Top Security Engineer Jobs in San Francisco Bay Area, CA

Leads the architecture, modernization, resilience, security, and performance optimization of enterprise mainframe environments. Responsibilities include z/OS performance tuning, WLM and RACF administration, business continuity planning, automation, technical governance, incident resolution, stakeholder collaboration, and guidance of cross-functional engineering and operations teams. The role also evaluates cloud, DevOps, AI, and hybrid IT technologies for mainframe transformation.

As a Solutions Architect, engage with customers to architect cloud solutions, optimize workloads, and provide technical leadership while collaborating with engineering teams.

Design, implement, and support enterprise physical security systems (video surveillance, access control, sensors, IoT). Consult with clients, develop technical architectures, configure and test systems, troubleshoot hardware/software, manage projects, run design workshops, and support sales and delivery. Travel 25-50% and perform hands-on installations and network-integrated solutions.

Design and build backend services for a digital asset custody platform, including secure transaction orchestration, wallet lifecycle management, integrations with custody providers and blockchain infrastructure, resilient APIs, high-availability systems, observability, and close collaboration with security and product teams.

Designs and maintains secure Linux OS components for hardened container images and cloud-native workloads. Responsibilities include remediating CVEs, patching and rebuilding packages across Linux distributions, hardening container images, managing SBOMs and software provenance, and automating reproducible OS build and CI/CD pipelines. The role requires deep Linux systems, package management, dependency, container runtime, and supply chain security expertise, along with cross-functional collaboration to deliver stable, secure OS baselines.

As a Cloud Security Engineer, you'll secure cloud infrastructure, manage AWS and Kubernetes security solutions, conduct assessments, and mentor engineers.

Design and implement security controls for identity, access management, and endpoint security. Lead initiatives around zero trust and phishing-resistant MFA.

Lead and implement security engineering controls across the platform: identify real risks, build secure-by-default libraries and guardrails, enforce least-privilege for services protecting patient data, harden developer machines, and partner with compliance to convert requirements into effective technical controls.

Build and own a multi-tenant platform connecting enterprise customers and sovereign deployments to inference infrastructure. Responsibilities include authentication, tenant isolation, quotas, rate limiting, usage metering, entitlements, public inference APIs, SSO, access controls, audit logs, data residency, and security testing. The role requires strong Python and backend or platform engineering expertise, API design experience, and familiarity with billing, credits, reconciliation, regulated environments, and enterprise identity systems.

Develop and enhance ASP.NET/C# browser-based middle-tier and front-end applications, perform unit security scanning and remediate PEN test/SSDLC findings, create installation/maintenance documentation, and collaborate with stakeholders, QA, and architects to design and implement secure multi-tier solutions.

Build and ship security-first systems across backend services, APIs, and infrastructure. Own identity, access control, auditability, and data lifecycle primitives. Secure agentic AI by enforcing runtime policies, sandboxing agents, and preventing data leakage. Automate security workflows and developer tooling (CI/CD checks, schema validation, runtime monitoring).

Apply to join Galaxy Ventures' invite-only Talent Network for DevOps, SRE, QA, and Security professionals. Upon acceptance, your profile may be discreetly shared with portfolio companies for relevant roles, and you'll receive invitations to exclusive networking events. Participation is confidential and non-binding.

Design and deliver integrated access control, video surveillance, and visitor management systems for commercial and data center projects. Create layouts, schematics, and documentation using CAD/Revit, manage multiple projects, collaborate with clients and vendors, support business development, and stay current with industry technologies.