Top Senior Cyber Security Jobs

Develop backend systems for large-scale web applications and security products primarily in Go. Write robust, modular code, optimize performance, participate in code reviews and documentation, and collaborate across technical and product teams. The role requires strong HTTP and networking knowledge, Linux, automation, shell scripting, and backend operations experience. Engineers participate in core US business hours and an on-call rotation, with occasional travel as needed.

Performs security assessments and engineering for AI/ML systems, large-scale compute clusters, AWS Cloud infrastructure, networks, and enclave environments. Designs and integrates information assurance architectures, identifies and mitigates security risks, validates security requirements, supports certification and accreditation, and enforces trusted relationships and government security policies. Collaborates with engineering teams and government customers on secure system development and operational deployment.

Designs, supports, and secures network infrastructure in a mission-focused environment. Responsibilities include network deconfliction, scripting and development, packet inspection, traffic analysis, penetration testing, Linux security operations, network device configuration, virtual infrastructure development, and collaboration with managers, stakeholders, developers, and mission partners. The role provides technical support to a multidisciplinary team and requires an active TS/SCI clearance with polygraph.

Manage and secure AWS, Microsoft 365, cloud applications, network infrastructure, and enterprise security platforms. Monitor logs and security events, support SIEM, MDR, MFA, EDR, and data protection tools, and provide advanced IT troubleshooting. Lead security initiatives, audit preparation, regulatory compliance, policy development, and secure AI adoption while supporting regulated clinical trial operations.

Designs and delivers Qualys-based security and compliance solutions for enterprise customers across cloud and on-premises environments. Supports technical sales engagements, proofs of concept, architecture workshops, proposals, deployment health checks, and customer advisory activities. The role addresses asset and vulnerability management, patching, compliance, threat detection, application security, and remediation. It also contributes to product roadmap feedback, sales enablement, technical content, field training, and industry events, with at least 30% customer travel.

Designs, implements, maintains, and evolves firewall and network security systems supporting a global Department of State network. Troubleshoots complex firewall-related incidents, evaluates security products and configurations, develops upgrade plans, coordinates with vendors and the CISO, and serves as a senior escalation point for administrators and technicians. The role also documents security elements, researches emerging threats, approves technical solutions, and provides guidance to junior staff.

Leads cryptographic engineering for secure space and ground communications systems. Responsibilities include crypto unit trade studies, hardware and firmware integration, interface definition, testing, verification, key management, lifecycle management, requirements traceability, and compliance with cybersecurity and NSA standards. The role supports PKMA, represents crypto engineering in technical reviews, collaborates with government and industry partners, and mentors junior engineers. The position is on-site in El Segundo, California, or Colorado Springs, Colorado, with approximately monthly travel.

Lead identity security engineering strategy across user, development, and production environments. Guide IAM architecture, privileged access management, threat detection, adversarial testing, compliance automation, and security-control validation. Mentor engineers, define identity security roadmaps, build automation and proofs of concept, collaborate with business and security leaders, and modernize protective controls using offensive and defensive security expertise.

Designs and implements secure cloud architectures, IL5 controls, STIG-aligned hardening baselines, identity integrations, and cybersecurity controls for federal and DoD-aligned platforms. Performs security assessments, vulnerability analysis, continuous monitoring, secure deployment reviews, audit support, and remediation planning. Requires expertise in AWS, NIST, RMF, PKI, SIEM, and cloud security, along with mentoring junior engineers and documenting technical architectures. The role is fully remote but requires an active Top Secret clearance and substantial security engineering experience.

Senior Security Engineer responsible for application, cloud, and platform security across an enterprise SaaS environment. The role involves building security automation and agents, integrating risk-based reviews into development, conducting threat modeling and code reviews, improving detection and observability, remediating systemic risks, and supporting compliance initiatives. The engineer will partner closely with development teams and help secure AI-powered features, cloud infrastructure, APIs, and deployment mechanisms.

Lead offensive security and red team engagements across complex networks and applications, using adversarial tactics for vulnerability discovery, exploitation, persistence, evasion, and remediation validation. Develop testing strategies, payloads, tools, and C2 infrastructure; conduct source reviews and reverse engineering; document findings; and improve blue-team detection capabilities. Collaborate with stakeholders, communicate technical risks, and lead technically diverse cyber teams while supporting DoD cyber operations and maintaining required certifications and clearance.

The Senior Security Engineering Manager oversees security policy compliance, manages incident response, tracks threats, and coordinates investigations, ensuring operational stability.

The Senior Manager Security Engineering manages security policies, incident response, and threat tracking, ensuring compliance and operational stability in the organization.

The Senior Security Engineering Manager oversees security policies, manages incident response, monitors threats, and coordinates investigations while ensuring compliance.

Design, build, automate, and operate network security controls across AWS, GCP, private cloud, and enterprise environments. Lead security architecture initiatives, implement zero trust and SASE solutions, assess infrastructure designs, and support firewalls, WAF, DDoS, and IPS/IDS controls. Partner with cybersecurity and trust teams on policies and compliance, mentor engineers, document architectures, and participate in production on-call support.

Build and secure scalable backend services for an AI product, focusing on authentication, authorization, data isolation, threat monitoring, secrets and key management, vulnerability management, audit logging, and enterprise data protection. Partner with security, compliance, product, and engineering teams to identify trust-boundary issues and deliver pragmatic security improvements. Contribute to cloud infrastructure, compliance initiatives, and general backend engineering in a fast-moving startup environment.

Recognized as a senior security expert, this role independently resolves complex cybersecurity challenges, defines methods for new assignments, provides strategic direction, and collaborates across teams. The engineer leads high-impact security projects, develops innovative solutions aligned with business needs, and drives enterprise-wide improvements to security practices and operational efficiency.

Leads cybersecurity engineering and DoD Risk Management Framework activities for Navy information systems. Develops RMF artifacts, conducts vulnerability and risk assessments, applies STIGs and SRGs, supports A&A and ATO processes, performs continuous monitoring and compliance testing, and coordinates remediation. Advises government stakeholders, prepares technical documentation and CDRL deliverables, and mentors junior ISSE personnel.

Drive end-to-end vehicle security initiatives across software and hardware, including development, integration, testing, threat modeling, security feature implementation, and platform tooling. Guide product teams on secure design, build security automation, and resolve cross-functional security tradeoffs. The role spans low-level firmware, embedded systems, cloud services, and full-stack security solutions for connected vehicles.

Applies security best practices to optimize and protect systems, analyzes and resolves security challenges, partners with internal teams on security initiatives, and collaborates with engineers to improve security processes. The role independently addresses security needs, contributes to cross-functional projects, influences team effectiveness, and aligns security solutions with business objectives.

Build Ent’s endpoint data-protection layer for classifying sensitive data, tracing provenance, and enforcing egress policies across devices, applications, networks, removable media, browsers, and AI tools. Develop cross-platform interception and content inspection capabilities, integrate on-device language models, optimize performance, produce forensic evidence, investigate compatibility issues, and improve detection precision for enterprise customers.

Architects and maintains cybersecurity infrastructure, policies, standards, and compliance programs. Leads vulnerability reviews, remediation, risk assessments, incident response, forensic investigations, security audits, and regulatory compliance efforts. Develops security strategies, certification methodologies, monitoring plans, and disaster recovery/business continuity architectures. Coordinates security implementations across IT and business departments, reports to the CISO, and promotes security awareness and training.

Design, build, and maintain security products and infrastructure: real-time detection engines (Flink/Kafka), high-performance APIs (Go/Node.js), streaming analytics, Kubernetes at hyperscale, and petabyte-scale data pipelines. Lead technical designs, collaborate with security teams, and mentor junior engineers.

Design and build real-time security detection engines and streaming analytics using Apache Flink and Kafka. Develop high-performance security APIs and microservices in Go and Node.js, architect Kubernetes-based security solutions, and build petabyte-scale data pipelines. Lead technical design, collaborate with security teams, and mentor junior engineers.

Lead and execute Grow Therapy's multi-year Security Engineering roadmap. Build secure-by-default infrastructure (auth, authZ, logging, egress), drive data security and systematic data tagging, develop org-wide security scorecards, enable automated least-privilege and vulnerability management, and influence AI-native security and security culture across product, platform, and compliance teams.