Top Security Engineer Jobs

Support a federal agency SOC by administering Windows/Unix/Linux systems and security tools (Tenable, SourceFIRE, Splunk ES), perform vulnerability and compliance assessments, manage IDS/IPS and log solutions, produce dashboards and monthly vulnerability/patch reports, maintain SOPs and CSIRT wiki, provide O&M and on-call support, and recommend cloud security improvements. Requires extensive documentation and reporting.

Provide SOC support including system administration for Windows/Unix/Linux, manage IDS/IPS, log management, vulnerability assessment (Tenable, SourceFIRE), produce reports and dashboards, maintain baselines and SOP/CSIRT wiki, and assist cloud security improvements. On-call and documentation duties included.

Lead and execute Assessment & Authorization (A&A) and RMF activities, maintain security documentation (SSP, BoE, SCTM, STP, POA&Ms) in Xacta, perform SIEM log review and vulnerability analysis, advise developers on security requirements, monitor networks for threats, and respond to incidents in a 100% onsite secure environment.

Maintain and administer Quest ActiveRoles and Quest auditing/reporting tools, manage AD access control and security group audits, ensure compliance with security standards, script using PowerShell/T-SQL/ASP.NET, troubleshoot issues, interface with security teams, and produce architecture diagrams and documentation.

Provide cybersecurity engineering and operations support for DoDIIS Enterprise IT Infrastructure, lead A&A preparation, ensure compliance with ICD 503 and NIST/DoD IA frameworks, and coordinate IA across security disciplines.

Build, deploy, and maintain AppSec tooling; integrate security into SDLC; triage SAST/DAST findings; automate penetration testing; lead secure coding and threat modeling; support vulnerability detection, remediation, and incident response.

Lead and enhance HKA's Azure infrastructure and Microsoft security stack. Manage cloud operations, identity and access controls, Zero Trust implementations, monitoring, incident response, threat modeling, risk remediation, and compliance alignment across a global hybrid environment.

Manage day-to-day physical security operations for large-scale data centers, maintain and improve access control, video, and visitor systems; support audits, incident response, vendor coordination, documentation, and emergency readiness while driving standards, cost management, and technical certification maintenance.

Design, implement, and manage corporate security controls across identity, endpoints, network, and data. Lead IAM/SSO/MFA, EDR/MDM, email/DLP, vulnerability management, vendor risk assessments, phishing simulations, and incident investigations. Support compliance, audits, pen-tests/red-team remediation, and security culture through training and cross-functional collaboration.

Design and manage cloud and product security for AWS, perform security assessments and pen-test remediation, integrate security into DevOps/IaC, mentor engineers, and advise on compliance and threat mitigation across mobile core, applications, and cloud environments.

Lead product security for PTC SaaS: assess and remediate vulnerabilities, drive automation for detection/remediation, consult on secure design and SSDLC, perform threat modeling and application security assessments, and guide engineering teams on cloud, API, mobile, and DevSecOps controls.

Serve as the company's first security hire to design and implement security strategies, conduct assessments and vulnerability testing, collaborate with engineering on secure development, monitor and respond to incidents, and train staff on security best practices while maintaining compliance with relevant standards.

Lead security strategy and implementation across systems and applications. Perform vulnerability assessments, risk analysis, incident response, and secure-by-design collaboration with engineering. Advise on cloud and compliance controls, train staff, and improve overall security posture.

Design, implement, and maintain network security architecture for hyperscale HPC and cloud environments. Lead detection and response for network threats, integrate controls across on-prem and cloud, support segmentation and Zero Trust, evaluate security tech, mentor junior engineers, and document policies and standards.

Lead and mentor engineers to design, implement, and optimize hyperscale network security. Manage firewalls, proxies, segmentation, incident escalation, vulnerability assessments, and remediation. Build automation playbooks and integrate tools (Python, Terraform, vendor APIs) for lifecycle management. Coordinate with DevOps, infrastructure, and application teams to embed Zero Trust and secure cloud networking practices.

Lead design and operation of platform vulnerability management and real-time threat detection across bare-metal, containers, and cloud. Integrate security into CI/CD and IaC, run triage/prioritization, automate posture assessment, conduct platform security assessments, and collaborate with engineering to drive remediation and hardening.

Design, implement, and maintain scalable network security controls (firewalls, IDS/IPS, VPNs) across on-prem and cloud. Drive segmentation, security standards, monitoring/SIEM investigations, architecture reviews, automation, and mentor junior engineers.

Support threat intelligence, incident analysis/response, penetration test coordination, vulnerability scanning and remediation tracking, security tool administration, dashboard maintenance, and adherence to security policies while learning and developing cybersecurity skills.

Design, implement, monitor, and maintain database security controls and DAM platforms; perform risk analysis, policy creation, vulnerability assessment, compliance evidence gathering, and remediation coordination across business, ops, and audit stakeholders.

Deploy and operationalize depthfirst's security AI agents with customers, build integrations and data pipelines, translate customer needs into product features, and own end-to-end technical delivery including on-site support.

Design, integrate, and maintain secure multi-enclave network architectures meeting NSA CSfC and DoD/Army requirements. Configure and troubleshoot firewalls, VPNs, routing, VRF, IDS/IPS, virtualization, Windows and RHEL systems, and SIEMs. Develop automation scripts, produce architecture and test documentation, perform vulnerability assessments, and support lab, integration, and field activities with up to 25% travel.

Lead system-level engineering for SATCOM and in‑flight connectivity products, translating customer needs into requirements and use cases, performing system/sub-system design and verification, and maintaining technical documentation. Design and integrate embedded cybersecurity across wired/wireless aircraft systems, perform threat modeling, vulnerability assessments, pen testing, incident response, and security assurance to support certification and regulatory compliance. Mentor juniors, manage technical projects, and scout emerging technologies.

Design, test, and implement secure operating systems, networks, and security monitoring. Manage IT security systems, incident response, digital forensics, eDiscovery, and loss prevention. Conduct risk and vulnerability assessments, develop and implement security controls, and research and introduce new security tools and technologies aligned with enterprise IT security strategy.

Lead design and deployment of secure automation, infrastructure security, and CI/CD pipelines. Remediate vulnerabilities, support incident response, embed security across development and production, mentor engineers, and drive security strategy and documentation for DevSecOps environments in a defense/aerospace context.

Lead technical and governance cybersecurity for a classified defense program: hands-on vulnerability management, SIEM/ELK/Splunk operations, STIG hardening, RMF/ATO lifecycle ownership, ATO/SSP/POA&M development, ISSM leadership, government stakeholder briefings, and compliance with NIST, CMMC, and DCSA requirements.