Systems Engineer

Description Leidos is seeking a highly skilled Systems Engineer to design, implement, and maintain our hybrid infrastructure. In this role, you will play a critical part in managing our virtualized environment, optimizing cloud workloads, and ensuring robust endpoint and server security. The ideal candidate has deep technical expertise in VMware, Citrix, and AWS, coupled with a strong background in Active Directory management and rigorous automated enterprise patching workflows. Key Responsibilities Virtualization & VDI Management: Administer, configure, and optimize enterprise VMware vSphere/ESXi environments. Build, maintain, and scale Citrix Virtual Apps and Desktops (VDI), managing storefronts, delivery groups, and golden images. Cloud Infrastructure: Manage and optimize cloud solutions within AWS , leveraging core services such as EC2, S3, VPC, IAM, Route 53 , and auto-scaling groups to support hybrid connectivity. Identity & Access Management: Oversee and maintain Active Directory (AD) , including Group Policy Objects (GPOs), organizational units (OUs), domain controller health, and identity access control settings. Endpoint & Infrastructure Security: Deploy, configure, and maintain Trellix endpoint security, threat intelligence, and antivirus policies across the enterprise ecosystem. Patch Management & Maintenance: Own the end-to-end vulnerability management and OS/software patching lifecycles for Windows/Linux servers and VDI instances, minimizing downtime through proactive maintenance windows. Monitoring & Performance Tuning: Utilize enterprise monitoring tools to proactively foresee bottlenecks, troubleshoot complex tier-2/3 technical incidents, and ensure maximum systems availability. Required Qualifications & Skills Must have an active TS/SCI with Poly Technical Experience Virtualization: 3-5+ years of hands-on experience administering VMware vSphere and Citrix VDI infrastructures. Cloud Platforms: Proven experience deploying and maintaining infrastructure in Amazon Web Services (AWS) . Identity & Directory Services: Deep understanding of Active Directory Architecture , DNS, DHCP, and group policies. Security Tools: Direct experience working with Trellix (formerly McAfee Enterprise / FireEye) endpoint security management tools. Automation & Patching: Proficiency with automated patching tools and configuration management systems (e.g., WSUS, SCCM, Ansible) along with scripting capabilities in PowerShell , Python, or Bash. Education & Certifications Education: Bachelor's degree in Computer Science, Information Technology and at least 12 years of relatable work experience OR a Masters and at least 10 year of relatable work experience OR 16+ years of relatable work experience. Preferred Attributes Strong analytical and troubleshooting skills under pressure. Excellent collaboration skills to act as a bridge between security, development, and network teams. Experience operating within a structured Change Management process framework. Preferred Certifications: VMware Certified Professional ( VCP ) Citrix Certified Associate / Professional ( CCA-V / CCP-V ) AWS Certified Solutions Architect or SysOps Administrator If you're looking for comfort, keep scrolling. At Leidos, we outthink, outbuild, and outpace the status quo - because the mission demands it. We're not hiring followers. We're recruiting the ones who disrupt, provoke, and refuse to fail. Step 10 is ancient history. We're already at step 30 - and moving faster than anyone else dares. Original Posting: September 15, 2026 For U.S. Positions: While subject to change based on business needs, Leidos reasonably anticipates that this job requisition will remain open for at least 3 days with an anticipated close date of no earlier than 3 days after the original posting date as listed above. Pay Range: Pay Range $131,300.00 - $237,350.00 The Leidos pay range for this job level is a general guideline onlyand not a guarantee of compensation or salary. Additional factors considered in extending an offer include (but are not limited to) responsibilities of the job, education, experience, knowledge, skills, and abilities, as well as internal equity, alignment with market data, applicable bargaining agreement (if any), or other law. About Leidos Leidos is an industry and technology leader serving government and commercial customers with smarter, more efficient digital and mission innovations. Headquartered in Reston, Virginia, with 47,000 global employees, Leidos reported annual revenues of approximately $16.7 billion for the fiscal year ended January 3, 2025. For more information, visit Pay and Benefits Pay and benefits are fundamental to any career decision. That's why we craft compensation packages that reflect the importance of the work we do for our customers. Employment benefits include competitive compensation, Health and Wellness programs, Income Protection, Paid Leave and Retirement. More details are available at Securing Your Data Beware of fake employment opportunities using Leidos' name. Leidos will never ask you to provide payment-related information during any part of the employment application process (i.e., ask you for money), nor will Leidos ever advance money as part of the hiring process (i.e., send you a check or money order before doing any work). Further, Leidos will only communicate with you through emails that are generated by the Leidos.com automated system - never from free commercial services (e.g., Gmail, Yahoo, Hotmail) or via WhatsApp, Telegram, etc. If you received an email purporting to be from Leidos that asks for payment-related information or any other personal information (e.g., about you or your previous employer), and you are concerned about its legitimacy, please make us aware immediately by emailing us at . If you believe you are the victim of a scam, contact your local law enforcement and report the incident to the U.S. Federal Trade Commission. Commitment to Non-Discrimination All qualified applicants will receive consideration for employment without regard to sex, race, ethnicity, age, national origin, citizenship, religion, physical or mental disability, medical condition, genetic information, pregnancy, family structure, marital status, ancestry, domestic partner status, sexual orientation, gender identity or expression, veteran or military status, or any other basis prohibited by law. Leidos will also consider for employment qualified applicants with criminal histories consistent with relevant laws.