NewLead Security Engineer Revolutional, LLCLead Security EngineerSuitland, MD$140,000–$200,000 / yearWe apply modern capabilities, including AI/ML, cloud, cybersecurity, and IT modernization to solve complex challenges, enable faster and more secure operations, and drive measurable mission outcomes. This program is driving a large-scale transformation of systems into a data-centric, cloud-native ecosystem capable of supporting high-volume, near real-time data processing and advanced analytics.
Technical SME 22nd Century Technologies, Inc. (TSCTI)Technical SMEWashington, DCFull timeThe ideal candidate will possess deep expertise in Windows Server administration, virtualization, enterprise storage, identity integration with Microsoft Entra ID, and enterprise cloud platforms including Microsoft 365 or Office 365 within highly regulated environments. The Systems Engineer Lead is responsible for the design, administration, optimization, and security of enterprise server infrastructure supporting mission-critical academic, defense, and research operations.
NewLead Systems Engineer Revolutional, LLCLead Systems EngineerMcLean, VA$150,000–$190,000 / yearWe apply modern capabilities, including AI/ML, cloud, cybersecurity, and IT modernization to solve complex challenges, enable faster and more secure operations, and drive measurable mission outcomes. This program is driving a large-scale transformation of systems into a data-centric, cloud-native ecosystem capable of supporting high-volume, near real-time data processing and advanced analytics.
NewSenior Software Engineer / Data Scientist (Training Systems) LeidosSenior Software Engineer / Data Scientist (Training Systems)Chantilly, VA$154,050–$278,475 / yearBachelor’s degree in Computer Science, Data Science, Software Engineering, Mathematics, Engineering, or related technical field with 8+ years of relevant experience and 15+ years overall experience; additional experience may be considered in lieu of degree. Familiarity with contemporary AI coding ecosystems and developer productivity tools such as Claude Code, OpenAI Codex, Cursor, OpenCode, GitHub Copilot, or similar platforms.
NewCloud Security Engineer SteerBridgeCloud Security EngineerVienna, VAExperience implementing and managing identity and access management controls, including role-based, attribute-based, and federated access models, ensuring least-privilege enforcement and secure authorization across architectures and access governance practices. We don’t simply hire exceptional talent; we cultivate it , creating meaningful career pathways for veterans, military spouses, and professionals who share our passion for advancing technology and strengthening the missions we serve.
NewDHS Sr. Operational Technology (OT) Security Engineer OneZero SolutionsDHS Sr. Operational Technology (OT) Security EngineerWashington, DCThe result of these efforts will be that the systems meet all the requirements for ATO approval before they are officially submitted to the Office of Chief Information Officer (OCIO).Job SummaryServe as the Cybersecurity Assessment Team's principal Operational Technology SME.Participate in the development and implementation of comprehensive Cybersecurity program strategies, including OT security engineering design review, vulnerability assessments, penetration testing, and incident response planning. Operational Technology (OT) Security EngineerLocation: NCRClearance: TS /SCIOneZero Solutions is on contract to provide division-wide support for Federal Information Security Modernization Act (FISMA) compliance, execution of the Risk Management Framework (RMF) process to achieve and maintain Authority to Operate (ATO) security authorizations, and deliver cyber security compliance for DHS operational mission systems.
NewStaff Security Engineer Alarm.comStaff Security EngineerTysons Corner, VA$167,500–$180,500 / yearOur comprehensive suite of solutions—including security, video surveillance, access control, active shooter detection, intelligent automation, energy management, and wellness—is delivered exclusively through a trusted network of thousands of professional service providers and commercial integrators across North America and worldwide. We collect and use those categories of Personal Information about you for human resources and other business management purposes, including identifying and evaluating you as a candidate for potential or future employment or future positions, recordkeeping in relation to recruiting and hiring, conducting criminal background checks as permitted by law, conducting analytics, and ensuring compliance with applicable legal requirements and Company policies.
NewSenior Cryptographer - Post Quantum & High-Assurance Systems (TS/SCI) VibrintSenior Cryptographer - Post Quantum & High-Assurance Systems (TS/SCI)Reston, VAWork Locations in Virginia / Maryland / DC / Remote (with CONUS travel)You will be a senior technical advisor working alongside Vibrint's cleared engineering teams and QED's cryptography leadership, advising federal customers and evaluating cryptography modernization roadmaps. Working alongside many of the most talented professionals in public service, we work tirelessly to create and sustain new solutions and services that meet the stringent demands across a variety of customer missions.
NewSystems Verification Engineer ActalentSystems Verification EngineerRockville, MD$55–$75 / hourThe position focuses on requirements verification, requirements traceability through the Requirements Verification Traceability Matrix (RVTM), and system-level validation across highly integrated hardware, software, and modeling subsystems in a multi-contractor environment. We are proud to be an Engineering News-Record (ENR) Top 500 Design Firm for our engineering design services and a ClearlyRated Best of Staffing® winner for both client and talent service.
NewWireless Systems Engineer Chartis Consulting CorporationWireless Systems EngineerAshburn, VAThe Wireless Systems Engineer will play a key role in designing, integrating, and modernizing wireless communications systems, including point-to-point, mesh, and mobile networks. This position requires a strong understanding of wireless communication technologies and IP networking, along with the ability to gather customer requirements, develop tailored solutions, and support implementation.
NewOT Security Engineer (Hybrid/Remote) Macro SolutionsOT Security Engineer (Hybrid/Remote)Bethesda, MDRemoteBasic Qualifications: Bachelor’s degree in cybersecurity, computer science, engineering (mechanical, electrical, controls, systems), IT, or a related field. Candidates must currently live in the Washington, DC metro area and be willing to work onsite in Bethesda three days per week.
NewHVAC Controls Systems Engineer Johnson Controls Federal SystemsHVAC Controls Systems EngineerArlington, VAWe've been supporting the Pentagon for nearly 20 years with their energy efficiency and sustainability needs, primarily related to the HVAC Mechanical and HVAC Controls (Building Automation Systems). • Must be willing and able to complete JCI training course C-7201-EN Metasys System Engineering and C-10122-EN Custom Logic (Including Global Sequencer) @ CCT 10.1.
NewPipeline Systems Engineer (Oil & Gas) ProSidian Consulting, LLCPipeline Systems Engineer (Oil & Gas)Washington, DC0 JOB OVERVIEW Provide services and support as a Pipeline Systems Engineer (Oil & Gas) [Independent Engineering (IE) Advisory Services] aligned with the Technical Execution / Independent Engineering Functional Area / Swim Lane / Category Discipline in the Energy Industry (Oil, And Gas/Power, And Utilities) Industry Sector focussing on RM | Risk Management Solutions for clients such as U.S. Department of Energy (DOE) | DOE Energy Dominance Financing (EDF) Program Generally Located In CONUS - Located In Washington, DC / Nationwide (Remote Project Support Across the United States) and across the District of Columbia / Nationwide (Remote Project Support Across the United States) - Independent Engineering Advisory Services are typically performed remotely and at project sites nationwide. An EDF-style Independent Engineering engagement could include:- Upstream Oil & Gas (Exploration and production | Reservoir development | Drilling programs)- Midstream (Pipelines | Compression facilities | LNG infrastructure | Storage terminals)- Downstream (Refineries | Petrochemical facilities | Processing plants)- Power & Utilities (Generation facilities | Transmission infrastructure | Grid modernization | Energy storage) Other Details Role supports NAICS 541330 Engineering Services for Energy Dominance Financing (EDF) Program/Loan Programs Office (LPO) energy infrastructure financing, with work performed for high-impact oil and gas, power, utilities, and infrastructure projects.
Junior Security Control Assessor System OneJunior Security Control AssessorBethesda, MD$100,000 / yearYou’ll work under a senior assessor and help evaluate security control implementation, validate evidence, and document results in alignment with NIST Risk Management Framework (RMF) and NIST SP 800-53 Rev. Education: Bachelor’s in Cybersecurity, IT, Computer Science, Information Systems (or similar) OR 4 additional years of relevant experience in lieu of a degree.
NewInfrastructure & Security Engineer SOLUTIONS FOR INFORMATION DESIGNInfrastructure & Security EngineerFairfax Station, VAThe role leads, owns, designs, administers, secures, and continuously improves SOLID's corporate and program-specific technology environments, including cloud services, servers, virtual machines, identity platforms, endpoints, networks, firewalls, backups, and monitoring tools. The position also supports Department of Defense Risk Management Framework and other federal cybersecurity requirements, including system hardening, vulnerability management, continuous monitoring, incident response, and Authority to Operate documentation.
Lead Systems Integration Engineer LeidosLead Systems Integration EngineerGlenwood, MD$87,100–$157,450TFDM program is a Federal Aviation Administration’s (FAA) NextGen program based on airport surface management provides that efficiencies for both the airport surface and terminal airspace by providing a new and comprehensive integrated surface traffic control and management system. June 3, 2026For 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.
Systems Engineer LeidosSystems EngineerTemple Hills, MD$107,900–$195,050If 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 LeidosCareersFraud@leidos.com. • The candidate should be a proactive leader and team player with strong communication, management, analytical, and problem solving skills; proven ability to thrive in environments that constantly embraces new technology.
NewSenior Security Engineer 1 Accord Consulting LLCSenior Security EngineerAnnapolis Junction, MDMust have one of the following DoD approved certifications to meet the category/level IAT-2 (DoD 8570) requirement for this position: Security+, GSEC, SSCP, CCNA-Security, CISA, CISSP (or Associate), CASP, GCIH, or GCED. Must have one of the following DoD approved certifications to meet the category/level IAT-2 (DD 8570) requirement for this position: Security+, GSEC, SSCP, CCNA-Security, CISA, CISSP (or Associate), CASP, GCIH, or GCED.
NewSenior Security Engineer Lentech Inc.Senior Security EngineerLinthicum, MDPreferred : Experience with systems engineering; Knowledge of the Risk Management Framework (RMF) process and NIST 800-53 security controls; Knowledge of a national agency’s corporate systems and their implementation of security controls; Knowledge of 800-53 security controls and how to apply them to a system; Ability to assess residual risk based on threat and security control implementation; Possession of excellent verbal and written communication skills; Bachelor's degree in a technical field. 6+ years of experience in system security engineering principles, including assessment of overall security posture of U.S. government computer networks; 5+ years of experience conducting and coordinating COMSEC, INFOSEC, or IA activities; Experience with requirements gathering and analysis and client and stakeholder engagement through working groups and technical exchange meetings; Knowledge of system or security architecture; Ability to work both individually and in a team environment in an enterprise-level organization; HS diploma or GED.
NewIT Engineer (Apple Ecosystem & End-User Security) - Remote (WFH) COGNITIVE MEDICAL SYSTEMS INCIT Engineer (Apple Ecosystem & End-User Security) - Remote (WFH)Vienna, VARemoteCognitive is an IT and software engineering services company dedicated to elevating the quality, speed and delivery of today’s US government healthcare programs. Lead the configuration and management of MacBook laptops using Jamf Pro, ensuring zero-touch deployment, automated patching, and security baselining.