Information Systems Security Engineer (ISSE 3) TS/SCI - FS Poly SECON-DELTA LLCInformation Systems Security Engineer (ISSE 3) TS/SCI - FS PolyLaurel, MDFull timeTwenty (20) years’ experience as an ISSE on programs and contracts similar in scope, type, and complexity to include recent experience within the last five (5) years with Cybersecurity principles and technology, including access/control, authorization, identification and authentication, Public Key Infrastructure (PKI), network and enterprise security architecture. Provide critical support to the customer in designing, implementing, and/or integrating Cybersecurity and security systems and system components including those for networking, computing, enclave environments to include those with multiple enclaves and with differing data protection/classification requirements.
Senior Network Modernization & Policy Analyst CACI International Inc.Senior Network Modernization & Policy AnalystAlexandria, VA$103,800–$218,100 / yearThis position independently supports an Action Officer and serves as the primary SME driving enterprise-wide network modernization across the Department of Defense Information Network (DoDIN) including DISN optimization, MILDEP network convergence, tactical edge cloud initiatives, and Mission Partner Environment (MPE) capability development. Support the development and coordination of implementation plans to modernize and optimize network capabilities (e.g., DISN, MILDEP network convergence, and edge cloud) in support of DoD priorities to increase security, enhance effectiveness, and gain efficiencies across the DoDIN.
Cybersecurity Engineer SME LeidosCybersecurity Engineer SMEBethesda, MarylandExperience applying system security engineering principles in areas such as system security design, lifecycle engineering, authentication and authorization mechanisms, cryptography, intrusion detection, contingency planning, incident handling, auditing, configuration management, and change control. Experience with cybersecurity tools such as Rapid7, Tenable/Nessus, HBSS/Trellix, SonarQube, or endpoint detection and response (EDR) platforms, as well as using STIG viewers and compliance tools to assess systems against established security configuration baselines.
Sr. Systems Engineer TS/SCI Poly LeidosSr. Systems Engineer TS/SCI PolyAnnapolis Junction, MarylandResponsibilities include supporting and providing guidance for system development and implementation planning through assessment of system engineering plans and system integration and test plans; supporting the development of system configuration documentation, including designs for capacity and performance planning; and performing engineering activities such as risk assessments and analyses of alternatives for a variety of system related issues and concerns. June 22, 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.
Software System Engineer AerovironmentSoftware System EngineerAnnapolis Junction, MD$102,000–$255,000 / year10+ years of relevant experience with a Bachelor's degree in Computer Science, Computer Engineering, Electrical Engineering, Systems Engineering, or related technical field (an equivalent combination of education and experience may be considered). Determination of official compensation or salary relies on several factors including, but not limited to, level of position, job responsibilities, geographic location, scope of relevant work experience, educational background, certifications, contract-specific affordability, organizational requirements, alignment with local internal equity as well as alignment with market data.
Connectivity Engineer 3 Requires a TS/SCI with MD Poly security clearance Tulzi TechnologiesConnectivity Engineer 3 Requires a TS/SCI with MD Poly security clearanceMarylandImplements and sustains Wide area networks (WANs), Campus Area Networks (CANs), Data Center Networks/Interfaces (DCN/DCI), Network Security (NETSEC) and Tactical/Deployable Networking Systems. The Level 3 Connectivity Engineer shall possess the following capabilities: Resolve complex network problems, and operate network analyzers, WAN test equipment and network simulators.
Network Security Engineer 0 ItezzNetwork Security Engineer 0Annapolis Junction, MarylandCapabilities: Analyze hardware specifications and system/subsystem requirements to conceive and document a practical design for hardware components to include servers, network devices, transmission media, storage devices, user interface devices, and special processors. Compensation will vary dependent upon factors including but not limited to: Government contract rates; annual hours worked; education; relevant prior work experience, knowledge, skills, and competencies; certifications, and geographic location.
Information Systems Security Engineer Galapagos Federal Systems LLC.Information Systems Security EngineerWashington, Washington, DC$160,000–$170,000 / yearFull timeWe deliver professional services in IT Design & Installation, Cybersecurity Engineering & Support, Application Integration & Development, Software & Hardware Engineering, Network & Systems Management, Information Systems Security, and Business Management Services. The ISSE ensures strategic and technical adherence to all aspects of the Information Assurance (IA) program in accordance with U.S. Government and Intelligence Community requirements, including ICD 503, RMF, and applicable NIST and CNSSI guidance.
Systems Engineer Galapagos Federal Systems LLC.Systems EngineerWashington, Washington, DC$140,000–$150,000 / yearFull timeWe deliver professional services in IT Design & Installation, Cybersecurity Engineering & Support, Application Integration & Development, Software & Hardware Engineering, Network & Systems Management, Information Systems Security, and Business Management Services. The Systems Engineer serves as a key technical interface with government stakeholders, program leadership, and technical teams, ensuring the technical integrity of deliverables and successful integration of new capabilities into ongoing operations.
VDI Engineer Galapagos Federal Systems LLC.VDI EngineerWashington, Washington, DC$147,000–$157,000 / yearFull timeWe deliver professional services in IT Design & Installation, Cybersecurity Engineering & Support, Application Integration & Development, Software & Hardware Engineering, Network & Systems Management, Information Systems Security, and Business Management Services. This role analyzes mission and user requirements, develops virtual system architectures, and provides technical leadership across the virtual systems engineering lifecycle to ensure performance, security, and operational effectiveness.