Endpoint and Data Security Engineer

Altera•San Jose, CA

13d•$133,200 - $192,825•Onsite

About The Position

Altera is seeking an experienced Endpoint and Data Security Engineer to manage and optimize Microsoft Defender, Microsoft Purview DLP, and Securiti.ai platforms. This role will strengthen endpoint protection, threat detection, data loss prevention, and sensitive data security across enterprise environments while supporting incident response, compliance, and continuous security improvement.

Requirements

Bachelor's degree in Cybersecurity, Information Technology, Computer Science, or a related field.
5+ years of experience in endpoint security, data protection, security engineering, or a related cybersecurity discipline.
Hands-on experience administering Microsoft Defender, Microsoft Purview DLP, and/or data security posture management platforms.
Experience with endpoint detection and response, security incident investigation, data protection policies, and vulnerability remediation.
Familiarity with security governance, compliance requirements, and Zero Trust principles.

Responsibilities

Administer, configure, and optimize the Microsoft Defender Security suite, including Microsoft Defender for Endpoint, Microsoft Defender for Office 365, Microsoft Defender for Identity, Microsoft Defender for Cloud Apps, Microsoft Defender Vulnerability Management, Microsoft Defender XDR, and Microsoft Defender for Cloud.
Develop and maintain endpoint protection policies, threat detection capabilities, attack surface reduction controls, and automated response workflows.
Monitor platform health, security coverage, incidents, alerts, and detection effectiveness.
Configure and maintain endpoint protection, endpoint detection and response (EDR), device control, web protection, email security, identity protection, and cloud application security controls.
Improve threat detection fidelity while reducing false positives and operational overhead.
Support threat hunting, incident investigation, and remediation activities.
Lead security onboarding efforts for new business units, applications, and technologies.
Design, implement, and administer Microsoft Purview Data Loss Prevention controls across endpoints, Microsoft 365, Exchange Online, SharePoint Online, OneDrive, Microsoft Teams, and cloud applications.
Develop and maintain DLP policies protecting intellectual property, confidential data, regulated information, and business-critical assets.
Support data classification, sensitivity labeling, encryption, retention, and information protection programs.
Monitor policy violations, investigate incidents, and coordinate remediation activities.
Partner with business stakeholders to align data protection controls with operational requirements.
Develop reporting and analytics related to DLP effectiveness, violations, trends, and risk exposure.
Continuously optimize policy tuning, exception management, and user experience.
Administer and optimize the Securiti.ai platform to identify, classify, monitor, and secure sensitive enterprise data.
Support enterprise-wide data discovery initiatives across structured and unstructured data repositories, cloud storage platforms, collaboration environments, enterprise applications, data lakes, and databases.
Monitor data security posture and identify risks involving sensitive data exposure, data overexposure, excessive permissions, data residency concerns, and regulatory compliance gaps.
Develop remediation plans for identified data security risks.
Partner with data owners, information governance teams, privacy teams, and security stakeholders to improve overall data protection maturity.
Support continuous compliance initiatives related to data governance and security requirements.
Monitor and triage endpoint and data security alerts generated through Microsoft Defender, Microsoft Purview, and Securiti.ai.
Assess security events to determine potential impact to endpoint, data, and information protection controls.
Collaborate with SOC and Incident Response teams by providing platform expertise, investigation support, relevant telemetry, and technical context.
Support incident investigations and remediation activities for events within the Endpoint and Data Security team’s remit.
Assist with containment, recovery, root-cause analysis, and corrective actions as directed by SOC or Incident Response leadership.
Analyze recurring alerts, attack trends, policy violations, and control gaps to recommend improvements across Defender, Purview DLP, and Securiti.ai.
Establish security standards, procedures, and technical controls supporting endpoint and data protection programs.
Support security audits, assessments, customer assurance reviews, and regulatory compliance initiatives.
Maintain documentation, control evidence, security baselines, and operational procedures.
Track remediation plans, exceptions, findings, and risk acceptance decisions.
Contribute to Zero Trust security initiatives and enterprise security transformation efforts.
Develop dashboards and reporting covering Defender security coverage and protection health, endpoint compliance and device risk scores, vulnerability remediation performance, DLP incidents and policy violations, data classification coverage, sensitive data discovery metrics, DSPM posture findings, excessive access and data exposure risks, security incident trends, and control effectiveness and adoption metrics.
Drive continuous improvement initiatives to increase visibility, reduce risk, improve automation, and strengthen overall security posture.