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Senior Security Jobs in Adelphi, MD

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Information Systems Security Engineer (ISSE) Senior Level Power3 Solutions

Annapolis Junction, Maryland

Application and employment of cybersecurity expertise to systems and projects, to ensure that the appropriate security features and safeguards are designed, integrated, and implemented by all information systems throughout the system development life cycle. Key Responsibilities: Serve as the primary point of contact for security-related matters, including but not limited to threat detection, vulnerability management, and incident response.

30+ days ago

Senior Analyst The Carlyle Group Inc.

Washington, DC

$130,000–$140,000 / year

The Senior Analyst works closely with stakeholders across the private equity business - including Deal Teams, Fund Management, and the broader GPE organization - to build solutions that deliver automation wins and drive measurable value in how deals are sourced, diligenced, executed, monitored, and grown. Implement retrieval-augmented generation (RAG) pipelines, Knowledge Graph implementations, and broader LLM-based workflows using modern orchestration frameworks (and enterprise LLM platforms (e.g., AWS Bedrock, Anthropic Claude, OpenAI Codex).

30+ days ago

Sr Information Systems Security Officer (ISSO) Cloud, Advisor TS/SCI w/poly Peraton Inc

Washington, DC

$146,000–$234,000 / year

Minimum of 9 years of work experience in a Computer Science or Cybersecurity related field with at least 7 of those years serving as an Information Systems Security Officer (ISSO) at a cleared facility. Familiarity with the use and operation of security tools including Tenable Nessus and/or Security Center, Splunk, IBM Guardium, HP Web Inspect, Network Mapper (NMAP), and/or similar applications.

30+ days ago

Sr. Security Engineer - GRC Frameworks & AI Governance Twitter

Washington, DC

$152,000–$258,000 / year

The ideal candidate combines deep fluency across modern security and AI frameworks with GRC engineering skills: you translate control requirements into technical implementations, partner with engineers to bake compliance into architecture and CI/CD, and replace point-in-time checklist work with continuous, engineered assurance. RESPONSIBILITIES: Own and execute security compliance implementation and audits across core frameworks including SOC 2, NIST CSF, NIST SP 800-53, ISO 27001, ISO 42001, and the EU AI Act, including control design, mapping, gap assessment, evidence collection, and remediation tracking.

13 days ago

Senior Federal Account Executive (IC) Cohesity

Arlington, Virginia

Build financial business cases independently, connecting Cohesity’s AI-powered data security platform to outcomes across security, resilience, compliance, and cost; structure and negotiate complex, competitive deals, including ELAs, ramps, and partner-involved structures, trading value rather than discounting. Experience with Cohesity solutions (DataProtect, DataHawk, SmartFiles) strongly preferred; expertise with NetBackup, Backup Exec, and InfoScale, including immutable storage, hardened media servers, ACL-based controls, and encryption.

7 days ago

Senior Security Specialist, Vulnerability Management ViaSat Inc

Reston, VA

$150,000–$225,000 / year

Defending Technical Risk Decisions: Demonstrated ability to confidently explain vulnerability prioritizations, technical workarounds, and formal risk acceptance/exception decisions to both internal compliance teams and external auditors. Determine the Optimal Mitigation Path: Prioritize what needs to be fixed and how to do it efficiently-whether that means coordinating a full software/OS update, deploying a temporary configuration workaround, or implementing compensating security controls.

30+ days ago

Senior Azure Cloud Security Engineer PeopleNTech LLC

Alexandria, VA

Quick Apply

Administer and harden Microsoft Entra ID (Azure Entra): app registrations and Enterprise Application permissions, consent governance, service principals and managed identities, credential and secret hygiene, and least-privilege scoping. Apply security controls to AI workloads, services, and AI agents, including agent and workload identities, tool and permission scoping, data-exposure and prompt-injection risk, and emerging AI security best practices.

1 day ago

Sr Cloud Security Engineer PlanIT Group

Falls Church, VA

Quick Apply

Experience: 8+ years in a technical Cybersecurity Engineering role, with at least 4 years focused on large-scale cloud or hybrid environments, and a portfolio of projects where AI or Machine Learning was directly applied to solve security or operational scaling problems. • API-First Automation: Deep expertise in building "glue code" that connects disparate COTS and custom applications via secure, automated APIs to streamline cross-functional business activities.

30+ days ago

Senior Staff For Special Programs Budget Support Guidehouse

Washington, DC

$132,600–$198,800 / year

Maintain high-level knowledge of programs and provide a portfolio-wide perspective in support of routine execution analysis and support events such as Monthly Execution Reviews, Spring Program Reviews, and Summer Execution Reviews. Track POM/PBR impacts, congressional marks, CR requests, UFRs, etc. for the FMZ portfolio; maintain trackers at the correct security level on all required networks; consolidate and present data to FM leadership.

22 days ago

Senior Infrastructure Engineer- -TS/SCI Security Clearance Required Power3 Solutions

Columbia, Maryland

$150,000–$165,000 / year

Security Clearance Required: TS / SCI Minimum Education: High School Diploma or equivalent Minimum Years of Experience: 10+years of progressive experience designing, implementing, and supporting enterprise-scale infrastructure environments, including compute, storage, networking, virtualization, and identity services. Expert-level knowledge of Cisco UCS infrastructure, including architecture, administration, lifecycle management, firmware maintenance, capacity planning, and performance optimization in highly available enterprise environments.

30+ days ago

Sr. Security Researcher (Remote) CrowdStrike Inc

Remote

$85,000–$120,000 / year

That said, we are also open to applications by experienced and talented malware analysts or reverse engineers without significant knowledge in this field who are willing to rapidly expand their skills to meet the following requirements: What You'll Do: Technical Analysis: Implement tracking systems that inform cross-team adversary tracking efforts based on observed exploitation behavior. This highly technical position serves an important role in conducting analysis, increasing our coverage of the global threat landscape, contributing to the continuous tracking of criminal and state-sponsored adversary groups, and ultimately developing finished intelligence products.

30+ days ago

Sr. Government Affairs Manager (National Security) Space Exploration Technologies

Washington, DC

$155,000–$220,000 / year

As a member of the SpaceX Government Affairs team, you will support SpaceX and Starlink's business and growth objectives through direct federal lobbying efforts and strategic coalition building on a range of issues, including telecommunications, broadband, and national security. RESPONSIBILITIES: Support Government Affairs by serving as a front-line advocate for SpaceX on key policy areas, including national security and defense and Intelligence Community matters, artificial intelligence, satellite communications, and other national security capabilities.

30+ days ago

Sr. Director, National Security Operations (5626) MetroStar Systems

Reston, VA

$184,000–$270,000 / year

This role requires a strategic thinker with a proven track record of leading large teams, driving operational excellence, and implementing scalable processes that support growth. Cross-Functional Collaboration: Collaborate with leaders across MetroStar to support initiatives aligned to MetroStar's strategy map including support for organic and new business growth opportunities.

30+ days ago

Senior Software Engineer- JAVA, SPRING BOOT, REST| SWE4| TS/SCI w/ MD POLY Security Clearance required Power3 Solutions

Hanover, Maryland

$238,000–$275,000 / year

We combine deep technical expertise with a people-first culture to help modernize securely, accelerate capability delivery, and strengthen operational resilience. You will lead the creation of design documentation using Object-Oriented (OO) principles, ensuring new features integrate seamlessly without technical debt.

30+ days ago

Senior Network Enginer VetRamp

Silver Spring, Maryland

This role blends steady-state operational ownership with forward-leaning modernization efforts, with Cisco ISE ownership at the center of the access-control strategy : Own Cisco Identity Services Engine (ISE) policy architecture and operations, including 802.1X, MAB, profiling, posture, and RADIUS authentication. The Senior Network Engineer owns ISE policy architecture, authentication flows, and troubleshooting in production, supporting Zero-Trust-aligned access control across campus, data center, VPN, and cloud-connected environments.

30+ days ago

Sr. Network Engineer (Cisco & Network Security) Power3 Solutions

Maryland

Provides assistance in all aspects of network management from network design through implementation, maintenance, and upgrading of existing networks; Analyzes design, specifications, and related documents; Implements communication system requirements to support the distributed functionality of a software engineering environment; Analyzes network characteristics (e.g. Implement specific network solutions to support server requirements to include load-balancing, VPN’s, firewall contexts, Traffic Shapping Voice over IP (VOIP), GRE Tunneling, IP Security (IPSec) IP Encryption and Media over IP (MoIP), and network address translation (NAT) where appropriate.

14 days ago

Senior Research Security Analyst Lindahl Reed

Washington

Advanced degree in life sciences (i.e., biotechnology, chemistry, agricultural, agronomy and crop science, botany, entomology, soil health, food sciences, infectious diseases and zoonoses, veterinary science, marine studies) or an engineering discipline. Minimum Five (5) Years’s experience in the following disciplines: Experience evaluating complex research portfolios and identifying opportunities to maximize impact and potential security risks that should be mitigated.

30+ days ago

Senior Staff for Special Programs Budget Support Guidehouse

Dc, District of Columbia

$132,600–$198,800 / year

11 days ago

Senior Business Process Consultant UltraViolet Cyber

Washington, District of Columbia

$120,000–$130,000 / year

Founded and operated by security practitioners with decades of experience, the UltraViolet Cyber security-as-code platform combines technology innovation and human expertise to make advanced real-time cybersecurity accessible for all organizations by eliminating risks of separate red and blue teams. Support organizational change management activities including impact assessments, readiness evaluations, and adoption planning for AI and technology transformation initiatives- Facilitate cross-functional engagement with Cyber, Infrastructure, Mission Delivery, Business Support, and field stakeholders to ensure AI initiatives align with mission priorities

29 days ago

Senior Program Manager - CTJ - Top Secret Microsoft Corp

Washington D.C., DC

$101,800–$193,800 / year

Drives project initiation for projects of medium complexity (e.g., multiple offerings, and/or supports projects of high complexity (e.g., tailored offerings, high visibility, high impact, market making) by delivering a workstream within a larger project/program, by driving commitment of delivery resources, assigning resources, assisting in sourcing and qualifying partner resources, and creating work breakdown structures (WBSs) with delivery team. Applies advanced knowledge across project management principle areas to execution and delivery, contributes at local team-wide level to share knowledge and support others, serves as a mentor to less experienced colleagues to grow identified skill gaps, and participates in cross-border mentoring and peer alignment to share lessons learned on challenging projects.

30+ days ago

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Senior Security Jobs in Adelphi, MD

Information Systems Security Engineer (ISSE) Senior Level Power3 Solutions

Senior Analyst The Carlyle Group Inc.

Sr Information Systems Security Officer (ISSO) Cloud, Advisor TS/SCI w/poly Peraton Inc

Sr. Security Engineer - GRC Frameworks & AI Governance Twitter

Senior Federal Account Executive (IC) Cohesity

Senior Security Specialist, Vulnerability Management ViaSat Inc

Senior Azure Cloud Security Engineer PeopleNTech LLC

Sr Cloud Security Engineer PlanIT Group

Senior Staff For Special Programs Budget Support Guidehouse

Senior Infrastructure Engineer- -TS/SCI Security Clearance Required Power3 Solutions

Sr. Security Researcher (Remote) CrowdStrike Inc

Sr. Government Affairs Manager (National Security) Space Exploration Technologies

Sr. Director, National Security Operations (5626) MetroStar Systems

Senior Software Engineer- JAVA, SPRING BOOT, REST| SWE4| TS/SCI w/ MD POLY Security Clearance required Power3 Solutions

Senior Network Enginer VetRamp

Sr. Network Engineer (Cisco & Network Security) Power3 Solutions

Senior Research Security Analyst Lindahl Reed

Senior Staff for Special Programs Budget Support Guidehouse

Senior Business Process Consultant UltraViolet Cyber

Senior Program Manager - CTJ - Top Secret Microsoft Corp

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