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John Shaeffer

Principal Consultant


Areas Of Expertise

Mr. Shaeffer is an expert in designing solutions that address the challenges of today’s ever-changing technology landscape and new security requirements.  He has extensive experience with SCADA, EMS, GMS, ADMS/OMS, GIS, and Historian systems as well as several IT platforms (server/client architecture, virtualization, hyper-converged infrastructure, cloud, etc.).  Prior to joining ESTA, Mr. Shaeffer worked for OSI as a Solutions Architect where he managed a team of engineers responsible for designing such systems and provided technical governance of projects, proposals and contracts.  His expertise includes:

  • IT Architecture Design

  • System Patching Procedures


  • APIs, Middleware, Front End Processor Protocols

  • System Integration

  • RFP and Software Selection

  • Contract Negotiations

  • Situational Awareness Projects

  • Hardware Replacement

  • OT/OS Software Upgrades

  • Road-mapping and Budget Planning


Years of Experience

14 years

Countries of Work Experience

USA, Canada, India, Vietnam



B.S. / Electrical Engineering / University of Southern California, Los Angeles, CA (2007)




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