Your Mission is Our Mission


Raul Sierra, our President and CEO, founded SierTeK in 2007 with the goal of providing the highest quality services to various Federal agencies. His vision was to partner with agencies and deliver services to ensure their success. 

Company Values





Family and Personal Wellbeing 



Our Corporate Team

Our Corporate Headquarters is located in Beavercreek, Ohio.

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Raul Sierra


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Erin Bektas

Proposal & Marketing Coordinator

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Elizabeth Matthews

Director, Business Development

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Abby Barcus

HR Generalist

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Nate Mitchell

Senior Program Manager

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James Dalton

Program Manager

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Mackanzie Langford

Program Administrative Assistant

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Jordan Helman

Business Development Analyst


What Makes Siertek Different

  • Our Corporate Team is accessible and responsive

  • We are family-oriented

  • We focus on continuous improvement

  • We hire the best talent 

  • We give back to our communities

  • We have top-notch customer service

© SIERTEK 2021


Our Customers

  • US Air Force 315th Training Squadron 

  • US Air Force Aerospace Maintenance & Regeneration Group 

  • US Air Force Defense Acquisition University

  • US Air Force Research Laboratory (AFRL)

  • US Air Force Security Assistance and Cooperation Directorate (AFSAC)

  • US Air Force Life Cycle Management Center (AFLCMC)

  • US Air Force Security Assistance and Cooperation Directorate, Saudi Arabian Branch (AFSAC/WFMAB)

  • US Air Force Life Cycle Management Center (AFLCMC/HIAM)

  • US Air Force Global Command & Control System, Data Services Program Management Office (GSCC-AF PMO)

  • US Air Force Phillips Research Site

  • US Navy F-35 Joint Program Office

Our Stats


Team Members


Current Contracts



SierTeK-Peerless JV

  • Program Management 

  • Systems Engineering

  • Cybersecurity and Cyber Defense

  • Aerospace

  • Research and Development

  • Test and Evaluation

  • Modeling and Simulation

  • Enterprise Information Technology

  • Medical Research and Human Performance

  • Intelligence, Surveillance and Reconnaissance

  • Training and Training Systems

SierTeK teamed up with Peerless to form a joint venture specializing in the following:

Business Meeting

Two companies.

One solution.