NorthHill Technology Resources has a need for an a Senior Systems Engineer - Citrix to support a Federal Program in Sterling, VA. This is a direct-hire role with our client, a fast-growing Federal Integrator. An active TS/SCI Clearance and CI Polygraph is required. We are looking for a Platform or Infrastructure Systems Engineer (Senior) experienced in configuring, deploying, and maintaining infrastructure tools and COTS applications as Infrastucture as Code (IaC) and Applications as Code (AaC) to join our visible technical program driving the Model Based Systems Engineering (MBSE) cloud platform that supports collection, management and analysis of digital engineering information in an architecture that provides seamless digital thread and enables tool interoperability, including data structures suitable for AI applications. This program delivers engineering services for Linux and Windows cloud-based infrastructure as well as sophisticated enterprise computing infrastructure including end-point devices, Cloud services, virtualized applications, and storage systems. Enterprise Computing Engineering services include modern application technology including containerized solutions with orchestrated workflows. This position has a primary focus on leading the design, deployment, and optimization of an enterprise Citrix Virtual Desktop Infrastructure (VDI) environment. This role will be instrumental in delivering secure, scalable, and high-performance virtual desktop solutions to support our customer’s digital workplace strategy. Our platform uses a mix of Open Source, Government-off-the-Shelf (GOTS) and Commercial off-the-Shelf (COTS) software and targets cloud-native constructs. The environment offers a secure-by-default configuration, implementing an Infrastructure-as-Code approach, and governance policies. We follow a mostly Agile workflow and adhere to DevSecOps principles. We value fast iteration and a customer-oriented approach while being mindful about security. This is a fast paced, challenging, and career rewarding experience to recruit and develop top talent and solutions on one of the most complex and high-profile programs within the government customer community. Responsibilities: Design and implement Citrix Virtual Apps and Desktops (CVAD) infrastructure in a 100% Cloud environment Deploy and configure Citrix Delivery Controllers, StoreFront, NetScaler/ADC, and supporting components Implement Citrix Provisioning Services (PVS) or Machine Creation Services (MCS) for desktop image management Manage and maintain Citrix infrastructure including Virtual Delivery Agents (VDAs), hypervisors, and storage systems Optimize VDI performance through monitoring, capacity planning, and resource allocation Configure and manage user profiles using FSLogix Troubleshoot complex technical issues across the VDI stack Provide platform and infrastructure technical services and technical expertise in systems, technical infrastructure, tools, modeling, external interfaces, and other technical areas Complete complex design, configuration and deployment of platform infrastructure and applications in a cloud-based environment ensuring performant environments Maintain COTS applications in a cloud-based environment Work with internal engineering resources as well as customer end-users to design and enhance the user interfaces for supported applications, maintaining responsive designs that accommodate challenging technical and functional requirements Support operations functions, including root cause identification, remediation and documentation (e.g., user guides, ‘how to’ guides, infrastructure diagrams) Work closely with clients and cross-functional departments on technical issues including software system troubleshooting and maintenance and to communicate project statuses Prepare comprehensive test plans, test new features, services, and fix bugs Configure IdAM, Active Directory, LDAP resources with platform and applications Prepare technical presentations for government and senior leadership Work effectively in a team environment Work across infrastructure that contains both Linux and Windows Communicate effectively with technical and non-technical, management and customer both written and verbally Utilize robust troubleshooting skills Instill and apply solid engineering rigor, to include configuration management, testing Develop/engineer as part of an Agile scrum team Required Education, Experience, & Skills: We are actively seeking candidates with a minimum of 10 years' relevant experience. Bachelor’s or master’s degree in a STEM field is required. Specific skills include the following: Possess a minimum of Active TS/SCI w/ CI Poly (FS Poly works too) At a minimum, meet DoDD 8140 requirements (Security+ CE Certification) Expertise working with Linux platforms and COTS applications in Linux cloud environments 5+ years of hands-on experience with Citrix Virtual Apps and Desktops Expert knowledge of Citrix architecture, components, and deployment methodologies Strong experience with hypervisor platforms (VMware vSphere, Microsoft Hyper-V, or Citrix Hypervisor) Proficiency with Citrix NetScaler/ADC configuration and management Deep understanding of Windows Server administration and Active Directory Ability to demonstrate solid engineering rigor Expert troubleshooting and solutioning skills, including investigating log files to discover root-cause for challenges Experience with Cloud architecture and system design Experience architecting or integrating with workflow, case or ticketing, or automation platforms such as ServiceNow or custom-built systems Knowledge of IDAM requirements and technologies including Active Directory, SAML, OpenLDAP, OAuth 2.0, and/or OIDC Demonstrated experience with system testing and validation Strong documentation skills Experience and comfort with DevOps tooling (Ansible, Terraform, Jenkins, GitLab) Familiarity with Containerized Development environments (Rancher, Kubernetes) Excellent written and verbal communication skills; ability to clearly and succinctly describe complex issues Preferred Education, Experience, & Skills: Citrix Certified Professional – Virtualization (CCP-V) or higher Experience with Model-Based Systems Engineering (MBSE) Experience with Cloud solution optimization Experience configuring and instrumenting visualization tools (Grafana, Splunk) Experience with ServiceNow Familiarity with customer system security requirements and processes Integration of virtualized applications and application streaming or layering techniques Assist with leading and overseeing a total system perspective including technical understanding of relationships, dependencies and requirements of cloud services, infrastructure and security domains Experience with DevOps testing Experience integrating complex systems using APIs, message queues, streaming platforms, and ETL pipelines Other Cloud experience (Azure, Google, Oracle, IBM)