Top Senior Security Engineer Jobs

Lead design, implementation, automation, and operation of enterprise Okta identity services. Drive application onboarding, federation, lifecycle management, resiliency, monitoring, incident response, governance, and platform automation while mentoring engineers and improving security posture.

Lead cloud security initiatives across AWS, Azure, and GCP by partnering with SRE, architecture, and app teams. Implement secure-by-design controls, monitor and improve cloud posture, support compliance, threat detection, incident response and forensics, mentor junior engineers, and integrate new security technologies into networking cloud environments.

Support authorization and accreditation of classified Azure Government systems by developing A&A packages, SSPs, POA&Ms, and ATO documentation. Manage security controls, continuous monitoring, auditing, logging, vulnerabilities, and compliance across Azure security services. Guide SIEM/SOAR integrations, remediation, DevSecOps security, control evidence collection, assessments, and federal authorization processes. Coordinate with technical teams, mission owners, assessors, and authorizing officials while maintaining NIST, DoD, and CIS compliance.

Define, build, secure, and operate Front’s internal software platform across AWS and Snowflake. Establish engineering standards, infrastructure-as-code, CI/CD, observability, secrets management, vulnerability controls, RBAC, security monitoring, DLP, incident response, compliance support, and AI client integrations. Partner with engineering, data, GTM Systems, IAM, Enterprise Security, and Legal while enabling self-service deployment and maintaining reliable internal infrastructure.

Provides onsite cybersecurity engineering for classified defense intelligence systems. Responsibilities include supporting DIA authorization and accreditation under RMF, obtaining IATT, ATC, and ATO approvals, designing secure systems and physical controls, configuring and validating security tools, developing test plans, analyzing scan results, remediating vulnerabilities, and supporting incident response. The role requires advanced Windows and Linux administration, security tool expertise, IAT Level 2 compliance, and a TS/SCI clearance with polygraph.

Provides cybersecurity engineering and architecture support for classified information systems. Develops secure technical standards, evaluates technologies, performs gap and risk analyses, advises stakeholders, and leads cybersecurity initiatives. Collaborates with architecture, engineering, and operations teams to deploy compliant solutions, improve efficiency, and reduce technical debt. The role is 100% onsite in Tucson, requires an active Secret clearance, and includes up to 10% business travel. A DoD 8570.01 IAM Level III certification must be obtained within six months if not already held.

Designs, implements, and sustains cybersecurity capabilities across enterprise and mission systems. Performs continuous monitoring, vulnerability scanning, SIEM analysis, technical security assessments, control validation, risk prioritization, and remediation leadership. Engineers security controls into virtualized platforms, shared storage, and mission networks while troubleshooting Linux and Windows servers, endpoints, Cisco devices, and enterprise file systems. Ensures compliance with NIST, CNSS, DISA STIG, and related security frameworks.

Lead the engineering modernization of enterprise data protection and DLP capabilities across cloud, SaaS, endpoints, email, and collaboration platforms. Build automated Policy-as-Code workflows, CI/CD pipelines, reusable controls, integrations, detection logic, guardrails, and operational metrics. Partner with technical, compliance, privacy, legal, and business teams to improve security effectiveness, reduce false positives, automate governance, investigate events, and demonstrate measurable risk reduction.

Leads the design and implementation of secure IT infrastructure, performs security monitoring and threat analysis, enforces security controls, evaluates security technologies, manages patching and vulnerability scanning, and maintains continuous system security. Provides guidance to stakeholders, manages security projects, mentors junior engineers, and participates in incident-response on-call rotations.

Lead the maturation of Ontic’s AWS cloud security program by designing and automating security controls, integrating security into CI/CD workflows, improving cloud monitoring and detection, and developing continuous evidence collection for FedRAMP and other compliance initiatives. Partner with Engineering and DevOps teams on secure architecture, cloud best practices, regulated SaaS environments, and measurable security improvements.

Leads technical developer relations and strategic software-account engagement for NVIDIA integrations across observability, security, and AI platforms. Builds demos, sample code, guides, APIs, SDK integrations, and technical enablement programs; advises developers and partners; drives adoption and co-innovation; delivers talks and workshops; coordinates with engineering, product, sales, legal, and marketing; and translates ecosystem trends and developer feedback into product and platform strategy.

Designs and delivers security solutions for enterprise information systems and network architectures. Ensures classified systems meet information assurance requirements through RMF authorization and accreditation, including IATT, ATC, and ATO. Develops security designs and test plans, analyzes scans and findings, prioritizes remediation, and implements corrective measures. Supports security tools and collaborates with clients on technical requirements. Requires expertise in Windows, Linux, cloud or DevOpsSec, ACAS, Trellix, Splunk, STIGs, and classified systems.

Leads DLP security operations across endpoint, network, SaaS, and cloud environments. Responsibilities include deploying and tuning DLP controls, investigating data exfiltration incidents, developing data classification policies, automating alert response playbooks, threat hunting for anomalous data movement, managing incident remediation, and tracking DLP effectiveness metrics. The role also supports incident response and vulnerability management and partners with stakeholders to balance security, usability, and regulatory requirements.

Owns the company-wide IT and cybersecurity program, including SOC 2 compliance, cloud security, penetration-test remediation, business continuity testing, endpoint management, access controls, onboarding and offboarding, AI security governance, vendor reviews, security training, incident response, and employee IT support. The role partners with engineering, HR, Finance, leadership, auditors, and healthcare customers while managing security across AWS, Heroku, Cloudflare, Google Workspace, GitHub, and related tools.

Design and implement onboard networking and security for spacecraft: define Ethernet switching/routing, packet and file encryption, FPGA-to-FPGA links and NoC, apply FEC, integrate PHY/MAC, validate link health, and author architectural documentation.

Lead cybersecurity engineering for systems, ensuring compliance with RMF/NIST and security standards (STIG, OWASP, CIS). Perform vulnerability assessments, A&A support, risk analyses, implementation guidance, and vulnerability remediation using tools like Nessus, Nexpose, ACAS, and SAST/DAST. Coordinate stakeholders, document security posture, and obtain required special access and clearances.

Design and maintain security architectures for defense systems, conduct risk assessments and vulnerability analyses, integrate encryption and access controls, perform security testing and remediation, manage RMF/CMMC certifications, lead anti-tamper and reverse-engineering efforts, and coordinate exportability and compliance across the SDLC and program lifecycle.

Lead embedded systems security for sensor and mission solutions: ensure compliance with government policies (JSIG, DAAPM), develop/validate cybersecurity requirements, support ST&E, perform reverse engineering/anti-tamper analysis, manage A&A documentation and POA&Ms, guide exportability and international requirements, and drive secure architecture, testing, and policy alignment across hardware and software lifecycles.

Protect and harden Wolters Kluwer's centralized GenAI platform (FAB) by implementing cloud-native security controls, IAM and least-privilege practices, DevSecOps automation, vulnerability management, security monitoring, and compliance support (SOC 2, HIPAA). Collaborate with engineering and audit teams to integrate security into CI/CD pipelines, triage findings, and support incident response and audit readiness.

Lead advanced threat detection, security audits, forensic investigations, and incident response. Design and enforce security protocols, manage access controls, perform risk assessments, evaluate security tools, deliver training, and prepare technical security reports to maintain and improve organizational security posture.

Lead design, administration, integration, and continuous improvement of CyberArk-based privileged access solutions across cloud and on-prem environments. Onboard privileged accounts, perform application integrations, produce architecture and operational documentation, partner with DevOps/infrastructure/security teams, drive policy and control improvements, support disaster recovery and incident response, and participate in 24x7 support when required.

Lead design, implementation, and oversight of enterprise security controls. Define security policies, manage access and monitoring, recommend security products, perform compliance audits (SOX/PCI), mentor engineers, run incident response, and support intrusion detection, encryption, firewalls, and vulnerability management across projects.

Design, implement, and support enterprise network and security infrastructures for customers. Deliver professional services from discovery and design through production support, documentation, and demonstrations. Engage customers as a trusted technical advisor, support pre-sales labs/POCs, maintain demo labs, pursue certifications, and drive continuous technical development.

Design, implement, and maintain data security controls and safeguards across data platforms. Manage access controls, perform risk assessments, implement encryption and DLP, respond to incidents, support compliance and audits, document controls, and deliver data security training in coordination with data governance and compliance teams.

Lead design, integration, and deployment of trustworthy secure platforms. Define system security requirements, architect cybersecurity solutions, evaluate systems for cyber, reverse-engineering, and supply-chain threats, develop security documentation per government requirements, configure and monitor security infrastructure, mentor junior engineers, and present technical results to stakeholders.