Signature Science, LLC
  • - TX-Austin
  • Austin, TX, USA
  • Full Time

Position Purpose:   

The Systems Administrator serves to assist and support planning, design, installation, implementation, and maintenance of all IT infrastructure services.


Essential Duties and Responsibilities:


  • Configure, operate, and maintain server and network systems to satisfy requirements defined in RMF ICD-703, NISPOM, NIST SP 800-171, CMMC 2.0, and the DHS 4300 Sensitive Systems Handbook.
  • Maintain Exchange email systems, to include the analysis of message flow, third party connections, servers, and site design.
  • Maintain Active Directory Domain Services, DNS, NPS, RADIUS, and DHCP services.
  • Anticipate, mitigate, and communicate any potential impact of changes to ensure the availability of corporate IT services.
  • Maintain Teams enterprise services to include Voice capabilities.
  • Manage and maintain Microsoft cloud-based systems (Security/Defender/Compliance/etc.).
  • Maintain desktop and server Microsoft updates and Third-Party Updates via Microsoft Configuration Manager (formerly ECM/SCCM).
  • Manage and maintain corporate Mobile Device Management via Intune. This includes updating compliance policies as needed, app management, and corporately owned mobile devices.
  • Manage Microsoft Entra (Azure AD) to include application management with SSO configurations.
  • Manage, configure, and maintain Jira Service Management. Be able to configure workflows, forms, multiple projects.
  • Manage SharePoint Administration duties. Create, maintain, and configure SharePoint sites.
  • Manage and maintain Microsoft Sensitivity labels and retention labels.
  • Develop test plans and procudures for any new IT infrastructure or systems implementations.
  • Document all changes and solutions to problems in a centralized knowledge base.
  • Support the Cybersecurity and Client Support Teams as a subject matter expert in modern Microsoft Windows Platforms (Windows 10 and Windows Server 2012+).

Required Knowledge, Skills & Abilities:


  • Experience configuring and maintaining IT systems required to meet RMF ICD-703, NIST SP 800-53, NIST SP 800-171, CMMC 2.0, DHS 4300 Sensitive Systems Handbook, and NISPOM requirements.
  • In-depth knowledge of Windows Core Services (e.g., DNS, LDAP, SAML, Kerberos, DHCP, AD DS, AD CA, PKI/Certificates, PAM, GSSAPI, SSH, FTP, IIS, HTTPD, etc.).
  • Experience managing and maintaining Exchange Online.
  • Experience managing and maintaining the Microsoft 365 E5 Suite.
  • Proficiency in written and oral communication to allow for efficient and effective exchanges with end users and team members to produce quality written products.
  • High level of attention to detail.
  • Ability to manage multiple tasks simultaneously.



  • Bachelors Degree in Information Technology, Computer Science, or a related field is preferred. Four year's professional experience working in an IT-related role may be substituted in lieu of a degree.
  • A minimum of six years' experience working in an IT related role. If professional experience is utilized to satisfy the education requirement, a total of at least ten years' experience is required.



Certificates and Licenses:


Preferred: Certifications identified in DoD 8570.01-M Appendix 3 at the IAT or IAM Level 2 or higher

                   For a list of approved certifications, visit



This position requires that the candidate be willing and able to complete a successful background screening for a security clearance. Candidates with an active security clearance will receive preference.


Supervisory Responsibilities:




Working Conditions/ Equipment:


Office environment; must be flexible to work nights and weekends to meet corporate deadlines; must be able to lift/carry IT equipment on a daily/weekly basis; occasional contact with lab materials; ability to sit for long durations in front of a computer.



The above job description is not intended to be an all-inclusive list of duties and standards of the position.  Incumbents will follow any other instructions, and perform any other related duties, as assigned by their supervisor.



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