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PKI Security Administrator

Castalia Systems
paid holidays, 401(k)
United States, Virginia, Falls Church
Aug 07, 2025

Work Type: Remote with the ability to travel to Falls Church, VA or Morrisville, NC as required by client

Job Type: Full-Time

Clearance: Public Trust Eligible

Must be a U.S. Citizen

Benefits: Medical, dental, and vision coverage, 401k matching, generous PTO, paid holidays, professional training opportunities, and even pet insurance to ensure your furry friends are cared for too.

Job Summary

Castalia Systems is seeking a Threat Analyst to perform cybersecurity tasks in support of the client.

Roles and Responsibilities

A qualified candidate will perform the following duties and responsibilities, but are not limited to:



  • Perform certificate operational duties, customer support, reporting and documentation.
  • Supervise PKI team, develop requirements for projects for complex to extremely complex programs; and provide strategic and expert advice and technical guidance, to program and project staff.
  • Provide guidance and training to key stakeholders on PKI lifecycle, processes and procedures. This individual also provides detailed analysis, evaluation and recommendations for improvements, optimization development, and/or maintenance efforts for client-specific or mission critical challenges/issues.
  • Provide support for automating certificates with Venafi, with the knowledge of moving towards AI to support automation.
  • Provide customer support for all of USPS applications / services using certificates.


Required Qualifications



  • A Bachelor's degree in computers or other IT, Security related major; or equivalent experience.
  • A minimum of 8 years or more of relevant experience.
  • A solid understanding of REST API Integration, Simple Certificate Enrollment Protocol (SCEP), and MS AD Auto-Enrollment.
  • Understanding of some of the following technologies: VCERT, Portable GIT, Ansible and Visual Studio Code.
  • Understanding of PowerShell scripting.
  • A solid understanding of Public Key Infrastructure (PKI).
  • Infrastructure experience with one or more in any combination of the following: IT Sys Admin, Server Admin, Networking, Active Directory/LDAP, Unix/Linux or Virtualization and Access control administration.
  • Strong communication skills in working with IT customers, developers and system administrators.
  • Experience with certificate management tools (ideally Venafi, Microsoft CA and HSM).
  • Experience troubleshooting digital certificate issues, with the ability to move towards AI/Automation.


Desired



  • Experience with ServiceNow or other Change/Incident/Problem management ticketing technology.
  • PKI experience including hands on experience with:

    • Certificate Authority Administration.
    • Certificate Enrollment Web Service & Policy Web Service.
    • Active Directory Certificate Services (ADCS) monitoring.
    • IT system administration experience (systems management, networks, firewalls) in an enterprise environment.
    • Infrastructure IT (Systems Administration, Network Administration Windows/Linux OS, Network Administration, Active Directory and/or Virtualization).


  • Experience with user directory technologies for authentication (e.g., LDAP, Active Directory).
  • Experience with Microsoft Windows Server configuration, deployment, and troubleshooting.
  • Experience with Unix and Linux configuration and troubleshooting.
  • Experience with technologies that use TLS/SSL encryption (e.g., F5, Netscaler, IIS, Apache, WebLogic, WebSphere, etc.).
  • Demonstrated proficiency with server virtualization technologies (VMWare, HyperV).
  • Database administration (MSSQL) experience.


Desired Training: A+, NET+, SEC+, nCSE, Venafi Security Admin, certified encryption engineer, CCENT, CCNA.

Physical Requirements/Work Environment



  • Normal office environment.
  • Remote with the ability to travel to Falls Church, VA or Morrisville, NC as required by client.


Travel



  • Must be willing to travel 0-25% of the time.


Company Description

Castalia Systems is a proven business partner providing mission critical solutions to the Federal Government. We provide cutting edge solutions from Securing and Managing Data to Systems Engineering and Development. Castalia Systems is a pioneer in Artificial Intelligence Design and Application.

With our vast knowledge of our customers' needs and relevant technology, our team is able to bring successful solutions to every mission. We are one-upping our competitors by providing premium IT solutions and platforms with cutting-edge technology so it's so evident when you compare us with anyone.

Disclaimer

Castalia Systems is an equal employment opportunity and affirmative action employer and strives to comply with all applicable laws prohibiting discrimination based on race, color, creed, sex, sexual orientation, age, national origin, or ancestry, physical or mental disability, veteran status, marital status, HIV-positive status, as well as any other category protected by federal, state, or local laws. All such discrimination is unlawful, and all persons involved in the operations of the company are prohibited from engaging in this type of conduct.

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