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.
The ideal candidate brings a strong builder mentality, deep technical background in
production security, and a track record of scaling security practices through automation,
mentorship, and operational excellence.
Core Leadership Philosophy

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

Key Responsibilities
Production & Data Center Security Ownership
 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
Security Control Engineering & Operationalization
 Own lifecycle of security controls including:
o Detection controls
o Preventative controls
o Compensating controls
o 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.

Incident Response & Production Event Leadership
 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
Cloud & Hybrid Infrastructure Security
 Lead security practices across public cloud and hybrid infrastructure environments
 Partner with platform teams to secure:
o Identity and access models
o Network segmentation and service mesh security
o Container and orchestration environments
o Infrastructure-as-Code security controls
 Drive continuous cloud security posture improvement
Automation, Scripting & Tooling
 Lead development of automation and orchestration to:
o Reduce alert triage time
o Automate containment and enrichment
o Improve control deployment consistency
 Contribute directly to scripting and automation initiatives where appropriate
 Champion infrastructure-as-code and security-as-code practices
Mentorship & Technical Leadership
 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.

Required Qualifications:

 10+ years in cybersecurity, infrastructure security, or production security
engineering.
 5+ years leading technical teams in production or security operations environments.
 Strong hands-on experience operating in:
o Data center infrastructure environments
o Cloud platforms (OCI, AWS, Azure, Google Cloud Platform)
o 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.
 Strong understanding of:
o Network and application-layer security
o Identity and access security models
o Detection and response workflows
o Production reliability and change management principles

Preferred Qualifications
 Experience in networking, application delivery, or infrastructure security product
companies.

Location: San Jose, California

 Experience supporting security for customer-facing service platforms.
 Experience working directly with production operations or SRE organizations.
 Experience implementing large-scale automation or SOAR-driven response models.
 CISSP, GIAC, or equivalent certifications.
Leadership Competencies
 Technical-first leadership style.
 Strong builder and systems-thinking mindset.
 Ability to balance security enforcement with production uptime requirements.
 Strong communication during high-pressure operational events.
 Ability to scale teams through automation, tooling, and technical mentorship.
What Success Looks Like (First 12-24 Months)
 Security controls deeply embedded in production infrastructure lifecycle.
 Measurable reduction in manual response through automation.
 Strong security and production operational alignment.
 Increased control visibility across data center and cloud environments.
 Strong bench of engineers capable of operating security controls in production
environments.