Jobs at Leidos

Leads enterprise infrastructure services and 24/7/365 NOSC operations across classified and unclassified DoD environments. Directs multidisciplinary teams, network monitoring, threat triage, incident response, DevSecOps modernization, systems and storage sustainment, cybersecurity compliance, capacity management, data center operations, disaster recovery, and executive reporting. Ensures operational availability, ITIL change governance, RMF/STIG compliance, mission readiness, and coordination with DTRA leadership, CSSP personnel, and the Joint Operations Center.

Designs, implements, integrates, and sustains secure DoD wide-area IP networks. Responsibilities include network change management, troubleshooting, performance analysis, hardware and software implementation, uptime assurance, risk and cost control, and support for large-scale network projects. The role configures and troubleshoots Cisco and Juniper infrastructure, routing protocols, firewalls, VPNs, and related network technologies while supporting DISA customer requirements.

Design, build, and operate production software for AI-driven and autonomous systems. Develop AI agents, autonomy integrations, APIs, SDKs, data services, and platform applications across edge and cloud environments. Maintain secure CI/CD, testing, release evidence, observability, reliability, and incident response. Collaborate with architects and program teams, apply responsible AI practices, and evaluate emerging AI and developer-productivity technologies.

Develops mission-critical software for missile defense systems using Java, C++, microservices, and containerized environments. Responsibilities include software design, code reviews, system engineering collaboration, testing, deployment, technical documentation, and coordination with contractors and stakeholders. The role supports data integration, analytics, visualization, and decision-support capabilities deployed to Cheyenne Mountain.

Oversee cybersecurity documentation, assessments, and authorization packages for systems under the DoD RMF. Implement STIGs, support testing and risk-reduction events, manage POA&M items, monitor compliance and risk, and assist system owners with security requirements across applications, systems, and networks. The role requires Linux and Windows administration, cybersecurity assessment tool experience, customer communication, and collaboration across multiple technical tasks.

Leads cybersecurity and systems integration for Navy research systems, incorporating security architecture, controls, risk analysis, system hardening, vulnerability assessments, patch management, and compliance. Manages RMF activities, eMASS tracking, ATO/IATT approvals, continuous monitoring, and security documentation. Provides technical leadership, guides engineering teams, supports DoD acquisition processes, develops requirements documentation, and collaborates with military, scientific, and government stakeholders. Domestic and international travel may be required.

Designs and assesses cybersecurity for complex defense systems across requirements, architecture, implementation, integration, testing, production, fielding, and sustainment. Develops security requirements, evaluates architectures, coordinates vulnerability assessments, recommends remediation, and supports RMF documentation and authorization activities. Collaborates with systems, software, hardware, DevSecOps, manufacturing, testing, program management, and government cybersecurity stakeholders. Applies DoD, NIST, CMMC, STIG, and supply-chain security requirements.

Leads a systems integration lab and cloud engineering team supporting Air Force network and cyber operations. Manages AWS environments, lab resources, engineering workloads, and technical staff while overseeing systems architecture, network design, integration, testing, security, documentation, and lifecycle support. Develops scalable, highly available cloud solutions and interoperable hardware, software, and network platforms. Provides technical leadership, senior-level briefings, standards development, mentoring, and support for complex DoD systems and networks.

Serves as an Information System Security Officer for Joint Service Provider systems. Develops A&A documentation, manages RMF and authorization activities, reviews SSPs and STIGs, analyzes ACAS scans, conducts security audits and continuous monitoring, validates controls, addresses vulnerabilities, and supports security engineering and SDLC activities. The role also maintains ISSO procedures, coordinates stakeholders, and develops project management plans for achieving ATO.

Supports financial planning, budgeting, forecasting, reporting, and program controls for a large Army network modernization contract. Tracks labor, subcontractor, material, funding, and commitment data; maintains Excel-based financial models; assists with EAC/ETC analysis, variance analysis, reconciliations, revenue forecasting, and financial closeout. The role also supports program reviews, government meetings, compliance documentation, and coordination between Program Finance, contracts, subcontractors, and functional teams.

Leads daily IT field services operations across seven locations and more than 20 military bases. Oversees a 25-person blended workforce, manages HPSM queues and SLA performance, prioritizes deployments and break-fix incidents, maintains SOPs, coordinates watch-floor scheduling, produces operational reports, and synchronizes priorities with technical leads. The role requires hands-on equipment work, troubleshooting, travel between sites, DoD compliance, and Secret clearance.

Lead Agile software development teams building OSINT data and workflow platforms. Facilitate Scrum ceremonies, coach teams, manage backlogs and dependencies, remove impediments, mitigate risks, monitor performance, improve processes, and coordinate stakeholders. The role requires active Top Secret/SCI clearance, Scrum certification, SAFe experience, and software development program experience.

Coordinates and executes Defensive Cyber Operations training, including onboarding, external training registration, proctoring, material design and review, technical documentation, workforce alignment, stakeholder engagement, KPI tracking, and local policy compliance. The role requires a cybersecurity foundation, SOC experience, networking knowledge, and the ability to facilitate training and collaborate with subject-matter experts.

Conducts proactive cyber threat hunting and intelligence fusion for a SOC supporting DoD environments. Correlates external intelligence with SIEM, EDR, endpoint, network, and cloud telemetry; investigates adversary infrastructure, malware, vulnerabilities, and TTPs; develops detection logic and countermeasures; produces intelligence reports and leadership briefings; supports incident investigations; maintains hunt methodologies and detection content; and mentors junior analysts.

Supports cybersecurity risk management across cloud and enterprise environments, including vulnerability assessments, continuous monitoring, audit log management, NIST RMF documentation, security compliance, incident investigations, threat hunting, security reporting, and DevSecOps practices. Collaborates with technical and non-technical teams to implement security requirements, maintain system documentation, automate security responses, and strengthen overall security posture.

Monitor and analyze security alerts across networks and endpoints in a 24/7 SOC. Triage and investigate incidents, identify false positives, escalate suspicious events, manage vulnerabilities, tune detections, administer security tools, and produce incident reports while collaborating with Defence stakeholders.

Provide governance, risk and compliance leadership across Defence ICT delivery. Lead GRC documentation, support ATO/assurance processes, conduct security architecture reviews, identify and manage risks and compliance gaps, and collaborate with technical teams to embed security controls and produce evidence for Commonwealth acceptance.

Manage the end-to-end vulnerability management process across complex, classified mission systems. Responsibilities include vulnerability notification, tracking, escalation, stakeholder engagement, risk assessment, enterprise tool deployment and validation, cloud integration, process maturity uplift, and SLA development. The specialist will brief technical and non-technical stakeholders, coordinate with SOC and security engineering teams, and improve integrations with threat intelligence, detection, and incident response functions.

Develop and evaluate systems engineering, security, and certification documentation for complex mission-critical systems. Perform high-assurance cybersecurity evaluations, review security artifacts, identify deficiencies, assess vulnerabilities, and recommend risk-mitigation improvements. Support requirements analysis, system integration, testing, and DoD certification and accreditation activities. Lead small teams and collaborate in security-related technical reviews.

Perform design, implementation, integration, sustainment, maintenance, troubleshooting, and change management for secure DoD IP networks. Maintain at least 99% network uptime, analyze and configure routing, switching, firewalls, and network appliances, and support hardware and software implementation. The role also involves performance analysis, risk and cost control, project coordination, documentation, and compliance with customer and DoD requirements.