Sr. Systems Engineer (Citrix) - TS/SCI w/CI Poly required

Location: Chantilly, VA 20151
Clearance: Active TS/SCI with CI Poly (FS Poly may satisfy where accepted by the customer)
Certifications: Required; Security+ CE at minimum where applicable, or other certification aligned to the assigned DoD 8140 work role

Position Summary

The Senior Systems Engineer (Citrix) will lead the design, deployment, optimization, and sustainment of an enterprise Citrix Virtual Desktop Infrastructure in a secure cloud environment. The engineer will support a high-visibility MBSE/digital engineering platform and will be responsible for secure, scalable, high-performance virtual desktop services, cloud infrastructure integration, automation, testing, and troubleshooting.
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.

Key Responsibilities

• Design, implement, and optimize Citrix Virtual Apps and Desktops (CVAD) in a secure cloud environment.
• Deploy and configure Citrix Delivery Controllers, StoreFront, NetScaler/Client, Virtual Delivery Agents, and supporting components.
• Implement and sustain Citrix Provisioning Services (PVS) and/or Machine Creation Services (MCS) for image management.
• Manage Citrix infrastructure, hypervisors, storage, user profiles, and FSLogix configurations.
• Monitor capacity and performance, troubleshoot complex VDI issues, and implement corrective and preventive actions.
• Configure and deploy infrastructure and COTS applications using Infrastructure as Code and Applications as Code practices.
• Support identity and access integrations including Active Directory, LDAP, SAML, OAuth/OIDC, and related services.
• Create test plans, validate new capabilities, maintain technical documentation, and support secure Agile/DevSecOps delivery.
• Collaborate with customer end users and cross-functional engineering teams to improve platform usability, reliability, and performance.
• 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 Qualifications

• 10+ years of relevant professional experience.
• Bachelor's degree in a STEM discipline.
• Current DoD 8140 qualification/certification appropriate to the assigned DCWF work role and proficiency level. Acceptable examples for this position may include: CompTIA Security+ CE, ISC2 CISSP, ISC2 CCSP, CompTIA SecurityX (formerly CASP+), ISC2 SSCP, CompTIA Cloud+. Final acceptability is subject to the current DoD 8140 Qualification Matrix and prime contractor/customer work-role requirements.
• Current and active TS/SCI clearance with CI Polygraph. Mandatory at time of submission.
• infrastructure tools and COTS applications as Infrastructure as Code (IaC) and Applications as Code (AaC) to join our visible technical program driving the Model Based Systems Engineering (MBSE) cloud platform
• Expertise working with Linux platforms and COTS applications in Linux cloud environments.
• 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/Client 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 Client 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 Qualifications

• Advanced STEM degree or role-relevant technical certifications.
• 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).

Core Competencies

• Citrix/VDI architecture
• Cloud infrastructure engineering
• Performance optimization
• Identity and access integration
• Operational troubleshooting

Work Environment

Work is performed in support of a secure U.S. Government program and may require on-site access to controlled facilities, customer systems, and classified environments. The successful candidate must maintain all required clearance, access, cybersecurity certification, and program eligibility requirements throughout the assignment.
Position 14. 48 | Sr. Systems Engineer