Skip to content
Overview: GovCIO is currently hiring for a Senior Pentration Tester with an active TS/SCI clearance to support DHS onsite in Washington, DC. Responsibilities: The Senior Penetration Tester serves as Key Personnel responsible for leading advanced penetration testing and vulnerability assessment activities within a TS/SCI environment. This role ensures mission-critical security assurance across enterprise systems, applications, and cloud infrastructures by applying deep technical expertise, zero-trust principles, and attacker-focused methodologies. The Senior Penetration Tester guides technical... more ->
Role Summary/Purpose: The? VP, Staff Cryptography Engineer will'serve as a?key role in safeguarding enterprise multi-cloud systems, networks, and data.?The position?is responsible?for designing, developing, driving, implementing, leading and managing multi-cloud Information Security Engineering activities for the Cryptography program, including the underlying capabilities/technolog ies . In addition, this role will be responsible for acting as a?trusted peer and stakeholder advisor within the organization, working closely with Information Security Engineering leadership to ensure delivery of... more ->
ManTech International seeks a Classification Management Officer to support Defense & Aerospace IT & Cybersecurity missions. In this role, you will manage information classification guides, ensure proper marking, handling, and dissemination of classified and CUI data, and advise leadership on security policies. You'll collaborate with cyber and IT teams to integrate classification requirements into systems, conduct audits and training, support incident response, and maintain documentation to ensure compliance with DoD, IC, and federal standards in a mission-focused, highly secure environment. more ->
Date Posted: 2026-07-23 Country: United States of America Location: US-AZ-TUCSON- E Hermans Rd MULTI PURPOSE FAC 928 Position Role Type: Onsite U.S. Citizen, U.S. Person, or Immigration Status Requirements: Active and transferable U.S. government issued security clearance is required prior to start date. U.S. citizenship is required, as only U.S. citizens are eligible for a security clearance Security Clearance Type: DoD Clearance: Top Secret Security Clearance Status: Active and existing security clearance required on day 1 At RTX, the world's largest aerospace and defense company, 185,000... more ->
MANTECH seeks a motivated, career and customer-oriented Principal Cloud Engineer to join our team in Chantilly, VA. The Principal Cloud Engineer will leverage their strong technical background and knowledge to design, implement, and manage secure cloud infrastructures in support of mission-critical operations, with a strong focus on security monitoring and threat detection. This role supports complex cloud environments by leveraging modern DevOps tools and practices, collaborating across teams to solve technical challenges. Responsibilities include but are not limited to: Supporting AWS,... more ->
MANTECH seeks a motivated, career and customer-oriented Principal Azure Cloud Engineer to join our team in Chantilly, VA . The Principal Azure Cloud Engineer will leverage their strong technical background and knowledge to design, implement, and manage secure Azure cloud infrastructures in support of mission-critical operations, with a strong focus on security monitoring and threat detection. This role supports complex cloud environments by leveraging modern DevOps tools and practices, collaborating across teams to solve technical challenges. Responsibilities include but are not limited to:... more ->
MANTECH seeks an experienced and passionate, career and customer-oriented Linux Systems Administrator to join our team located in the Fort Meade, MD area. Responsibilities include, but are not limited to: Provide comprehensive administration and support for multi-platform operating system environments. Design and implement automated security hardening solutions to enhance scalability and streamline operating system deployments. Configure and maintain host-based security and intrusion detection systems. Monitor system performance and investigate detected anomalies to ensure operational... more ->
MANTECH seeks a motivated, career and customer-oriented Software Assurance Evaluation Engineer to join our team in Hanover, MD. The Software Assurance Evaluation Engineer will leverage their strong technical background and knowledge to support software assurance and security initiatives for a mission-critical organization within the Intelligence Community, focusing on secure and reliable data dissemination through rigorous source code analysis . Responsibilities include but are not limited to: Utilizing, fine-tuning, and evaluating the suitability of automated Software Assurance (SwA) tools... more ->
ManTech is looking for a Linux Systems Administrator who will be responsible for maintaining and administering our Servers and related computing environments including systems software, applications software, hardware, and configurations. This position plays a crucial role in ensuring the integrity and operation of IT systems within mission-critical national security programs. The ideal candidate should possess a strong understanding of Linux systems and a keen ability to troubleshoot and optimize IT infrastructure. more ->
MANTECH seeks a motivated, career and customer-oriented AWS Infrastructure Developer to join our team in Annapolis Junction, MD. Responsibilities include but are not limited to: Design and implement AWS infrastructure architectures supporting operational capability hosting and data processing. Deploy and manage AWS compute resources (EC2, ECS, Lambda) hosting operational capabilities and services. Implement network segmentation, security groups, NACLs, and routing policies enforcing operational security requirements. Leverage orchestration systems (Kubernetes, Nomad, or similar) for container... more ->
ManTech seeks a motivated, career and customer-oriented Data Scientist to join our team in Chantilly, VA . In this dynamic role, you will join a top-tier team of Information Technology and Analytic professionals dedicated to supporting national security through innovative data science and analytics. You will work in a self-contained Big Data environment where the team manages everything from infrastructure and application development to advanced analytics. This position offers numerous opportunities for growth, collaboration, and problem-solving in a thought-provoking, mission-driven setting.... more ->
At ManTech, a CNO Python Software Engineer is pivotal in providing innovative technologies and solutions supporting crucial mission-driven cybersecurity projects for the U.S. intelligence community. This role entails developing advanced Python applications for Computer Network Operations (CNO) that enhance national security measures. Working in our IT & Cybersecurity department, engineers develop, implement, and maintain software tools that penetrate or defend digital networks, ensuring alignment with federal cybersecurity guidelines. more ->
MANTECH seeks a highly technical and mission-focused Senior CNO Software Engineer to join our team in Hanover, MD or Aurora, CO. In this role, you will develop advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Manage the design, development, documentation, testing, and debugging of applications software and systems... more ->
Tech Support This principal-level individual contributor serves within Kaiser Permanente's Container Platform and Adoption Services organization and provides operational leadership for the enterprise container platform service across on-premises and public-cloud environments. The department supports a growing portfolio of business-critical applications and shared technology capabilities that require consistent service reliability, operational readiness, security, compliance, and resilience. The Container Platform Operations Lead centralizes operational accountability and serves as the primary... more ->
MANTECH is seeking a motivated, career-driven, and customer-focused Network Architect to join our team in Laurel, MD. You will play a critical role in supporting the enterprise infrastructure capabilities for a global, mission-focused workforce. This position supports the high-visibility Enterprise Infrastructure Services (EIS) organization, responsible for the delivery and security of MPO's Enterprise Information Technology (EIT), the foundation for enterprise-wide services. As a Senior Network Engineer/Architect, you will work alongside customers, Integrated Product Teams (IPTs), and... more ->
MANTECH seeks a skilled and mission-focused CNO Software Engineer to join our team in Hanover, MD. In this role, you will contribute to the development of advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to: Design and develop new hardware- or software-based CNO capabilities Assists with the design, development, documentation, testing, and debugging of applications software and systems... more ->