Senior Systems Engineer

ManTech seeks a motivated, career and customer-oriented Senior Systems Engineer to join our team in Herndon, VA

The Senior Systems Engineer with a strong background in Citrix and NetScaler technologies to join our team in Herndon, VA. The successful candidate will play a key role in designing, implementing, and maintaining enterprise-level systems that support critical applications and user environments.

Responsibilities include but are not limited to:

• Manage and optimize Citrix Virtual Apps and Desktops, ensuring high performance and availability.

• Configure, deploy, and maintain NetScaler appliances (SDX, MPX, VPX) and Citrix Gateway solutions, including GSLB.

• Monitor and troubleshoot user experiences and NetScaler operations.

• Collaborate with network teams to design and implement NetScaler solutions with VLANs, subnetting, and LACP.

• Automate workflows, develop NetScaler policies, and create custom HTML pages for enhanced functionality.

• Document system configurations and support upgrades to maintain operational excellence.

Minimum Qualifications:

• Bachelor’s degree in computer science or related field with 11+ years of experience in the Information Technology field

• Experience with NetScaler appliances, including configuration, deployment, and management.

• Extensive hands-on experience with Citrix technologies such as Virtual Apps and Desktops (formerly XenApp/XenDesktop).

• Strong knowledge of load balancing, application delivery, and secure remote access using NetScaler.

• Experience monitoring and optimizing Citrix environments for performance and user experience.

• Familiarity with Citrix Workspace and related services.

Preferred Qualifications:

• Proficiency with SDX, MPX, and VPX appliances.

• Experience architecting and designing Citrix Gateway solutions, including GSLB configurations.

• Advanced knowledge of NetScaler Console for monitoring, troubleshooting, and management with a proficiency in NetScaler policy creation, including responder and rewrite policies.

• Strong experience monitoring and troubleshooting XenDesktop user experiences in enterprise environments.

• Familiarity with Citrix Virtual Applications and Desktops on platforms such as Hyper-V, Nutanix, VMware, and with tools and strategies for enhancing user experiences in virtualized environments.

• Experience designing and installing NetScalers in collaboration with network teams and an advanced understanding of VLANs, subnetting, and LACP (Link Aggregation Control Protocol).

• Proficiency in scripting and automation for Citrix and NetScaler environments and an expertise in identifying and resolving Citrix-related issues to ensure optimal end-user performance.

Clearance Requirements:

• An active TS/SCI with Polygraph

Physical Requirements:

• Use hands to operate a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.

• The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

• Constantly positions self to maintain computers in the lab, including under the desks and in the server closet