System Engineer III (Linux/Windows)

Prosync•Annapolis Junction, MD

About The Position

ProSync Technology Group, LLC (ProSync) is an award-winning, SDVOSB Defense Contracting company with a strong military heritage and a record of excellence in supporting the Department of Defense and the Intelligence Community. If you have prior military service or government contracting experience, are proud to serve and support our nation, and want to help support ProSync's mission to "Define and Redefine the State of Possible,” please apply today! ProSync is seeking a System Engineer with strong experience in system administration, automation, security compliance, and enterprise infrastructure support. The engineer will work on a small, mission‑focused team responsible for maintaining system integrity, performance, and security across critical client/server environments. This role requires hands‑on administration of Windows and Linux systems, support for networking devices, and familiarity with containerization and Kubernetes. The ideal candidate is a strong communicator who can interact frequently with users and customers, escalate issues appropriately, and ensure systems remain secure, compliant, and operational.

Requirements

A Bachelor’s degree in a Qualified Engineering Field or a related discipline from an accredited college or university plus six (6) years of experience in system engineering (OR) An Associate's Degree, a High School Diploma or GED plus ten (10) years of general system engineering experience (OR) A Master’s degree in a Qualified Engineering Field or a related discipline from an accredited college or university plus four (4) years of systems engineering experience (OR) A PhD in a Qualified Engineering Field or a related discipline from an accredited college or university plus two (2) years of systems engineering experience.
Strong System Engineering and System Administration.
Strong knowledge of Security Compliance.
Strong knowledge of networking devices. (Cisco, Juniper, Arista).
System Administration skills for Windows/Linux.
Familiarity with Kubernetes/containerization.
Experience with Active Directory, LDAP, Centrify, Group Policy, Network Services.
Strong knowledge of security protocols and patching.
Communication and escalation of issues to management.
A Top Secret/SCI with Polygraph is required.

Responsibilities

Provide end‑to‑end system engineering and administration for Windows and Linux environments supporting mission‑critical operations.
Maintain strict security compliance across systems, including patching, protocol enforcement, configuration validation, and audit readiness.
Develop or support automation workflows to streamline system administration, configuration management, and compliance tasks.
Work with Cisco, Juniper, and Arista devices to ensure reliable connectivity, proper configuration, and secure operation.
Support containerized environments and Kubernetes‑based deployments as part of modernization and operational workflows.
Administer and troubleshoot Active Directory, LDAP, Centrify, Group Policy, and related identity and access management services.
Ensure systems adhere to required security protocols, perform regular patching, and maintain secure configurations.
Work closely with users and customers to resolve issues, gather requirements, and support mission operations.
Communicate and escalate technical issues to management in a timely and effective manner.