Sr. Information Security Engineer

Glidewell Dental•Irvine, CA

4d•$145,000 - $173,000

About The Position

The Sr. Information Security Engineer configures, maintains, and optimizes security platforms across endpoint, network, web, email, cloud, and identity domains. The role improves detection coverage, signal quality, telemetry integrity, and platform effectiveness, and analyzes alerts and telemetry to assess risk and determine appropriate actions. It also contributes to incident response, troubleshoots security controls, and makes risk-based adjustments that balance security with operational needs. The engineer collaborates with IT, engineering, business teams, peers, and other departments to resolve issues and embed security into organizational processes. The position supports continuity across security platforms, identifies gaps in detection and control effectiveness, improves response outcomes, contributes to playbooks and automation, and communicates technical findings and business impact to stakeholders. The role participates in an after-hours on-call rotation, responds to incidents and production-impacting issues, mentors team members, supports audits and security documentation, and conducts research on emerging security technologies. The position requires a bachelor's degree in a related field and at least eight years of relevant information security, network security, or infrastructure security experience, or equivalent education and experience. Experience with zScaler or Darktrace is preferred. Experience with NDR, secure web gateway/SSE, and endpoint, cloud, or identity security tools is required. The listed pay range is $145,000 to $173,000 per year.

Requirements

Bachelor's degree in Computer Science, Computer Engineering, Information Technology, or a related field.
At least eight years of experience in information security, network security, or infrastructure security, or equivalent education and experience demonstrating comparable knowledge, skills, and abilities.
Experience with network detection and response (NDR) platforms.
Experience with secure web gateway/SSE platforms.
Experience with endpoint, cloud, or identity security tools.

Nice To Haves

Experience with zScaler or Darktrace.

Responsibilities

Configure, maintain, and optimize assigned security platforms across endpoint, network, web, email, cloud, and identity domains.
Refine security policies, detection logic, and configurations to improve signal quality, reduce false positives, and enhance visibility.
Use platform capabilities to develop and improve detection coverage, including indicators of attack and behavioral detection.
Ensure platform health, telemetry integrity, and effective coverage across environments.
Evaluate and implement enhancements to existing tools before recommending new solutions.
Analyze platform alerts and raw telemetry, investigate suspicious activity using logs, network traffic, and endpoint behavior, and determine appropriate actions based on context and risk.
Distinguish benign, anomalous, and malicious activity using independent judgment.
Perform triage and root cause analysis, escalating when broader coordination is needed.
Contribute to incident response through multi-platform analysis and insight.
Troubleshoot security-control issues, including access disruptions, false positives, and policy conflicts.
Make risk-based control adjustments that balance security with operational needs.
Collaborate with IT, engineering, business teams, and peers to diagnose and resolve issues and maintain continuity of coverage.
Develop working knowledge across security domains and serve as a secondary resource for endpoint, email, vulnerability, and cloud platforms.
Identify gaps in detection, visibility, and control effectiveness; improve detection quality, reduce noise, and enhance response effectiveness, including MTTD and MTTR.
Contribute to playbooks and processes, remaining effective when guidance is incomplete.
Implement automation or scripting where appropriate to improve efficiency.
Communicate findings, risks, recommendations, and technical observations in terms relevant to technical and non-technical stakeholders; listen actively and provide clear recommendations and direction.
Participate in an after-hours on-call rotation and respond promptly and systematically to security incidents and production-impacting issues.
Communicate important security developments, escalations, and activities to appropriate management personnel.
Mentor and train other team members.
Recommend regulatory and industry best-practice frameworks for security operations.
Research emerging security technologies to help ensure security solutions perform effectively.
Collaborate with other departments to embed security throughout organizational processes.
Participate in technical audits for compliance with security policies and industry standards.
Participate in creating and maintaining security documents.
Perform other related duties and projects as business needs require and management directs.