Senior Manager; Cybersecurity

Senior Manager, Cybersecurity

Location:

San Jose, California

We are seeking a Senior Manager, Production Operations & Data Center Security to lead security strategy and operational execution across production infrastructure, cloud environments, and data center platforms. Reporting to A10’s CISO, this is a hands‑on leadership role responsible for building, operating, and continuously improving security controls and practices that protect both internal infrastructure and customer-facing services. This leader will lead cross‑functional teams operating deeply within production environments, partnering closely with Production Operations, SRE, and Infrastructure Engineering to deliver comprehensive and measurable security outcomes.

This Role Is Expected To

• Lead through technical credibility and hands‑on engagement
• Own security controls as operational systems, not theoretical frameworks
• Build and improve — not just manage — security capabilities
• Operate as an incident leader during high‑severity production events
• Mentor engineers and analysts into stronger production security operators

• Oversee a mature customer‑facing SOC team to ensure continuity of great customer service
• Own security posture across production data centers, cloud platforms, and hybrid infrastructure
• Partner with Infrastructure and SRE teams to embed security controls into platform design and deployment pipelines
• Ensure security controls operate reliably under production performance and availability constraints
• Lead security reviews of production architecture, traffic flows, and service dependencies
• Drive hardening standards across compute, network, identity, and application control layers

Own Lifecycle Of Security Controls Including

• Detection controls
• Preventative controls
• Compensating controls
• Response controls

Lead control validation and continuous verification programs.

Drive reduction of manual operational overhead through automation.

Ensure security telemetry is actionable, high fidelity, and aligned to response automation.

• Serve as senior incident commander for production security incidents
• Build response workflows aligned to production change control and reliability engineering practices
• Integrate security response into production incident management processes
• Lead post‑incident analysis focused on control improvement and systemic risk reduction

Partner With Platform Teams To Secure

• Identity and access models
• Network segmentation and service mesh security
• Container and orchestration environments
• Infrastructure-as-Code security controls

Drive continuous cloud security posture improvement.

Lead Development Of Automation And Orchestration To

• Reduce alert triage time
• Automate containment and enrichment
• Improve control deployment consistency

Contribute directly to scripting and automation initiatives where appropriate.

Champion infrastructure‑as‑code and security‑as‑code practices.

• Act as a player‑coach across security and production teams.
• Mentor engineers in secure production design and incident response practices.
• Build growth paths for security engineers operating in production environments.
• Foster culture of ownership, operational accountability, and continuous learning.

• 10+ years in cybersecurity, infrastructure security, or production security engineering.
• 5+ years leading technical teams in production or security operations environments.

• Data center infrastructure environments
• Cloud platforms (OCI, AWS, Azure, Google Cloud Platform)
• Hybrid infrastructure models

Demonstrated experience building or operating production security controls.

Strong scripting or automation experience (Python, Go, Bash, or similar).

Experience leading during high‑severity production incidents.

• Network and application‑layer security
• Identity and access security models
• Detection and response workflows
• Production reliability and…