Senior ISSE/Penetration Tester TS/SCI Polygraph LeidosSenior ISSE/Penetration Tester TS/SCI PolygraphAnnapolis Junction, Maryland$131,300–$237,350 / yearThe selected candidate will have a range of day-to-day responsibilities across multiple activities, including the following: Validating and verifying system security requirements and establishing system security designs for large-scale systems, major system elements, and interfacing systems that are part of a large complex network environment with geographically distributed components. April 28, 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.
Senior Software Configuration Manager LeidosSenior Software Configuration ManagerAnnapolis Junction, Maryland$131,300–$237,350 / yearMust have excellent interpersonal skills, with the ability to build effective working relationships and interface professionally with peers and leadership, including developers, engineers, testers, customer points of contact, and company management. Our talented team is at the forefront in Security Engineering, Computer Network Operations (CNO), Mission Software, Analytical Methods and Modeling, Signals Intelligence (SIGINT), and Cryptographic Key Management.
Sr. Release Train Engineer TS/SCI Polygraph LeidosSr. Release Train Engineer TS/SCI PolygraphAnnapolis Junction, MarylandThis role requires close partnership with teams to assess Feature progress, identify risks to delivery, understand the factors affecting planned work, and help remove or mitigate obstacles that may impact successful completion. Bachelor’s degree in Systems Engineering, Computer Science, Information Systems, Engineering Science, Engineering Management, or a related discipline from an accredited college or university, and at least 12 years of relevant experience.
Senior Linux Systems Administrator LeidosSenior Linux Systems AdministratorAnnapolis Junction, MarylandThe ideal candidate brings deep hands-on Linux administration experience and is comfortable supporting mission-critical Development, Test, and Production environments using command-line tools, system logs, automation, and established change-management processes. The Linux Systems Administrator will serve as a senior technical resource responsible for system configuration, automation, security hardening, vulnerability remediation, monitoring, troubleshooting, and continuous improvement of Linux-based infrastructure and operational practices.
Sr. Program Control Analyst AerovironmentSr. Program Control AnalystAnnapolis Junction, MD$116,500–$177,500 / yearEnsure responsive customer-focused services through communication and coordination with the Government Contracting Officer (KO), Contracting Officer Representative (COR), Contracting Officer Technical Representative (COTR), AV PM, and Subcontractor PM team. It speaks to who we are as a company, a global protective ring that shields everything we most want to safeguard, an unbroken line that ensures our customers retain the advantage in any battlespace, from high above the Earth to deep in cyberspace.
NewSenior Manager, Project Management-Power Delivery ICF International IncSenior Manager, Project Management-Power DeliveryReston, VA$98,614–$167,644 / yearDeep working knowledge of project management methodology, project controls, and risk management, plus hands-on experience managing project financial performance including revenue forecasting, profitability, earned value, change management, and budget control. Pay Range - There are multiple factors that are considered in determining final pay for a position, including, but not limited to, relevant work experience, skills, certifications and competencies that align to the specified role, geographic location, education and certifications as well as contract provisions regarding labor categories that are specific to the position.
Sr. Windows Systems Administrator TS/SCI Poly LeidosSr. Windows Systems Administrator TS/SCI PolyAnnapolis Junction, MarylandThis role also includes supporting server, router, and firewall configuration, as well as performing security management and application performance optimization activities in an environment made up of VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI). • Managing Information Assurance Vulnerability Alerts (IAVAs) and system security scanning in accordance with applicable System Security Plans, ensuring vulnerabilities are identified and remediated quickly and accurately.
NewSenior Cyber Tools Architect/Engineer (Quantico) Marathon TS, Inc.Senior Cyber Tools Architect/Engineer (Quantico)Quantico, VAThe ideal candidate will serve as the technical authority for cybersecurity tools, platforms, and frameworks, responsible for defining, designing, and enhancing enterprise-wide security architectures that protect our organization's critical assets, data, and systems across complex, hybrid, and multi-cloud environments. Marathon TS is hiring a Senior Cybersecurity Tools Architect/Engineer in support of our Defense Counterintelligence Security Agency (DCSA) program based out of Quantico, VA.This is primarily a Telework position with a requirement to be onsite at least two (2) days a week or as needed at Quantico Marine Corps Base, VA.
Senior Windows Systems Administrator BAE Systems PlcSenior Windows Systems AdministratorAnnapolis Junction, MD$146,670–$249,330 / yearAbout BAE Systems Intelligence & Security BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Infrastructure Oversight: Monitor and optimize a sophisticated ecosystem comprising VMware server hosts, Windows and Linux guest servers, and Virtual Desktop Infrastructure (VDI).
Enterprise - Senior System Engineer - WBS, EMP, CCB Erias VenturesEnterprise - Senior System Engineer - WBS, EMP, CCBAnnapolis Junction, Maryland$225,000–$250,000 / yearManage and ensure the technical integrity of the system baseline over time, continually updating it as various changes are imposed on the system during the lifecycle from development through deployment and operations & maintenance (U) Support the planning and test analysis of the DoD Certification/Accreditation Process (as well as other Government Certification and Accreditation (C&A) processes). Establish a process to formally and proactively control and manage changes to requirements, consider impacts prior to commitment to change, gain stakeholder buy-in, eliminate ambiguity, ensure traceability to source requirements, and track and settle open actions.