Top Senior Cyber Security Jobs in Dallas, TX

Build and operate MITRE ATT&CK-aligned threat detections across cloud, endpoint, identity, email, and application telemetry. Own the full detection lifecycle, advance detection-as-code platforms, improve data pipelines and observability, integrate threat intelligence, evaluate AI-powered security capabilities, and support investigations and incident response. Partner with Security Operations and engineering teams while independently taking projects from concept through production.

Lead Security Engineer responsible for designing and building secure Python-based services, conducting threat modeling, vulnerability assessments, secure code development/reviews, and integrating AI-assisted security practices across cloud, container, and CI/CD environments while working with stakeholders to ensure auditability and resiliency.

Leads cybersecurity due diligence for acquisitions, divestitures, investments, licensing arrangements, and strategic partnerships. Assesses target environments, identifies material technical and regulatory risks, translates findings into business recommendations, and supports transaction decisions, closing conditions, Day 1 security priorities, and post-close handoffs. Coordinates stakeholders, advisors, evidence reviews, reporting, risk escalation, and continuous improvement of cybersecurity diligence playbooks. Provides technical leadership and mentorship across concurrent, confidential transactions.

Leads acquisitions and divestitures cybersecurity operations across integrations, separations, partnerships, and other transactions. Oversees portfolio execution, resourcing, deal security enablement, executive reporting, post-close workstreams, risk and dependency management, process standardization, playbook maturity, and continuous improvement. Partners with cybersecurity, technology, legal, privacy, finance, corporate development, and integration teams while guiding employees, contractors, and cross-functional contributors in a global matrixed environment.

Lead enterprise security architecture initiatives, including Zero Trust Architecture across identity, devices, networks, applications, and data. Develop security patterns and reference architectures, conduct threat modeling and architecture reviews, integrate security technologies, and guide complex investigations. Collaborate with architecture, infrastructure, and development teams; research emerging threats; use AI-augmented security assessments; and mentor security engineers and architects. Drive measurable process improvement, automation, tooling ownership, and technical excellence.

Assess and secure emerging AI technologies through architecture reviews, code reviews, penetration testing, threat modeling, and remediation guidance. Partner with engineering and business teams to establish secure development standards, research AI vulnerabilities, and build tools supporting secure AI use at scale. The role focuses on LLMs, agentic systems, RAG architectures, prompt injection, data exfiltration, privilege escalation, and model supply chain risks.

Lead penetration testing, adversary emulation, assume-breach, threat emulation, and AI red-team engagements across network, application, API, cloud, and internal infrastructure environments. Identify exploitable weaknesses, evaluate detection and response capabilities, map activity to adversary frameworks, and provide prioritized remediation guidance. The role includes client advisory, executive communication, report writing, methodology and tooling development, automation, and mentoring junior team members.

Leads production security engineering for AI-enabled products and platforms. Responsibilities include threat modeling, secure design and code reviews, security automation, developer tooling, authentication and authorization reviews, AI security assessments, monitoring, documentation, and remediation guidance. The role partners with engineering, product, platform, risk, and cybersecurity teams while applying AI-assisted development practices and maintaining accountability for secure, reliable, production-ready software.

Performs manual and AI-assisted secure code reviews across modern application stacks, validates vulnerabilities, reduces false positives, and provides risk-based remediation guidance. Develops AI-assisted review prompts, workflows, and methodologies; collaborates with developers, penetration testers, threat modelers, and security teams; produces technical reports; and contributes to automation, secure SDLC, and DevSecOps initiatives.

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.

Leads information security audit engagements from planning through reporting, evaluating risks, controls, audit evidence, and management action plans. Reviews audit work for quality and compliance with internal policies and IIA Standards, monitors schedules, coaches audit staff, and collaborates across lines of defense. The role requires strong cybersecurity knowledge across areas such as cloud architecture, APIs, DevSecOps, encryption, Zero Trust, and vulnerability management, along with experience applying technology frameworks and conducting risk-focused audits.

Designs and manages secure network architectures across on-premises, public cloud, private cloud, and hybrid environments. Develops security policies and standards, evaluates controls across AWS, Azure, and GCP, conducts threat modeling and risk assessments, collaborates with engineering and DevOps teams, monitors evolving threats, and supports incident response and forensic investigations.

Leads cybersecurity governance, capability maturity, risk assessments, and enterprise risk-reduction initiatives. Manages and mentors cybersecurity professionals, advises on security tools and platforms, develops risk and threat classification frameworks, and coordinates continuous improvement programs. The role evaluates controls, capabilities, tooling, threats, and vulnerabilities; communicates remediation recommendations to leadership; supports cybersecurity metrics and dashboards; and drives consistent control design, testing, and reporting across cyber programs.

Administers and improves Proofpoint and Microsoft 365 email security services, including Exchange Online, Defender for Office 365, mail flow, authentication controls, threat investigation, message tracing, threat hunting, and remediation. Uses PowerShell and APIs for automation, coordinates incident response and security changes, maintains documentation, supports disaster recovery and control testing, and provides senior escalation support in a large hybrid cloud environment.

Leads cybersecurity engineering teams developing enterprise security solutions across multiple technology domains. Clarifies security requirements, supports multi-level network security, performs threat modeling and vulnerability assessments, and advises leaders during security risks. Uses and validates enterprise-authorized AI for risk analysis, documentation, security testing, and control validation while ensuring data sensitivity, auditability, and resiliency. Coaches, develops, hires, and recognizes engineering talent.

Own daily SOC operations, incident monitoring, alert triage, threat detection, investigations, and response. Manage Palo Alto firewalls, EDR/XDR platforms, email security gateways, vulnerability management, threat intelligence, and detection engineering. Tune security rules, automate response workflows, maintain runbooks and threat models, and communicate risks to IT leadership.

Owns the engineering lifecycle and operations of enterprise authentication and information security platforms. Maintains Java applications, configures MFA and RADIUS integrations, certifies SafeWord releases, validates security patches, develops Bash and SQL automation, troubleshoots production issues, and supports migration from virtual machines to containerized OpenShift platforms. The role also documents operating procedures and collaborates with operations, security, and engineering teams to maintain secure, resilient authentication services.

Designs and deploys enterprise IAM frameworks, automated security controls, cloud and on-premise security platforms, and vulnerability and compliance automation. Partners with software, cloud, and infrastructure teams to embed security by design, evaluates security technologies, establishes engineering standards, and supports investigations and troubleshooting. Requires cybersecurity experience, cloud expertise, automation skills, and preferred SailPoint ISC and IdentityIQ experience.

Lead the design, implementation, modernization, and operation of enterprise identity and access management solutions across Okta, Microsoft Entra ID, AWS, and related platforms. Architect SSO, MFA, authentication, authorization, lifecycle management, RBAC, PIM, and access governance capabilities. Develop IAM automation using Python and PowerShell, integrate applications, troubleshoot complex identity issues, support compliance activities, document technical standards, lead IAM projects, evaluate emerging technologies, and mentor engineers.

Lead complex digital forensics and incident response investigations across endpoints, cloud workloads, networks, and enterprise logs. Conduct evidence acquisition, memory and malware analysis, threat hunting, and timeline development. Build DFIR playbooks, automation, and forensic tooling while ensuring chain-of-custody and legal standards. Partner with Security, Legal, HR, Privacy, Compliance, and Engineering teams, produce defensible reports, improve detection and response capabilities, and mentor junior investigators.

Lead end-to-end enterprise identity and access management projects centered on Microsoft Entra ID. Coordinate cross-functional technical teams, manage scope, budgets, schedules, risks, governance, vendors, testing, deployment, and operational transition. Partner with cybersecurity and IAM stakeholders to support Zero Trust principles, regulatory compliance, and identity transformation. Facilitate workshops, executive communications, steering committees, and continuous improvement initiatives.

Manages information security and data privacy compliance programs, including regulatory monitoring, audits, investigations, policy development, risk assessments, incident analysis, training, reporting, and executive governance. Partners with Information Systems, Legal, Compliance, HR, business leaders, and vendors to implement controls, maintain security and privacy standards, assess SAP access controls, and improve program maturity.

Leads the design and implementation of enterprise cloud security controls across AWS environments. Builds policy-as-code, infrastructure-as-code, CI/CD guardrails, posture checks, drift detection, and automated remediation. Establishes technical standards, mentors engineers, influences cross-team architecture, operationalizes CSPM findings, supports audit and governance activities, and participates in on-call rotations.

Designs and implements security measures across IaaS, PaaS, and SaaS environments. Conducts risk assessments, vulnerability testing, audits, forensic investigations, and incident response. Collaborates with cloud service providers, develops security architectures and frameworks, monitors for breaches, manages cloud resources, and supports compliance. The role also involves client relationship management, solving complex cybersecurity challenges, and advancing cloud security strategies.

Designs, deploys, and maintains network security controls across enterprise, cloud, and hybrid environments. Responsibilities include firewall engineering, segmentation, secure connectivity, monitoring, incident response, vulnerability remediation, compliance support, automation, and security architecture reviews. The role partners with infrastructure, cloud, DevOps, and application teams and participates in a 24x7 on-call rotation.