Top Secret/sci Jobs

Peraton is hiring a Technical Project Engineer / Special Assistant to provide executive-level program and technical support for its federal cyber portfolio in Rosslyn, VA.

Boeing is hiring an Associate Software Systems Engineer to support systems engineering, requirements, and Agile delivery for space-focused software and distributed computing solutions in Herndon, VA.

Lead business development for CAE’s Combat Air Forces efforts, driving customer engagement, capture strategy, and LVC/M&S solutions for USAF fighter and next-gen training programs.

Lawrence Livermore National Laboratory is hiring an experienced Section Leader for Electromagnetics to lead technical teams and programs in pulsed-power and accelerator technologies supporting national security missions, requiring an active DOE Q or Top Secret clearance and the ability to obtain SCI.

Serve as Onebrief’s on-site Operations Manager at CASCOM (Fort Lee), leading customer relationships, driving product adoption, and ensuring renewals across multi-star headquarters.

KBR is hiring a Release Train Engineer to lead program execution and system integration for high‑visibility national security and space C2 programs at Beale AFB, CA.

Provide on-site DMSS Kit operations, training, updates, and maintenance in support of Fleet Cyber Command Pacific and forward-deployed naval cyber teams.

Riverside Research is hiring a computational scientist to develop state-of-the-art computational electromagnetics algorithms and scientific software for national-security research and development.

Peraton is hiring an onsite Cyber Engineer at Aberdeen Proving Ground to develop and test cryptographic, embedded, and networked systems while mentoring junior engineers.

Peraton is hiring a Cyber Reverse Engineer to perform advanced firmware and application reverse engineering and vulnerability analysis in support of national security systems at Aberdeen Proving Ground.

Peraton is hiring a Customer Support Specialist in Tampa to deliver instructional programs and provide tier‑1 technical support for the IRIS platform.

Technical IT Systems Administrator needed to operate and support VMware-based Linux and Windows infrastructures in classified national-security environments at Riverside Research’s Beavercreek site.

Senior Operations Research Analyst supporting AFLCMC ISR & SOF at Wright-Patterson AFB, delivering portfolio analysis, acquisition support, and executive advisory services.

Provide on-site systems and network administration, cybersecurity support, and classified-system operations for DONSAPCO at the Pentagon.

Northstrat seeks an experienced GVS Operations Engineer to maintain and support GEOINT Visualization Services systems, ensuring mission-ready performance, security, and compliance.

KBR is hiring an Associate Modeling & Simulation Developer in Reston to support DARPA MS&A efforts by building combat system and agent-based models using C++, Python/R and modern software practices.

Node.Digital is hiring a cleared Technical Writer & Editor to create and maintain cybersecurity documentation and briefings for on-site incident response in Arlington, VA.

Lead the architecture and delivery of resilient communications and software-defined radio systems at Anduril, driving waveform design, DSP implementation, and cross-functional engineering execution.

EXPANSIA is looking for an MBSE/SysML specialist to develop and scale SysML missile models and workflows as part of a cloud-native digital engineering pipeline in Beavercreek, OH.

Parsons is hiring a Senior Digital Signal Processing Engineer to architect and implement advanced signal and image processing algorithms for mission-critical defense systems.

Senior BD leader sought to shape, capture, and grow complex battlespace awareness and imaging programs across U.S. Services and DoD organizations.

Serve as a Senior Help Desk Specialist delivering advanced, mission-critical IT support across classified and unclassified environments to maintain secure and reliable operations.

Senior Academic Instructor/SME needed to deliver and sustain advanced AOC/AFFOR command-and-control instruction and courseware for the 705th Training Squadron at Hurlburt Field.

Work as an MBSE engineer at an employee-owned defense-focused firm to transition missile performance models into a cloud-native Digital Engineering pipeline using SysML and related tools.

Experienced MBSE engineer needed to develop and maintain system models for air-delivered nuclear weapon systems in support of acquisition and sustainment activities at KBR.

Senior Help Desk Specialist needed to deliver advanced support for classified and unclassified systems in a mission-driven, remote US role requiring an active DoD Top Secret/SCI clearance.

Lead the design and implementation of automated RF test systems for Anduril’s Electromagnetic Warfare products, integrating state-of-the-art RF equipment and production test infrastructure.

Work at the intersection of autonomy, AI, and defense systems as a Software Engineer contributing high-performance algorithms and full-stack solutions for mission-critical deployments.

ORAU seeks an entry-level Security Assistant to support the FBI in Huntsville by executing clearance processing, database checks, security assessments, and administrative functions to maintain compliance with federal security standards.

Peraton seeks an experienced VDI Data Center Engineer to design and optimize secure, high-availability datacenter and hybrid-cloud infrastructure supporting classified DoD IT systems.

Peraton seeks a Cyber Software Engineer in Herndon to build and secure containerized, mission-focused software using Agile DevSecOps practices and modern tooling.

Senior-level avionics engineers are needed to troubleshoot, maintain, and support MQ-4C Triton payloads and communications systems at a Jacksonville Main Operating Base, requiring an active Top Secret clearance and strong field-service experience.

Northrop Grumman is hiring a Program Manager 2 with an active Top Secret clearance to lead cost, schedule, technical performance, and subcontractor integration for tactical space programs in Dulles, VA.

Northrop Grumman seeks a Program Manager (Level 1) with an active Top Secret clearance to drive cost, schedule and technical performance for high-value tactical space programs.

Experienced UI/UX Developer needed to craft accessible, responsive interfaces and front-end implementations for AnaVation's mission-focused products while working in a hybrid, cleared environment.

CGS is hiring a Legal Clerical Worker with a Top Secret/TS-SCI clearance to manage case tracking, document processing, and administrative support for FBI legal workflows.

Agile Defense is hiring a Rapid Response Team Lead to manage DISA J6 ETM 2.0 rapid-response operations at the Pentagon, driving project delivery, budget oversight, and team leadership under an active Top Secret SCI clearance.

Lead and embed with the 11th Airborne Division in Anchorage to drive Onebrief adoption, manage senior stakeholder relationships, and deliver technical and operational support to ensure sustained renewals and expansion.

Lead strategic capture and business development for Capella’s Mission Solutions to secure satellite mission and data-as-a-service programs across the U.S. DoD and Intelligence Community.

Onebrief is hiring an Operations Manager with multi-star headquarters planning expertise and an active Top Secret/SCI-eligible clearance to be physically based at Schofield Barracks and accelerate Onebrief usage across the 25th Infantry Division.