Top Cyber Security Jobs in San Francisco Bay Area, CA

Lead the company’s security engineering function as its first dedicated security hire. Define security architecture across the LLM pipeline, cloud infrastructure, and product; improve tenant isolation and data residency; conduct threat modeling, penetration testing, vulnerability remediation, and security operations; and support audits and enterprise security reviews. The role reports to the CTO and may eventually grow into team leadership.

Lead end-to-end red team and adversary emulation operations across cloud, identity, network, endpoint, hardware, and operational security environments. Develop offensive tooling, implants, and AI-driven autonomous agents for reconnaissance, exploitation, and post-exploitation. Serve as a technical lead for customer engagements, brief security executives, collaborate with blue teams and threat intelligence organizations, establish operational standards, and mentor senior operators.

Lead CSfC cybersecurity implementation engineers supporting USN classified networks. Oversee secure solution design, deployment, configuration, integration, testing, compliance with NSA standards, audits, risk assessments, documentation, troubleshooting, vendor evaluation, executive briefings, and team development. Apply expertise in RHEL platform security, virtualization, PKI, DoD hardening, networking, encryption, firewalls, and IPsec VPNs while coordinating with government, industry, and cross-functional stakeholders.

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.

Designs, implements, maintains, and supports security infrastructure, including firewalls, networks, cloud workloads, authentication, monitoring, threat hunting, vulnerability assessments, incident response, and security controls. The role maintains federal compliance, supports system hardening and access control, automates administration, contributes to cloud migration, documents technical processes, and participates in project and on-call support activities.

Own the technical win for cybersecurity sales by leading discovery, security architecture, demonstrations, proof-of-concept engagements, workshops, and pilots. Design ransomware-recovery, immutable vaulting, identity-resilience, and DSPM solutions; communicate architectures and business cases to technical and executive audiences; support partner co-selling, account planning, roadmap feedback, and technical deal qualification.

Defines and executes enterprise security strategy, roadmaps, governance, and high-priority initiatives. Leads security architecture reviews, threat modeling, risk assessments, and systemic remediation across products, platforms, and business operations. Influences cross-functional teams without direct authority, establishes secure practices and measurable outcomes, evaluates business and operational tradeoffs, and develops automation, analytics, and AI-assisted capabilities to improve security reviews and risk reduction.

Build backend services and distributed systems for a cybersecurity and software supply chain security platform. Develop scalable APIs, data pipelines, and platform components handling vulnerability, container, package, runtime, and SBOM data. Work across Linux, Kubernetes, containers, and cloud environments while solving concurrency, performance, reliability, and distributed processing challenges. Own projects from design through deployment, participate in architecture discussions, review code, and collaborate with security researchers and product teams.

Build identity verification and fraud detection systems that analyze candidate data, correlate risk signals, and identify fraudulent or state-sponsored activity. Develop high-availability data pipelines and real-time guardrails for security teams. Prototype and scale fraud detection solutions, collaborate with security, platform, and data teams, write technical designs, debug production systems, and participate in software development lifecycle practices.

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.

Secure federal health IT supply-chain and logistics software by designing and validating application and infrastructure controls, assessing vulnerabilities, driving remediation, embedding security checks into CI/CD pipelines, monitoring security tools, supporting incident response, and translating federal security requirements into implementable technical designs.

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.

Own Petual’s security strategy, architecture, roadmap, and daily security program. Partner with engineering on application, cloud, infrastructure, and AI security; advance vulnerability management, incident response, access governance, and detection; lead enterprise security reviews; and evolve compliance programs for regulated industries and new frameworks.

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 enterprise security architecture for commercial banking and payments, developing secure, scalable strategies across cloud, infrastructure, applications, data, and security platforms. Establishes architecture standards and reference patterns, embeds security into software development and CI/CD, advises on regulatory and risk requirements, and guides cloud modernization, identity, API, container, and data security initiatives. Partners with architects, engineering, DevOps, SRE, security, business, and executive stakeholders to influence technology decisions in a highly matrixed organization.

Designs and operates controlled cyber-capability evaluations for frontier AI models and agentic systems. Builds vulnerable applications, cyber ranges, exploit-development targets, and evaluation harnesses; runs experiments; collects telemetry; analyzes model behavior and evaluation artifacts; and documents security findings. The role also develops sandboxing, containment, access, and secrets-management controls while collaborating with red-team operators, researchers, engineers, and Responsible AI stakeholders.

Define and improve the security and privacy program; secure cloud infrastructure, applications, internal systems, and AI agent workflows; manage identity, access, secrets, and privileged controls; lead SOC 2 Type II compliance and customer security reviews; oversee penetration testing and remediation; and protect sensitive data across API, voice, and SMS systems.

Secure LLMs, generative AI systems, ML infrastructure, training pipelines, and AI applications. Responsibilities include threat modeling, architecture reviews, security controls, hardening, vulnerability remediation, data privacy, incident response runbooks, vendor reviews, governance, policy development, and AI security training. The role also supports proof-of-concept security solutions and monitors emerging AI threats.

Designs, builds, operates, and integrates workforce identity and access management solutions for employees, contractors, and partners. Responsibilities include federated authentication, provisioning and deprovisioning, identity governance, compliance, access management, vendor integrations, acquisition-related migrations, solution rollout, and cloud-based service operation. The role requires hands-on IAM expertise, strong communication, programming familiarity, CI/CD experience, and AWS experience.

Serves as the senior technical authority for enterprise browser data protection and security. Owns architecture, roadmap, standards, lifecycle, browser-based DLP controls, integrations, automation, and operational support. Leads complex troubleshooting, major incident response, root-cause analysis, runbook development, and continuous improvement. Partners across cybersecurity, identity, endpoint, network, cloud, risk, compliance, and vendor teams while mentoring engineers and influencing enterprise security design.

Leads KeyBank’s Red Team and offensive security program, including adversary emulation, penetration testing, physical and application assessments, cloud security testing, AI security evaluations, and purple team exercises. Develops testing strategy, methodologies, tooling, metrics, and maturity roadmaps; mentors engineers; coordinates internal and third-party engagements; validates remediation and attack paths; and presents findings and strategic recommendations to executives and cybersecurity stakeholders.

Designs, implements, configures, and supports enterprise cybersecurity solutions across IAM, endpoint, network, email, application, cloud, and security awareness domains. Conducts vulnerability assessments, threat hunting, incident investigation, security tool tuning, policy development, and security architecture reviews. Serves as a security subject matter expert on technology projects, collaborates with an MSSP, provides incident escalation support, and maintains availability for critical security operations.

Own and evolve security infrastructure for AI foundation-model platforms across compute, storage, networking, and data systems. Architect secure Kubernetes and cloud patterns, manage identity and secrets, secure data pipelines, create threat models, and automate policy enforcement and security checks. Partner with research and engineering teams to deliver scalable systems with strong security, reliability, and performance.

Lead technical presales engagements for Microsoft security solutions, including Entra, Purview, Defender, and Sentinel. Deliver discovery sessions, demonstrations, whiteboarding, solution designs, and proof-of-concept efforts. Build competitive strategies, resolve technical blockers, guide customer decisions, collaborate with partners and deployment teams, and help existing customers optimize security product usage. Embed governance, security, and compliance into customer engagements while quantifying business value and supporting sales targets.

Leads an engineering team responsible for designing, building, and operating data security products and controls. Provides technical direction, hands-on engineering leadership, and delivery ownership across DLP policy, data discovery and classification, data access controls, policy-as-code workflows, automation, integrations, testing, deployment, reliability, and operational support. Translates data security requirements into scalable solutions while mentoring engineers and driving adoption of secure engineering practices.