We are a highly strategic, agile small company, delivering cutting edge cybersecurity and systems integration services to the US National Security market. Our organization affords excellent visibility, internal mobility and leadership opportunities, as well as competitive compensation and robust benefits to include profit sharing and a generous 401K plan.

We have an immediate need for a Principal Systems Engineer to work in Chantilly, VA. We seek a motivated, self-starter with experience in securing information systems to join a team of engineers to architect, design, develop, and implement secure solutions.

CLEARANCE REQUIRED: Active Top Secret US Government clearance

All Tau Six employees will need to meet the requirements set forth in Executive Order 14042 and the Safer Federal Workforce Task Force Guidance requiring all covered contractor personnel to be fully vaccinated against COVID-19.


  • Designing, implementing, and documenting customer solutions in a wide variety of application and/or service areas, including workstation baselines, server baselines, VDI solutions, client/server applications, 3-tier web applications, and new technologies as identified by the customer
  • Solutions include developing full ITIL Service Design Packages, including documenting requirements, creating SLAs, developing Capacity Management plans, IT Service Continuity Plans, and other areas composing ITIL service design
  • Designing and deploying enterprise level disaster recovery solutions
  • Designing and deploying enterprise class SAN deployments and backup infrastructures, including Data-at-Rest
  • Designing and deploying new applications and services to the infrastructure
  • Implement Code First solutions using Infrastructure as Code to describe and to document solutions
  • Systems integration using automated integrating technologies including system deployment leveraging a CI/CD pipeline
  • Develop automated tests using provided testing framework
  • Assisting Service Operations teams diagnose and resolve the toughest performance, security, and/or technical challenges related to desktop support and deployments
  • Developing client install packages for across-the-wire system deployments and system upgrades
  • Writing implementation and design documents describing how security features are implemented
  • Participating in a Change Management processes
  • Providing IT Systems and Applications Engineering support for a large distributed IT infrastructure Working within the Applications Management division.
  • Performing requirements analysis, design, and integration for complex software application environments and collaboration infrastructures.
  • Providing direction and guidance to less experienced systems engineers.
  • Responsibility for investigating and resolving operational problems in conjunction with other engineering and technical personnel.
  • Providing IT Systems Engineering support on a wide range of technologies, including: Microsoft Exchange, Microsoft SharePoint, Oracle databases, Microsoft SQL Server, Service Now, Altiris, Microsoft Office, Internet Explorer, Adobe Acrobat, HBSS, Splunk, customer line-of-business applications, VMware vCenter, Horizon View, Site Recovery Manager, HPAC Secure Printing, HP Blade Servers, HP SANs, Certificate Services, DHCP, DNS, Active Directory, Group Policies and Microsoft Windows Operating Systems.
  • Other tasks may include requirements specification, performance modeling, end-to-end functional analysis, cost estimation, and joint application design.
  • Working on project teams responsible for engineering and packaging releases to integrate within the customer's production IT environment.
  • Participate in technology evaluation and reengineering teams to support strategy-definition and continuous process improvement activities
  • Develop, enhance, and maintain automation of cloud enablement tools
  • Recognize and resolve all business issues and impact
  • Participate in the design, implementation and management of workload automation initiatives
  • Adhere to firm Change Management, Problem Management policies and familiarity with ITIL or other formalized IT operations foundations
  • Providing direction and guidance to less experienced systems engineers.
  • Responsibility for investigating and resolving operational problems in conjunction with other engineering and technical personnel.
  • Participating in processes throughout all phases of ITIL Service Lifecycle, including submitting Change Requests


  • Bachelor’s Degree and 10+ years of relevant IT experience
  • 5+ years working with cloud platforms
  • 5+ years of experience as an enterprise systems administrator in a client or server environment, including deployment automation tools
  • Systems integration experience a must
  • ITIL v3.0 or Foundation Certifications highly desired
  • CISSP, Security+ CE or DoD 8570 Certification required (IAT Level II required / IAT Level III desired)
  • Certifications such as AWS Certified Solutions Architect, MCSE: Cloud Platform and Infrastructure, VMware VCP7 – CMA are highly desired (Computing domain certification is required)
  • Extensive knowledge of Windows based systems including Hardware, software, networking and storage
  • Proficiency in PowerShell and/or other scripting languages
  • Willingness to work after normal duty hours (nights and weekends) as needed.

Security Requirements:

  • Current active Top Secret clearance required.