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Prepare, author, and maintain RMF artifacts, including the System Security Plan (SSP), Security Assessment Report (SAR), Continuous Monitoring Strategy, and supporting security control evidence. Maintain cybersecurity dashboards, track POA&Ms aging and vulnerability trends, and monitor operational security tickets, incident responses, and change approvals.

Every day, System One focuses on services and solutions that require a high degree of specialization, in-demand technical skills, and large-scale operational expertise. We are essential partners to those on the front lines of our nation’s most critical infrastructure, technology, and life sciences initiatives. 
Founded more than 40 years ago as a staffing partner to the engineering industry, today System One is a diversified organization operating in over 50 locations and putting more than 9,000 people to work in the United States, Canada, and the United Kingdom.

System One

Cyber Security Engineer

Securing AI Workflows: Design security frameworks for the end-to-end AI lifecycle, including securing data ingestion, protecting model weights, and implementing "Guardrail" architectures for Large Language Models (LLMs). • AI-Enhanced Pipeline Security: Architect and maintain automated CI/CD pipelines that utilize AI/ML models for static and dynamic analysis (SAST/DAST) to identify complex vulnerabilities that traditional rule-based tools miss.

PLANIT Group is a fast-growing global technology consulting firm dedicated to delivering innovative solutions to our clients that drive results. We collaborate with our partners and customers to help them improve performance, efficiency, and quality. Our team delivers innovative solutions and services - including management consulting, systems integration, ERP solutions, enterprise architecture, communications, and infrastructure services. We focus on delivering value and driving increased productivity and efficiencies for our clients’ mission. Our extensive experience in the Federal, Defense, Intelligence, State, Local, Healthcare and Commercial industries delivers proven results and accelerated benefits.
Clients engage PLANIT for our expertise, innovative approach, and our exceptional team. We promote a creative, client-centric work environment and culture, striving to provide challenging and rewarding opportunities for our company’s employees and partners. Integrity and innovation are the core principles of our company philosophy. Our customers engage us to create solutions to complex mission challenges, and PLANIT delivers. For more information, visit http://www.planitgroup.com/. Innovation. Integration. Integrity.

PlanIT Group

IT- Cyber Security Architect/ Engineer III

FULL_TIME

YEAR

Recent (within the last three years) hands-on experience in at least two of: CSfC solution design or Trusted Integrator work, post-quantum cryptography migration planning, applied artificial intelligence or machine learning, and enterprise data analytics. DoD 8140 qualification at the Advanced proficiency level for DCWF work role 652 Security Architect [or 651 Enterprise Architect], and compliance with any DoD 8570 baseline cited in the task order or DD 254.

SimVentions is 100% employee-owned and proudly ranked among Virginia’s Best Places to Work year after year! We are seeking a Database Architect to join our team! This position requires daily on-site presence at our Virginia Beach office.

Sr Systems Engineer

Since 2006, MAXISIQ has advanced the state of Cyber RDT&E by bringing together industry expertise in software, hardware, communications and security, and leveraging decades of operational experience to deliver exceptional value to communities and the critical missions they support. Providing enterprise virtualized environment support by providing high-end engineering; support Windows, and Linux workstations and Server-based services; and deployment and maintenance of systems supporting our customers.

MAXISIQ, Inc.

Systems Engineer

pandologic_px

Lead or support complex test operations by coordinating with flight operations, ground support crews, air traffic control, range personnel, and other external stakeholders as required to maintain safe execution, strong team communication, and day-to-day technical alignment. L3Harris Agile Development Group (ADG) is seeking a Flight Test Engineer to join the Flight Test and Evaluation team in support of developmental and operational test activities for unmanned aircraft and missile systems.

L3Harris Technologies

Lead Flight Test Engineer

TMP PX

In addition to technical contributions, this position conducts the day‑to‑day software lead activities by providing technical guidance, assigning tasks, reviewing and approving formal documentation, and estimating labor, tools, and other resources to meet budget and schedule commitments. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Lead, Software Engineer

BS/BA (or equivalent) in Optical, Electrical, Computer Engineering, Computer Science, Information Technology or related field, and minimum 6 years Software or systems experience or Graduate’s degree and 4 years software or systems experience. This Integration and Test / Technical trainer needs to experience in developing and executing structured training sessions tailored to customer needs, ensuring knowledge retention and effective skills transfer.

(DoW SkillBridge), Specialist, Integration & Test Engineer

Bachelor’s degree in Engineering, Physics, or another related scientific discipline and a minimum of 4 years of prior relevant experience; Or, a Graduate degree and a minimum of 2 years of prior related experience; Or, in lieu of a degree, a minimum of 8 years of prior related experience. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

EO/IR Systems Engineer

This role focuses on application development, software architecture, cloud-native technologies, AI-enabled automation, systems integration, and advanced analytical capabilities that improve mission readiness, logistics, sustainment, and supply chain operations. The successful candidate will build scalable software applications, APIs, enterprise services, automation tools, and AI-enabled capabilities that transform complex operational and logistics information into mission-focused software solutions.

Credence

Senior Software Engineer

Credence Mgmt Solutions

Architect and deliver end‑to‑end AI/ML solutions on Google Cloud using Vertex AI (Workbench, Pipelines, Training, Model Registry, Online/Batch Prediction, Feature Store, Model Monitoring) and Gemini/LLM services—optimized for performance, cost, and maintainability. Proven experience architecting robust data ingestion, processing, and transformation workflows using Dataflow, Data Fusion, Dataproc, BigQuery, and Looker and integrating these platforms with Vertex AI for model training, deployment, and inference.

Senior Google AI Engineer

You will collaborate with cross-functional engineering, data, cloud, and stakeholder teams to deliver scalable, secure, and mission-focused AI capabilities for federal clients, while helping guide technical direction, strengthen engineering practices, and mentor other engineers. Experience designing or implementing agentic AI solutions using frameworks or platforms such as Agent2Agent Protocol, Bedrock Agents, Mastra, CrewAI, Strands, AgentCore, LangChain, or LangGraph.

Senior AI Software Engineer

Manages and administers a wide range of security systems and tools: o Administers cloud-based security tools such as, Azure Security Center (Sentinel, Log Analytics, Azure WAF, Defender for Identity, Privileged Identity Manager); Microsoft 365 Security Suite (Defender, Advanced Threat Protection, Cloud Application Security, Protection Portal); Microsoft Security and Compliance Center; Microsoft Endpoint Manager (Intune); multi-factor authentication (MFA); web content filtering; and secure document sharing and collaboration solutions. o Operates cloud-based security tools such as, Azure Security Center (Sentinel, Log Analytics, Azure WAF, Defender for Identity, Privileged Identity Manager); Microsoft 365 Security Suite (Defender, Advanced Threat Protection, Cloud Application Security, Protection Portal); Microsoft Security and Compliance Center; Microsoft Endpoint Manager (Intune); multi-factor authentication (MFA); web content filtering; and secure document sharing and collaboration solutions.

IT Security Specialist

The individual will serve as a senior technical leader responsible for architecting mission concepts, defining system requirements, and developing CONOPS, use cases, and systems‑engineering artifacts across the full system lifecycle. With customers’ mission-critical needs always in mind, our employees deliver end-to-end technology solutions connecting the space, air, land, sea and cyber domains in the interest of national security.

Scientist, Systems Engineer

Strong understanding of ETL, ELT, and other similar data pipeline processes, as well as Enterprise Data and Storage Systems, such as experience with OpenSearch/Elastic Search, Kafka, Bedrock, Glue, DataBricks, Snowflake, AWS S3, RDS, EBS, or Glacier. You’ll drive agentic AI development lifecycles and collaborate across engineering, data, and stakeholder teams to deliver high-impact, cloud-native AI capabilities that advance federal missions.

Senior Data Engineer

Experience with creating and improving automation scripts across multiple technical stacks using Python, • Experience with troubleshooting and resolving issues related to both open source and commercial tools in public cloud environments. • Experience with AWS & Azure & the development of tools and processes to drive DevSecOps maturity by automating builds, regression testing, monitoring, and pushing releases across environments.

DevSecOps Engineer

Monitoring, Observability & Incident Response: Implement monitoring, logging, tracing, dashboards, and alerting across cloud infrastructure, Kubernetes, applications, and platform services using technologies such as AWS CloudWatch, Security Hub, GuardDuty, Splunk/ELK, Prometheus, Grafana, OpenTelemetry, or comparable solutions. Collaboration & Knowledge Sharing: Work closely with software engineers, AI engineers, cybersecurity teams, cloud engineers, architects, and mission stakeholders to integrate security, automation, and platform capabilities throughout the software development lifecycle.

AI Platform & DevSecOps Engineer

Our AI, cloud, cyber, and modernization solutions save agencies thousands of hours, safeguard national security, and strengthen health and humanitarian missions worldwide. Provides expertise to configure and maintain DevOps tools including but not limited to GitLab, Jenkins, Nexus, and SonarQube.

Mid-level DevSecOps Engineer

HOUR

This role bridges full-stack software development with automated security gates, enforcing compliance with DoDI 8430 (Accelerated Mission Software Development), the DoD Software Modernization Strategy, and Continuous Authorization to Operate (cATO) criteria. cATO & Governance Automation - Implement automated policy-as-code to satisfy continuous compliance gates under DoDI 8430 and OSD CIO cATO requirements (Real-time Visibility, Active Cyber Defense, Pipeline Attestation).

Sr DevSecOps Engineer

Have working knowledge and experience with ICD 503, NIST 800-53r4/5 controls, NIST 800-171R2, NIST Risk Management Framework, NISPOM Chapter 8, DCSA DAAPM 2.2. Compensation decisions and the base range for this role take into account many factors including but not limited to skill sets; experience and training; licensure and certifications; and other business and organizational needs.

We show people how to make the world work better with maps and apps. We are the best in our fields from all walks of life and all over the world. We come together in small teams to make big ideas happen. With our GIS technology, anything is possible. Come join us.

Esri

Sr. Systems Engineer

Ivy Exec

If you're passionate about understanding how software works at a low level, uncovering security flaws, and building impactful technical solutions, this opportunity offers the chance to work on challenging, mission-focused projects. Proven experience in vulnerability research, including identifying zero-day vulnerabilities, logic flaws, memory corruption issues, and other security weaknesses.

Cyber Security Engineer Jobs in Washington, DC

Cyber Security Engineer System One

IT- Cyber Security Architect/ Engineer III PlanIT Group

Sr Systems Engineer Sr Systems Engineer

Systems Engineer MAXISIQ, Inc.

Lead Flight Test Engineer L3Harris Technologies

Lead, Software Engineer L3Harris Technologies

(DoW SkillBridge), Specialist, Integration & Test Engineer L3Harris Technologies

EO/IR Systems Engineer L3Harris Technologies

Senior Software Engineer Credence

Senior Google AI Engineer Credence

Senior AI Software Engineer Credence

IT Security Specialist PlanIT Group

Scientist, Systems Engineer L3Harris Technologies

Senior Data Engineer Credence

DevSecOps Engineer PlanIT Group

AI Platform & DevSecOps Engineer Credence

Mid-level DevSecOps Engineer Credence

Sr DevSecOps Engineer System One

Sr. Systems Engineer Esri

Jr Software Engineer Top Echelon

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