influential People in Accounting – 2001, 2002, 2005 – 2012
  • CPA Technology Advisor Top 25 Thought Leader 2011-13
  • Accounting Today Technology Pacesetter – 1998, 2000-12
  • Sage President’s Circle – 2005, 2009, 2011
  • Accounting Technology Killer VAR - 2001
  • San Fernando Valley Business Journal/Trusted Advisor Trail Blazer Award - 2012
  • San Fernando Valley Business Journal Top 25 CPAs in greater San Fernando Valley – 2002


  • 1982 - University of California, Los Angeles, Bachelor of Arts in Economics


  • Certified Public Accountant
  • Certified Information Technology Professional
  • GIAC Security Essentials Certified
  • Microsoft Certified Professional
  • Certified Consultant - Sage 300 ERP & Sage 300 ERP Plus

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Bob C. Gaby CPA, CITP, MCP

Bob C. Gaby

Robert (Bob) Gaby, CPA, has over 30 years of technology consulting and public accounting experience. He is a founder and principal in Arxis Technology, Inc. (ATI), a management and technology consulting firm located in Simi Valley, California that specializes in selecting implementing and supporting mid-market accounting and business management solutions for manufacturing, distribution and various service based industries.   He is also an active partner in Arxis Financial, Inc., a full service accounting firm affiliated with ATI.

Bob received his Bachelor of Science degree in Business Administration with emphasis in Accounting and Finance from California State University at Northridge in 1981.  He is a Certified Public Accountant, Certified Information Technology Professional, and Certified Global Management Accountant.  He and his firm are resellers, developers and consultants for several top-selling accounting systems including Sage 100, 300 and 500, SAP Business ByDesign and Intacct; Sage CRM, SugarCRM, SAP Business Objects and Adaptive Planning.  ATI has qualified for Accounting Technology magazine’s “VAR 100” for the last eight years, has been recognized by Accounting Today as a “Technology Pacesetter” for the last nine years and was recently voted as one of the 20 Best Places to Work by the San Fernando Valley Business Journal.

His areas of specialization include:

  • Business consulting and advisory services
  • Business process re-engineering
  • Mid-market ERP software selection and implementation
  • Project management
  • Sage 500 and SAP Business ByDesign

Bob has presented before the California Society of Certified Public Accountants, the American Institute of Certified Public Accountants, the Information Technology Alliance (ITA), the Society of California Accountants, the Institute of Management Accountants, state computer shows, local user groups and colleges, and is an associate instructor for K-2 Enterprises.  He has written and taught courses on a variety of technology topics.  Bob has served on the Board of Directors for the ITA, is the past chair of the CSCPA State Technology Committee and former Program and Chapter Chairman of the Los Angeles CSCPA Westside Technology Users Group.  He has also served as a member of various other CSCPA and ITA planning committees for courses, conferences and computer shows. 

Bob lives in Santa Clarita, California with his wife and three children.  In his spare time he enjoys skiing, camping, hiking and oenology. He currently serves in on boards and in an advisory capacity to several community and civic organizations. 

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David Cieslak Speaker Packet

David Cieslak Speaker Packet

Bob Gaby Speaker PacketBob Gaby Speaker Packet

Arxis Corporate Office
Arxis Corporate Office

Contact information:

Phone: 866-624-2600
Sage Software Authorized Partner Intacct Adaptive Insights Inforamtion Technology Alliance (ITA)
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