Top Senior Cyber Security Jobs in San Antonio, TX

Build and scale backend security platform services, including authentication, authorization, identity infrastructure, permission systems, and data models. Lead cross-team technical initiatives, standardize security solutions, collaborate with compliance and mission stakeholders, and influence architecture and engineering standards. The role requires strong system design, backend development, security expertise, technical leadership, and the ability to operate in sensitive environments.

Leads secure enterprise architecture design and GitLab Professional Services implementations across application security, cloud security, DevSecOps, identity, vulnerability management, and compliance. Guides SaaS, Self-Managed, and Dedicated deployment decisions; leads CI/CD, source control, and security-tool migrations; conducts risk assessments and threat modeling; supports pre-sales scoping and statements of work; coordinates cross-functional delivery; mentors consultants; and develops security enablement materials.

Lead complex security investigations across endpoint, identity, cloud, email, SaaS, and network environments. Own incidents through containment, remediation coordination, documentation, and post-incident review. Tune detections, queries, dashboards, workflows, and SOAR playbooks; improve SOC metrics, threat coverage, alert fidelity, and response processes. Partner on vulnerability and cloud-risk remediation, participate in global on-call rotation, use approved AI capabilities responsibly, and mentor analysts.

Leads the company’s information security operations and reports to the CISO. Oversees SIEM, threat detection, vulnerability management, penetration testing, incident response, SOC 2 Type II compliance, third-party risk, security awareness, cloud and endpoint security, and regulatory cybersecurity coordination. Manages security policies, breach readiness, tabletop exercises, KPIs, audits, and emerging technology evaluations while partnering with IT, infrastructure, compliance, regulators, and executive leadership.

Leads enterprise vulnerability management and cloud security posture management across on-premises, cloud, and application environments. Administers security platforms, monitors AWS environments for vulnerabilities and misconfigurations, prioritizes remediation, automates workflows, and partners with engineering and DevOps teams. Tracks risk metrics and aligns security practices with FedRAMP, NIST CSF, ISO 27001, and CIS Controls.

Own day-to-day IT and information security operations for a fully remote Mac fleet. Responsibilities include endpoint lifecycle management, identity and access administration, Google Workspace, helpdesk support, asset coordination, CrowdStrike EDR monitoring, DLP controls, Datadog SIEM alerting, security hygiene, access reviews, and SOC 2 and PCI evidence collection. The role requires autonomous ownership, automation, clear documentation, cross-functional collaboration, and approximately 4–6 years of experience beyond ticket-only support.

Conduct advanced application security research across GitLab’s DevSecOps and AI-powered platforms. Identify and exploit novel, systemic, and chained vulnerabilities; develop proof-of-concept exploits, testing methodologies, and research automation; assess AI attack vectors and open-source dependencies; drive remediation and security improvements; advise engineering teams, contribute to roadmaps, mentor researchers, and share findings with the security community.

Lead public sector security compliance initiatives, including FedRAMP continuous monitoring, audits, certifications, GRC strategy, compliance automation, documentation, customer support, and regulatory analysis. Collaborate with IT, Product, Engineering, Security, Legal, auditors, and government customers to strengthen compliance across GitLab’s SaaS and self-managed offerings.

Designs, documents, tests, and maintains IT general and security controls across corporate, engineering, SaaS, and cloud-native systems. The role maps controls across SOX, SOC 2, ISO, NIST, PCI-DSS, privacy, and contractual requirements; manages audits, access reviews, change-management testing, remediation, policy work, and evidence automation. It also establishes governance standards for enterprise AI use and partners with IT, Security, Engineering, Finance, Legal, Privacy, and auditors.

Monitor emerging vulnerabilities, assess exploitability and business risk, prioritize remediation, and develop vulnerability intelligence frameworks. Implement asset detection and monitoring across cloud and data-center environments, maintain vulnerability management KPIs, communicate security posture to technical and executive stakeholders, use CrowdStrike Falcon capabilities, and build security tooling. The role requires scripting, threat intelligence research, cloud and Linux experience, cross-functional collaboration, and AI-enabled workflow improvements.

Own and evolve GitLab’s authorization systems across its Ruby on Rails monolith and next-generation Rust policy engine. Design fine-grained permissions for users, tokens, roles, and AI agents; secure GraphQL and REST APIs; lead feature-flagged rollouts and migrations; improve performance and reliability; and collaborate across authentication, platform, AI, and modular-service teams in a distributed asynchronous environment.

Conduct manual penetration tests and secure code reviews across web applications, APIs, AWS infrastructure, and AI systems. Develop AI-assisted security tooling, test LLM applications and agents, triage SAST findings, tune detection rules, support security reviews before production, and communicate risks and remediation priorities to engineering teams.

Build and scale application security for a SaaS platform by integrating SAST, SCA, DAST, secrets scanning, and container/IaC checks into CI/CD. Partner with engineering and DevOps teams on threat modeling, secure code reviews, vulnerability remediation, incident response, and secure development practices. The role also supports compliance goals and translates security risks clearly to engineers.

Leads cybersecurity consulting across the customer lifecycle, supporting presales demonstrations, proof-of-concepts, executive reviews, cyber skills programs, crisis simulations, and platform adoption. Advises strategic customers on cyber resilience, risk measurement, security initiatives, and program roadmaps. Partners with sales, product, content, and engineering teams while serving as a trusted embedded advisor and escalation point.

Own and improve Onebrief’s corporate security stack across endpoints, identity, SaaS, browsers, Zero Trust, EDR, SIEM, and MDM. Establish secure configuration baselines, detect and remediate drift, integrate telemetry, and build API-driven or infrastructure-as-code automation. Translate CMMC 2.0 and NIST-aligned requirements into continuously validated technical controls and reliable audit evidence. Partner with Corporate IT, Security Operations, GRC, and application owners to strengthen security posture and reduce manual compliance work.

Analyze in-the-wild exploits and perform deep reverse engineering to track adversaries. Build detection, automation, and classification frameworks; develop host/network signatures and tooling. Produce high-quality intelligence reports and briefings, collaborate across teams, and contribute to mitigation and large-scale hunting efforts.

Lead security engineering across AI systems, cloud infrastructure, product security, GRC automation, GitHub controls, and compliance workflows. Develop AI-specific threat models and guardrails, automate security checks and evidence collection, strengthen AWS and GCP environments, manage CSPM tooling, and secure software supply chains. Partner with Engineering, Product, Legal, IT, and GRC to establish security programs and practical controls for Jasper’s AI platforms.

Manages global 24/7 Security Operations Center operations, including processes, playbooks, shift coverage, quality assurance, analyst development, incident response capabilities, and operational performance. Leads cybersecurity analysts, partners with Product and Support teams, reports on objectives and key results, operationalizes new services, and represents the organization in public speaking engagements.

Lead corporate endpoint security architecture with a focus on macOS, designing secure-by-default controls, automation, patching, software distribution, and security baselines across macOS, iOS, Windows, and Linux. Manage configurations through Terraform, GitOps, version control, CI pipelines, and automated rollouts. Partner with IT and security teams to improve telemetry, detection, response, auditability, and operational efficiency. Mentor engineers and serve as a senior escalation point for complex endpoint security issues in a fully remote environment.

Serve as a senior embedded cybersecurity consultant across the customer lifecycle: secure technical wins in pre-sales, run POVs, advise C-level and technical stakeholders, design cyber skills programs and crisis simulations, drive platform adoption and roadmaps, operationalize Immersive One with metrics and EBRs, and act as the customer liaison to sales, product, and engineering to improve cyber workforce resilience.

As a Security Architect, you will build secure agent runtimes and systems, ensuring robust security capabilities in agentic AI solutions while conducting security evaluations.

Maintains the security posture of information systems supporting DoD Collateral, SCI, and SAP environments. Responsibilities include authorization packages, RMF support, continuous monitoring, configuration change analysis, audit review, vulnerability remediation, incident handling, security documentation, system recovery oversight, and physical and personnel security coordination. Works closely with ISSMs, ISOs, authorizing officials, and government customers.

The Information System Security Officer supports day-to-day security operations for DoD information systems, including Collateral, SCI, and SAP environments. Responsibilities include maintaining authorization packages, monitoring compliance, coordinating system changes, reviewing audit records, supporting incident recovery, identifying vulnerabilities, conducting self-inspections, and assisting with assessment and authorization efforts. The role requires RMF experience, SAP experience, a bachelor's degree or equivalent experience, and TS/SCI clearance.

Maintains information system security for DoD Special Access Programs, including RMF authorization packages, continuous monitoring, configuration management, audit review, vulnerability identification, incident handling, and compliance assessments. Coordinates system changes, recovery processes, security documentation, self-inspections, and countermeasure implementation with ISSM, ISO, and authorizing officials. Supports Collateral, SCI, and SAP environments and assists government and contractor organizations with assessment and authorization activities.

Maintains the operational security posture of classified information systems supporting Collateral, SCI, and SAP environments. Responsibilities include authorization package management, continuous monitoring, configuration and change management, vulnerability identification, audit review, incident handling, security documentation, self-inspections, and coordination with ISSMs, authorizing officials, DoD, national agencies, and contractors. The role requires 5+ years of experience, SAP experience, TS/SCI clearance, and the ability to obtain a CI polygraph.