Top Security Engineer Jobs

Support RMF lifecycle for classified systems: develop A&A/ATO packages, implement and validate security controls, perform vulnerability and compliance scanning, manage STIG implementation and patch validation, produce RMF artifacts, and participate in continuous monitoring and risk analysis.

Lead regional network security engineering: administer and optimize WAN/LAN/Wi‑Fi, troubleshoot complex incidents, implement firewalls/load balancers, automate network tasks, ensure security/compliance, perform capacity planning, document architecture, and collaborate with cross-functional teams and vendors.

Senior-level security engineer responsible for architecting solutions using Rapid7, QRadar, and Symantec DLP. Review existing technical documents, define requirements, design security architectures, interact with clients, and ensure solutions fit network layouts. AWS/Azure cloud experience is a strong plus.

Provide technical support, implementation, configuration, and operations for multi-layer authentication infrastructure (MFA, PKI, S/MIME, SSL). Integrate identity systems with applications, perform Tier 3 NOC support, manage deployments/upgrades, troubleshoot complex network/authentication issues, and document/security standards. Occasional off-hours and data-center on-site work required.

Design, evaluate, and test system security to maintain data integrity. Implement and troubleshoot enterprise security tools, develop security policies and compliance processes, manage Windows server/client environments and Active Directory, document findings, and monitor/report vulnerabilities and breaches.

Design, implement, and operate LENS security architecture across cloud and application layers; lead FedRAMP/SOC 2 compliance; embed security into engineering via threat modeling and reviews; build monitoring, detection, and incident response; partner with engineering and public-safety customers to ensure platform trust and reliability.

Support and enhance the enterprise vulnerability management program: onboard applications, monitor and investigate alerts, perform threat analysis and incident response, communicate and guide remediation of vulnerabilities, conduct risk assessments, and act as security engineer/consultant across projects while maintaining security standards and reporting.

Hands-on senior IT security engineer/architect responsible for designing, implementing, and managing security solutions across networking, firewalls, data center, cloud, and wireless. Lead security assessments, present remediation recommendations, run red/blue exercises, support pre- and post-sales engineering, mentor peers, and deliver complex technology projects to meet client satisfaction.

Design, implement, and manage hands-on security solutions; perform complex security assessments and red/blue team exercises; support pre- and post-sales engineering; lead and mentor engineers; document and control changes; deliver multi-discipline solutions across networking, firewalls, wireless, data center, and cloud environments while ensuring high customer satisfaction.

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.

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.

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.

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.

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.

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, 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 implementation of security infrastructure for aviation ISR programs. Manage lifecycle of engineering and DevSecOps platforms (RHEL, GitLab/GitHub, Artifactory, 3DX, Cameo, Jama), enforce DISA STIG/NIST/ISO controls, troubleshoot integrations, mentor engineers, and support ATO/RMF and audits.