Cybersecurity Engineer (ENG03)

Company: Castalia Systems
Location: Largo
Posted on: April 2, 2026

Job Description:

Job Type: Full- Time Workplace Type : Onsite in Largo, FL Clearance: Active TS/SCI clearance 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 currently searching for a Cybersecurity Engineer to work within the Security Engineering domain and as a part of the larger enterprise engineering effort, you will operate within a custom, air-gapped, Department of Defense IT network daily to perform advanced support and direct deployment of new capabilities at a sustained rate. Roles and Responsibilities A qualified candidate will perform the following duties and responsibilities, but are not limited to: Demonstrate your ability to create and present materials to convey concepts and ideas to a wide range of audience Work primarily onsite in a closed area environment with occasionally opportunity to work offsite Demonstrate your ability to create, follow and update to system documentation, schematics and operational guides and procedures Demonstrate your ability to interface with other teams to help define, determine and implement cyber risk posture, cyber risk mitigation and information assurance throughout the enterprise IT service portfolio on a sustained level Required Qualifications: Typically requires a degree in Science, Technology, Engineering or Mathematics (STEM) and minimum 5 years prior relevant experience or an Advanced Degree in a related field and minimum 3 years of experience or in absence of a degree, 8 years of relevant experience Solid background in Systems Administration using Linux and Windows desktop and server operating systems (Windows 11/Server 2022/RHEL) Active DoD 8570 IAT Level II certification e.g. CISSP and/or Security, with the ability to maintain Proficient knowledge of Enterprise Identity Management applications and design including LDAP (e.g. Active Directory) and PKI Experience with common VMware products (vSphere, vCenter, ESXi) and overall virtualization implementations Desired Qualifications: Broad understanding of traditional, and current on-prem enterprise IT systems and technologies and its impacts to the security of: - Identification, Credential and Access Management (ICAM) for those systems. - secure enterprise messaging - Enterprise Logging Ingest, - Cyber Situational Awareness and protection, - Endpoint Detection and Response. Experience with various computing hardware and software platforms, including servers, workstations, supporting various COTS software applications Experience maintaining Window servers and troubleshooting software applications Experience with custom software applications Experience with enterprise firewalls, including knowledge of firewall policies/rulesets Understanding of basic network engineering fundamentals, including: OSI layers, IP addressing, sub-netting, TCP/IP stack, VLANs, well-known ports and protocols, etc. Knowledge and experience leading or contributing to integration efforts involving either Cybersecurity, Risk Management Framework, or Information Assurance Knowledge of how to scan hardware and software for compliance and vulnerabilities utilizing industry tools such as Assured Compliance Assessment System (ACAS) Understanding of configuring and troubleshooting anti-virus applications, such as Trellix Sound foundation in Data Management and Configuration Management principles, process, and concepts Knowledge of Zero Trust principles Experience configuring and troubleshooting SIEM tools (e.g. Splunk) Experience working with command-line interfaces and scripting (PowerShell, Bash, etc.) Experience with Agile project methodologies, and Jira workflows. Physical Requirements/Work Environment Normal office environment Travel Up to 10% of travel may be required 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 can 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 very 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 people involved in the operations of the company are prohibited from engaging in this type of conduct.

Keywords: Castalia Systems, Brandon , Cybersecurity Engineer (ENG03), IT / Software / Systems , Largo, Florida