Top Senior Cyber Security Jobs in Austin, TX

Lead hardware and embedded security across device design, manufacturing, deployment, updates, and decommissioning. Develop security baselines, conduct architecture reviews and threat modeling, define requirements, validate controls, and drive remediation with hardware engineering teams. Focus areas include secure boot, firmware, FOTA, hardware root of trust, device identity, provisioning, cloud-connected devices, and secure-by-default engineering practices.

Leads cybersecurity architecture and product security initiatives across applications and platforms. Evaluates controls, technologies, and AI-assisted security recommendations; guides risk analysis, threat modeling, remediation, and security posture assessments. Partners with architects, developers, vendors, and business leaders to define scalable security patterns, validate solutions, and improve software development lifecycle controls, resiliency, auditability, and traceability.

Own internal offensive security assessments across applications, APIs, cloud infrastructure, and corporate systems. Plan and execute penetration tests, validate vulnerabilities safely, review source code, and partner with engineering teams through remediation and retesting. Build automated security testing tools and workflows, lead adoption of AI-assisted offensive security capabilities, support third-party testing, improve detection and incident response, and participate in on-call responsibilities.

Build and operate security infrastructure for MongoDB Atlas across AWS, Azure, and Google Cloud. Responsibilities include hardening Linux hosts and containers, implementing cloud security controls, workload identity, vulnerability management, Infrastructure-as-Code, runtime threat detection, and monitoring systems. The role leads initiatives from threat modeling and architecture through deployment and long-term production reliability.

Build and operate security infrastructure protecting MongoDB Atlas across AWS, Azure, and GCP. Responsibilities include hardening Linux hosts and containers, implementing Kubernetes security controls, managing CSPM and workload identity platforms, deploying security controls through Terraform and other IaC tools, and creating monitoring and alerting systems. The role leads initiatives from threat modeling and architecture through implementation, rollout, and ongoing production reliability.

Leads enterprise network security architecture, engineering, and modernization across cloud and on-premises environments. Designs firewalls, WAF, DDoS protection, Azure connectivity, microsegmentation, Zero Trust, SASE, and SD-WAN solutions. Serves as a Level 3 incident escalation point, drives root-cause analysis and resilience improvements, establishes automation and DevSecOps standards, and mentors engineers. Partners with stakeholders and vendors to deliver secure, scalable network security platforms.

Secure Realtor.com’s AI platforms across AWS and GCP by designing agent guardrails, identity controls, containment, supply-chain protections, detection, and incident response. Lead threat modeling, secure CI/CD, AI red teaming, and secure-by-default platform frameworks. Partner with enterprise cybersecurity, build security automation using AI agents, educate teams, evaluate emerging threats and vendors, and advise leadership on AI governance and risk.

Build and operate secure, resilient distributed systems for secrets and key management across Cloudflare’s global network. Re-architect internal PKI and machine or workload identity systems, participate in on-call incident response, support internal developers, and advise engineering teams on secure system design. The role requires software development, distributed systems expertise, Linux/UNIX administration, and hands-on security implementation experience.

Design and guide security architecture for NVIDIA networking firmware and embedded subsystems. Responsibilities include threat modeling, analyzing firmware and hardware interactions, defining lifecycle security features, translating threats into requirements, partnering with hardware architects, and driving secure firmware development practices such as memory-safe C, static analysis, and fuzzing. The role requires expertise in firmware security, authorization models, cryptography, secure boot, attestation, and embedded systems.

Lead the architecture and implementation of hardware Root of Trust solutions for NVIDIA SoCs and GPUs. Collaborate across hardware, software, research, marketing, customers, and partners to define security roadmaps, review architecture and verification specifications, address threats, and ensure platform security requirements. Responsibilities include secure boot, cryptography, CPU security, physical attack mitigations, remote attestation, DRM, threat modeling, penetration testing, and certification compliance.

Lead penetration testing, adversary emulation, assume-breach, and AI red-teaming engagements. Identify exploitable weaknesses, validate security controls and detection capabilities, and provide prioritized remediation guidance. Conduct testing across networks, applications, APIs, cloud, and infrastructure while mapping activity to threat frameworks. Communicate findings to technical and executive audiences, advise clients, develop methodologies and tooling, automate testing, and mentor junior team members.

Secure Runpod’s multitenant GPU cloud infrastructure across bare-metal and virtualized environments. Responsibilities include designing workload and network isolation, hardening Linux kernels and container platforms, testing hypervisor and hardware security, developing low-level controls in C, Go, or Rust, securing GPU and PCIe interactions, and responding to infrastructure security incidents with forensic capabilities for ephemeral containers.

Architects and develops hardware and platform security for AI accelerators and cloud infrastructure. Responsibilities include threat modeling, secure silicon design, security infrastructure architecture, AI-assisted security analysis, and debugging issues across subsystems throughout product development, manufacturing, supply chain, and deployment. The role requires collaboration across security, platform, architecture, and infrastructure teams.

Develop and maintain secure software and system environments using Python, Bash, Ansible, RHEL 8, SELinux, IdM/FreeIPA, and PKI. Automate system builds, configure and harden Linux systems, support virtualization and networking, optimize legacy applications, and manage documentation. Interact with customers to prioritize defects and enhancements, and periodically travel onsite for system integration, updates, and deployments. The role requires a Secret clearance and eligibility for TS/SCI.

Provides pre-sales technical support and technical account management for Vectra’s cybersecurity platform. Leads customer discovery, product demonstrations, proofs of concept, technology reviews, integrations, and security architecture discussions. Builds technical relationships with customers and channel partners, supports sales teams, collaborates on deployments and product projects, and maintains expertise in security technologies, networking, cloud security, attacker progression, incident response, and competitive offerings. Regional travel is required as needed.

Designs and advances security architecture for Microsoft’s enterprise productivity environment. The role assesses evolving risk, analyzes systems and telemetry, develops reusable security patterns and tooling, partners with engineering teams on deployment, communicates risk and tradeoffs, and establishes priorities and roadmaps amid incomplete information.

Lead security reviews, code audits, penetration testing, vulnerability research, and mitigation efforts for Microsoft Windows services. Develop reusable security tools and agents, identify attack vectors and architectural risks, demonstrate exploit impact, and collaborate with product engineering teams to design scalable defenses and improve security investments.

Builds secure AI and agentic cybersecurity tooling, transforming research prototypes into production-ready services. Responsibilities include developing backend services, APIs, CLI tools, automation, and integration patterns; defining MVPs for ambiguous security and identity challenges; collaborating across research, product, enterprise security, and platform teams; and applying offensive security and adversarial thinking to address AI-specific risks such as injection, tool misuse, unauthorized access, data exfiltration, and unsafe delegation.

Investigate, assess, and remediate vulnerabilities across NVIDIA data center platforms. Responsibilities include vulnerability triage, exploitability analysis, CVSS and CWE assessment, security fixes, regression testing, dependency updates, automation, and coordinated disclosure. The role also improves secure development lifecycle practices through threat modeling, security reviews, testing, and security automation while collaborating across distributed engineering teams.

Lead architecture and hands-on development of Microsoft's AI Safety Platform, building observability, detection, investigation, threat-hunting, and distributed data-processing capabilities. Design attack detection infrastructure, correlate high-volume telemetry, apply AI security research, conduct security and privacy reviews, and partner across engineering, science, and incident response teams. Mentor engineers and provide technical leadership for complex AI security systems.

Leads security architecture across cloud, on-premises, data, APIs, and AI/ML environments. Designs security patterns, standards, and zero-trust architectures; strengthens identity, encryption, threat detection, vulnerability management, SIEM, and incident response capabilities. Partners with development, operations, business, and enterprise architecture teams to align security with business objectives. Secures machine learning models and pipelines against adversarial attacks while supporting regulatory compliance and risk management.

Develops secure, isolated attack scenarios across cloud, on-premises, and hybrid environments. Reproduces vulnerabilities, builds multi-step attack chains, creates automated graders and reward signals, and validates outcomes using system state and telemetry. The role also develops attack variants and benign comparisons to evaluate AI security agents, partnering with threat researchers, AI engineers, and environment engineers.

Designs and maintains security controls for blockchain, digital asset, application, cloud, and infrastructure environments. Responsibilities include threat modeling, cryptographic key management, application and API security, AWS and Kubernetes hardening, vulnerability management, monitoring, incident response, penetration testing, and security governance. The engineer collaborates with Cybersecurity, Engineering, DevOps, and Infrastructure teams to secure distributed systems and support regulatory requirements.

The Information Systems Security Engineer will secure a USPS information system modernization project by implementing federal security controls, conducting vulnerability assessments and penetration testing, integrating security into CI/CD pipelines, maintaining SSP, RMP, and POA&M documentation, monitoring cloud security tools, supporting incident response, and delivering security training. The role requires collaboration with development, operations, and federal security stakeholders while ensuring compliance with FISMA, NIST RMF, and FedRAMP standards.

Provides technical pre-sales leadership for data security solutions, including demos, proofs of concept, architecture workshops, and secure cloud or hybrid deployments. Advises customers on data security posture, Microsoft Purview, AI application security, and scalable architectures. Builds developer and platform-lead relationships, resolves technical blockers, develops technical win strategies, and collaborates with product engineering. Represents Microsoft in customer and developer communities.